Technical Specifications *
Accuracy: < 2% of FS range under constant conditions
Analysis Ranges:
0-1%, 0-5%, 0-10%, 0-25%, FS
Auto-ranging or manual lock on a single range
ATEX Certified for Hazardous Areas
Application:
Approvals: Certified for use hazardous areas - see lower right
Area Classification: Class I, Division 1, Groups C, D
Calibration:
Compensation: Temperature
Connections: 1/8" compression tube fittings
Controls:
Display: Graphical LCD 2.75 x 1.375”; resolution .001%
Enclosure: Painted aluminum, 4 x 9 x 3", 8 lbs.
Flow: Not flow sensitive; recommended flow rate 2 SCFH
LED Indicators: LOW BATT (72 hr. warning); CHARGE mode
Linearity: > .995 over all ranges
Pressure:
Power: Rechargeable battery, 60 day cycle, 8 hrs with pump
Response Time: 90% of final FS reading in 10 seconds
Sample System:
Sensitivity: < 0.5% of FS range
Sensor Model:
Sensor Life:
Signal Output: 0-1V FS
Temp. Range: 5º to 45ºC (GPR sensor), -10º to 45ºC (XLT sensor)
Warranty: 12 months analyzer; 12 months sensor
Wetted Parts: Stainless steel flow housing, tubing and fittings
Oxygen analysis in inert, helium, hydrogen, mixed
and acid (CO2) gas streams
Max interval—3 months. Air calibrate with clean
source of certified span gas, compressed, or ambient
(20.9% O2) air on 0-25% range.
Water resistant keypad; menu driven range selection,
calibration and system functions
Inlet - regulate to 5-30 psig to deliver 2 SCFH flow;
vent - atmospheric
None; optional integral sample pump and panel
mounted flow meter and/or coalescing filter
GPR-11-32-RTS for non-acid (CO2) gas streams
XLT-11-24-RTS for gas mixture with > 0.5% CO2
GPR-11-32-RTS 32 months in air at 25ºC and 1 atm
XLT-11-24-RTS 24 months in air at 25ºC and 1 atm
GPR-2000 ATEX
Portable O
Rechargeable Battery Powered
Optional Integral Pump
Advanced Sensor Technology
Sensor Life, Warranty and Performance is Unmatched
Excellent Compatibility in 0-100% CO
Extended Operating Temperature –10⁰C
Sensitivity 0.5% Full Scale
ATEX Certified - Directive 94/9/EC
Examination Cert: INERIS 10ATEX0020
II 2 G
Ex ib IIB T4
T
-20⁰C to +50⁰C
amb
Analyzer
2
2
0080
Optional Equipment
Carrying case with custom foam insert
Sample conditioning - contact factory
* Subject to change without notice.
2855 Metropolitan Place, Pomona, CA 91767 USA ♦ Tel: 909-392-6900, Fax: 909-392-3665, www.aii1.com, e-mail: info@aii1.com Rev 10/15
ISO 9001:2008 Certified
INTERTEK Certificate No. 485
Advanced Instruments Inc.
GPR-2000/2000P
Portable % Oxygen Analyzer
Owner’s Manual
Revised Aug 2013
2855 Metropolitan Place, Pomona, CA 91767 USA ♦ Tel: 909-392-6900, Fax: 909-392-3665, e-mail: info@aii1.com,
www.aii1.com
Contents
Section
Introduction
1
Quality Control Certification
2
Safety
3
Features & Specifications
4
Operation
5
Maintenance
6
Spare Parts
7
Troubleshooting
8
Warranty
9
Material Safety Data Sheets
10
Table of Contents
Advanced Instruments Inc.
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1. Introduction
Your new oxygen analyzer incorporates an advanced electrochemical sensor specific to oxygen along with stateof-the-art digital electronics designed to give you years of reliable precise oxygen measurements in a variety of
industrial oxygen applications. More importantly, it has been constructed as intrinsically safe in accordance with
ATEX Directives 94/9/CE for use in hazardous areas in zone 1 Group C and D when used in conjunction with the
recommended operating instructions in this manual . The analyzer meets the following area classification.
Analytical Industries, Inc.
dba Advanced Instruments Inc
2855 Metropolitan Place, Pomona, CA 91767 USA
GPR-2000/2000P
0080
Serial No.:
Year of Manufacture:
INERIS 10ATEX0020
II 2 G
Ex ib IIB T4
T
WARNING: POTENTIAL ELECTROSTATIC CHARGING HAZARD – SEE INSTRUCTIONS
The design also meets NEC intrinsic safety standards for use in Class 1, Division 1, Group C, D hazardous areas.
Please refer to Appendix A for information on making electrical connections that will maintain the desired level of
protection.
To obtain maximum performance from your new oxygen analyzer, please read and follow the guidelines provided
in this Owner’s Manual.
Every effort has been made to select the most reliable state of the art materials and components to design the
analyzer for superior performance and minimal cost of ownership. This analyzer was tested thoroughly by the
manufacturer prior to shipment for the best performance. However, all electronic devices do require service from
time to time. The warranty included herein plus a staff of trained professional technicians to quickl y serv ice your
analyzer is your assurance that we stand behind every analyzer sold.
The serial number of this analyzer may be found on the inside as well as on the outside wall of the analyzer
enclosure. You should note the serial number in the space provided and retains this Owner’s Manual as a
permanent record of your purchase, for future reference and for warranty considerations.
Serial Number: _______________________
Advanced Instruments Inc. appreciates your business and pledges to make every effort to maintain the highest
possible quality standards with respect to product design, manufacturing and servi c e.
-20⁰C to +45⁰C
amb
.
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2. Quality Control Certification
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3. General Safety & Installation
Safety
This section summarizes the basic precautions applicable to all analyzers. Additional precautions specific to
individual analyzer are contained in the following sections of this manual. To operate the analyzer safely and
obtain maximum performance follow the basic guidelines outlined i n this Owner’s Manua l .
Caution: This symbol is used throughout the Owner’s Manual and alert the user to recommended
safety and/or operating guidelines.
Danger: This symbol is used throughout the Owner’s Manual to identify sources of immediate
danger such as the presence of hazardous voltages.
Electrostatic Discharge Hazard: This symbol is used to caution the user to take all necessary steps
to avoid generating electrostatic discharge.
Retain Instructions: The safety precautions and operating instructions found i n the Owner’s Ma nual s houl d be
retained for future reference.
Heed Warnings and Follow Instructions: Follow all warnings on the analyzer, accessories (if any) and in this
Owner’s Manual. Observe all precautions and operating instructions. Failure to do so may result in personal injury
or damage to the analyzer.
Heat: Situate and store the analyzer away from sources of heat.
Liquid and Object Entry: The analyzer should not be immersed in any liquid. Care should be taken so that
liquids are not spilled into and objects do not fall into the analyzer.
