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Percent Oxygen Analyzer

Operation  4

4-15

Teledyne Analytical Instruments

4.6

The 

Range Function

The Range function allows the operator to program up to three concen-

tration ranges to correlate with the DC analog outputs. If no custom ranges
are defined by the user, the instrument defaults to:

Low  = 0–1.00 %
Med  = 0–5.00 %
High  = 0–10.00 %.

The Model 3000PA is set at the factory to default to autoranging. In this

mode, the microprocessor automatically responds to concentration changes
by switching ranges for optimum readout sensitivity. If  the current range
limits are exceeded, the instrument will automatically shift to the next higher
range. If the concentration falls slightly below full scale of the next lower
range, the instrument will switch to that range. A corresponding shift in the
DC percent-of-range output, and in the range ID outputs, will be noticed.

The autoranging feature can be overridden so that analog output stays

on a fixed range regardless of the oxygen concentration detected. If the
concentration exceeds the upper limit of the range, the DC output will
saturate at 1 V dc.

However, the digital readout and the RS-232 output of the concentra-

tion are unaffected by the fixed range. They continue to read accurately with
full precision. See Front Panel description in Chapter 1.

4.6.1 Setting the Analog Output Ranges

To set the ranges, enter the range function mode by pressing the

Range

 button on the front panel.

L—1.00   M—5.00

H—10.00    Mode—AUTO

Use the < > arrow keys to blink the range to be set: low (

L

), medium

(

M

), or high (

H

).

Use the 

∆∇

 arrow keys to enter the upper value of the range (all ranges

begin at 0 %). Repeat for each range you want to set. Press 

Enter

 to accept

the values and return to 

Analyze

 mode. (See note below.)

Note: The ranges must be increasing from low to high. For example,

if range 1 is set as 0–1 % and range 2 is set as 0–10 %, range 3
cannot be set as 0–5 % since it is lower than range 2.

Summary of Contents for 3000PA-EU

Page 1: ...UIRED WHEN SERVICING THIS SYSTEM HAZARDOUS VOLTAGES EXIST ON CERTAIN COMPONENTS INTERNALLY WHICH MAY PER SIST FOR A TIME EVEN AFTER THE POWER IS TURNED OFF AND DISCONNECTED ONLY AUTHORIZED PERSONNEL S...

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Page 5: ...dimensions shape or weight of any parts in so far as such alterations do not adversely affect our warranty ImportantNotice This instrument provides measurement readings to its user and serves as a to...

Page 6: ..._ includesthefollowingoptions 3000PA C Inadditiontoallstandardfeatures thismodelalsohas separateportsforzeroandspangases andbuilt in controlvalves Theinternalvalvesareentirelyunderthe controlofthe3000...

Page 7: ...o do so may compromise the safe operation of the equipment CAUTION Risk of Electric Shock COMBUSTIBLE GAS USAGE WARNING DANGER This is a general purpose instrument designed for usage in a nonhazardous...

Page 8: ...ns 2 3 2 2 4 The Effect of Pressure 2 4 2 2 5 Calibration Characteristics 2 4 2 2 6 Micro Fuel Cell Class 2 5 2 3 Sample System 2 6 2 4 Electronics and Signal Processing 2 8 3 Installation 3 1 Unpacki...

Page 9: ...16 4 6 3 Fixed Range Analysis 4 16 4 7 The Analyze Function 4 17 4 8 Signal Output 4 17 Maintenance 5 1 Routine Maintenance 5 1 5 2 Cell Replacement 5 1 5 2 1 Storing and Handling Replacement Cells 5...

Page 10: ...t 1 2 TypicalApplications A few typical applications of the Model 3000PA are Monitoring inert gas blanketing Air separation and liquefaction Chemicalreactionmonitoring Semiconductormanufacturing Petro...

Page 11: ...gnostic testing at startup and on demand with continuous power supply monitoring CE Compliance RS 232 serial digital port for use with a computer or other digital communication device Analog outputs f...

Page 12: ...mbination For example the C and V options are combined as Model 3000PA C V 1 5 Front Panel Operator Interface The standard 3000PA is housed in a rugged metal case with all con trols and displays acces...

Page 13: ...Display The meter display is a LED device that produces large bright 7 segment numbers that are legible in any lighting environment It produces a continuous readout from 0 100 It is accurate across a...

