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NDIR Gas Analyzer 

Operational Theory 2 

 

 

 

 

 

Teledyne Analytical Instruments., - Rev. 3 

17 

• 

Stainless steel, brass or copper fittings are installed for mating 
to the customer’s sample system or throughout the system for a 
LSC supplied sample system. 

• 

A different filter and a filter housing is used  

NOTE: 

Because these models are often supplied for custom applications, 
please check the front of this manual for any included Addendum 
which will describe features, notes and warnings that specifically 
apply to your instrument. 

Summary of Contents for IR7000

Page 1: ...OPERATING INSTRUCTIONS FOR IR7000 NDIR Gas Analyzer REV 3 ...

Page 2: ...the dimensions shape or weight of any parts in so far as such alterations do not adversely affect our warranty Important Notice This instrument provides measurement readings to its user and serves as a tool by which valuable data can be gathered The information provided by the instrument may assist the user in eliminating potential hazards caused by his process however it is essential that all per...

Page 3: ...11 2 3 1 Power Supply Board 11 2 3 3 Main Board 12 2 3 4 Display Board 14 2 3 5 I O Board 14 2 4 Sample System 14 2 5 Internal Gas Handling System 16 Installation 18 3 1 Overview 18 3 2 Unpacking and Installation 18 3 3 Mounting the Analyzer 18 3 4 Gas Connections 19 3 5 Sample System Considerations 20 3 6 Electrical Connections 21 3 6 1 Analog Output 22 3 6 2 Analog Output Connections 25 3 6 3 So...

Page 4: ...h 55 6 2 2 Cleaning the Sample Cell 58 6 2 3 Replacing the IR Source 59 6 2 4 Replacing the Battery Portable Model Only 59 6 2 5 Changing the Fuse 60 6 3 Display Messages 61 6 3 1 Error Messages 62 6 3 2 Normal Operation Messages 65 6 3 3 Normal Operator Induced Messages 66 Appendix 69 A 1 Specifications 69 A 2 Recommended Spare Parts List 71 A 3 RS 232 Communication Protocol 72 A 3 1 Codes for e ...

Page 5: ...on manual carefully and familiarize yourself thoroughly with its contents Do not ignore any warnings or cautions or operate this equipment with any safety feature Symbol Heading Typeface and Description WARNING 12 point bold typeface Contains important information which if ignored could result in personal injury or death CAUTION 12 point bold typeface Contains important information which if ignore...

Page 6: ... all documentation that comes with this instrument especially any application notes or addenda which among other important details may specify the nature and properties of the gas to be analyzed Unless specifically designed for hazardous environment application this instrument is not designed to handle explosive or flammable gases Exposed electrical terminals pose a substantial risk of ignition if...

Page 7: ...ssary risk of harm Return the analyzer to Teledyne Analytical Instruments for service and repair to ensure proper functioning of the unit WARNING Do not operate a damaged instrument If any of the built in safety features of this instrument is impaired either through physical damage excessive moisture or any other reason IMMEDIATELY REMOVE POWER Do not use the instrument until safe operation can be...

Page 8: ...Safety IR7000 S 4 Teledyne Analytical Instruments Rev 3 THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 9: ...Introduction ...

Page 10: ...ess gas stream Four user definable chart ranges are available for accurate monitoring over the full range of the process gas composition A trace analysis unit is available for analysis at low ppm levels This manual describes the setup and operation of the Model IR7000 It also covers particular features of the other analyzers in the IR7000 series where setup and operation differs from the standard ...

Page 11: ...rack mount model IR7000 is shown in Figure 1 1 and the portable IR7000P is shown in Figure 1 2 The explosion proof models have the analysis unit installed in an explosion proof housing and employ steel tubing and fittings in the sample system The control unit on these models is separate from the analyzer and generally located outside the hazardous environment ...

Page 12: ...t output High and low alarms or limits with adjustable setpoints The alarms are configured at the factory for either latching or non latching operation Modular design for easy maintenance Configured to easily accommodate an optional oxygen channel for simultaneous oxygen analysis at either 0 25 or 0 100 Patented IR detector uses a sensitive mass flow sensor and a dual chamber for rapid analysis of...

