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TELEDYNE Model 9110AH NO

X

 Analyzer Operator Manual, 01620, Rev. F 

 

9-31 

9.3  Subsystem Troubleshooting and Adjustments 

9.3.1  Computer, Display, Keyboard 

The purpose of this section is to determine if the computer subsystem electronics hardware are 
working properly. Assessment will be made at the board level. 

9.3.1.1  Front Panel Display 

The front panel display is a 2 line by 40 character display. It has its own microprocessor to 
decode commands and display characters. It contains a self test feature. To test the display: 

1.  Turn off the power to the instrument. 

2.  Fold down the M9110AH front panel. 

3.  Disconnect the 24 line flat ribbon cable (J2) that connects the computer parallel port to the 

keyboard. 

4.  Turn on the M9110AH power switch. 

5.  Observe the front panel display. If the display successfully completes its power on self test 

it will display a single underline character "_" in the left most character of the top line of the 
display. If this character is present, the display is working properly. 

6.  Power down the analyzer, and re-attach the 24 line cable to J2, and proceed to the next test. 

9.3.1.2  Single Board Computer 

The SBC40 is a full function computer designed for instrument control applications. It consists 
of a 16 bit 8080 microprocessor, 2 serial and one parallel ports, standard bus interface, and 4 
sockets for memory. The memory sockets consist of 256k ROM containing the multitasking 
operating system and application code. 32k EE prom containing the setup variables. 128k RAM 
containing data collected by the instrument, and a time-of-day clock to provide event timing 
services. The overall function of this board is quite complex. Complete testing of this board's 
functions is not possible in the field. If component level troubleshooting of this board is 
necessary contact the factory for schematics. 

Like the display, the overall functioning of the CPU can be confirmed by a simple test. 

1.  Locate the CPU board on the motherboard by referring to Figure 2-5. 

2.  Power the instrument on. 

3.  Locate the red LED at the top left edge of the board. 

4.  It should be flashing at a frequency of about once per second. 

5.  This flashing indicates the board is powered up and is executing instructions. 

Содержание 9110AH

Страница 1: ...ALYZER SERIAL NO _______________ TELEDYNE ANALYTICAL INSTRUMENTS 16830 CHESTNUT STREET CITY OF INDUSTRY CA 91749 1020 TOLL FREE 888 789 8168 FAX 626 961 2538 TEL 626 934 1500 WEB SITE www teledyne ai com 01620 REV F Copyright 1999 TELEDYNE Inc 07 06 99 ...

Страница 2: ......

Страница 3: ...f these symbols is described below GENERAL WARNING CAUTION Refer to the instructions for details on the specific danger CAUTION Hot Surface Warning CAUTION Electrical Shock Hazard Technician Symbol All operations marked with this symbol are to be performed by qualified maintenance personnel only Electrical Ground This symbol inside the instrument marks the central safety grounding point for the in...

Страница 4: ...3 2 4 THE M9110AH NOX ANALYZER 4 1 4 1 PRINCIPLE OF OPERATION 4 1 4 2 OPERATION SUMMARY 4 4 4 2 1 Sensor Module Reaction Cell Detector 4 4 4 2 2 Pneumatic Sensor Board 4 4 4 2 3 Computer Hardware and Software 4 5 4 2 4 V F Board 4 5 4 2 5 Front Panel 4 5 4 2 6 Power Supply Module 4 7 4 2 7 Pump Valves Pneumatic System 4 7 4 2 8 Ozone Generator 4 10 4 2 9 NO2 NO Converter 4 10 5 SOFTWARE FEATURES 5...

Страница 5: ...ING Commands and Messages 5 34 5 7 5 CALIBRATION Commands and Messages 5 35 5 7 6 DIAGNOSTIC Commands and Messages 5 36 5 7 7 DAS Commands and Messages 5 37 5 7 8 VARIABLES Commands and Messages 5 39 6 OPTIONAL HARDWARE AND SOFTWARE 6 1 6 1 RACK MOUNT OPTIONS 6 1 6 2 ZERO SPAN VALVES OPTION 6 2 6 2 1 Autocal Setup Zero Span Valves 6 2 6 3 ISOLATED 4 20 MA CURRENT LOOP OPTION 6 4 6 4 MOLYBDENUM CON...

Страница 6: ...PROCEDURE 8 14 9 TROUBLESHOOTING AND ADJUSTMENTS 9 1 9 1 OPERATION VERIFICATION DIAGNOSTIC TECHNIQUES 9 3 9 1 1 Fault Diagnosis with TEST Variables 9 3 9 1 2 Fault Diagnosis with WARNING Messages 9 8 9 1 3 Fault Diagnosis using DIAGNOSTIC Mode 9 10 9 1 4 M9110AH Internal Variables 9 17 9 1 5 Test Channel Analog Output 9 19 9 1 6 Factory Calibration Procedure 9 20 9 2 PERFORMANCE PROBLEMS 9 24 9 2 ...

Страница 7: ...ncy V F Board 9 37 9 3 4 Status Temp Board 9 43 9 3 5 Power Supply Module 9 45 9 3 6 Ozone Generator 9 49 9 3 7 Flow Pressure Sensor 9 53 9 3 8 NOx Sensor Module 9 58 9 3 9 Z S Valves 9 63 9 3 10 Pneumatic System 9 64 10 M9110AH SPARE PARTS LIST 10 1 APPENDIX A ELECTRICAL SCHEMATICS A 1 ...

Страница 8: ...CONVERTER ASSEMBLY 8 5 FIGURE 8 3 REACTION CELL ASSEMBLY 8 8 FIGURE 8 4 SAMPLE BYPASS FLOW CONTROL ASSEMBLY 8 9 FIGURE 8 5 PNEUMATIC DIAGRAM 8 11 FIGURE 8 6 PNEUMATIC DIAGRAM WITH ZERO SPAN VALVES 8 12 FIGURE 9 1 SPAN CALIBRATION VOLTAGE 9 23 FIGURE 9 2 CPU BOARD JUMPER SETTINGS 9 33 FIGURE 9 3 RS 232 PIN ASSIGNMENTS 9 35 FIGURE 9 4 V F BOARD JUMPER SETTINGS 9 42 FIGURE 9 5 POWER SUPPLY MODULE LAY...

Страница 9: ...RS 232 COMMAND SUMMARY 5 31 TABLE 5 14 RS 232 INTERFACE COMMAND TYPES 5 32 TABLE 5 15 RS 232 TEST MESSAGES 5 33 TABLE 5 16 RS 232 WARNING MESSAGES 5 34 TABLE 5 17 RS 232 CALIBRATION MESSAGES 5 35 TABLE 5 18 RS 232 CALIBRATION COMMANDS 5 36 TABLE 5 19 RS 232 DIAGNOSTIC COMMAND SUMMARY 5 37 TABLE 6 1 ZERO SPAN VALVE OPERATION 6 2 TABLE 6 2 SETUP AUTOMATIC ZERO SPAN CHECKING OR CALIBRATION 6 3 TABLE ...

Страница 10: ...L 9110AH VARIABLES 9 18 TABLE 9 6 TEST CHANNEL READINGS 9 19 TABLE 9 6 TEST CHANNEL READINGS CONTINUED 9 20 TABLE 9 7 MOTHERBOARD JUMPER SETTINGS 9 39 TABLE 9 1 V F BOARD SWITCH SETTINGS 9 39 TABLE 9 8 POWER SUPPLY MODULE SUBASSEMBLIES 9 46 TABLE 9 9 POWER SUPPLY MODULE LED OPERATION 9 49 TABLE 9 10 OZONE GENERATOR CONTROL CONDITIONS 9 50 TABLE 10 1 TELEDYNE M9110AH SPARE PARTS LIST 10 1 TABLE 10 ...

Страница 11: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F x INTENTIONALLY BLANK ...