Handling: Do not use force when using the connectors, switches and knobs. Before moving your analyzer, be
sure to disconnect the wiring/power cord and any cables connected to the output terminals located on the
analyzer.
Maintenance
Serviceability: Except for replacing the oxygen sensor, there are no parts inside the transmitter for the operator
to service.
Only trained personnel with the authorization of their supervisor should conduct mai nt e na nce.
Oxygen Sensor: DO NOT open the sensor. The sensor contains a corrosive liquid electrolyte that could be
harmful if touched or ingested, refer to the Material Safety Data Sheet contained i n the Owner’s Ma nua l
appendix. Avoid contact with any liquid or crystal type powder in or around the sensor or sensor housing, as
either could be a form of electrolyte. Leaking sensors should be disposed of in accordance with local regulations.
Troubleshooting: Consult the guidelines in Section 8 for advice on the common operating errors before
concluding that your transmitter is faulty. Do not attempt to service the transmitter beyond those means
described in this Owner’s Manual, Section 10.
Do not attempt to make repairs by yourself as this will void the warranty as per Section 9 and may result in
electrical shock, injury or damage. All other servicing should be referred to qualified service personnel.
Cleaning: The transmitter should be cleaned only as recommended by the manufacturer. Wipe off dust and dirt
from the outside of the unit with a soft damp cloth then dry immediately. Do not use solvents or chemicals.
Non-use Periods: Turn the power OFF when the analyzer is left unused for a long period of time.
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Installation
This analyzer has been constructed in compliance with the following EN directives
EN 60079-0 : 2009
EN 60079-11 : 2012
The analyzers must be used in accordance with the guidelines delineated in this instruction manual.
Gas Sample Stream: Ensure the gas stream composition of the application is consistent with the specifications
and if in doubt, review the application and consult the factory before initiating the installation.
Note: In natural gas applications such as extraction and transmission, a low voltage current is applied to the
pipeline itself to inhibit corrosion of the pipeline. As a result, electronic devices connected to the pipeline can be
affected unless they are adequately grounded.
Contaminant Gases: A gas scrubber and flow indicator with integral metering valve are required upstream of
the analyzer to remove any interfering gases such as oxides of sulfur and/or hydrogen sulfide that can interfere
with measurement and cause reduction in the expected life of the sensor. Consult factory for recommendations
concerning the proper selection and installation of components.
Expected Sensor Life: With reference to the published specification, the expected life of all oxygen sensors is
predicated on the basis of average oxygen concentration, sample temperature of 77°F/25°C and sample pressure
of 1 atmosphere in “normal” applications. Deviations from standard conditions will affect the life of the sensor. As
a rule of thumb sensor life is inversely proportional to changes in oxygen concentration, sample pressure and
temperature.
Accuracy & Calibration: Refer to section 5 Operation.
Operating Temperature: The sample must be sufficiently cooled before it enters the analyzer and any optional
components. A coiled 10 foot length of ¼” stainless steel tubing is sufficient to cool sample gases as high as
1,800 ºF to ambient temperature. The recommended operating temperature is below 35 ºC. However, the
analyzer may be operated at temperature up to 45 ºC on an intermittent basis but the user is expected to ac c ept
a reduction in expected sensor life –as a rule of thumb, for every degree ºC increase in temperature (above 25
ºC), the sensor life is reduced by approximately 2.5%.
Heat: Situate and store the analyzer away from direct sources of heat.
Liquid and Object Entry: The analyzer should not be immersed in any liquid. Care should be taken so that
liquids are not spilled into an d objects do not fall into the analyzer.
Handling: Do not use force when operating the swit c h es or any other mechanical components. Before moving
your analyzer be sure to disconnect the wiring/power cord and any cables connected to the output terminals of
the analyzer.
Sample Pressure and Flow
All electrochemical oxygen sensors respond to partial pressure changes in oxygen. The sensors are equally
capable of analyzing the oxygen content of a flowing sample gas stream or monitoring the oxygen concentration
in ambient air (such as a confined space in a control room or an open area around a landfill or b i o-pond). The
following is applicable to analyzers equipped with fuel cell type oxygen sensors.
Inlet Pressure: For the analyzers designed to measure oxygen in a flowing gas stream, the inlet sample
pressure must be regulated between 5-30 psig (for Model equipped with integral sample flow meter or H2S
scrubber only). Although the rating of the SS tubing and tube fittings/valves itself is considerably higher (more
than 100 psig), a sample pressure of 5-30 psig is recommended for ease of control of sample flow.
Caution: If the analyzer is equipped with an optional H2S scrubber, sample inlet pressure must not exceed 30
psig.
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Outlet Pressure: In applications where sample pressure is positive, the sample must be vented to
atmosphere or into a pipe at atmospheric pressure.
Flow rates of 1-5 SCFH (0.5-2 SLPM) cause no appreciable change in the oxygen reading. However, flow rates
above 5 SCFH may generate a slight backpressure on the sen so r resulting in erratic oxygen readings.
Caution: Do not place your finger over the vent (it pressurizes the sensor) to test the sample flow
indicator when gas is flowing to the sensor. Removing your finger (the restriction) generates a
vacuum on the sensor and may damage the sensor (voiding the sensor warranty).
Application Pressure - Positive: A flow indicator with integral metering valve positioned upstream
of the sensor is recommended for controlling the sample flow rate between 1-5 SCFH (0.5-2 SLPM). If a separate
flow control valve and a flow indicator is used, position flow control valve upstream of the sensor and position a
flow indicator downstream of the sensor. If necessary, a pressure regulator upstream of the flow control valve
should be used to regulate the inlet pressure between 5-30 psig.
Application Pressure - Atmospheric or Slightly Negative: The GPR-2000P is equipped
with integral sample pump. The pump is capable of pulling sample from atmosphere to a pressure down to 40
inches of water column. For analyzer without a sample pump, external sample pump may be deployed. However,
user must ensure that by using external pump, the intrinsic safety of the analyzer is not compromised.
Positioning of a Sampling Pump: For % oxygen measurements, an optional external sample
pump may be used upstream of the sensor to push the sample across the sensor and out to atmosphere.
Moisture & Particulates: Installation of a suitable coalescing or particulate filter is required to remove
condensation, moisture and/or particulates from the sample gas to prevent erroneous analysis readings and
damage to the sensor or to other optional components. Moisture and/or particulates do not necessarily damage
the sensor. However, collection of moisture/particulate on the sensing surface can block or inhibit the diffusion of
sample gas into the sensor resulting in a reduction of sensor signal output – and the appearance of a sensor
failure. Consult the factory for recommendations concerning the proper selection and installati on of opti ona l
components.
Mounting: The analyzer is approved for indoor as well as outdoor use. However, avoid using the analyzer in
an area where direct sun might heat up the analyzer beyond the recommended operating temperature range.
