Analytical Industries Inc (AII) GPR-1000, GPR-1100, GPR-2000, GPR-3500 Specifications
Portable Oxygen Analyzers from
0.1 ppm up to 100% oxygen
GPR-1000, GPR-1100, GPR-2000 & GPR-3500
Suitable for trace oxygen measurements from 0.1 ppm through to purity
applications at 100% oxygen, these rugged portable instruments share the
same advanced sensor technology as the online process oxygen analyzers
ensuring confidence in their reliability and accuracy.
The Analytical Instruments’ concept of using the same HMI and menu
structures for portable and online analyzers makes it extremely easy for
operators to use both types of instruments on their site without need for
extra training.
%
PPM
Highlights
• Rugged- made to last in field operation
• Easy to use
• Up to 30 days battery life (40 hours with pump)
• Measurement ranges from 0-10 ppm up to
0-100% O
• 24 to 32 months sensor life span (in normal use).
• Lightweight – 2.5Kgs
• Internal pump option
• 0-1V output
• XLT sensor options for CO2 backgrounds
2
Applications
Spot checking for:
• Oxygen and nitrogen generators
• Storage holds on marine vessels post
maintenance
• Oxygen in tankers during delivery
• Metal treatment processes
• Leak checking processes
• Double glazing manufacture
• Welding (under N2 or Ar purge)
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Sensor Technology
3
3
4
4
4
5
0
The sensors from AII have been designed to avoid potential
weaknesses common in typical galvanic cell design. Our
materials, construction and assembly methods have been
continuously refined over decades. Each sensor type has
been specifically engineered to provide the optimum
balance between performance and longevity for individual
applications. The result is confidence in the measurement
and low maintenance. In the absence of oxygen, the
sensor will produce zero output and the sensor is linear
up to 100%, therefore only a span calibration is required
in most cases (see graph).
Membrane
Electrolyte
0202020
0
0
2
2
-
0H
0H
i
-
0H
-
0H
-
0H
-
-
0H
-
0H
-
0H
-
0H
-
0H
Pb0 Pb0
-
0H
0H
0H
0H
0H
0H
02020
2
-
-
0H
-
0H
-
0H
-
-
0H
-
0H
-
0H
-
0H
0
2
0
2
2
-
0H
-
0H
-
0H
-
-
0H
-
0H
0H
-
0H
-
-
0H
-
-
0H
-
-
0H
-
0H
Layer
Cathode
Electrolyte
Anode
Sensor Construction
100
90
80
70
60
50
40
30
Oxygen Reading / Output
20.9%
20
15.2%
10
15.2%
0
0 10 20 30 40 50 60 70 80 90 100
60.6%
40.0%
40.3%
21.0%
100.2%
100.0%
60.3%
% Oxygen Concentration
Typical sensor output
The Analytical Industries’ XLT sensor
For applications with a background gas containing more than 0.5% CO2, the specially designed XLT sensor should be
selected. With most standard electrochemical sensors an alkaline electrolyte is used and this is neutralised over time
when exposed to acidic gases, such as CO2. To combat this, AII developed the XLT sensor with a special electrolyte
formula which has the added benefit of being able to operate in temperatures as low as -10°C.
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