Страница 12: ...here is the need for periodic maintenance and to quickly troubleshoot problems to assure maximum reliability and data integrity To address these needs we have created three indexes to the information inside They are Table of Contents Outlines the contents of the manual in the order the information is presented This is a good overview of the topics covered in the manual There is also a list of Tabl...

Страница 13: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 1 2 INTENTIONALLY BLANK ...

Страница 14: ...el on the serial number tag on the rear panel Compare that to your local power before plugging in the Instrument 2 2 Electrical and Pneumatic Connections 1 Refer to Figure 2 2 to locate the rear panel electrical and pneumatic connections 2 Attach the pump to the Exhaust Out port on the instrument rear panel The exhaust from the pump should also be vented to atmospheric pressure 3 Attach the sample...

Страница 15: ...d pump Vent pump exhaust to well ventilated area at atmosphere pressure FIRE or EXPLOSION HAZARD WARNING Lethal voltages present inside case Do not operate with cover off during normal operation Before operation check for correct input voltage and frequency Do not operate without proper chassis grounding Do not defeat the ground wire on power plug Turn off analyzer power before disconnecting elect...

Страница 16: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 2 3 Figure 2 1 Removal of Shipping Screws Check for Correct Power ...

Страница 17: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 2 4 Figure 2 2 Rear Panel ...

Страница 18: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 2 5 Figure 2 3 Inlet and Exhaust Venting Recommendations ...

Страница 19: ...et If you would like to know more about the meaning and utility of each TEST function refer to Table 9 1 Also now is a good time to verify that the instrument was shipped with the options you ordered Table 2 1 also contains the list of options Section 6 covers setting up the options 6 Electric Test and Optic Test both generate simulated signals in the M9110AH A Electric Test checks the electronics...

Страница 20: ...h digit until the expected value is set 2 Press ENTR ENTR stores the expected NOx span value The internal formulas are adjusted to compute this number when span gas concentration is input into the instrument 3 Press CAL CONC NO In the same CAL CONC sub menu press the NO button and enter the expected NO span value As before this value will be used in the internal formulas to compute the NO concentr...

Страница 21: ...ctually changes the equations and zeros the instrument 6 Press EXIT input Span gas M9110AH returns to the CAL menu Now switch gas streams to span gas 7 Wait 10 min Wait for reading to stabilize at the span value 8 Press SPAN The SPAN button should be displayed If there is no SPAN button check the Troubleshooting Section 9 2 8 for instructions on how to proceed In certain circumstances at low span ...

Страница 22: ...s not in this range check Section 7 1 or 9 If the SLOPE is in the acceptable range the instrument will perform optimally NOTE The NO and NOx slopes should be equal within 0 3 4 Scroll the TEST function menu until the NOx OFFS is displayed The M9110AH will display the OFFSET parameter for the NOx equation This number should be near zero A value of 0 0 50 indicates calibration in the optimal range I...

Страница 23: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 2 9 Figure 2 4 Front Panel ...

Страница 24: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 2 11 ...

Страница 25: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 2 12 Figure 2 5 Assembly Layout ...

Страница 26: ...9 3 8 AUTOZERO mV 10 to 50 4 1 HVPS V 400 700 constant 9 3 8 5 DCPS mV 2500 200 9 3 5 RCELL TEMP o C 50 2 9 3 8 2 BLOCK TEMP o C 50 2 9 3 4 1 BOX TEMP o C 8 48 9 3 4 1 PMT TEMP o C 7 1 9 3 8 4 CONV TEMP o C 700 10 Std 315 5 Moly 9 3 4 1 RCEL PRES IN Hg A 2 10 constant 9 3 7 SAMP PRES IN Hg A 25 30 constant 9 3 7 Electric Test Optic Test Electric Test PMT Volts mV 2000 200 9 1 3 2 NO Conc ppm 250 2...

Страница 27: ...ciency 0 75 1 10 7 10 5 2 2 6 Noise at Zero ppm 0 0 0 2 Table 9 1 Noise At Span ppm 0 1 0 5 Table 9 1 Measured Flows Sample Flow cc min 50 20 9 3 7 Figure 9 8 Bypass Flow cc min 250 Std 500 Optional Figure 8 4 Ozone Flow cc min 250 15 9 3 7 Figure 9 8 Factory Installed Options Option Installed Power Voltage Frequency Rack Mount w Slides Rack Mount w Ears Only Rack Mount External Pump w o Slides St...

Страница 28: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 2 15 INTENTIONALLY BLANK ...

Страница 29: ...5 of reading Temperature Range 5 40 o C Humidity 0 95 RH non condensing Temp Coefficient 0 1 per o C Voltage Coefficient 0 1 per V Dimensions HxWxD 7 x17 x23 6 18 cm x 43 cm x 61 cm Weight Analyzer 43 lbs 20 kg Weight Pump Pack 16 lbs 7 kg Power Analyzer 100 V 50 60 Hz 120 V 60 Hz 220 V 50 Hz 240 V 50 Hz 200 watts Power Analyzer4 230 V 50 Hz 2 5A Power Ext Pump 110 V 60 Hz 220 V 50 Hz 240 V 50 Hz ...

Страница 30: ... one year from the date of delivery All replacement parts and repairs are warranted for 90 days after the purchase If a Product fails to conform to its specifications within the warranty period TELEDYNE shall correct such defect by in TELEDYNE s discretion repairing or replacing such defective Product or refunding the purchase price of such Product The warranties set forth in this section shall be...

Страница 31: ...1620 Rev F 3 3 TERMS AND CONDITIONS All units or components returned to TELEDYNE should be properly packed for handling and returned freight prepaid to the nearest designated Service Center After the repair the equipment will be returned freight prepaid ...

Страница 32: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 3 4 INTENTIONALLY BLANK ...

Страница 33: ... in the signal from the M9110AH comes from the light emitted from the chemiluminescent gas phase reaction of nitric oxide NO and ozone O3 as follows 2 2 3 O NO O NO hv NO NO 2 2 The reaction of NO with ozone results in electronically excited NO2 molecules as shown in the first equation above The excited NO2 molecules release their excess energy by emitting a photon and dropping to a lower energy l...

Страница 34: ...h the converter the signal measured is the NOx concentration which is also stored in the computer The NO2 component is calculated by subtracting NOx NO NO2 using the built in computer The three results NO NOx and NO2 are then further processed and stored by the computer yielding several instantaneous and long term averages for all three components Periodically the AutoZero valve switches allowing ...

Страница 35: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 4 3 Figure 4 1 Block Diagram ...

Страница 36: ... reaction cell The reaction cell is maintained at about one quarter of atmospheric pressure The second pressure sensor measures the pressure upstream of the reaction cell which is near ambient pressure From these two pressures the sample flow rate can be computed and is displayed as sample flow in the TEST menu Finally a solid state flow meter measures the ozone flow directly Likewise it is displa...

Страница 37: ...p variables such as range and instrument ID number The EEPROM data is non volatile so the instrument can lose power and the current set up information is preserved 4 2 4 V F Board The computer CPU board communicates via 2 major hardware assemblies These are the V F board and the front panel display keyboard The V F board communicates with the CPU via the STD 100 bus The V F board includes of A D i...

Страница 38: ... display there are 3 status LED s They can be in three states OFF ON and Blinking The meanings of the LED s are given in Table 4 2 Table 4 2 Front Panel Status LED s LED State Meaning Green Off On Monitoring Blinking NOT monitoring DAS disabled Monitoring normally taking DAS data Monitoring DAS in HOLDOFF mode 1 Yellow Off On Blinking AutoCal disabled AutoCal enabled Calibrating Red Off Blinking N...

Страница 39: ...y around then through the converter to measure NO NOx and by calculation NO2 The AutoZero valve provides a continuous zero reference Periodically the valve switches to turn off sample gas to the reaction cell The ozone continues to flow The zero reading is averaged and used to compensate subsequent readings for PMT zero offset An external pump comes as standard equipment The Pump Pack includes a v...