Gas Connections: The Inlet gas line requires 1/8” or ¼” stainless steel compression type tube fittings (or
a good quality plastic tubing attached to the sample inlet).
Power: The analyzer i s powered by an integr al lead-acid rechargeable battery. The analyzer will continue to
run for a minimum of 30-60 days after the battery is fully charged without the pump. If the pump is used, the
battery will continue to power the pump and the analyzer for up to 8 hours. The battery's optimal charge time is
24 hours.
WARRNING: THE ANALYZER BATTERY MUST BE CHARGED IN A SAFE AREA ONLY BY USING FACTORY
PROVIDED WALL PLUG-IN CHARGER.
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4. Features & Specifications
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5. Operation
Principle of Operation
The GPR-2000 series of portable oxygen analyzers incorporate a variety of % range advanced galvanic fuel cell
type oxygen sensors. The analyzer is configured in a general purpose enclosure and meets the intrinsic safety
ATEX Directive 94/9/EC for use in Zone 1 Groups C and D hazardous areas. The integral sampling pump (GPR2000P) also meets the intrinsic safety standards.
Advanced Galvanic Sensor Technology
All galvanic type sensors function on the same principle and are very specific to oxygen. They measure the partial
pressure of oxygen from l ow PPM to % levels in inert gases, gaseous hydrocarbons, helium, hydrogen, mixed
gases, acid gas stre am s and am bien t ai r. Oxygen, the fuel for this electrochemical transducer, diffusing into the
sensor and reacts chemically at the sensing electrode to produce an electrical current output proportional to the
oxygen concentration in the gas phase. The sensor’s signal output is linear and remains virtually constant over its
useful life. The sensor requires no maintenance and is easily and safely replaced at the end of its useful life.
Proprietary advancements in the design and chemistry add significant advantages to an extremely versatile
oxygen sensing technology. Sensors for low PPM analysis recover from air to low PPM levels in minutes, exhibit
longer life, extended operating temperature range of -18°C to 50°C, excellent compatibility with CO
acid gases (XL T series sensors only) and reliable quality giving them a significant advantage over the competition.
The expected life of our new generation of percentage range sensors now range to five and ten years with faster
response times and greater stability. Other significant developments involve the first galvanic oxygen sensor
capability of continuous oxygen purity measurements and expanding the operating temperature range from -40°C
to 50°C.
and other
2
Electronics
The signal generated by the sensor is processed by state of the art low power micro-processor based digital
circuitry. The first stage amplifies the signal. The second stage eliminates the low frequency noise. The third
stage employs a high frequency filter and compensates for signal output variations caused by ambient
temperature changes. The result is a very stable signal. Sample oxygen is analyzed very accurately. Response
time of 90% of full scale is less than 10 seconds (actual experience may vary due to the integrity of sample li n e
connections, dead volume and flow rate selected) on all ranges under ambient monitoring conditions. Sensitivity
is typically 0.5% of full scale low range. Oxygen readings may be recorded by an external device via the 0-1V
signal output jack.
Power is supplied by an integral rechargeable lead acid battery which provides enough power to operate the
analyzer continuously for approximately 60 days. An LED located on the front p a nel provides a blink i ng 72 hour
warning to recharge the battery. A 9VAC adapter (positive pole located on the inside of the female connector)
can be used to recharge the battery from a 110V or 220V convenience outlet. The analyzer is designed to be fully
operational during the 8-10 hour charging cycle which is indicated by a second continuously lit CHARGE LED.
Sample System
The GPR-2000 is supplied without any sampling system except for a gas inlet and vent line. Optional sample
system with a sample flow control valve, a coalescing filter and an integral sample pump is available. Consult
factory for any specific sample system requirements.
Span Calibration
Span Calibration involves adju st in g t h e an al y z er electronics gain to match with the sensor’s signal output at a
given oxygen standard. After span calibration, the analyzer output will reflect accurately the oxygen content in a
sample gas. The signal output may drift with changes in the ambient temperature. Maximum drift from calibration
temperature is approximately 0.11% of reading per °C. The frequency of calibration varies with the application
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conditions, the degree of accuracy required by the application and the Quality Assurance Protocol requirements of
the user. However, the interval between span calibrations should not exceed beyond three (3) months.
Note: Regardless of the oxygen concentration of the standard used, the span calibration process takes
approximately 10-15 minutes. However, the time required to bring the analyzer back on-line (within 10% of the
original reading) can vary. As a rule of thumb, the span gas concentration must be 50-80 of the full scale range
of analysis or one range above the range of interest. For example, when using the analyzer on a 1% range, the
span gas concentration must be below 0.5 to 0.8% or 5 to 8% (for calibrat i on on 0 -10% range). For most
applications, calibration with ambient air (20.9%) will be sufficient.
The interval between span calibrations should not exceed three (3) months.
Initiate the DEFAULT SPAN procedures before performing SPAN CALIBRATION. This procedure clears up previous
calibration data from the analyzer internal memory.
Air Calibration
The inherent linearity of the galvanic fuel cell type oxygen sensor enables the user to calibrate any analyzer with
ambient air (20.9% oxygen) and operate the analyzer within the stated accuracy spec on the lowest most
sensitive range available with the analyzer.
Gas Connections
The GPR-2000 has one Sample In and one Sample out port. Ensure that sample pressure to the analyzer is at
lower level to allow a sample flow of 1-2 SCFH. Higher sample pressure (with higher sample flow) may cause a
back pressure on the sensor causing possible erroneous readings. The Sample must be vented to atmosphere or
a vent pipe at atmospheric pressure.
Procedure
Locate the sample inlet and vent ports of the analyzer.
Regulate the sample pressure and flow as described in Pressure & Flow above.
Connect a tube to VENT (or leave it open to vent to atmosphere).
Connect the Sample gas to SAMPLE IN.
Set the flow rate to 2 SCFH (user pro v ided)
Power
Power is supplied by an integral rechargeable lead acid battery which provides enough power to operate the
analyzer continuously for approximately 45-60 days. An LED located on the front panel provides a blinking 72
hour warning to recharge the battery when the battery voltage drops below a pre-determined value. A 9 V AC/DC
adapter (with positive pole located on the inside of the female connector) can be used to recharge the battery
from a 110V or 220V convenience outlet. The battery will be fully charged within 8-10 hours. The analyzer is
designed to be fully operational during the 8-10 hour charging cycle. When the adapter is connected to the
analyzer, the battery charging process is indicated by a second continuously lit LED.
CAUTION: The battery must be charged in a safe area only. Do not leave the charger connected to
the analyzer for more than 24 hours.
Charging Battery
Locate a source of AC power to meet the area classification, plug in the 9 VDC c h argi ng adapter provided with
the analyzer to the outlet. Connect the jack at the other end to the mating receptacle identified as CHARGE on
the analyzer.
