The GPR-1500 series of intrinsically safe trace oxygen analyzers are designed for use in the demanding environments of natural gas extraction, processing and transmission. Like all gas analysis products from AII, the oxygen monitors are simple to use as well as easy and cost-effective to maintain. The innovative liquid drain manifold available with the LD models protects and extends the oxygen sensor's life span in processes where liquids may be present in the sample gas.

Features of Oxygen Analyzers for Natural Gas

  • Four measurement ranges provided
  • LDL of 50 ppb
  • Measures in CO2 backgrounds with XLT sensor
  • Sensor life of up to 24 months
  • Simple, intuitive HMI
  • Optional Modbus
  • Range of sampling options available

GPR-1500 DK / GPR-1500-IS/AIS
Measurement range 0-10, 0-100, 0-1000 ppm, 0-1%
Accuracy < 2% of selected range at constant conditions
Response time T90 < 10 seconds
T90 < 2 minutes (for Liquid drain models)
Sensitivity (LDL) 0.05 ppm
Linearity <1% of scale
Sensor model XLT-12-333 or XLT-12-333-LD suitable for gases containing > 0.5% CO2
Optional: GPR-12-333 or GPR-12-333-LD
Sensor life 24 months in < 1,000 ppm O2 5°C (77°F) and 1 atm
Calibration interval 30 days
Inlet pressure 0.34 - 2 barg (5-30 psig) with atmospheric vent
Flow rate 0.5-1.0 l/m (1-2 SCFH)
Gas connections 1/8" compression tube fittings
1/4" compression tube fittings (for DK and LD models)
Wetted parts Stainless steel
Display Graphical LCD 7 x 3.5cm (2.75 x 1.375"); resolution 0.01
Enclosure UL: NEMA Type 3R
Compensation Temperature
Barometric pressure and temperature (AIS model only)
Signal output 4-20 mA Loop current
4-20 mA or 1-5V (AIS model only)
Communications Optional Modbus RTU (AIS 24 V version only)
Alarms 2 off user configurable alarms: Magnetic coil relays rated 3A @ 100 VAC (AIS model only)
Operating temperature XLT Sensor: -10° to 45°C (14°F to 113°F)
GPR sensor: 5°C to 45°C (41°F to 113°F)
Power 18-24 V DC 2-wire loop power
12-28 V DC or 110-220 VAC (AIS model only)
Approvals CULUS: Class I, Division 1, Groups C & D
Tamb -20° to +50°C

GPR-1500 Series

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CALL 909-392-6900
Analytical Industries Inc.
2855 Metropolitan Place,
Pomona, CA, 91767
What we do
Analytical Industries Inc manufactures high-quality electrochemical oxygen sensors and gas analyzers for industrial process control as well as breathing air for diving and medical treatment.