Страница 40: ...e is given as an absolute pressure 5 Hg A reference against zero absolute pressure a perfect vacuum thus removing ambiguities for high altitude sites A 47 mm diameter sample filter is provided as standard equipment to remove particulate matter from the sample gas It is important that the filter be maintained at regular intervals because particulates trapped on the filter have been shown to alter t...

Страница 41: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 4 9 Figure 4 2 External Pump Pack ...

Страница 42: ...stream therefore the ozone GENERATOR MAY NOT TURN ON IMMEDIATELY AFTER POWER UP The delay is built into the instrument to allow the dryer to start operating and purge the system with dry air Table 4 3 details the conditions for turning on the ozone generator Table 4 3 Ozone Generator Start up Timing Time Since Last Power up Ozone Gen State Program Action 1 hour ON at power up Gen ON immediately af...

Страница 43: ...lems indicate a need for diagnostics the SETUP menu is used The SETUP menu is diagrammed in Figure 5 2 5 1 Index to Front Panel Menus The next several pages contain two different styles of indexes that will allow you to navigate the M9110AH software menus The first two pages show a tree menu structure to let you see at a glance where each software feature is located in the menu The second menu con...

Страница 44: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 5 2 Figure 5 1 Sample Menu Tree ...

Страница 45: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 5 3 Figure 5 2 Setup Menu Tree ...

Страница 46: ...librated in Selects which slopes offsets expected span values etc will be updated and displayed 5 3 4 2 7 7 ZERO Press ZERO then ENTR will zero analyzer 5 2 2 2 7 1 7 2 SPAN Press SPAN then ENTR will span analyzer 5 2 2 4 7 1 7 2 5 2 2 3 CONC Expected NO NOx span concentrations and Conv efficiency setup Table 7 3 NOX CONC Enter expected NOx span concentration 5 2 2 Table 7 3 NO CONC Enter expected...

Страница 47: ... Automatic span check or calibration 5 3 2 PREV SEQUENCE Select a sequence of pre programmed calibration commands Scroll backwards 5 3 2 NEXT SEQUENCE Select a sequence of pre programmed calibration commands Scroll forwards 5 3 2 MODE Choose from a list of 7 modes plus disable 5 3 2 PREV Scroll back to choose type of calibration performed 5 3 2 NEXT Scroll forward to choose type of calibration per...

Страница 48: ...S TIMER ENABLE Enable Disable chosen sequence 5 3 2 6 2 START DATE Start date of selected sequence 5 3 2 6 2 START TIME Start time of selected sequence 5 3 2 6 2 DELTA DAYS Number of days to shift start time each time sequence is run 5 3 2 6 2 DELTATIME Number of hours to shift start time each time sequence is run 5 3 2 6 2 DURATION Number of minutes to spend at each step in sequence 5 3 2 6 2 CAL...

Страница 49: ... the output range 5 3 4 MODE Type of range output 5 3 4 SING All 3 outputs are on the same single range 5 3 4 1 AUTO All 3 outputs AutoRange between 2 different ranges 5 3 4 2 REM Same as AutoRange except external contacts set range 5 3 4 2 IND Each range can be set independently 5 3 4 3 OFFS Allows a offset bias voltage to all analog output channels 5 3 6 UNIT Unit selection menu 5 3 4 5 PPM Sele...

Страница 50: ...mmunications setup menu 5 3 8 BAUD Set the BAUD rate there are more RS 232 options in the VARS menu 5 3 8 ID Set the instrument ID 5 3 8 VARS Internal software variables 5 3 9 PREV NEXT JUMP EDIT PREV NEXT scroll up and down through the VARS menu Jump will go to variable number selected EDIT will allow changing the selected variable 5 3 9 VARS User level variables 5 3 9 DIAG Diagnostic menu 5 3 7 ...

Страница 51: ...ing Remote AutoRange the range change can be controlled remotely The TEST values will show the range the instrument is currently operating in and will dynamically display range change information when necessary Independent range option allows different ranges for each output When enabled there will be three range values displayed NO NOx and NO2 NOTE Each of the range modes Single range Auto range ...

Страница 52: ...ll to 5000 mV when there is large amounts of NO being measured If the PMT reading is consistently 5000 mV that indicates an off scale reading Typical readings bounce around which is normal AutoZero Voltage AZERO The AutoZero Voltage is the PMT output when the AutoZero valve is actuated It provides a zero reference which is subtracted from all NO and NOx readings The value typically will be near 0 ...

Страница 53: ...mperature is the temperature of the sample flow orifice The block is mounted near the rear of the instrument and is located upstream of the converter Running the converter at low pressure improves its conversion efficiency The normal temperature of the sample orifice block is 50 2 C and is controlled by the computer Converter Temperature CONV TEMP The converter temperature monitors the temperature...

Страница 54: ...ll change with varying atmospheric pressure like the weather because the sensor is an absolute pressure sensor It will also change with altitude NOx NO Slope and Offset Values NOx SLOPE NOx OFFS NO SLOPE NO OFFS The slope m and intercept b coefficients of 2 NOx and NO straight line equations y mx b determine the calibration of the M9110AH The slope parameter m can be thought of as a gain term whic...

Страница 55: ...erefore it is not possible to zero the instrument with high concentrations of span gas in the reaction cell If the ZERO key does not come on as expected check Section 9 2 9 5 2 2 3 Span Pressing the SPAN key along with ENTR will cause the instrument to adjust the SLOPE value of the internal formula so the instrument displays the span value The expected NOx and NO span concentrations must be entere...

Страница 56: ...r NO concentration m the slope x the conditioned PMT tube output b the offset y mx b In comparison with analog analyzers the slope term is equivalent to the span pot and the b term is equivalent to the zero pot Again like an analog analyzer there is only a limited range of adjustment allowed for either term and there are consequences of having the values near the high or low limits of their respec...

Страница 57: ...d is to have the M9110AH compute the efficiency using the CAL CONC CON CAL menu See the Calibration Section 7 10 Converter Efficiency for details If AutoRange is enabled there will be 2 converter efficiencies one for low range and one for high range The procedure is identical for each range To access the converter efficiency menu the path is CAL LOW CONC CONV for LOW range and CAL HIGH CONC CONV f...

Страница 58: ...quested from TELEDYNE 5 3 3 1 Data Channels The function of the Data Channels is to store report and view data from the analyzer The data may consist of NO NOx NO2 concentration or may be diagnostic data such as the sample flow or reaction cell pressure The M9110AH comes pre programmed with a set of useful Data Channels for logging concentration and predictive diagnostic data The default Data Chan...

Страница 59: ...LDAT Logs new slope and offset every time a zero or span calibration is performed also records the sample concentration reading just prior to performing a calibration NOTE This Data Channel collects data based on an event a calibration rather than a timer This Data Channel will store data from the last 200 calibrations This does not represent any specific length of time since it is dependent on ho...

Страница 60: ...E Only one of the following range choices can be active at any one time There are 3 range choices 1 Single Range 2 Auto Range A Remote Range 3 Independent Ranges 5 3 4 1 Single Range This range option selects a single range for all output channels NO NOx NO2 of the M9110AH To select Single Range press SETUP RNGE MODE SING then press ENTR To set the value for the range press SETUP RNGE SET and ente...

Страница 61: ...elect the range and display the concentration at the value and units of the un diluted gas in the stack The dilution probe dilutes the gas by a fixed ratio so the analyzer is actually measuring a much lower concentration than is actually present in the stack The software scales the diluted sample gas concentration readings so that the outputs show the actual stack concentrations Also when calibrat...

Страница 62: ...nging units affects all of the RS 232 values all of the display values and all of the calibration values Example If the current units are in ppm with the span value at 400 ppm and the units are changed to mg m3 the span value is NOT re calculated to the equivalent value in mg m3 Therefore the span value now becomes 400 mg m3 instead of 400 ppm Re enter the expected span concentrations in mg m3 uni...