Note: Charge the battery with the 9 VDC adapter provided with the analyzer only. Failure to do so may void area
classification.
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Analog Signal Output
A separate receptacle is provided for signal output. The analyzer signal output is 0-1 V full scale
selected. The signal output must be connected to an external recording device in accordance with
local safety directives.
Connect the lead wires from the external recording device to the male phone plug supplied with the analyzer.
(Note: Connect the positive lead to the center terminal of the male phone plug.)
Insert the male phone plug into the integral female OUTPUT jack located on the side of the enclosure.
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Push or screw in the sensor in
the sensor housing
Installing the Oxygen Sensor
GPR-2000 Oxygen Analyzer is equipped with an integral oxygen sensor that has been tested and calibrated by the
manufacturer prior to shipment and is fully operational from the shipping container. Should it be necessary to
install a new oxygen sensor, follow the procedure described below.
Note: All analyzer must be calibrated once the installation has been completed and periodically thereafter as
described below.
Caution: DO NOT open/dissect the oxygen sensor. The sensor contains a corrosive liquid electrolyte that could
be harmful if touched or ingested, refer to the Material Safety Data Sheet in section 10. Avoid contact with any
liquid or crystal type powder in or around the sensor or sensor housing, as either could be a form of electrolyte.
Leaking sensors should be disposed of in accordance with local regulations.
Procedure
1. Do not remove sensor from its original package until the analyzer is ready to accept sensor installation.
2. Open analyzer enclosure by removing four screws.
3. Disconnect sensor cable from the sensor (if previously installed). Pull or unscrew the old sensor from its
housing.
4. Push or screw in the new sensor in the sensor housing. Connect the sensor cable to the sensor
5. Connect the sensor cable to the rear of the sensor
6. Check the oxygen reading; it should reach close to 20.0% (+7% -3%) indicating that the sensor has
proper signal output. At this time, you may perform air calibration.
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S10101.17
20.09%
Establishing Power to An a lyzer
The analyzer is fully operational from the shipping container with the oxygen sensor installed and calibrated at
the factory prior to shipment. Once installed, we recommend the user allow the analyzer to stabilize for 10-15
minutes before analyzing a sample gas.
Establish power to the analyzer electronics by pushing the
red ON/OFF key. The digital display responds
instantaneously. When power is applied, the analyzer
performs several diagnostic system status checks termed
“START-UP TEST” as illustrated below.
If equipped with an optional integral sampling pump, it is
operated by a separate toggle switch located on the front
of the analyzer.
Note: In the unlikely event, the LOW BATTERY warning
LED comes on when the analyzer is turned on – proceed
immediately to section 6 Maintenance Battery.
The analyzer is supplied with a 9 V AC/DC adapter for
recharging the batteries or operating the analyzer
continuously. The analyzer’s charging circuit accepts only
9 VDC from any standard AC 110V or 220V adapter (with
positive supply in the center of the female charging jack).
The electronic design enables the analyzer to remain fully
operable during the 8-10 hour charging cycle. However,
the analyzer must be charged in safe areas only.
Once the power to the electronics is established, the digital
display responds instantaneously. The analyzer performs
several diagnostic system status checks termed “START-UP
TEST” as illustrated below:
START-UP TEST
ELECTRONICS – PASS
BATTERY- PASS
TEMP SENSOR – PASS
BARO SENSOR – N/A
After self diagnostic tests, the analyzer turns itself into the sampling mode. And displays oxygen contents the
sensor is exposed to, the analysis range, and the ambient temperature.
AUTO SAMPLING
25% RANGE
76 F
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MAIN MENU
MAIN MENU
Menu Navigation
The four (4) pushbuttons located on the front of the transmitter control all of the micro-processor functions:
Blue ENTER (select)
Yellow UP ARROW
Yellow DOWN ARROW
Green MENU (escape)
Main Menu
To access the MAIN MENU, press the MENU (ESC) key and the following screen will appear.
SELECT RANGE
CALIBRATION
VIEW HISTORY
SYSTEM OPTIONS
This screen show various option available. You can use the UP and DOWN arrow key to move the cursor and
highlight the desired function. After moving the cursor to the desired functi on, you can pre ss EN TER to get to
that function.
Range Selection
The GPR-2000 analyzer is equipped with four (4) standard measuring ranges (see specification) and provides
users with a choice of sampling modes. By accessing the MAIN MENU, users may select either the AUTO
SAMPLING (ranging) or MANUAL SAMPLING (to lock on a single range) mode.
Auto/Manual Sampling
Access the MAIN MENU by pressing the MENU key.
Advance the reverse shade cursor using the ARROW keys to highlight SELECT RANGE and press ENTER
The display will show *AUTO and the actual range of analysis. Press the ENTER to select MANUAL RANGE and
advance the cursor to the desired RANGE and press ENTER.
The following display appears:
SELECT RANGE
CALIBRATION
VIEW HISTORY
SYSTEM OPTIONS
In the AUTO range, the display will shift to the next higher range when the oxygen reading exceeds 99.9% of the
upper limit of the current range. The display will shift to the next lower range when the oxygen reading drops to
85% of the upper limit of the next lower range. In MANUAL range, the analyzer will be locked on the selected
range. If the oxygen value goes above 110% of the upper limit of the MANUAL selected range, an OVER RANGE
warning will be displayed.
SELECT RANGE
*AUTO
25%
10%
5%
*1%
76 F
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1.2 %
OVERRANGE
MANUAL SAMPLING
76 F
Once the OVER RANGE warning appears the user must advance to the next higher range.
NOTE: With oxygen reading above 110% of the selected range, the analog signal output will increase but will
freeze at a maximum value of 1.2 V. After the oxygen reading falls below the full scale range, the voltage signal
will become normal.
1% RANGE
Calibration of Analyzer
The electrochemical oxygen sensors generate an electrical current that is linear or proportional to the oxygen
concentration in a sample gas. In the absence of oxygen the sensor exhibits an absolute zero, i.e., the sensor
does not generate a current output in the absence of oxygen. Given the properties of linearity and an abso lu te
zero, a single point cali br at io n i s po ssible.
The analyzer is equipped with “Zero Calibration” feature. However, as described below, zero calibration is
recommended only when the application (or user) demands optimum accuracy of below 5% of the most sensitive
or lowest range available on the analyzer. For example, if the user requires analysis of a sample gas below
0.05%, zero calibration may be required.
Span calibration, it is necessary to adjust the analyzer sensitivity for accurate measurements of oxygen by using a
standardized (certified) oxygen or by using ambient air (20.9%).
Zero Calibration
Zero calibration of a %O2 analyzer is not necessary. This may be required only when the analyzer is to be used
to measure oxygen less than 0.1% oxygen
The maximum zero offset correction is limited to a maximum of 10% of the lowest (most sensitive) range for
positive zero offset and 10% of the lowest range for negative zero offset.