Page 13: ...le Dual optical bench for simultaneous monitoring of 2 gases Oxygen channel 0 25 or 0 100 The IR7000 series easily accepts Teledyne analytical Instruments oxygen electrochemical cell for measuring oxygen levels in the process gas RS 232 port for control input and data output via a remote computer 4 20ma analog current output either isolated or non isolated ...

Page 14: ...e mass flow sensor located in the tiny orifice between the 2 chambers senses the flow in both directions and outputs a signal related to the concentration A high resolution electronic circuit is employed to provide synchronous detection of the flow sensor s signal This circuit allows the IR7000 to measure gas compositions over a wider range of the infrared spectrum than conventional photon based I...

Page 15: ...n the front panel for monitoring the sample flow through the instrument Power Switch an off on switch is mounted on the front panel for powering up the instrument Sample Pump Switch IR7000P only this switch controls the operation of the sample pump on portable models Sample Pump Connector IR7000P only a quick disconnect nylon fitting is mounted on the front panel of portable models for attaching t...

Page 16: ... detectors in the marketplace The optical bench is shown in Figure 2 1 It consists of Sample cell Detector IR source Filter cell Windows and seals The sample cell is a gold coated glass tube metal Tube Optional through which the sample gas flows At one end of the sample cell infrared energy is generated by a modulated IR source The modulation is achieved electronically by feeding the IR source a 4...

Page 17: ... Since this is the zero gas no differential absorption takes place At the rear of the sample cell an IR transparent window typically sapphire but may be some other material depending on the application allows the radiation to pass into the primary detector chamber Due to the heteroatomic nature of the gas contained within the chambers identical to the gas to be monitored IR absorption takes place ...

Page 18: ...ss is repeated and a span gas is introduced into the sample cell a slightly different condition exists Now IR absorption takes place within the sample cell Less energy is received at the detector But since the primary chamber is smaller than the secondary chamber and differential absorption takes place at predominately strongly absorbing wavelengths within the primary chamber the difference in ene...

Page 19: ...ly stored data and routines specific to the customer s application Depending on what options are installed 2 or more PCB s are used in the electronic subsystem Figure 2 2 shows the location of the boards in the portable model Other models are similar but mount the boards differently 2 3 1 Power Supply This unit is externally powered by either 120 or 230 VAC Fuses are located on the back panel for ...

Page 20: ...e main board Linearizer Scales and linearizes the signal using data and algorithms permanently stored in the microprocessor Filter De spikes pre filters and filters the signal again with a filter rate chosen by the operator The main board receives the raw signal from the detector and amplifies it In the analog circuit portion of the main board the signal is filtered to remove any electrical interf...

Page 21: ...on the process Large filter values yield a correspondingly lower instrument response but higher sensitivity The de spiking filter is a software routine used to clean up the signal Essentially it looks at the last 5 instrument readings and discards a reading if it varies significantly over the average A rolling average method of filtering is also applied through the software This filtering process ...

Page 22: ...n 5 Calibration for more information 2 3 4 Display The display contains the 2 line 16 character vacuum fluorescent display on the front panel Signals are transferred to and from the main board via a ribbon cable 2 3 5 I O Board The standard I O board is responsible for taking a analog signal from the main board and converting it to a 0 1 0 5 or 0 10 V analog output An optional 4 20 mA isolated cur...

Page 23: ...then the calibration gas should be at least 1500 ppm The balance of the span gas should be N2 If the instrument has a dual optical bench Model IR7000B or IR7000D the span gas must contain calibration values for both species being measured If an optional oxygen O2 sensor is installed the span gas must contain a calibration value for O2 If the 0 25 O2 sensor is installed use a calibration gas contai...

Page 24: ...ample or calibration gas is delivered under pressure to the analyzer by the customer or LSC supplied sample system The gas enters the analyzer and passes through a 0 3 micron disposable filter to remove any particulate matter If an O2 channel has been incorporated the O2 sensor is installed in series with the sample cell The gas passes first through the O2 sensor and then through the sample cell a...

Page 25: ...customer s sample system or throughout the system for a LSC supplied sample system A different filter and a filter housing is used NOTE Because these models are often supplied for custom applications please check the front of this manual for any included Addendum which will describe features notes and warnings that specifically apply to your instrument ...