Страница 63: ...OCK DATE and entering the date in a dd mmm yy format If you are having trouble with the clock running slow or fast the speed of the clock can be adjusted by selecting the CLOCK_ADJ variable in the SETUP MORE VARS menu 5 3 7 Diagnostic Mode The M9110AH Diagnostic Mode allows additional tests and calibrations of the instrument These features are separate from the TEST functions because each DIAG fun...

Страница 64: ...M9110AH Operating Modes The M9110AH has two main operating modes The instrument is normally in SAMPLE mode when it is taking data or doing a calibration The second main mode is the SETUP mode In this mode the many features of the instrument can be altered enabled or disabled Within these two main modes there are many other operating modes which are shown in Table 5 7 The mode the instrument is ope...

Страница 65: ...IAG AOUT D A output diagnostic test DIAG Main diagnostic menu DIAG I O Signal I O diagnostic DIAG RS232 RS232 output diagnostic SETUP x x Setup mode x x is software version SAMPLE ZS Sampling automatic dynamic zero and span calibration enabled SAMPLE Z Sampling automatic dynamic zero calibration enabled SAMPLE S Sampling automatic dynamic span calibration enabled SAMPLE A Sampling automatic cal En...

Страница 66: ...nverter is always out of the sample stream The output of the detector is sampled continuously Since only NO is being measured there are 2 advantages to this mode First it is possible to optimize for shortest response time Second NO is being continuously measured so that short transient events can be captured To select switching mode press SETUP MORE VARS and press NEXT to scroll to the MON_MODE va...

Страница 67: ...LOW SPAN CALIBRATION 9 SPARE 10 19 20 AUTORANGE HI CLOSED IF IN HIGH RANGE 11 21 22 SYSTEM OK CLOSED IF NO FAULTS PRESENT 12 23 24 RX CELL PRESS CLOSED IF ABS PRES 15 HG The Status Board schematic can be found in the Appendix Drawing 01087 5 7 RS 232 Interface The RS 232 communications protocol allows the instrument to be connected to a wide variety of computer based equipment The interface provid...

Страница 68: ...ccur see the Troubleshooting Section 9 3 2 Setup from the Front Panel There are 3 additional RS 232 setups that can be done via the front panel 1 Set the Instrument ID number by SETUP MORE COMM ID and enter a 4 digit number from 0000 9999 This ID number is part of every message transmitted from the port 2 Set the BAUD rate by SETUP MORE BAUD then select the desired BAUD rate 3 Set the RS 232 mode ...

Страница 69: ... bit 4 from Table 5 9 Once the feature is enabled to logon type LOGON 940331 940331 is the default password The password can be changed to any number from 0 to 999999 by the variable RS232_PASS To change the password enter the command V RS232_PASS 940331 which sets the password to the factory default Protocol of Port Communication The RS 232 interface has two protocols of communication because if ...

Страница 70: ...ommands in Terminal Mode In terminal mode all commands must be terminated by a carriage return commands are not processed until a carriage return is entered While entering a command you may use the following editing keys Table 5 11 RS 232 Terminal Mode Editing Keys Key Function CR carriage return Execute command BS backspace Backspace one character to the left ESC escape Erase entire line Control ...

Страница 71: ...ed to operate the instrument from a remote terminal If you are going to be writing computer programs to communicate with the M9110AH i e operating the port in COMPUTER MODE we suggest that you order a supplementary manual The RS 232 Interface This manual shows additional features of the port designed to support a computer driven interface program Please contact TAI for additional informations ...

Страница 72: ...ble W LIST use with W SET C LIST Print calibration commands C command Execute calibration command from Table 5 18 D LIST Prints all I O signal values D name Prints single I O signal value state D name value Sets variable to new value D LIST NAMES Lists diagnostic test names D ENTER name Enters and starts name diagnostic test D EXIT Exits diagnostic mode D SYS_RESET Resets analyzer same as power on...

Страница 73: ... is one of the two principal uses for the RS 232 interface You can effectively disable the asynchronous reporting feature by setting the interface to quiet mode see Table 5 9 All messages output from the analyzer including those output in response to a command line request have the format X DDD HH MM IIII MESSAGE X is a character indicating the message type as shown in Table 5 14 DDD HH MM is a ti...

Страница 74: ...ement V Variable W Warning There are 6 different types of messages output by the M9110AH They are grouped below by type in Table 5 15 Table 5 19 The meanings of the various messages are discussed elsewhere in the manual The TEST DIAGNOSTIC and WARNING messages are discussed in Sections 9 1 1 9 1 2 9 1 3 DAS and VARIABLES are discussed in Sections 5 3 3 and 5 3 9 CALIBRATE is discussed in Section 7...

Страница 75: ...ensation AZERO AZERO xxxxxx MV AutoZero offset value HVPS HVPS xxxxx V High voltage power supply DCPS DCPS xxxxxx MV DC power supply RCTEMP RCELL TEMP xxx C Reaction cell temperature BOXTEMP BOX TEMP xxx C Internal box temperature PMTTEMP PMT TEMP xxx C PMT temperature BLOCKTEMP BLOCK xxx C Sample flow control block temp CONVTEMP CONV TEMP xxx C Converter temperature RCPRESS RCEL xxx x IN HG A Rx ...

Страница 76: ...LP RCELL PRESS WARNING Rx cell pressure out of spec WBOXTEMP BOX TEMP WARNING Box temp out of spec WRCELLT RCELL TEMP WARNING Reaction cell temp out of spec WCONVTMP CONV TEMP WARNING Converter temp out of spec WOBLKTMP ORIFICE BLK TEMP WARN Orifice block temp out of spec WDCPS DC POWER SUPPLY WARN DC Power voltage out of spec WDYNZERO CANNOT DYN ZERO Dynamic zero cal out of spec WDYNSPAN CANNOT D...

Страница 77: ...ndividual warnings may be cleared via the front panel or the command line interface To clear the sample flow warning shown above the command would be W WSMPFLOW 5 7 5 CALIBRATION Commands and Messages Table 5 17 RS 232 Calibration Messages Message Description START ZERO CALIBRATION Beginning zero calibration FINISH ZERO CALIBRATION NO2 xxxxx ppm1 Finished zero calibration START SPAN CALIBRATION Be...

Страница 78: ... in Section 7 C LIST lists the calibration commands available The C command executes a calibration command which may be one of the following Table 5 18 RS 232 Calibration Commands Command Description C LIST List calibration commands C ZERO Enter zero calibration mode C SPAN Enter span calibration mode C COMPUTE ZERO Do a zero calibration C COMPUTE SPAN Do a span calibration C EXITZ Exit zero calib...

Страница 79: ...lyzer software and erases RAM Erases NO NOx NO2 conc values erases all DAS data Keeps setup variables and calibration same as installing new software version D EE_RESET Resets analyzer software and erases RAM and EEPROM Returns all setup variables to factory defaults resets calibration values 5 7 7 DAS Commands and Messages The M9110AH contains a flexible and powerful built in data acquisition sys...

Страница 80: ...perty is turned on the Data Channel will issue a report with a time and date stamp to the RS 232 port every time a data point is logged The report format is shown below D 94 08 00 0200 CONC AVG NXCNC1 1234 5 PPB D 94 08 00 0200 CONC AVG NOCNC1 1234 5 PPB D 94 08 00 0200 CONC AVG N2CNC1 1234 5 PPB One CONC report consists of D Type of report Diagnostic 94 08 00 Time and Date stamp Julian day Hr Min...

Страница 81: ...ttributes can be edited in a similar fashion 5 7 8 VARIABLES Commands and Messages The M9110AH operational modes are listed above To list the analyzer s current mode type V MODE Lists M9110AH current operational mode See Table 5 7 for list of operational modes and meanings Model M9110AH Internal variables The M9110AH has a number of internal setup variables Essentially all of these are set at time...

Страница 82: ...sure you understand the consequences of the change We recommend you call the factory before changing the settings on any variables The general format for changing the settings on a variable is V LIST name value warn_lo warn_hi For example to change the warning limits on the box temperature type V BOX_SET 30 10 50 and the CPU should respond with V DDD HH MM IIII BOX_SET 30 10 50 0 60 The CONFIG com...