Zero calibration should be carried out after the span calibration and once performed should not have to be
repeated with subsequent span calibrations. Normally, zero calibrations are performed when a new sensor is
installed or changes are made in the sample system connections. Allow the ZERO gas to flow through the
analyzer and wait until the signal has dropped to a low value and is stable.
1. Access the MAIN MENU by pressing the MENU key.
2. Advance the reverse shade cursor using the ARROW keys to highlight CALIBRATION.
3. Press the ENTER key to select the highlighted menu option.
The following displays appear:
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MAIN MENU
OUTPUT SIMULATE
SELECT RANGE
CALIBRATION
VIEW HISTORY
SYSTEM OPTIONS
>>>
4. Advance the reverse shade cursor using the ARROW keys to highlight ZERO CALIBRATE.
5. Press the ENTER key to select the highlighted menu option.
The following displays appear:
0.015 %
ZERO CALIBRATION
WAIT FOR STEADY RDG
ENTER TO CALIBRATE
MENU TO ABORT
CALIBRATION
SPAN CALIBRATE
ZERO CALIBRATE
DEFAULT SPAN
DEFAULT ZERO
OUTPUT SPAN
6. Wait until the analyzer reading stabilizes (depending on the history of the sensor, it may take a few minutes
to several hours) and then press the ENTER key to calibrate (or MENU key to abort).
7. If the offset is less than 50% of the lowest range, by pressing ENTER will pass the calibration and the
analyzer will return to the Sample mode. On the other hand, if the offset is above 50%, pressing ENTER will
fail calibration and the analyzer will return to Sample mode without completing the Zero calibration.
Both the Zero Calibrate and Span Calibrate functions result in the following displays:
PASSED
CALIBRATION
OR
FAILED
CALIBRATION
Default Zero
This feature will eliminate any previous zero calibration adjustment and display the actual signal output of the
sensor at a specified oxy g en concentration. This feature allows the user to ensure that the accumulative zero
offset never exceeds 50% of the lowest range limit. To perform Default Zero,
Access the MAIN MENU by pressing the MENU key.
1. Advance the reverse shade cursor using the ARROW keys to highlight CALIBRATION.
2. Press the ENTER key to select the highlighted menu option.
The following displays appear:
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MAIN MENU
OUTPUT SIMULATE
0.25%
MAIN MENU
OUTPUT SIMULATEPA
SELECT RANGE
CALIBRATION
VIEW HISTORY
SYSTEM OPTIONS
>>>
3. Advance the reverse shade cursor using the ARROW keys to highlight DEFAULT ZERO.
4. Press the ENTER key to select the highlighted menu option.
The following display appears and after 3 seconds the system returns to the SAMPLING mode:
FACTORY
DEFAULTS
SET
>>>
76 F
CALIBRATION
SPAN CALIBRATE
ZERO CALIBRATE
DEFAULT SPAN
DEFAULT ZERO
OUTPUT SPAN
AUTO SAMPLING
1% RANGE
Analog Output Adjustment-C alibrate Output Span
In rare instances the 0-1 V signal output may not agree with the reading displayed on the LCD. This feature
enables the user to adjust the 0-1 V signal output.
1. Access the MAIN MENU by pressing the MENU key.
2. Advance the reverse shade cursor using the ARROW keys to highlight CALIBRATION.
3. Press the ENTER and then advance the cursor to OUTPUT SPAN and press ENTER. The following displays
appear:
SELECT RANGE
CALIBRATION
VIEW HISTORY
SYSTEM OPTIONS
>>>
4. Press the ENTER key to select the highlighted menu option and the following display appears:
CALIBRATION
SPAN CALIBRATE
ZERO CALIBRATE
DEFAULT SPAN
DEFAULT ZERO
OUTPUT SPAN
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Advanced Instruments Inc.
OUTPUT SPAN
unscrew the sensor from the housing or
push air through the analyzer
1 V ADJUST
PRESS UP OR DOWN
TO ADJUST OUTPUT
ENTER/MENU TO SAVE
5. By pressing UP or DOWN arrow, the signal output will change. Keep pressing the Up or DOWN key until the
output is 1V. Note: To perform "Calibrate-Output Span", an external recording device must be
connected to the signal output port of the analyzer.
6. Press ENTER to SAVE the changes.
Span Calibration Procedure
Air Calibration
This procedure requires only a source of clean ambient air and removal of the sensor from its flow housing.
1. Access the interior of the analyzer by removing the 4 clamps securing the door of the analyzer.
Caution: Do not remove the gaskets from the enclosure. Failure to do so will void the NEMA rating.
2. Remove the sensor from the screw-in sensor housing or push the air through the analyzer SAMPLE IN thus
exposing the sensor to ambient air or alternatively, flow a certified span gas through the analyzer.
3. Advance the cursor on the MAIN MENU to CALIBRATE and press ENTER.
4. Advance the cursor to SPAN CALIBRATION and press ENTER
The following displays appear:
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Advanced Instruments Inc.
MAIN MENU
OUTPUT ZERO
GAS CONCENTRATION
20.01%
SELECT RANGE
CALIBRATION
VIEW HISTORY
SYSTEM OPTIONS
>>>
CALIBRATION
SPAN CALIBRATE
ZERO CALIBRATE
DEFAULT SPAN
DEFAULT ZERO
OUTPUT SPAN
20.09%
PRESS UP OR DOWN
TO CHANGE VALUE
ENTER TO SAVE
MENU TO RETURN
>>>
SPAN CALIBRATION
WAIT FOR STEADY RDG
ENTER TO CALIBRATE
MENU TO ABORT
1. By using the UP or DOWN arrow keys, enter the appropriate digit where the cursor is blinking
2. Press the ENTER key to advance the underline cursor right or press the MENU key to advance the underline
cursor left to reach to the desired digit of the gas value.
3. Repeat until the complete span value has been entered.
4. In the example above, a span value of 20.09% has been entered.
5. After the span value has been entered, the analyzer will prompt to press the ENTER key to accept SPAN
CALIBRATION or MENU to escape.
Caution: Allow the analyzer reading to stabilized before accepting calibration.
6. After successful calibration, the analyzer will display a message “Passed Calibration” and return to the
Sample mode.
NOTE: The analyzer is allowed to accept calibration when O2 reading is within the acceptable value. If the O2
reading is outside of this limit, by pressing ENTER to accept calibration will result in “Failed Calibration” and
return to the Sample mode without completing Span calibration. After pressing ENTER either of the following two
messages will be displayed and the analyzer will return to SAMPLE mode.
PASSED
CALIBRATION
OR
FAILED
CALIBRATION
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Advanced Instruments Inc.