Page 14: ...he rear panel shown in Figure 1 2 contains the gas and electrical connectors for external inlets and outlets The Zero and Span gas connec tors and the Current signal outputs are optional and may not a...

Page 15: ...pment that instrument is being calibrated and readings are not monitoring sample Range ID Contacts Four separate dedicated range relay contacts Low Medium High Cal Network For future expansion Not imp...

Page 16: ...zer and accurately processes the sampled data The microprocessor controls all signal processing input output and display functions for the analyzer 2 2 Micro Fuel Cell Sensor 2 2 1 Principles of Opera...

Page 17: ...ctively sealed although one end is permeable to oxygen in the sample gas The other end of the cell is a contact plate consisting of two concentric foil rings The rings mate with spring loaded contacts...

Page 18: ...thode and anode are submerged in this common pool They each have a conductor connecting them to one of the external contact rings on the contact plate which is on the bottom of the cell 2 2 3 Electroc...

Page 19: ...the sample has not changed It is therefore important that the sample pressure at the fuel cell usually vent pressure remain constant betweencalibrations 2 2 5 Calibration Characteristics Given that th...

Page 20: ...e performance for any given sample conditions A few typical Micro Fuel Cells are listed below with their typical use and electrical specifications 2 2 6 1 Class A 3 Cell The class A 3 cell is for use...

Page 21: ...Cell The class B 1 cell is for use in applications where it is exposed to less than 0 1 of carbon dioxide and where a longer response time is accept able in order to have a longer cell life Nominal o...

Page 22: ...upplied with each instrument The sample or calibration gas flow through the system is monitored by a flow meter downstream from the cell Figure 2 4 shows the piping layout for the standardmodel Figure...

Page 23: ...pplied from a universal power supply module designed to be compatible with any international power source Figure 2 6 shows the location of the power supply and the main electronic PC boards Figure 2 6...

Page 24: ...essing electronics including the microprocessor analog to digital and digital to analog converters are located on the motherboard at the bottom of the case The preamplifier board is mounted on top of...

Page 25: ...he cell output due to the same temperature changes The result is a signal that is temperature independent The output from the second stage amplifier is sent to an 18 bit analog to digital converter co...

Page 26: ...shipping agent 3 2 Mounting the Analyzer The Model 3000PA is for indoor use in a general purpose area It is NOT for use in hazardous environments of any type The standard model is designed for flush p...

Page 27: ...button in the center of the latch upper right corner is pressed all the way in with a narrow gauge tool less than 0 18 inch wide such as a small hex wrench or screwdriver Allow clearance for the door...

Page 28: ...or high pressure 5 to 50 psig applica tions use the restrictor that has a blue sticker on the body For pressurized service use the restrictor without the blue dot and union from the restrictor kit and...

Page 29: ...stall a bypass in the sampling system upstream of the analyzer input Note If the unit is for vacuum serice the above numbers apply instead to the vacuum at the EXHAUST OUT connector de scribed below w...

Page 30: ...ord receptacle accepts US or European size fuses A jumper replaces the fuse in whichever fuse receptacle is not used Fuses are not installed at the factory Be sure to install the proper fuse as part o...

Page 31: ...relay contacts Each set of three pins provides one set of Form C relay contacts Each relay has both normally open and normally closed contact connections The contact connections are shown in Table 3 2...

Page 32: ...or remote control of calibration See Remote Calibration Protocol below See Table 3 3 for pin connections Zero Floating input 5 to 24 V input across the and pins puts the analyzer into the Zero mode Ei...

Page 33: ...s release it If the command is continued until after the zero or span is complete the calibration will repeat and the Cal Relay Contact CRC will closeagain Forexample 1 Test the CRC When the CRC is op...

Page 34: ...his printing this port is not yet functional It is to be used for future options to the instrument Pins 13 and 29 Remote Valve Connections The 3000PA is a single chassis instru ment which has no Remot...

Page 35: ...It requires a standard 9 pin D connector The data is status information in digital form updated every two seconds Status is reported in the following order The concentration in percent The range in u...

Page 36: ...ce it is expended or if the cell is exposed to air for too long the Micro Fuel Cell will need to be replaced The cell could also require replace ment if the instrument has been idle for too long When...

Page 37: ...3 Installation 3 Installation 3 Installation 3 Installation 3 Installation Model 3000PA 3 12 Teledyne Analytical Instruments...

