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General Purpose

GPR-35 Ambient Oxygen Monitor

GPR-35 Ambient Oxygen Monitor

Features proprietary compensation for changes in barometric pressure that virtually eliminates the false alarms associated with competitive monitors. The enhanced stability of the GPR-35 makes it ideal for oxygen deficiency monitoring in ambient areas and confined spaces. When needed the most, battery back-up provides eight (8) hours of continuous use in full alarm mode. In addition to OSHA's 20.0%, 19.5% alarm set points this monitor offers additional standard features along with a variety of options that greatly enhance the usability of this device. Learn more ...

GPR-2500 S ATEX Ambient Safety Transmitter

GPR-2500 S Ambient Oxygen Monitor

Features an advanced galvanic oxygen sensor capable of precisely measuring oxygen concentrations ranging from from 0.05% to 100% over a 36 month operating life with no periodic maintenance, menu driven controls and two (2) wire loop power. Learn more ...


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Intrinsically Safe:


Intertek ISO 9001:2008 Certification Logo
INERIS CE ATEX Certification Logo ATEX Certified Analyzers and Transmitters
Certified to ATEX Directive 94/9/EC
Ex II 1 G Ex ia IIB T4 Tamb -20C to +50C
Ex II 2 G Ex d [ib] ib IIB T4 Tamb -20C to+50C
Examination Certificate: 08ATEX0036
ISO 9001:2008, Intertek Certificate No. 485

GPR-2500 S ATEX Ambient Safety Transmitter

GPR-2500 S ATEX Ambient Safety Transmitter

Features certification to ATEX Directive 94/9/EC with intrinsic safety barrier, an advanced galvanic oxygen sensor capable of precisely measuring oxygen concentrations ranging from from 0.05% to 100% over a 36 month operating life, menu driven controls, a stainless steel sample system, and, two (2) wire loop power. Learn more ...

GPR-2835 AIS ATEX Ambient Safety Analyzer

GPR-2835 AIS ATEX Ambient Safety Analyzer

Features certification to ATEX Directive 94/9/EC, an advanced galvanic trace ppm oxygen sensor capable of measuring oxygen concentrations ranging from from 0.05% to 100% over a 36 month operating life, menu driven controls, and, two (2) field selectable alarm set points. Learn more ...

GPR-2835 IS ATEX Ambient Safety Transmitter

GPR-2835 IS ATEX Ambient Safety Transmitter

Features certification to ATEX Directive 94/9/EC, an advanced galvanic trace ppm oxygen sensor capable of measuring oxygen concentrations ranging from from 0.05% to 100% over a 36 month operating life, menu driven controls, and, two (2) wire loop power. Learn more ...



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