MAIN MENU
OUTPUT SIMULATION
0.010 %
Default Span
The software will set the SPAN adjustment based on the average output of the oxygen at a specific oxygen
concentration and erase any previou s sp an calibration data. For example, with factory default settings, when a
span gas is introduced, the micro-processor will display oxygen reading within +
indicating that the sensor output is within the specified limits. This feature allows the user to check the sensor’s
signal output without removing it from the sensor housing.
1. Access the MAIN MENU by pressing the MENU key.
2. Advance the reverse shade cursor using the ARROW keys to highlight CALIBRATION.
3. Press the ENTER key to select the highlighted menu option.
The following display appears:
SELECT RANGE
CALIBRATION
VIEW HISTORY
SYSTEM OPTIONS
4. Advance the reverse shade cursor using the ARROW keys to highlight DEFAULT SPAN.
5. Press the ENTER key to select the highlighted menu option.
The following displays appear and after 3 seconds the system returns to the SAMPLING mode:
FACTORY
DEFAULTS
SET
>>>
76 F
30-50% of the span gas value,
CALIBRATION
SPAN CALIBRATE
ZERO CALIBRATE
DEFAULT SPAN
DEFAULT ZERO
OUTPUT SPAN
AUTO SAMPLING
1 % RANGE
Analog Output Check- Output Simulation
This feature allows the user to simulate the electronics and the signal output. A known current is added to the
analyzer electron i c s internally to generate equivalent analog signal output. This feature allows the user to check
all interconnections from the analyzer to the signal output recording device before installation of sensor thus
preventing the user to open the sensor bag before the analyzer installation is complete and satisfactory. To
simulate signal output
1. Access the MAIN MENU by pressing the MENU key.
2. Advance the reverse shade cursor using the ARROW keys to highlight CALIBRATION and then select OUTPUT
SIMULATE.
3. Press the ENTER key to select the highlighted menu option.
The following displays appear:
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Advanced Instruments Inc.
MAIN MENU
OUTPUT SIMULATEI
OUTPUT SIMULATION
UST
SELECT RANGE
CALIBRATION
VIEW HISTORY
SYSTEM OPTIONS
0% SPAN
0.00 V
PRESS UP OR DOWN TO ADJ
OUTPUT ENTER/MENU TO RETUR N
Pressing UP or DOWN key will increase or decrease the output by 5% of the full scale signal each time.
Check the output on the external recording device or voltmeter/ammeter. The output on the external
recording would be the % of the full scale signal selected, for example, 0% will represent 0.00 V, 25% value
will represent 0.25 V and 50% span value will represent 0.5 V of the 0-1 V full scale. After SIMULATION is
complete, press EN T ER/MENU key to return to SAMPLE mode.
Note: To perform "Calibrate-Output Simulation", an external recording device must be
connected to the signal output port of the analyzer.
>>>
CALIBRATION
SPAN CALIBRATE
ZERO CALIBRATE
DEFAULT SPAN
DEFAULT ZERO
OUTPUT SPAN
Sampling a Gas
GPR-2000 Oxygen Analyzer requires a positive pressure to flow the sample gas across the sensor to m easure the
oxygen concentration in a sample gas except with analyzer equipped with integral sample pump. If a positive
sample pressure is not availab le and the analyzer is not equipped with integral sample pump, install an external
sample pump to push the sample through the analyzer; see the option of using a sample pump as described
above.
Procedure
Following calibration, the analyzer will return to the SAMPLE mode.
1. Select the desired sampling mode - auto or manual – as des c r ibed above.
2. Use a suitable tubing to transport the sample gas to the analyzer
3. The main consideration is to eliminate any air leaks which can affect oxygen measurements.
4. For sample gases under positive pressure, the user must provide a means of controlling the inlet pressure
5. For sample gases under atmospheric or slightly negative pressure, an optional integral sampling pump or an
6. Assure the sample is adequately vented for optimum response and recovery – and safety.
7. Allow the oxygen reading to stabilize for approximately 2 minutes at eac h sam ple point.
between 5-30 psig.
external pump is necessary to push the sample through the sensor housing. Generally, when using a low
voltage DC pump, no pressure regulation or flow control device is involved. However, a flow meter upstream
of analyzer is recommended to ensure that the sample flow is adequate and steady.
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Advanced Instruments Inc.
View History
This feature allows the user to view the maximum, minimum and average O2 concentration, ma x im um a mbient
temperature, the number of days the sensor has been in service (at the time of installation and first calibration,
the user must enter YES to confirm "new sensor") and the number of days since the last calibration was done.
System Options
This features allows the user to
1. Set security ; password protected operation
2. Define ranges; choose a range between two ranges, for example, 2% full scale instead of 5% full scale.
3. Display signal below 0.00; negative signal, yes or no.
To enter password, from system option menu, select SECURITY, then enter four digit PASS CODE, numeral
numbers only and press ENTER. Then select AUTO LOCK option and enter the number of minutes after which
access to MENU options will be locked (access allowed only after entering the PASS CODE).
In the event the PASS CODE is lost, enter the factory default PASS CODE 2855 to access the MENU and then
renter the new PASS CODE.
Choosing the option to display negative number will allow the user to see the display below 0.00 but the output
will be locked at 0.00 VDC.
Standby
The analyzer has no special storage requirements.
The sensor should remain connected during storage periods.
Store the analyzer with the power OFF at a safe location and away from a direct heating source.
If storing for an extended period of time, protect the analy zer from dust, heat and moisture.
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Advanced Instruments Inc.
6. Maintenance
With exception of components related to optional equipment and charging the battery of portable analyzers,
cleaning the electrical contacts when replacing the sensor is the extent of the maintenance requirements of this
analyzer as there are no serviceable parts in the analyzer given the nature of the solid state electronics and
sensor.
Serviceability: Except for replacing the oxygen sensor, there are no parts inside the analyzer for the operator to
service. Only trained personnel with the authorization of their superv isor s hould conduct ma i ntenance.
Sensor Replacement
Periodically, the oxygen sensor will require replacement. The operating life is determined by a number of factors
that are influenced by the user and therefore difficult to predict. The Features & Specifications define the normal
operating conditions and expected life of the standard sensor utilized by the GPR-2000 Series analyzer. Expected
sensor life is inversely proportional to changes in oxygen concentration, pressure and temperature.
To install/replace a sensor, access the interior of the analyzer by removing the four screws securing the front
panel to the bottom of enclosure, remove the sensor cable from the rear of the sensor, pull out or unscrew the
old sensor from the sensor housing. Push or screw in the new sensor. Connect the sensor cable to the rear of the
sensor. Close the analyzer case.
Caution: DO NOT dissect the oxygen sensor. The sensor contains a corrosive liquid electrolyte that could be
harmful if touched or ingested, refer to the Material Safety Data Sheet contained in the Owner’s Ma nua l .