Страница 83: ...num Converter 8 External Desiccant Canister 9 Alternate Bypass Flow Orifice 500 cc min 6 1 Rack Mount Options Rack Mount including slides and ears permits the Analyzer to be mounted in a standard 19 wide x 24 deep RETMA rack This permits convenient slide out operation for servicing It can also be ordered without slides for applications requiring the instrument to be rigidly mounted in a RETMA rack...

Страница 84: ...gas plus zero gas See Figure 2 2 and Figure 2 3 The valves are can be operated by several methods shown in Table 6 1 Table 6 1 Zero Span Valve Operation Mode Description Reference Section 1 Front panel operation via CALS and CALZ buttons Calibration Section 7 Manual Zero Span Check 2 Automatic operation using AUTOCAL Setup and use of AUTOCAL is described in Table 6 2 and Section 7 2 3 Remote opera...

Страница 85: ... set to OFF the sequence will remain in memory but will not execute 2 START DATE calendar date to start sequence dd mmm yy day month year format 3 START TIME time of day sequence will start hh mm hours minutes in 24 hr format 4 DELTA DAYS and DELTA HOURS MIN is the time between each activation of the sequence By setting the Delta Hours variable to be other than an exact number of days the sequence...

Страница 86: ...HI span gas in AutoRange mode Span cals SINGLE or IND range with HI span gas LO span is cal check only Span checks LO range with LO span gas Span checks HI range with HI span gas Does 2 point check in SINGLE or IND range mode LO Span cals LO range with LO span gas Span cals SINGLE or IND range with LO span gas Span checks LO range with LO span gas Span checks SINGLE or IND range with LO span gas H...

Страница 87: ... can be ordered with an External Thermal Converter Its conversion performance is very similar to the Mini HiCon The advantage of this converter is that it is less prone to plugging because it is constructed of larger diameter tubing also the conversion efficiency is very high because the thermal converter is followed by a molybdenum converter Since the converter is external to the M9110AH the resp...

Страница 88: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 6 6 INTENTIONALLY BLANK ...

Страница 89: ...nel can result from calibration gasses containing no oxygen All calibration gasses must have a dew point of 20o C NOTE The quality of calibration can be no better than the accuracy and quality of the calibration gasses used See Section 7 9 Calibration Quality for recommendations on calibration gasses and Section 9 2 10 NOTE If there are any problems completing any of the following procedures refer...

Страница 90: ...tact Closure Operates Z S valves with rear panel contact closures Without valves can be used to switch instrument into zero or span cal mode Used for either checking or adjusting zero span 7 5 NO Only Mode Calibration Covers requirements if calibrating in NO only mode 7 6 NOx Only Mode Calibration Covers requirements if calibrating in NOx only mode 7 7 Calibration Requirements for AutoRange or Rem...

Страница 91: ...l Zero Calibration Procedure Zero Gas Thru Sample Port Step Number Action Comment 1 Check Before Calibration Check Before Calibration Section 7 above before proceeding 2 Press CAL The M9110AH enters the calibrate mode from sample mode The zero gas must come in through the sample port 3 Select LO or HI Range If AutoRange is enabled you will be prompted for which range to calibrate Select the LO or ...

Страница 92: ...also be entered from CALS or CALZ 3 Press ENTR Pressing ENTR stores the NO span value and returns the prompt to the CONC menu 4 CAL CONC NO This key sequence causes the M9110AH to prompt for the expected NO concentration Enter the NO span concentration value by pressing the key under each digit until the expected value is set This menu can also be entered from CALS or CALZ 5 Press ENTR Pressing EN...

Страница 93: ...is selected it is necessary to select which range to calibrate This prompt will not be displayed unless Autorange or Remote range is selected 4 Wait 10 min Wait for reading to stabilize at span value 5 Press SPAN If you change your mind after pressing SPAN you can still press EXIT here without spanning the instrument 6 Press ENTR Pressing ENTR actually changes the calculation equations and causes ...

Страница 94: ...ion 7 before proceeding 2 Press CALZ The analyzer enters the zero calibrate mode This switches the sample cal and zero valve to allow zero gas to come in through the zero gas inlet port in the rear panel 3 Select LO or HI range If AutoRange is enabled you will be prompted for which range to calibrate Select the LO or HI range then press ENTR 4 Wait 10 min Wait for reading to stabilize at zero valu...

Страница 95: ...ses the instrument to read the expected NO and NOx span concentrations 6 Press EXIT The Zero Span valves are switched back to admit gas through the sample port and instrument returns to SAMPLE mode Immediately after calibration data is not added to the DAS averages 7 3 Dynamic Zero Span Calibration Using AutoCal The M9110AH can be automatically calibrated periodically using the Zero Span Valve Opt...

Страница 96: ...alves are operated A span check does not calibrate the instrument when the valves are operated To calibrate the M9110AH when the valves are operated go to the VARS section on the front panel menus Press SETUP MORE VARS then scroll to DYN_ZERO DYN_LO_SPAN or DYN_HIGH_SPAN and set the variable to ON With the variable in the ON state the M9110AH will calibrate when the contact closure is released Tab...

Страница 97: ...fference to note is that only one channel namely the NOx channel will be checked or calibrated For example in Table 7 3 Entering the Expected Span value only the NOx concentration is required The NO NOx valve is continuously in the NOx mode Since the instrument is always in NOx mode it is not possible to apply converter efficiency compensation to the NOx value This is because the efficiency should...

Страница 98: ... calibration parameters That is NOx and NO slopes and NOx and NO offsets and one converter efficiency parameter The calibration of the M9110AH using independent range is the same as calibration in single range To achieve independent ranges the computer scales the 3 outputs using the ranges keyed in by the operator 7 9 Calibration Quality After calibration is complete it is very important to check ...

Страница 99: ...s displayed The SLOPE value for NO should be 1 0 0 3 If the SLOPE is in the acceptable range the instrument will perform optimally If the value is not in this range check Section 9 1 6 NOTE The NO and NOx slopes should be equal within 0 1 4 Scroll the TEST function menu until the NO OFFSET is displayed The instrument will now display the NO OFFSET value It should also have a value near zero 0 0 50...

Страница 100: ...n only if the Instrument is measuring NO2 gas and ratio is between the limits of 0 80 1 20 5 Press EXIT EXIT will return instrument to SAMPLE mode Method 2 If the converter efficiency is determined by some external means the value can be directly entered Press CAL CONC CON SET then key in the ratio and press ENTR then EXIT 7 11 Recommendations for CEM Applications 7 11 1 Calibration Gasses The fol...

Страница 101: ...m s slope and offset will be adjusted to produce the correct response of the system Once per quarter the M9110AH should be calibrated using one of the procedures in Section 7 Also a 3 point linearity check zero low span high span will be performed to confirm system linearity It is important to note that when doing a linearity check the calibration gasses have analysis errors For example if 2 stand...

Страница 102: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 7 14 INTENTIONALLY BLANK ...

Страница 103: ...ilter for Ozone Scrubber Replace every 24 months Figure 4 2 Drierite Canister Replace when Drierite changes from blue to red Section 9 3 6 Reaction cell window Clean annually or as necessary Section 9 3 8 Figure 8 3 Ozone Flow Check TEST function every year Figure 9 7 Section 9 3 7 Sample Flow Check TEST function every year Figure 8 4 Figure 8 5 Section 9 3 7 Converter Check efficiency every 6 mon...

Страница 104: ...low A discoloration of the filter membrane indicates that the filter is dirty and should be changed To change the filter 1 Locate the sample filter on the outside rear panel 2 Unscrew the hold down ring remove the Teflon o ring and then the filter disc See Figure 8 1 for an exploded view of the filter assembly 3 Replace the filter being careful that the element is fully seated in the bottom of the...

Страница 105: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 8 3 Figure 8 1 Replacing the Particulate Filter ...