Page 38: ...e analysis ranges Then choose autoranging or select a fixed range of analysis as required Set alarm setpoints and modes of alarm operation latching failsafe etc Before you configure your 3000PA these...

Page 39: ...he normal operating mode The analyzer monitors the oxygen content of the sample displays the percent of oxygen and warns of any alarm conditions System The system function consists of six subfunctions...

Page 40: ...utton names are printed in Oblique type 4 3 The System Function The subfuctions of the System function are described below Specific procedures for their use follow the descriptions Auto Cal Used to de...

Page 41: ...one After a unique password is assigned to defeat the security the password must be changed back to TBEAI Logout Logging out prevents an unauthorized tampering with analyzersettings More Select and en...

Page 42: ...et OFF to ON if a zero interval is entered A Span Every or Zero Every screen appears Span Every 0 d Start 0 h from now Use arrows to set an interval value then use arrows to move to the start time val...

Page 43: ...the arrow keys to scroll the blinking over to PSWD and press Enter to select the password function Either the default TBEAI password or AAAAA place holders for an existing password will appear on scre...

Page 44: ...sting pass word and move on If you chose Enter to change the password the password assignment screenappears T B E A I ENT To Proceed or A A A A A ENT To Proceed Enter the password using the arrow keys...

Page 45: ...ich alarm itis 0 0 Anlz A L 1 Note If you log off the system using the logout function in the system menu you will now be required to re enter the password to gain access to Span Zero Alarm and Range...

Page 46: ...Use the arrow keys to blink More then press Enter Version Self Test Cell Output A Use the arrow keys again to move the blinking to the Self Test function The screen will follow the running of the dia...

Page 47: ...n turning it back on Readjust the gas pressure into the analyzer until the flowrate as read on the analyzer s SLPM flowmeter settles between 0 5 and 2 4 SLPM ap proximately1 5scfh If you are using pas...

Page 48: ...to select whether the span calibration is to be performed automatically or manually Use the arrow keys to toggle between AUTO and MAN span settling Stop when AUTO appears blinking on the display Span...

Page 49: ...oprocessor samples the output at a predeterminedrate Itcalculatesthedifferencebetweensuccessivesamplings and displays this difference as Slope on the screen It takes several seconds forthefirstSlopeva...

Page 50: ...ou want the alarms to be set as Both high high and high high alarms or One high and one low alarm or Both low low and low low alarms 2 Are either or both of the alarms to be configured as failsafe In...

Page 51: ...his screen Value of the alarm setpoint AL 1 oxygen Out of range direction HI or LO Defeated Dft Y N Yes No Failsafe Fs Y N Yes No Latching Ltch Y N Yes No To define the setpoint use the arrow keys to...

Page 52: ...The autoranging feature can be overridden so that analog output stays on a fixed range regardless of the oxygen concentration detected If the concentration exceeds the upper limit of the range the DC...

Page 53: ...EN drop back down into the special 25 cal range Once the oxygen concentration drops back down into your highest range setting the analyzer will automatically switch back to that range CAUTION While th...

Page 54: ...ton in many cases also switches the analyzer back to the Ana lyze function Alternatively you can press the Analyze button at any time to return to analyzing your sample 4 8 Signal Output The standard...

Page 55: ...oncentration it is necessary to know what range the instrument is currently on especially when the analyzer is in the autorangingmode To provide an indication of the range a second pair of analog outp...

Page 56: ...Percent Oxygen Analyzer Operation 4 4 19 Teledyne Analytical Instruments...

Page 57: ...4 Operation 4 Operation 4 Operation 4 Operation 4 Operation Model 3000PA 4 20 Teledyne Analytical Instruments...

Page 58: ...s replaced The spent fuel cell should be discarded according to local regulations This section describes fuel cell care as well as when and how to replace it 5 2 1 Storing and Handling Replacement Cel...

Page 59: ...000PA analysis readings drift downward uncharacteristically try recalibration If recalibration raises the readings temporarily suspect the cell but first check for leaks downstream from the cell where...

Page 60: ...xisting cell 1 Remove power to the instrument by unplugging the power cord at the power source 2 Open the front panel door by pressing the release button on the top right corner of the door all the wa...

Page 61: ...5 Maintenance 5 Maintenance 5 Maintenance 5 Maintenance 5 Maintenance Model 3000P 5 4 Teledyne Analytical Instruments Figure 5 1 Removing or Installing a Micro Fuel Cell...

