Designed specifically for measuring oxygen in glove boxes from air (21% O2) down to low levels (0-10 ppm O2), this oxygen monitor range has easy installation options that ensure the best fit with the glove box operators needs. The analyzer or remote sensors can be connected directly on the glove box using a KF-40 flange. In the remote version the oxygen sensor can be placed in the glove box using our sample/calibration module.

Features of Oxygen Monitors for Glove Boxes and Nitrogen Generators

  • Measurement ranges from 0-10ppm up to 0-25% O2
  • Accuracy of better than 2% of range
  • 24 months sensor life span (in normal use)
  • 4-20 mA output
  • 18-24V loop powered
  • XLT sensor options for CO2 backgrounds

GPR-1500 GB GPR-2500 GB
Measurement range 0-10, 0-100, 0-1000 ppm, 0-1%,
0-25% (calibration only)
0-1%, 0-5%, 0-10%, 0-25%
Accuracy < 2% of selected range at constant conditions
Response time T90 < 10 seconds
Recovery time 60 seconds in air to < 10 ppm in < 1 hour on N2 purge Not applicable
Sensitivity (LDL) 0.05 ppb 0.005 %
Linearity < 1% of scale
Sensor model GPR-12-333-M
XLT-12-333-M for gases containing > 0.5% CO2
XLT-11-24-4 for gases containing > 0.5% CO2
Sensor life at 25ºC (77°F) and 1 atm 24 months in < 1000 ppm O26 months in air GPR-11-32-4 32 months in air
XLT-11-24-4 24 months in air
Calibration interval 30 days
Inlet pressure Nominally atmospheric
Flow through system: 0.34-2 barg (5-30 psig) with atmospheric vent
Flow rate Ambient monitoring or Flow through system 0.5-1 Nl/min (1-2 SCFH)
Gas connections KF 40 flange or 1/8” compression tube fittings (with flow through housing)
Wetted parts GPR-1500 GB Stainless steel GPR-2500 GB Delrin
Display Graphical LCD 7 x 3.5cm (2.75 x 1.375"); resolution 0.001
Enclosure Painted aluminum, 7.6 x 10.1 x 5.1cm (3 x4 x2")
Weight 900g (2lbs)
Compensation Temperature
Signal output 4-20mA (loop current)
Alarms None
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 18-24 V DC two wire loop
Area classification General purpose

GPR-1500 GB & GPR-2500 GB

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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.