Страница 106: ...atic fittings from the valves B Remove the Molex connectors to the valve bracket thermocouple wire and cartridge heater C Remove the converter assembly from the chassis by loosening the 4 captive screws that secure the assembly to the chassis 3 Disconnect the gas fittings and power cable grounding from the can 4 Remove the valve assembly and bottom bracket and re attach those two parts to the repl...

Страница 107: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 8 5 Figure 8 2 Converter Assembly ...

Страница 108: ... of the following A Ammonia free glass cleaner B Baking soda sodium bicarbonate and water solution C Simple Green 10 1 dilution Rinse with distilled or de ionized water wipe with a clean tissue and dry It is normally not necessary to clean the ozone flow or sample flow orifices because they are protected by fritted filters However the following procedure is included here for completeness 8 The man...

Страница 109: ...serting the window drop the o ring in before inserting the sleeve Reconnect pneumatics and heater connections then re attach the pneumatic sensor assembly 11 Perform leak check procedure covered in Section 8 6 Perform light leak procedure covered in Section 8 7 The cleaning procedure is complete 12 The analyzer span response will fall 10 12 in the first 1 2 days after cleaning due to the window re...

Страница 110: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 8 8 Figure 8 3 Reaction Cell Assembly ...

Страница 111: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 8 9 Figure 8 4 Sample Bypass Flow Control Assembly ...

Страница 112: ...ponse time It is important that the pneumatic system be periodically inspected and thoroughly cleaned if necessary Clean by disassembling and passing methanol through three times Dry with nitrogen or suitable clean zero air Also inspect all pneumatic lines for cracks and abrasion on a regular basis Replace as necessary Refer to the pneumatic diagram in Figure 8 5 Figure 8 6 ...

Страница 113: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 8 11 Figure 8 5 Pneumatic Diagram ...

Страница 114: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 8 12 Figure 8 6 Pneumatic Diagram with Zero Span Valves ...

Страница 115: ...and zero air inlet if Z S valve option present and connect leak checker to exhaust port CAUTION Pressure must be less than 15 psi 3 Pressurize system and check for leaks by watching overall pressure The pressure should not drop more than 1 Hg in 5 minutes 0 5 PSIG in 5 min If instrument fails pressure test each fitting needs to be leak checked with soap solution to find the location Be careful tha...

Страница 116: ... an insulating surface such that the board edge pins on the PCB are on the left The PROM chip will be at the top center See Figure 9 2 for prom location Gently pry the chip from its socket and replace it with the new chip Install the chip in the left end of the socket with the notch facing to the right Make sure that all of the legs insert into the socket correctly 5 Re attach the CPU board to the...

Страница 117: ...n Appendix A 1 NOTE The values of the readings shown on the front panel of the instrument may at times read XXXXXX This means that the reading is off scale and therefore meaningless General Troubleshooting Hints 1 Think of the analyzer as three sections Section 1 Pneumatics Over 50 of all analyzer problems are traced to leaks in the pump sample filter instrument internal pneumatics calibrator or e...

Страница 118: ...y requires 24 hours for levels to return to normal 6 Check the Offset value in the TEST functions Compare it to the value in the factory checkout Table 2 1 If the reading is significantly greater than the factory test value the reaction cell could be contaminated or there could be a light leak in the cell Verify this fault by turning the ozone generator off and see if the AutoZero reading drops mo...

Страница 119: ...rator Manual 01620 Rev F 9 3 9 1 Operation Verification Diagnostic Techniques 9 1 1 Fault Diagnosis with TEST Variables The Table 9 1 indicates possible fault conditions that could cause the TEST functions to be outside the acceptable range ...

Страница 120: ... value should be compared to the value observed in the factory check out Faults that cause high noise values are 1 Gas leaks 2 Light leak 3 Faulty HVPS 4 Defective Preamp board 5 Outgassing Moly converter 6 PMT recently exposed to room light 7 Dirty contaminated reaction cell 8 Mis calibrated slope offset outside of limits SAMPLE FLW 290 cc min 30 This is the instrument flow It is computed using t...

Страница 121: ...m 1 above See Section 9 1 3 3 3 Sampling zero gas signal from 1 2 plus signal from ozone generator air 4 Sampling pure NO span gas signal will be 1 2 3 above plus signal from chemiluminescent reaction Slight pulsation s will be noticed as the M9110AH switches from NO to NOx This is due to differences in flowrates Cv in each channel These differences are taken out in the calibration process resulti...

Страница 122: ...DC A value in the 400 to 600 volt range is common for the M9110AH DCPS 2500 200 mV DCPS is a composite of the 5 and 15 VDC supplies It has been arbitrarily set at 2500 200 mV If it is not in this range one of the voltages in the supply is not working Check the procedures for diagnosing the Power Supply Module RCELL TEMP 50 2 The reaction cell temperature is controlled to 50 C 2 C by the computer I...

Страница 123: ...d increase noise SAMP PRESS 29 5 Hg at sea level The sample pressure is taken upstream of the reaction cell It usually runs about 0 5 less than ambient pressure due to the restrictions in the sample intake tubing Sample pressure should be within 1 Hg of atmospheric pressure The pressure sensor used reports absolute pressure and therefore is sensitive to altitude weather fronts and room air conditi...

Страница 124: ...ion for an alarm is met the alarm is displayed on the front panel and the warning is transmitted out the RS 232 port Any time the instrument is powered up the SYSTEM RESET alarm will be displayed Generally it is ok to ignore warnings that are displayed shortly after power up only if they persist should they be investigated Table 9 2 shows the warning messages and gives some possible causes ...

Страница 125: ...out of spec warnings are caused by leaks pump failure or disconnected pump BOX TEMP WARNING Box temp out of spec Instrument fan failure enclosure temperature failure Operation of the M9110AH in a too warm or cold environment will cause degradation of data quality and shorten the life of the instrument RCELL TEMP WARNING Reaction cell temp out of spec The warning message is most often present durin...

Страница 126: ... in Section 9 1 6 CANNOT DYN SPAN Dynamic span cal out of spec The reading of the PMT was too high or low for the SPAN button to appear Make sure the instrument is receiving correct concentration span gas Make sure the expected span concentration is entered Check for dirty reaction cell Do the factory calibration procedure located in Section 9 1 6 A D NOT INSTALLED V F board has failed The V F boa...

Страница 127: ...output is created by 4 digital to analog converters located on the V F card This selection starts a procedure to calibrate these outputs Refer to Section 9 3 3 1 for a detailed procedure TEST CHANNEL Using the test channel it is possible to route some of the internal analog signals out of the 4th analog output port This Diagnostic mode is useful for intermittent problems since the signal can be ca...

Страница 128: ...act closure circuitry 3 EXT_LOW_SPAN NO Shows state of status input bit to switch the low span concentration valve in the zero span valve option 4 REMOTE_RANGE_HI NO Shows state of status input bit to switch the remote range control from low to high range 5 SPAN_VALVE YES Switches the Span valve Use this bit to test the valve function 6 CAL_VALVE YES Switches the Cal valve Use this bit to test the...

Страница 129: ...e ozone generator to turn on 15 ST_LOW_SPAN_CAL YES Status Bit state of the low concentration span valve Logic high valve open to admin span gas Logic low valve closed 16 AUTOZERO_VALVE YES Switches the AutoZero valve Use this bit to test the valve function 17 ST_RCELL_PRESS YES Status Bit Reaction Cell Pressure alarm Logic high pressure out of acceptable range Logic low pressure inside acceptable...

Страница 130: ... Low Instrument power is off 26 ST_SYSTEM_OK YES Status Bit System OK Logic High No instrument warnings present Logic Low 1 or more alarms present 27 ST_HIGH_RANGE YES Status Bit Autorange High Range Logic High M9110AH in high range of autorange mode Logic Low M9110AH in low range of autorange mode 28 PMT_SIGNAL NO Current PMT voltage Same as PMT voltage in TEST menu Bi polar typically in 0 5000 m...