Page 26: ...y damage or missing components Signs of damage would include dents scratches broken glass inside the casing etc Check that you have received the power cord or battery charger for the portable model Contact the shipper immediately to report shipping damage Contact the factory for missing parts 3 3 Mounting the Analyzer The ir7000 series of analyzers are designed to be used indoors and in a general ...

Page 27: ...ple take off is located some distance from the analyzer it may be useful to install a bypass loop with a needle valve and flow meter just before the inlet to the analyzer This loop can be used to shunt a portion of the sample back to the source to decrease the lag time of the system by increasing the total flow through the sample system Whatever sample system is employed use a regulator to limit t...

Page 28: ... sample systems can be provided by LSC Contact the factory for additional information The sample system must be capable of maintaining a constant pressure If a pump is used to pull sample calibration gas through the system rather than delivering the sample under pressure then care must be taken not to induce pressure variations during the measurements or calibrations WARNING Do not allow the sampl...

Page 29: ...then sample gas to check the flow rates If you are using a bypass loop do not set the sample or calibration regulators above 5 psig in an effort to increase the flow 3 6 Electrical Connections All electrical connections to the analyzer are made on the rear panel Figure 3 5 shows the rear panel for the IR7000 analyzer Other models are similar Electrical connections to be made at the rear panel are ...

Page 30: ...DC but can be changed to 0 5V or 0 10V full scale by moving the slides on the switch labeled S1 on the I O board The switch is located at the upper edge of the I O board as shown in Figure 3 6 Use the table in the figure to set the slides for the desired output voltage A 4 20 mA isolated or non isolated output is also available as an option A second set of 0 1 0 5 or 0 10 VDC output terminals may ...

Page 31: ...ion 4 3 The MODE Menu For example if the analyzer is currently set on range 2 which has been defined as 0 100 ppm CO2 and the MODE is set to LINEAR then the output would be PPM CO2 SIGNAL OUTPUT Voltage V OPTIONAL 4 20 MA OUTPUT CURRENT MA 0 0 4 10 0 1 5 6 20 0 2 7 2 30 0 3 8 8 40 0 4 10 4 50 0 5 12 0 60 0 6 13 6 70 0 7 15 2 80 0 8 16 8 90 0 9 18 4 100 1 0 20 0 I O BOARD SWITCH POSITIONS FOR VOLTA...

Page 32: ...Installation 3 IR7000 24 Teledyne Analytical Instruments Rev 3 Figure 3 6 Location of Slide Switch S1 on I O Board ...

Page 33: ...le system If not installed by the factory the customer is responsible for obtaining and installing the valves into the sample system Refer to Figures 3 1 and 3 2 for suggested placement The solenoid valves are driven by isolated triacs The triacs can handle a maximum rated load of 0 6 A at instrument voltage The factory recommends using 2 3 way valves to control the sample and calibration gas flow...

Page 34: ...ves in the sample system A similar valve layout as shown in Figure 3 1 and 3 2 can be used for deploying 2 3 way valves for controlling calibration and sample gases Alternatively one can used 3 2 way valves with a valve on each line sample zero and span See also the application shown in Figure 3 3 Connections from the solenoid valves are made to the rear panel on the control unit 3 6 4 Optional Re...

Page 35: ...alibration Each output is the collector and emitter of a phototransistor The customer must provide a voltage to each collector and a resistor to limit the current 100 mA maximum per device The outputs can switch 100 mA at 25 V See the Option Board Schematic in the Reference Section of this manual The digital inputs supplied by the customer are used to drive LED s The customer must supply a voltage...

Page 36: ...Fault 24 Fault Output Table 3 2 Digital I O Connector Pin Out CHART RANGE BIT 0 BIT 1 1 Off Off 2 On Off 3 Off On 4 On On Table 3 3 Range ID Logic Table Installation involves Fabricate the I O cable with mating connector Mate cable and connector to the rear panel Connectoppositeend s ofcabletotheinputandoutputdevices 3 6 6 RS 232 Cable An optional serial port is available for communication to and ...

Page 37: ...ppendix Figure 3 7 RS 232 Pin Assignment 3 6 7 Power Connections The IR7000 is shipped configured for 120 or 230 VAC operation After all other electrical and gas connections have been made connect the AC power to the power entry module on the rear panel The analyzer can now be powered up for testing gas connections solenoid operation and internal functions through the power on self diagnostic test...