Page 62: ...fic Model Information and note any Addendum that might be attached to the front of this manual for special information applying to the Cell in your instrument The warranty period for spare cells begin...

Page 63: ...merican and European fuses remove the single retaining screw flip Fuse Block over 180 degrees and replace screw 3 Replace fuse as shown in Figure 5 3 4 Reassemble Housing as shown in Figure 5 2 Americ...

Page 64: ...ther internal components are accessed by removing the rear panel and sliding out the entire chassis See Figure 5 4 below The gas piping is illustrated in Figure 2 4 and the major electronic components...

Page 65: ...ning If instrument is unmounted at time of cleaning disconnect the instru ment from the power source Close and latch the front panel access door Clean outside surfaces with a soft cloth dampened sligh...

Page 66: ...ace the sensor Possible Cause Atmospheric Oxygen may be diffusing in through the vent and affecting the oxygen level which the sensor sees Solution Increase flow rate and or length or vent tubing in o...

Page 67: ...5 Maintenance 5 Maintenance 5 Maintenance 5 Maintenance 5 Maintenance Model 3000P 5 10 Teledyne Analytical Instruments...

Page 68: ...Block Nylon 90 Response Time 10 seconds at 25 C 77 F Ranges Threeuserdefinablerangesfrom0 1 to 0 100 plus air calibration range of 0 25 Alarms One system failure alarm contact to detect powerfailure T...

Page 69: ...of full scale over operating temperature range on factory default analysis ranges once thermal equilibrium has been reached Analog outputs 0 1 V dcpercent of range Standard 0 1 V dc range ID Standard...

Page 70: ...1 C6689 B1 Micro FuelCell foroptionssee 1 A68729 Restrictor Kit __________________ Order B or C not both Check Specific Model Information for cell in your instrument NOTE Orders for replacement parts...

Page 71: ...Appendix Appendix Appendix Appendix Model 3000PA Teledyne Analytical Instruments Figure A 1 Single and Dual 19 Rack Mounts A 3 Drawing List D 66317 FinalAssembly OutlineDrawing A 4 19 inch Relay Rack...

Page 72: ...s resultinginhigherO2reading andshortercelllife Tousea3000 seriesanalyzeratacellpressureotherthanatmospheric theanalyzermustbe calibratedwithaknowncalibrationgasatthenewcellpressuretoadjustforthe diff...

Page 73: ...st be included in the samplelinepriortotherestrictor a60micronfilterisrecommended 3000PAEXAMPLES Example1 withaincoming pressureof10psigthestdrestrictor blue dot willprovideaflowrateof 76SLPM Up strea...

Page 74: ...CE Operationwithoutarestrictordeviceisnotrecommendasmentioned above A3000PA withoutanyflowrestrictordevicewastestedon11 19 97 This results in a flow rate of 2 4 SLPM 1 PSIG This is a cv of 0 023 for t...

Page 75: ...rrow keys to toggle between AUTO and MAN zero settling Stop when AUTO appears blinking on the display Zero Settling AUTO ENT To Begin Press Enter to begin zeroing Zero Slope ppm s The beginning zero l...

Page 76: ...hange as Slope a value in parts per million per second ppm s Zero Slope ppm s NOTE It takes several seconds for the true Slope value to display Wait about 10 seconds Then wait until Slope is sufficien...

Page 77: ...A 10 Appendix Appendix Appendix Appendix Appendix Model 3000PA Teledyne Analytical Instruments...

Page 78: ...vironmental Health and Safety Extension 230 Date Prepared 04 26 95 Section I Product Identification Section III Physical Chemical Characteristics Section II Hazardous Ingredients Composition Material...

Page 79: ...us Polymerization Will not occur Conditions to Avoid Routes of Entry Inhalation Highly unlikely Ingestion May be fatal if swallowed Skin The electrolyte potassium hydroxide is corrosive skin contact m...

Page 80: ...inutes and remove all contaminated clothing Get medical attention immedi ately If ingested give large amounts of water and DO NOT INDUCE VOMITING Obtain medical attention immedi ately If inhaled remov...

Page 81: ...Information RQ Hazardous Waste Solid N O S Lead Class 9 NA3077 PG III Follow all Federal State and Local regulations Section X References Material Safety Data Sheets from J T Baker Chemical Aldrich Ma...

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