GPR-3100 Oxygen Purity Analyzer
Proprietary advanced galvanic sensor capable of continuous oxygen analysis above 99.5% and from 0.05% to 100% with 24 months expected life in 100% oxygen. Barometric pressure compensated. Automated range, zero, calibration and system diagnostic functions. General purpose panel mount configuration with optional bezel for 19” rack mounting.
Ranges - Standard:  0-100%, and,
                                 Suppressed ranges of 50-100%, 80-100%, 90-100%

GPR-3100 W Oxygen Purity Analyzer
Proprietary advanced galvanic sensor capable of continuous oxygen analysis above 99.5% and from 0.05% to 100% with 24 months expected life in 100% oxygen. Barometric pressure compensated. Automated range, zero, calibration and system diagnostic functions. General purpose wall mount configuration. 
Ranges - Standard:  0-100%, and,
                                 Suppressed ranges of 50-100%, 80-100%, 90-100%

GPR-2500 MO Oxygen Purity Transmitter
Two wire loop powered 4-20mA signal output operates on 12-28VDC. Proprietary advanced galvanic sensor capable of continuous oxygen analysis above 99.5% and from 0.05% to 100% with 24 months expected life in 100% oxygen. Barometric pressure compensated. Automated range, zero, calibration and system diagnostic functions. General purpose wall mount configuration.  Suitable for use in Class 1, Division 1, Groups A-D hazardous areas with optional factory specified intrinsic safety barriers. Optional panel mounted flow meter
 Ranges - Standard:  0-100

GPR-2500 AMO Oxygen Purity Transmitter
Operates on 9-28VDC with 4-20mA signal output and two (2) field configurable alarms with relay contacts. Proprietary advanced galvanic sensor capable of continuous oxygen analysis above 99.5% and from 0.05% to 100% with 24 months expected life in 100% oxygen. Barometric pressure compensated. Automated range, zero, calibration and system diagnostic functions. General purpose wall mount configuration. Optional panel mounted flow meter.
Ranges - Standard:  0-100%

GPR-35 MO Portable Oxygen Purity Analyzer
Proprietary advanced galvanic sensor capable of continuous oxygen analysis above 99.5% and from 0.05% to 100% with 24 months expected life in 100% oxygen. Barometric pressure compensated. Operates on rechargeable battery for 8-12 hours after an overnight charge. Dual low, low alarms with LED indicators. General purpose NEMA 4 configuration. Optional panel mounted flow meter.
Ranges - Standard:  0-100%