Page 38: ...nstallation 3 IR7000 30 Teledyne Analytical Instruments Rev 3 can be configured for operation using the SETUP and MODE buttons on the front panel Refer to Section 4 for entering SETUP and MODE parameters ...

Page 39: ...The SETUP Menu Once the analyzer has been installed gas lines connected and electrical connections made the IR7000 can be configured for your application Refer to Section 3 for installation procedures Configuring the instrument involves Entering span gas concentration s Activating automatic calibration function and frequency Setting chart recorder or output ranges Entering alarm set points Selecti...

Page 40: ...for your application follow the steps outlined below CAUTION Make sure that the power cord is attached and the instrument is properly grounded Make sure that there are no leaks in the sample system Ensure that the inlet pressure of the sample gas is less than 5 psig and stable Figure 4 1 SETUP and MODE Menus SETUP MODE Cal Gas Calibrate Full Auto Chart Range 1 4 Filter Alarm L Calibration Hold Tra...

Page 41: ... Finally the analysis screen will appear with a display as shown in Figure 4 3 and the example screen on the left The analysis screen indicates The gas of interest CO2 in the example screen An initial reading ignore this for the present time R 1 analog range range 1 for this example LINEAR indicating that the indicated gas concentration has been linearized before being displayed f 100 indicating t...

Page 42: ...ration of O2 span gas Enter the Span Gas Concentration Use the UP and DOWN arrows on the front panel while holding in the SETUP button to change the actual concentration of your span gas The value on the lower right of the screen will change as you press either arrow Note that after 10 units up or down the longer you hold in an arrow the faster the value changes Stop when you are close to the corr...

Page 43: ...PPM change in a sample containing 1000 PPM This is fixed by the design of the detector and is independent of the range setting The 4 user definable ranges are implemented mainly to accommodate standard output devices such as chart recorders The full output 0 1V 0 5V or 0 10V or optionally 4 20mA will be linearly scaled over the defined chart range Enter Range 1 Use the UP and DOWN arrows on the fr...

Page 44: ...eflected on the bottom line of the display Save changes Again after releasing the SETUP button you will be prompted to save or else lose any setpoint changes you made There is a 60 second timer on this screen Press the UP button to save your changes or the DOWN button to discard the changes within the 60 second time limit A confirmation screen will then appear Enter the high alarm setpoint Go to t...

Page 45: ...nges or the DOWN button to discard the changes within the 60 second time limit A confirmation screen will then appear To determine the optimum delay time initiate a manual span calibration see Section 5 Calibration and while watching the display note the time it takes to reach a stable span calibration reading Add 10 to this reading and use this value for the CAL DELAY NOTE In models with dual opt...

Page 46: ...lue Use the UP and DOWN arrows on the front panel while holding in the SETUP button to enter the actual concentration of your span gas The value on the lower right of the screen will change as you press either arrow Save changes Again after releasing the SETUP button you will be prompted to save or else lose any setpoint changes you made There is a 60 second timer on this screen Press the UP butto...

Page 47: ...utomatic calibration The MODE submenus are displayed and their functions are set in the same manner as the SETUP features were hold in the MODE button and use the UP and DOWN button to select the appropriate value or selection Releasing the MODE button and pressing it again brings you to the next submenu Figure 4 1 shows the MODE submenus in the order in which they will appear on screen 1 CALIBRAT...

Page 48: ...mple 120 seconds Refer to Section 4 2 for setting the CAL DELAY period Then time the calibration while observing the display as it changes Note the time in seconds it takes for the concentration reading to stabilize Add 10 to this value and reenter it into the CAL DELAY submenu of the SETUP menu After the CAL DELAY period has elapsed the calibration begins Data is collected and averaged over 20 se...

Page 49: ... FIXED range by pressing the DOWN button Pressing the UP button will also place you in FIXED mode and will select the range indicated on the lower left in the display 3 FILTER The FILTER submenu allows the operator to choose the amount of filtering that is applied to the measurement There are 3 filter settings available 1 10 100 10 100 1000 for trace instruments The response time of the analyzer i...

Page 50: ... instrument is set to CAL HOLD there will be no change in display or output of the calibration value it will hold on the last measured value before the calibration command was given At the end of the calibration event there will be another delay in output equal to the CAL DELAY period while the gas concentration in the sample cell changes from pure calibration gas to actual sample gas If the calib...

