High-Accuracy Oxygen Analyzers for Industrial Gas Monitoring

The high-accuracy oxygen analyzers from Analytical Industries are designed for monitoring gas in industrial processes where trace oxygen from low parts per million to pure O2 has to be exactly measured. With AII’s high-performance galvanic oxygen sensors, these modern instruments are user-friendly with a common, across-the-range chassis, HMI, and menu structure, thus an operator just needs to learn the operation of only one instrument for many gas analysis applications at a range of oxygen levels.

The high-accuracy oxygen analyzers are available as 19" rack-, bench-, panel-, and wall-mounted for easy installation.

  • Easy to use HMI
  • Four measurement ranges with manual or auto-ranging
  • High accuracy ( ±0.02 ppm in lowest range)
  • 24 month sensor life with regular usage
  • Sample in CO2 backgrounds with XLT sensor
  • Integrated bypass valve (for GPR-1600)
  • Two alarms
  • Bench, rack, or wall mounting options
  • Easy access and sensor replacement

Technical Specifications

  GPR-1600 GPR-2600 GPR-3100
Measurement range 0-10, 0-100, 0-1000 ppm, 0-1%
(0-25% calibration only)
0-1%, 0-5%, 0-10%, 0-25% 0-100%, plus suppressed zero ranges.
50, 80, or 90-100%
Accuracy < ±2% of range
±0.1% at constant conditions after calibration with 95-100% oxygen (GPR-3100)
Response time T90 < 10 seconds T90 < 13 seconds
Recovery Time 60 sec in air to < 10 ppm in < 1 hour on N2 purge Not applicable
Sensitivity (LDL) 50 ppb 50 ppm 0.1% oxygen
Linearity < 0.5% of scale
Sensor model GPR-12-333

XLT-11-24-4 for gas mixture with > 0.5% CO2

XLT-11-24-4 for gas mixture with > 0.5% CO2
Sensor life at 25°C and 1 atm 24 months in < 1000 ppm O2 GPR-11-32-4 32 months; XLT-11-24-4 24 months 24 months in 100% oxygen
Calibration interval Typically: 1-3 months
Inlet pressure 0.34 - 2 barg (5-30 psig) with atmospheric vent 248 bar g (3600 psig)
Flow rate 0.5 - 1.0 l/m (1-2 SCFH)
Gas connections 1/4" compression tube fittings
Display Graphical LCD 12.7 x 7 cm (5 x 2.75"); resolution 0.01
Enclosure Painted aluminum
See individual mounting options for dimensions
Compensation Barometric pressure and temperature;
Temperature controlled sample system and sensor (GPR-3100 only)
Analog output 4-20 mA isolated, 0-1V, and 0-5V
Range ID 1-5 V or 4-20 mA, optional relay contacts
Communications Choose from RS485, RS232 or USB
Alarms Two user-adjustable alarm relays
Operating temperature GPR sensor: 5 °C to 45 °C (41°F to 113 °F)
XLT sensor: -10 °C to 45 °C (14 °F to 113 °F)
Power Universal 100-240 V AC

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