Gas Detection For Life

Leading gas detector manufacturer


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Toxic Gas Detection & LEL Detection Heads

M2A Series

Stand Alone Transmitter

M2A SeriesThe RKI M2A™ is a state-of-the-art transmitter that can operate as an independent, stand-alone monitor or as part of an integrated system. 

Direct digital readout with OLED display.

Available gases include: LEL, O2, H2S, CO, CO2, and 100% Vol CH4

Toxic gases includ:e NH3, SO2, HCN, and more



Diffusion Sensor/Transmitter

S-SeriesBasic 4-20 mA transmitters for the detection of common gas hazards.
LEL, H2 Specific LEL, Oxygen, H2S, CO, and for a variety of toxic gas detection.


H2 Specific

ISingle Point Stand Alone Monitor

H2 SpecificLEL or PPM detection ranges available.

A perfect low cost solution for hydrogen detection in battery rooms.

Direct Connect

LEL / H2 / O2 / CO / H2S Gas Sensors

Direct ConnectThe sensors can be mounted directly to the controllers as a complete stand alone system, or they can be mounted to explosion proof junction boxes for remote detection

Direct Connect Sensor

M Series

Low Cost H2S or CO Transmitter

M Series This CO/H2S transmitter is a highly reliable and very cost effective basic 4-20 mA transmitter for the detection of carbon monoxide and hydrogen sulfide.


Model 1017

Sample Draw LEL Sensor

Sample Draw LEL SensorLEL or PPM detection ranges available.

A perfect low cost solution for hydrogen detection in battery rooms.

Model 1017

Model 35-3001

Sample Draw Sensor / Transmitter

35-3001 Gas DetectorA compact sample draw detector assembly with a built-in pump that accepts a 24VDC input

Model 35-3001

Multi Point Detector

Wastewater or sewage applications

Tri-Sensor HeadLEL, LEL IR, O2, H2S, CO, are available

The tri-sensor head can be used either indoors or outdoors

Tri-Sensor Head

Drill Rig Monitors

H2S Monitoring for Drill Sites

Drill Rig MonitorThese monitors are specifically designed for detection of H2S around temporary drilling rigs. All units include our long-life plug in electrochemical H2S sensor, range 0-100 ppm.

RM Series


Diffusion sensor/transmitter for toxics

GD-K88AiToxic gas detector, NH3, AsH3, GCI3, CO, Cl2, ClO2, ClF3, G2H6, F2, HCl, HF, H2S, NO, NO2, O3, PH3, SiH4, SO2. Low profile design. Fast sensor response and stability



Multifunctional, Intelligent Sensor

Sample-draw transmitter GD-70Doffers an array of sensor technologies for toxic gas detection. Common platform, Universal main unit. Large size
LCD screen



Single Point Stand Alone Monitor

PS-2LEL or PPM detection ranges available.

A perfect low cost solution for hydrogen detection in battery rooms.

PS-2 Model


Infrared CO2 Gas Monitor

Non-dispersive infrared RI-215absorption sensor is used to provide direct measurements through diffusion or sample draw monitors.

RI-215 Series


Indoor Carbon Monoxide Monitor

Carbon Monoxide (CO) monitor with a range of 0-150 ppm.
EC-600 Model


Indoor Oxygen Monitor

Oxygen monitor with a 0-25% vol measuring range.
OX-600 Model

Air Aspirator Gas Monitor

Harsh Environment Sampling System

Air AspiratorSingle or dual sensor system is designed to monitor gas atmospheres from extreme conditions with either temperature, moisture, or pressure challenges. A powerful air aspirator can pull a sample from up to 100 feet away. The filtered and conditioned sample gas is then passed across one or two different detectors. Each detector shares a common calibration and compressed air inlet for aspirated flow. This system is fault tolerant removing the need for expensive downtime and maintenance. The sample is diluted with air after the gas sensor and then returned to a common exhaust reducing the danger of potential hazardous gases entering a safe work space.

Single / Dual Sensor Air Aspirator

Digester Gas Monitor

Harsh Environment Sampling System

Digester Gas MonitorGas from waste digesters contains high levels of methane, CO2, and H2S, with little to no oxygen present. The RKI gas monitor checks for all these gases on a cyclic basis. A powerful air aspirator pulls a sample from up to 100 feet away. Since digester gas contains high humidity and high H2S, both of which can cause damage to sampling systems, the RKI Digester Gas Monitor is designed to handle these with no damage to the sampling system or sensors. The sample is filtered through a series of dirt, dust, and moisture stopping filters, and these filters are automatically blown back and cleaned out with fresh air at the end of each cycle.

Digester Gas Monitor