Page 51: ...NDIR Gas Analyzer Operation 4 Teledyne Analytical Instruments Rev 3 43 Figure 4 3 Output Jump After New Calibration CAL HOLD Figure 4 4 Display Output Jump After New Calibration CAL TRACK ...

Page 52: ... the additional option of selecting either PPM or counts as the displayed units of measure Use the UP and DOWN arrows to select the desired units Releasing the MODE button will bring back the analysis screen which reflects your data mode choice and the units of measure See the example screens on the left 6 DISPLAY BRIGHTNESS The relative brightness of the vacuum fluorescent display is adjustable o...

Page 53: ...rument with the alarms defeated This function is implemented primarily for maintenance convenience If the application in which this instrument is to be used involves the monitoring and or control of a dangerous gas switching the alarm status to OFF can seriously impair the instrument to perform its function of warming or controlling a potentially hazardous situation 8 AUTO FULL ZERO Automatic cali...

Page 54: ... Two typical piping diagrams for the IR7000 are shown in Figure 5 1 The explosion proof models can use a similar sample system and can control up to 3 solenoid valves The sample system for the explosion proof models is housed separately in an explosion proof housing with the electronics and controls remotely located in the control section up to 300 feet away A specific application is shown in Figu...

Page 55: ...ng an appropriate CAL DELAY value configured into the instrument via the SETUP function See Section 4 2 SETUP Menu for procedures involved in setting the CAL DELAY With an appropriate CAL DELAY set make sure that the calibration source pressure is the same as the sample gas pressure and less than 5 psig NOTE The pressure in the sample cell during calibration must be the same as when flowing sample...

Page 56: ...time delay set in CAL DELAY This delay is used to allow sample gas to purge the sample cell of zero gas before the instrument resumes monitoring It is important to close the zero gas valve and open the sample gas valve during this delay to ensure sufficient purging has occurred before monitoring is resumed If a problem is encountered during calibration and the instrument cannot calibrate the data ...

Page 57: ...te to the CALIBRATE submenu and while holding in the button press the UP button to initiate an upscale UPS span calibration After the CAL DELAY period the instrument will go into calibration mode and the display will read DOING UPS CAL Calibration data will be collected for 20 seconds After the 20 second calibration close the span gas valve and open the sample gas valve to reinstate the sample gas...

Page 58: ... at least once prior to using the AUTO CALIBRATION feature for the first time This is to establish an appropriate CAL DELAY period The default value for CAL DELAY is known to be invalid for many applications It in all likelihood is not the optimum value for your setup You must run a MANUAL CALIBRATION to determine the proper delay period See Section 4 2 for instructions in determining the optimum ...

Page 59: ...een calibrations maybe different than the specified value in CAL TIME 5 5 Calibration Issues Pressure or flow variation The detection process inherent in the patented dual chamber balance detector essentially involves a counting of the molecules of the gas of interest within the sample cell Any pressure or flow variation changes the instantaneous number of gas molecules in the fixed volume cell an...

Page 60: ...se to it although there may be some spread about 0 If the number of pairs that are increasing are seriously out of balance with the number that are decreasing the software generates an error depending on the nature of the imbalance If the number of increasing values is much greater than the number of decreasing values the software will assume that the system is drifting It will immediately reset a...

Page 61: ... front panel 6 1 2 Particle Filter The sample path in some versions of the IR7000 is equipped with a disposable 0 3 micron particulate filter This filter is not meant to be the primary sample filtering device If the primary sample filter fails this filter may become clogged This will increase the backpressure inside the system and reduce the flowrate The filter should be checked periodically and r...

Page 62: ... identify the inlet and exit ends of the lines for proper reinstallation Remove the PVC tubing from the ends of the filter while the filter is still attached to the frame Loosen the holding clamp and remove the filter WARNING Depending on your application the filter may contain hazardous materials Adhere to all local state and federal regulations regarding the disposal of contaminated waste Insert...

Page 63: ...ptical bench intact NOTE Instruments with dual optical benches have 2 non interchangeable sample cells To avoid confusion service only one optical bench at a time To remove the optical bench 1 Turn off the sample gas flow WARNING Depending on the sample system used sample gas may be still flowing in the sample lines Make sure that the sample gas is turned off before beginning this procedure 2 Flus...

