Analytical Industries Inc (AII) GPR-2000 ATEX Operating Manual

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: [phone], Fax: [phone], www.aii1.com, e-mail: [e-mail] 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: [phone], Fax: [phone], e-mail: [e-mail],

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

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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

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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

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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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