Страница 131: ...put of HVPS is 1000x value present 700 mV 700 VDC output 39 DAC_CHAN_0 NO Output of NOx channel in mV 40 DAC_CHAN_1 NO Output of NO channel in mV 41 DAC_CHAN_2 NO Output of NO2 channel in mV 42 DAC_CHAN_3 NO Test Channel output Also second NOx output 43 NOX_CONC YES NOx DAC programming voltage The following 3 signals can be set to output specific voltages to each DAC Use in conjunction to ANALOG O...

Страница 132: ...ibration procedure 4 To turn off ET press EXIT If ET is a steady that means the Power Supply Module Preamp buffer amplifier V F CPU and display are all working properly 9 1 3 3 Optic Test Optic test turns on a small LED inside the PMT housing which simulates the signal from the reaction cell OT tests the entire signal detection subsystem By observing the level noise and drift of this test correct ...

Страница 133: ... the test This test is useful for testing the accuracy linearity of the analog outputs 9 1 3 6 DAC Calibration The Digital to Analog Converters DAC are calibrated when the instrument is set up at the factory Re calibration is usually not necessary but is provided here in case the V F board needs to be replaced and re calibrated The procedure for using the DAC Calibration routines is in the Trouble...

Страница 134: ...rates instrument during AutoCal Sequence or external contact closure or RS 232 command 5 CONC_LIM_ENA LOGIC NO NO YES Enable concentration limit alarms 6 NOx_CONC_LIM PPM 0 5000 NOx concentration limit alarm 7 NO_CONC_LIM PPM 0 5000 NO concentration limit alarm 8 NO2_CONC_LIM PPM 0 5000 NO2 concentration limit alarm 9 SFLOW_SET cc min 290 0 1000 Nominal sample flow rate 10 OFLOW_SET cc min 250 0 5...

Страница 135: ...ues around 1150 mV indicate zero flow Typical values for 80 cc min ozone flow are around 1800 mV Voltage should be steady indicating stable flow SAMPLE FLOW 0 cc min 1000 cc min The sample flow is calculated from the upstream pressure as measured by the SAMPLE PRESSURE transducer SAMPLE PRESSURE 0 Hg Abs 40 Hg Abs The sample pressure is measured by an absolute pressure meter The absolute pressure ...

Страница 136: ...s in a 25o C room the Box temp would be about 30o C and have a TEST channel voltage of about 2000 mV DCPS VOLTAGE 0 mV 5000 mV The DCPS is a composite of several DC power supply voltages in the instrument It has been arbitrarily set at 2500 mV which is typical HVPS VOLTAGE 0 V 5000 V The HVPS voltage is a scaled up reading of the programming voltage going to the HVPS Zero to 1000 mV corresponds 0 ...

Страница 137: ...e instrument to sample zero gas for at least 10 minutes to fill the internal data filters with zero readings The reading is stable when the STABIL TEST function drops to 2 0 or less Then zero the instrument by CAL ZERO ENTR 6 Set the expected span concentration to 80 ppm Enter the expected NOx concentration of 80 ppm by pressing CAL CONC NOX Then press CAL CONC NO to enter the expected NO concentr...

Страница 138: ...edure 1 Any time the gain of the PMT buffer amplifier circuit R19 is changed that will change the ET reading Since the gain was adjusted in the above procedure do the following to re adjust the ET signal 2 To re adjust ET press SETUP MORE DIAG then scroll to ELEC TEST and press ENTR 3 Scroll the TEST functions until PMT is displayed 4 Adjust R27 until 2000 mV 50 is displayed 5 Press EXIT to return...

Страница 139: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 9 23 Figure 9 1 Span Calibration Voltage ...

Страница 140: ...O leaking into zero air line 4 Change in span gas concentration A Zero air or ambient air leaking into span gas line B Calibration gas tank exhaustion 5 Leak in the NO NOx or AutoZero switching valves 9 2 1 AC Power Check 1 Check that power is present at main line power input Verify that correct voltage and frequency is present If unit is set for 240 VAC and is plugged into 115 VAC it will appear ...

Страница 141: ...k to the vacuum manifold Briefly plug the fitting on the vacuum manifold with your finger You should notice a vacuum build up B To test the sample flow orifice remove the tube that connects the orifice block to the vacuum manifold bypass flow tube Plug the fitting on the orifice block Remove the fitting that connects the orifice block to the sample inlet on the rear panel Briefly plug the fitting ...

Страница 142: ...nctions are greater than 50 mV this indicates reaction cell contamination 3 Check for leaks 4 Corruption of the AutoZero filter If a significant signal was detected during the AutoZero cycle that higher reading can enter the AutoZero filter The value of the AutoZero filter is subtracted from the current reading thus producing a negative reading High AutoZero readings can be caused by A Leaking Aut...

Страница 143: ...k SLOPES in TEST function 8 Reaction cell pressure too high Check RCEL TEST function 9 2 6 Unstable Span Common causes are 1 Leak in pneumatic system 2 Light leak check the sensor module with strong light Check for missing 0 rings in Sensor Assembly 3 Sample lines or sample filter dirty clean or replace 4 Plugged sample inlet orifice clean with methanol and sonic cleaner 5 Defective HVPS see HVPS ...

Страница 144: ...ck the PMT TEST function reading The mV reading should be 8x the expected span concentration in step 1 above for range settings up to 500 ppm If over 500 ppm the value should be 0 8x the expected span concentration For example if the expected span gas concentration is 80 ppm the PMT reading should be 8 80 640 mV 30 3 Check ET and OT for the correct response 4 If the above do not check out perform ...

Страница 145: ...f the CO2 concentration is markedly different between tanks the CO2 quenching effect on NO will produce non linearities This effect may also be present with gas standards that blend SO2 N2 NO The problem arises because the gas manufacturer uses FT IR to do the analysis FT IR does not have the same interaction between components as do chemiluminescent analyzers 3 Variation in sample inlet pressure ...

Страница 146: ...less steel or Teflon 4 Sample vent line located too far from instrument sample inlet Locate sample inlet vent as close as possible to analyzer 5 Insufficient time allowed for purging of lines upstream of analyzer 6 Leaking NO NOx or AutoZero valve The leak can either be external or cross port 7 Insufficient time allowed for calibration cal gas source to become stable 8 Converter temperature too lo...

Страница 147: ...6 Power down the analyzer and re attach the 24 line cable to J2 and proceed to the next test 9 3 1 2 Single Board Computer The SBC40 is a full function computer designed for instrument control applications It consists of a 16 bit 8080 microprocessor 2 serial and one parallel ports standard bus interface and 4 sockets for memory The memory sockets consist of 256k ROM containing the multitasking ope...

Страница 148: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 9 32 Testing and operation of the CPU RS 232 port is described in Section 9 3 2 ...

Страница 149: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 9 33 Figure 9 2 CPU Board Jumper Settings ...

Страница 150: ...hould cause the SETUP menu to be displayed Example 3 If the 5 character field above any key is blank the key is not defined pressing the key has no effect The 3 status LED s indicate several functional states of the instrument such as calibration fault and sample modes The state of the LED s is controlled by 3 lines on the parallel port of the SBC40 Functioning of the LED s can be checked by 1 Tur...

Страница 151: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 9 35 Figure 9 3 RS 232 Pin Assignments ...

Страница 152: ...PROCOMM and your wiring connections are correct you will be able to communicate with the analyzer If connecting to a modem check the following Modems are especially difficult because they may have pins that need to be at certain EIA RS 232 levels before the modem will transmit data The most common requirement is the Ready to Send RTS signal must be at logic high 5V to 15V before the modem will tra...

Страница 153: ...pendix The overall operation of this board is quite complex to fully check it out in all of its operational modes is not possible in the field Therefore a few of simple tests are described here that test one analog input channel the 4 analog output channels one digital input and one digital output 1 V F board analog input test Each analog channel is routed through a programmable 16 channel multipl...