Page 64: ...g block on one end of the sample cell IR Source The IR source is the silver metal cylinder inserted into the source holder Detector The detector is the square block at the other end of the sample cell It normally carries a label reading Detector XXXX Where XXXX refers to the particular detector for that instrument only The detector cannot be interchanged with other instrument Optical Bench Mountin...

Page 65: ...ay Cable connects between the IR Source and the main board at J2 On instruments with dual benches note which main board is involved Twisted Pair Cable There are 2 twisted pair cables connecting between the optical bench mounting plate and the main board Disconnect the cables from the power supply board at J6 and J7 On instruments with dual benches note which main board is involved 8 Remove the 4 n...

Page 66: ...ce using a gentle pulling and twisting motion The cell is held in place with 2 O rings The O rings are held in pockets fabricated in the sample cell pressure plate They should not pull out when removing the sample cell During reassembly make sure that the O rings are not cut or damaged as the cell is inserted Make sure that the cell reseats firmly within the O rings Reassemble the optical bench by...

Page 67: ... done already disconnect the other end of this cable from the main board J2 On instruments with dual benches note which main board is involved With the IR source disconnected from the sample cell and the IR source holder free of the optical bench mounting plate the IR source can be removed by loosening the small plastic hex set screw in the holder Insert the new source into the IR source holder an...

Page 68: ...0 Reassemble the cover and reattach the probe With the instrument on check the display for a BATTERY LOW message If this appears charge the new battery for 1 hour before placing the instrument into service 6 2 5 Changing the Fuse If the instrument fails to power up and there is no display check that AC power is available and the instrument OFF ON switch is ON On the portable model make sure that t...

Page 69: ...lay Messages Various messages appear on the front panel display during operation There are 3 categories of messages Error Messages Normal Operation Messages Normal Operator Induced Messages The following sections describe the messages and where appropriate suggest corrective action ...

Page 70: ...or leaks IR LOW FLOW FAIL While a calibration was attempted the signal from the detector drifted in one direction Insufficient cell purge Increase CAL DELAY period for AUTOmatic calibrations or increase purge time for MANUAL calibrations NOTE The IR LOW FLOW FAIL message will occur only after the instrument has made 5 attempts 50 seconds each to capture a level value IR CAL SPAN FAIL A calibration...

Page 71: ...nt and contact LSC NO EPROM PRESENT Some portion of the permanent memory is not available to the microprocessor Turn the instrument off for 10 seconds then power back up If the message re occurs discontinue use of the instrument and contact LSC EXTERNAL RAM FAILURE Some portion of the addressable memory is failing initialization self test Turn the instrument off for 10 seconds then power back up I...

Page 72: ...ecalibration does not correct this error discontinue using the instrument and contact LSC IR OVER RANGE The measured value is more than 120 of the rated full scale of the instrument Recalibrate the instrument If recalibration does not correct this error discontinue using the instrument and contact LSC O2 UNDER RANGE The measured oxygen value is more than 1 of full scale negative Recalibrate the in...

Page 73: ...RATION The instrument is performing a full zero and span calibration which was initiated by the passing of the number of hours set in SETUP CAL TIME NEG DRIFT ZERO CALIBRATION An automatic zero calibration is in progress because the measurement was more than 2 of instrument span in a negative direction and automatic calibration is enabled DOING ZERO CALIBRATION A zero calibration is in progress DO...

Page 74: ...libration DOING MANUAL SPAN CALIBRATION A manual span calibration has been requested The instrument is currently performing the calibration ARE YOU SURE KEEP LOSE Prompts for saving information into one of the SETUP submenus Pressing the UP key will store the changed number Pressing the DOWN key or allowing the 60 second timer to expire will discard the changes and restore the previous value KEPT ...

Page 75: ...Screen from the SETUP menu It indicates the entered value for the concentration of the oxygen span gas Value can be changed using the UP and DOWN keys in the front panel MODE CALIBRATE Screen from the MODE menu It allows the user to initiate a manual calibration zero span or both MODE CHART X Screen from the MODE menu Allows the user to select an output range or enable the autorange feature MODE F...