Charging Battery
Charging the battery requires a common 9VDC adapter (positive pole located inside the female connector)
supplied with the analyzer and a convenient outlet. The adapter supplied with the analyzer will accept 110V or
220V AC 50-60 Hz. Charge battery with the adapter provided with the analyzer only. The electronic design
enables the analyzer to remain fully operable during the 8-10 hour charging cycle.
Unless the analyzer is to be operated while charging, turn the analyzer OFF when charging the battery for the
shortest charging cycle.
Connect the 9 VDC adapter supplied with the analyzer to an 110V or 220V outlet.
Insert the male phone plug from the 9 VDC adapter into the integral female CHARGE jack located on the bottom
of the enclosure.
The analyzer is designed to operate in the charging mode, however, operating the analyzer in
hazardous or explosive atmospheres while charging the battery IS NOT recommended despite the
intrinsically safe design.
Service
A single charge is sufficient to operate the GPR-2000 analyzer continuously for a period of 60 days but 1 day
when operating the optional integral sampling pumps continuously.
Warning LED indicators
An LED indicator located on the front panel will light continuously dur ing the CHARGE cycle .
A second LED (LOW BAT T ER Y) indicator located on the front panel provides a blinking 72 hour warning when
battery voltage drops below a certain level. Operating the analyzer beyond this 72 hour may permanently
damage the battery.
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Advanced Instruments Inc.
Item No.
Description
GPR-11-32-RT
% Oxygen Sensor
XLT-11-24-RT
% Oxygen Sensor, for CO2 background gas
Item No.
Description
A-3666
Battery Assembly
MTR-1010
Meter Digital Panel LCD
A-1161-C3-B2
PCB Assembly Main / Display
PWRS-1002
Plug-in 9VDC 110V Battery Charger
PWRS-1003
Plug-in 9VDC 220V Battery Charger
7. Spare Parts
Recommended spare parts for the GPR-2000 Series Portable Oxygen Analyzer:
GPR-11-32-RTS
XLT-11-24-RTS
Other spare parts:
B-3652
A-2166-1
A-2166-5
% Oxygen Sensor, screw-in
% Oxygen Sensor, screw-in for CO2 background gas
Battery Assembly for analyzer with integral sample pump
Pump Assembly General Purpose
Pump Assembly Intrinsically safe
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Symptoms
Possible Cause
Recommended Actions
Slow recovery
At installation, defective
Replace sensor if recovery
High O2 reading
1) Air leak in sample system
Allow O2 reading to stabili ze before
High O2 reading
Flow rate exceeds limits
Correct pressure and flow rate
Response time slow
Air leak, dead legs, longer
Leak test sample system bringing
O2 reading doesn’t
Pressure and temperature of
Calibrate the analyzer (calibrate
8. Troubleshooting
Advanced Instruments Inc.
after installing or
replacing sensor with
zero gas
sensor
Air leak in sample system
connection(s)
Abnormality in zero gas
Sensor damaged in service electrolyte leak
Sensor nearing end of life
connection(s)
2) Abnormality in zero gas
unacceptable or O2 reading fails to
reach 10% of lowest range
Leak test the entire sample system:
Vary the flow rate, if the O2 reading
changes inversely with the change
in flow rate indicates an air leak correct source of leak
Qualify zero gas (usin g a secondary
analyzer)
Replace sensor
Replace sensor
making any calibration adjustment
Continue purge with zero gas
Leak test the entire sample system
(above)
Qualify zero gas (usin g a secondary
analyzer)
When sampling gas
agree with expected
O2 values
Pressurized sensor
Abnormality in sample gas
distance of sample line, low
flow rate, high volume of
optional filters and scrubbers
the sample may be different
than the span gas used for
calibration
Abnormality in the sample gas
25
Remove restriction on vent line
Use XLT sensor when CO
gases are present
Qualify sample gas independently
sample gas to analyzer, reduce
dead volume and/or inc r ease
sample flow rate
close to the pressure and
temperature of the sample gas)
Qualify sample gas independently
or acid
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Advanced Instruments Inc.
Erratic O2 reading or
Test sensor signal output
Remove sensor from housing.
24 hours charge, replace battery
No O2 reading
Fail span calibration
Analyzer does not
power up
independent from analyzer
Abrupt changes in sample
pressure
Defective sensor cable or bad
sensor cable connection
Leaking sensor
Liquid covering sensing area
Improper sensor selection
Presence of other interference
gases; presence of sulfur
gases
Unauthorized maintenance
Sensor nearing end of life
Defective sensor/Sensor
nearing end of life
Low battery
Consult factory for checking sensor
signal output in air.
Regulate sample gas pressure and
flow. Clean contacts with alcohol
(minimize exposure time of sensor
to ambient air to extent possible)
Replace sensor and return
damaged sensor to the factory for
warranty determinatio n
Check sensor cable connections
If electrolyte leakage from sensor
is evident, replac e sen so r an d
return leaking sensor to the factory
for warranty determination
Wipe sensor and sensor housing
and sensor with a damped towel.
Replace GPR/PSR series sensor
with XLT sensor when CO
acid gases are present, consult
factory
Replace sensor and install H2S
scrubber
Replace sensor, obtain authorized
service
Replace sensor
Replace sensor
Recharge battery for 24 hours, if
analyzer does not power up after
or other
2
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Advanced Instruments Inc.
9. Warranty
The design and manufacture of Advanced Instruments Inc. oxygen analyzers and oxygen sensors are performed
under a certified Quality Assurance System that conforms to established standards and incorporates state of the
art materials and components for superior performance and minimal cost of ownership. Prior to shipment every
analyzer is thoroughly tested by the manufacturer and documented in the form of a Quality Control Certification
that is included in the Owner’s Manual accompanying every analyzer. When opera ted and mainta ined i n
accordance with the Owner’s Manual, the units will provide many years of reliable service.
Coverage
Under normal operating conditions, the analyzers and sensors are warranted to be free of defects in materials
and workmanship for the period specified in accordance with the most recent published specifications, said period
begins with the date of shipment by the manufacturer. The manufacturer information and serial number of this
analyzer are located on the rear of the analyzer. Advanced Instruments Inc. reserves the right in its sole
discretion to invalidate this warranty if the serial number does not appear on the analyzer.
If your Advanced Instruments Inc. monitor, analyzer and/or oxygen sensor is determined to be defective with
respect to material and/or workmanship, we will repair it or, at our option, replace it at no charge to you. If we
choose to repair your purchase, we may use new or reconditioned replacement parts. If we choose to replace
your Advanced Instruments Inc. analyzer, we may replace it with a new or reconditioned one of the same or
upgraded design. This warranty applies to all monitors, analyzers and sensors purchased worldwide. It is the only
one we will give and it sets forth all our responsibilities.