Страница 154: ...bits are assign as calibration controls See Section 7 4 for information calibration using external contact closures To test the digital inputs A Turn on the M9110AH B Connect a jumper wire across pins 1 and 2 of the REMOTE IN rear panel connector as shown in Figure 2 2 C Shortly after closure is made the instrument should switch into zero mode as indicated on the front panel display D Remove the j...

Страница 155: ...rs of jumpers JP1 JP8 one pair for each analog output channel Each channel can be configured for either voltage or current output Use Table 9 7 to configure the jumpers Table 9 7 Motherboard Jumper Settings Analog output Terminal Pair Rear panel Jumper Pair Jumper Setting for Voltage Mode Jumper Setting for Current Mode DAC 0 NOx 3 4 JP3 JP4 B C A B DAC 1 NO 5 6 JP1 JP2 B C A B DAC 2 NO2 1 2 JP5 J...

Страница 156: ...V output 5 V output or isolated current loop Switch State Comment 3 OFF Use for isolated current loop or 5 V output 4 ON Use for isolated current loop or 5 V output 5 OFF Use for isolated current loop or 5 V output 6 OFF Use for isolated current loop or 5 V output 1 V output Switch State Comment 3 OFF Use for 1 V output 4 OFF Use for 1 V output 5 ON Use for 1 V output 6 OFF Use for 1 V output 100 ...

Страница 157: ...ting must match the switch and jumper settings made previously Second the voltage output can be biased up to 10 of the selected range with the OFFSET parameter Just key in the desired offset or press EXIT to leave the OFFSET at zero F For DAC channels in VOLTAGE mode press CAL This will cause the instrument to automatically calibrate the channel G For DAC channels in current mode first connect a 2...

Страница 158: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 9 42 Figure 9 4 V F Board Jumper Settings ...

Страница 159: ...e amplifier outputs are brought out to test points on the edge of the board Refer to the schematic in the Appendix for details The voltages can also be read using the DIAGNOSTIC SIGNAL I O feature See Table 9 4 for details Thermistor Temperature Amplifier Adjustments The 4 temperature amplifiers are controlled by a common pot R34 on the upper edge of the card If the temperature readouts are in err...

Страница 160: ...If brownout conditions are met the DISP_BROWNOUT line is asserted and the CPU sends a hardware RESET command to the display and sends a BRNOUT RESET pulse back to U4 Brownout conditions will be noticed by the display flashing every 8 seconds 9 3 4 3 Status Output Lines External Contact Closures The Status lines consist of 4 active input lines and 12 active output lines Individual lines are set or ...

Страница 161: ...ruments Recommended load Rl 100 600 Max 600 V F analog output voltage setting 10V Full Scale Default Setting 4 20 mA To convert from 4 20 mA to 0 20 mA output refer to Status Temp Schematic 01087 sheet 2 and the procedure in Section 9 3 3 1 Isolated 4 20 mA or 0 20 mA Option This option is recommended where maximum isolation from ground loops is required Specifications include up to 1500 V rms com...

Страница 162: ...nt functions It takes logic signals from the V F board and uses them to switch 4 115 VAC and 4 12 VDC loads The board also contains the instrument central grounding tie point It routes unswitched AC and DC power as needed Connector P2 programs the power transformers to take 115 220 230 or 240 VAC inputs Power Transformers There are potentially 2 input power transformers in the PSM The multitap tra...

Страница 163: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 9 47 Figure 9 5 Power Supply Module Layout ...

Страница 164: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 9 48 Figure 9 6 Electrical Block Diagram ...

Страница 165: ...f each LED Table 9 9 Power Supply Module LED Operation No Function Description 1 NO NOx Valve Should switch about every 6 sec On NOx mode Off NO mode 4 AutoZero Valve Should switch every 2 minutes On Azero Off Sample mode 5 Ozone Generator Power Power to ozone generator is off for 30 minutes after turning on an instrument that has been off for a long time If the instrument has been turned off for ...

Страница 166: ... parts down stream of the generator 2 Contaminated ozone generator cartridge Disconnect fittings and run water through the cartridge to clean 3 Failure of the driver board Table 9 10 Ozone Generator Control Conditions Condition Description Ozone Generator 1 Manual override off SETUP MORE DIAG OZONE GEN OFF 2 Manual override on ON 3 Ozone flow below low warning limit for 5 minutes OFLOW_SET setup v...

Страница 167: ... with any other procedures check the drier for leaks Occasionally the drier gets contaminated The manufacturer of the drier recommends replacing the drier rather than trying to clean it If cleaning is chosen the following options are available 1 Dirt Clean any solids from dryer inlet by brushing Use clean dry air to blow any loose particles from the inlet De ionized water or dilute 5 10 conc HCl i...

Страница 168: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 9 52 Figure 9 7 Ozone Generator Subsystem ...

Страница 169: ...gram of this board From these three sensors four values are computed and displayed on the front panel TEST functions They are 1 Ozone flow measured directly S3 R3 2 Reaction Cell Pressure measured directly S2 R2 3 Sample gas pressure measured directly S1 R1 4 Sample Flow computed from sample pressure and reaction cell pressure S1 S2 The above pressures and flows are filtered to produce the front p...

Страница 170: ...Select RCEL TEST function Use a calibrated absolute pressure meter to make small adjustments to R1 until the correct absolute pressure is displayed 29 92 in Hg A is the target value at sea level The rate of decrease is about 1 Hg per 1000 ft of altitude 4 Re connect the sample pump The RCELL reading should now display the reaction cell absolute pressure of approximately 5 in Hg A To adjust the SAM...

Страница 171: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 9 55 Figure 9 8 Flow Pressure Sensor ...

Страница 172: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 9 56 Figure 9 9 NOx Sensor Module ...

Страница 173: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 9 57 Figure 9 10 NOx Sensor Module ...

Страница 174: ...mp board The CPU controls the temperature by toggling a bit on the V F board The V F board TTL logic controls a solid state switch on the Switch Board in the PSM The switched 115 VAC comes out of the PSM to a connector near the underside of the reaction cell A warning message may be present during initial warm up due to the temperature being below the 50 C setpoint 9 3 8 3 Preamp Board The NOx Pre...

Страница 175: ...re 9 11 The temperature is controlled by a proportional temperature controller located on the Preamp board The input voltage from the supply is 15 VDC Typical current through the cooler at room temp is about 1 5 to 2 A At normal room temperatures the 7 C set point should be maintained within 0 1 C The current and voltage can be measured at test points on the fan shroud at one end of the NOx sensor...

Страница 176: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 9 60 Figure 9 11 PMT Cooler Subsystem ...

Страница 177: ...ly Adjustment of the HVPS is covered in the Factory Calibration Procedure in Section 9 1 6 To troubleshoot the HVPS 1 Turn off the instrument 2 Remove the cover and disconnect the 2 connectors at the front of the NOx Sensor Module 3 Remove the end cap from the sensor 4 Remove the HVPS PMT assembly from the cold block inside the sensor Un plug the PMT tube 5 Re connect the 7 pin connector to the Se...

Страница 178: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 9 62 Figure 9 12 High Voltage Power Supply ...

Страница 179: ...sample mode the bottom sample valve is open and the LED is ON Check flow through the sample inlet port on the rear panel B In CALZ mode the second from the bottom zero gas valve is open and the LED is ON Check flow through the zero gas port on the rear panel C In CALS LOW SPAN mode the third from the bottom span gas valve is open and the corresponding LED is ON Check flow through the low span gas ...

Страница 180: ...procedure 9 3 10 2 Pump The external sample pump is capable of maintaining the cell pressure at 5 Hg A If higher pressures are noted the pump may need servicing Common pump problems and causes are 1 Failure of ozone scrubber thus allowing ozone into the pump Ozone is very corrosive and causes failure of the diaphragm Replace catalytic ozone scrubber in the NO2 to NO converter replace charcoal scru...

Страница 181: ...TELEDYNE Model 9110AH NOX Analyzer Operator Manual 01620 Rev F 9 65 INTENTIONALLY BLANK ...

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