Page 76: ...this menu will appear in the primary display left display This menu is not applicable to the portable model MODE ALARM ON OFF Screen from the MODE menu Allows the operator to toggle the audible alarm on or off If the alarm is sounding pressing either the UP or DOWN key will acknowledge the alarm and silence it ...

Page 77: ...0 60 Hz Portable model includes rechargeable battery and battery charger Max Power Consumption 110 VAC 2 amps 230 VAC 1 amp Power Consumption 50 Watts channel Sample Cell Glass Metal Optional gold buna n Lexan epoxy sapphire 304 stainless steel Sample Temperature 10 to 50 C 14 122 F Sample Flow Rack mounted 0 1 2 lpm 0 2 4 scfh Trace gas 5 0 10 lpm 10 20 scfh Portable 1 lpm 2 scfh internal sample ...

Page 78: ...152mm D Weight Rack mounted 38 lbs 17 2 kg Portable 19 lbs 8 6 kg Wall mounted 43 lbs 19 5 kg Resolution 0 1 of f s Trace 0 1 ppm 2 of f s for oxygen cell Repeatability 0 1 of f s Trace 0 5 of f s Noise 0 1 of f s Trace 0 5 of f s Drift 0 3 of f s determined on max range absolute for all other ranges Trace 1 0 of f s determined on max range Absolute for all other ranges Response Time T90 User sele...

Page 79: ... 5296 Fuse Note Orders for replacement parts should include the part number if available and the model and serial number of the instrument for which the parts are intended Orders should be sent to Teledyne Analytical Instruments 16830 Chestnut St City of Industry Ca 91748 Phones 626 961 9221 626 934 1500 Fax 626 961 2538 Email sales IR7000 com ...

Page 80: ...acter followed by a 3 character code This code defines what the subject of the message is Any data that is required by the message is inserted after the code and followed by the stop character In many messages the code is the complete message and will be followed by the stop character For example a typical message exchange would be FROM user TO IR7000 e1C is the start character e1C is the code req...

Page 81: ...ple From user eAE Back from instrument eAE enabled s type codes Messages containing s type codes cause the instrument to change a setpoint to the value sent with the code If a setpoint code is properly executed the return message will be the code as interpreted by the instrument These setpoints are normally changed through the buttons on the instrument s front panel To prevent a conflict between t...

Page 82: ...ollowed by the text string range_error inside the start stop characters c type codes Messages containing c type codes command a MODE change identical to those entered on the front panel using the MODE button If an unknown code is sent following the c the reply will be c If an illegal value is sent following a valid mode the reply will be the mode followed by not_match m type codes Messages contain...

Page 83: ...nstruments Rev 3 75 sent aGA returned aGA00002 Two alarms have been retrieved Example the code aEA instructs the instrument to Emit Alarm This code returns a 2 digit alarm number with 16 character message text sent aEA returned aEA1 5 ir_under_range ...

Page 84: ...ode linear or nonlin or counts PL Panel Locked locked or unlock RS chart Range Selected a or 1 or 2 or 3 or 4 RU chart Range in Use 1 or 2 or 3 or 4 TC Timed Cal type zero or full XG oXygen Cal good ok or no_zero or no_ups or no_both 1L 1st ir Low alarm setting number 1C 1st ir Cal gas value number 1G 1st ir cal Good ok or no_zero or no_ups or no_both 1I 1st ir displayed value number 1N 1st ir Nam...

Page 85: ...CD Cal Delay 1X 1st oXygen span cal setting A 3 3 Codes for c Type Messages The codes for c type messages are CODE MODE NAME VALUE PL Panel Lock 1 lock 0 unlock DB Display Brightness 0 thru 3 3 is brightest RS chart Range Selected 0 Autorange 1 thru 4 FS Filter Selected 0 filter 1 1 filter 10 2 filter 100 3 filter 1000 CT Cal Track hold 1 track 0 hold TC Timed Cal type 0 full 1 Zero only AE audibl...

Page 86: ...GE RETURN GM Gather Message of messages gathered EM Emit a Message one message returned DM Define Message message returns text A 3 5 Codes for a Type Messages The codes for a type messages are CODE MESSAGE RETURN GA Gather Alarm of alarms gathered EA Emit Alarm one of the alarms gathered DA Define Alarm with alarm returns alarm text ...

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