There are no other express warranties. This warranty is limited to the first customer who submits a claim for a
given serial number and/or the above warranty period. Under no circumstances will the warranty extend to more
than one customer or beyond the warranty period.
Limitations
Advanced Instruments Inc. will not pay for: loss of time; inconvenience; loss of use of your Advanced
Instruments Inc. analyzer or property damage caused by your Advanced Instruments Inc. analyzer or its failure
to work; any special, incidental or consequential damages; or any damage resulting from alterations, misuse or
abuse; lack of proper maintenance; unauthorized repair or modification of the analyzer; affixing of any
attachment not provided with the analyzer or other failure to follow the Owner’s Manua l . Some states and
provinces do not allow limitations on how an implied warranty lasts or the exclusion of incidental or consequential
damages, these exclusions may not apply.
Exclusions
This warranty does not cover installation; defects resulting from accidents; damage while in transit to our service
location; damage resulting from alterations, misuse or abuse; lack of proper maintenance; unauthorized repair or
modification of the analyzer; affixing of any label or attachment not provided wi th the analyz e r; fire, flood , or a cts
of God; or other failure to follow the Owner’s Manual.
Service
Call Advanced Instruments Inc. at 909-392-6900 (or e-mail info@aii1.com) between 8:00am and 5:00pm Pacific
Time Monday thru Thursday or before 12:00 pm on Friday. Trained technicians will assist you in diagnosing the
problem and arrange to supply you with the required parts. You may obtain warranty service by returning you
analyzer, postage prepaid to:
Advanced Instruments Inc.
2855 Metropolitan Place
Pomona, Ca 91767 USA
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Advanced Instruments Inc.
Be sure to pack the analyzer securely. Include your name, address, telephone number, and a description of the
operating problem. After repairing or, at our option, replacing your Advanced Instruments Inc. analyzer, we will
ship it to you at no cost for parts and labor.
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Advanced Instruments Inc.
Product Identif ication
Product Name
Oxygen Sensor Series - PSR, GPR, AII, XLT
Synonyms
Electrochemical Sensor, Galvanic Fuel Cell
Manufacturer
Analytical Industries Inc., 2855 Metropolitan Place, Pomona, CA 91767 USA
Emergency Phone Number
909-392-6900
Preparation / Revision Date
January 1, 1995
Notes
Oxygen sensors are sealed, contain protective coverings and in normal conditions do not
present a health hazard. Information applies to electrolyte unless otherwise noted.
Specific Generic Ingredients
Carcinogens at levels > 0.1%
None
Others at levels > 1.0%
Potassium Hydroxide or Acetic Acid, Lead
CAS Number
Potassium Hydroxide = KOH 1310-58-3 or Acetic Acid = 64-19-7, Lead = Pb 7439-92-1
Chemical (Synonym) and
Family
Potassium Hydroxide (KOH) – Base or Acetic Acid (CH3CO2H) – Acid, Lead (Pb) – Metal
General Requirements
Use
Potassium Hydroxide or Acetic Acid - electrolyte, Lead - anode
Handling
Rubber or latex gloves, safety glasses
Storage
Indefinitely
Physical Propertie s
Boiling Point Range
KOH = 100 to 115° C or Acetic Acid = 100 to 117° C
Melting Point Range
KOH -10 to 0° C or Acetic Acid – NA, Lead 327° C
Freezing Point
KOH = -40 to -10° C or Acetic Acid = -40 to -10° C
Molecular Weight
KOH = 56 or Acetic Acid – NA, Lead = 207
Specific Gravity
KOH = 1.09 @ 20° C, Acetic Acid = 1.05 @ 20° C
Vapor Pressure
KOH = NA or Acetic Acid = 11.4 @ 20° C
Vapor Density
KOH – NA or Acetic Acid = 2.07
pH
KOH > 14 or Acetic Acid = 2-3
Solubility in H2O
Complete
% Volatiles by Volume
None
Evaporation Rate
Similar to water
Appearance and Odor
Aqueous solutions: KOH = Colorless, odorless or A cetic Acid = Colorless, vinegar-like
odor
Fire and Explosion Data
Flash and Fire Points
Not applicable
Flammable Limits
Not flammable
Extinguishing Method
Not applicable
Special Fire Fighting Procedures
Not applicable
Unusual Fire and Explosion
Hazards
Not applicable
Reactivity Data
Stability
Stable
Conditions Contributing to
Instability
None
Incompatibility
KOH = Avoid contact with strong acids or Acetic Acid = Avoid contact with strong bases
Hazardous Decomposition
Products
KOH = None or Acetic Acid = Emits toxic fumes when heated
Conditions to Avoid
KOH = None or Acetic Acid = Heat
Spill or Leak
Steps if material is released
Sensor is packaged in a sealed plastic bag, check the sensor inside for electrolyte
water. Flush or wipe all surfaces repeatedly with water or wet paper towel (fresh each
10. MSDS – Material Safety Data Sheet
leakage. If the sensor leaks inside the plastic bag or inside an analyzer sensor housing
do not remove it without rubber or latex gloves and safety glasses and a source of
29
Advanced Instruments Inc.
time).
Disposal
In accordance with federal, state and local regulations.
Health Hazard Inform ation
Primary Route(s) of Entry
Ingestion, eye and skin contact
Exposure Limits
Potassium Hydroxide - ACGIH TLV 2 mg/cubic meter or Acetic Acid - ACGIH TLV / OSHA
PEL 10 ppm (TWA), Lead - OSHA PEL .05 mg/cubic meter
Ingestion
Electrolyte could be harmful or fatal if swallowed. KOH = Oral LD50 (RAT) = 2433
mg/kg or Acetic Acid = Oral LD50 (RAT) = 6620 mg/kg
Eye
Electrolyte is corrosive and eye contact could r e sult in permanent loss of vision.
Skin
Electrolyte is corrosive and skin contact could result in a chemical burn.
Inhalation
Liquid inhalation is unlikely.
Symptoms
Eye contact - burning sensation. Skin contact - soa py slick feeling.
Medical Conditions Aggravated
None
Carcinogenic Reference Data
KOH and Acetic Acid = NTP Annual Report on Carcinogens - not listed; LARC
Monographs - not listed; OSHA - not listed
Other
Lead is listed as a chemical known to the State of California to cause birth defects or
other reproductive harm.
Special Protectio n
Ventilation Requirements
None
Eye
Safety glasses
Hand
Rubber or latex glove s
Respirator Type
Not applicable
Other Special Protection
None
Special Precautio ns
Precautions
Do not remove the sensor’s protective Teflon and PCB coverings. Do not
Empty sensor body may contain hazardous residue.
Transportation
Not applicable
probe the sensor with sharp objects. Wash hands thoroughly after handling.
Avoid contact with eyes, skin and clothing.
30
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