Multi-Gas Monitors

Multi-gas monitors typically feature datalogging capability, as well as audible and/or visual alarms that warn of IDLH or time-weighted average toxic gas concentrations, low oxygen levels, LEL conditions, or malfunction. These monitors may operate in passive (diffusive) mode, or in active mode, in which a pump module draws air across the sensors. Active mode speeds the response time on the meter, but care must be taken to avoid drawing particulates into the monitor. Active mode is used for remote sampling of a hazardous atmosphere: introduce the extendable wand.

Calibration gases are available from Geotech. Ensure that the calibration gas is intended for the meter make and model you are using. This is important for multi-gas use because some gases in the mixture can adversely affect other sensors in the same meter.


Wireless 4-Gas Monitor

QRAE 3 Pumped and Diffusion
QRAE 3 Pumped QRAE 3 Diffusion

QRAE 3 is a wireless compact monitor for one to four gases.

The QRAE 3 provides detection and monitoring of Oxygen (O2), Combustibles, and toxic gases that include Hydrogen Sulfide (H2S), Carbon Monoxide (CO), Sulfur Dioxide (SO2) and Hydrogen Cyanide (HCN). QRAE 3 can deliver wireless real-time instrument readings and alarm status 24/7. This provides better incident visibility and can improve response time.

Call 1.800.833.7958

RAE QRAE 3 Specifications
RAE QRAE 3 User's Guide

Optional AutoRAE 2 Calibration Station
AutoRAE 2 Specifications
AutoRAE 2 System QuickStart
AutoRAE 2 Cradle QuickStart

Connect with ConneXt wireless

RKI GX-3R and GX-3R Pro

Personal Multi-Gas Monitors

RKI GX-3R and GX-3R Pro Multi-Gas Monitors

The RKI GX-3R and GX-3R Pro instruments are the world's smallest personal multi-gas monitors. Capable of simultaneously measuring LEL, O2, CO, and H2S - these instrument are wearable and ideal for worker safety applications. They feature newest generation micro sensor technology that include an LEL with dual filament silicone protection, an electrochemical O2 sensor with a 5 year life expectancy, and available combination H2S/CO sensor.

The RKI GX-3R Pro includes an additional 5th channel for infrared or toxic sensors.

Call 1.800.833.7958

RKI GX-3R & RKI GX-3R Pro Specifications
RKI GX-3R Operator's Manual
RKI GX-3R Pro Operator's Manual

Honeywell BW™ Clip4

Personal Multi-Gas Monitors

The Honeywell BW™ Clip4 is an economical four-gas detector that continuously measures H2S, CO, LEL, and O2. Designed for personal air monitoring, the Clip4 features two years of continuous runtime without charging. Once activated, rest assured that the Clip4 is on – ready to wear and ready to use. Choose from a signature black-housing or highly visible yellow housing.

Call 1.800.833.7958

Honeywell BW Clip4 Specifications
Honeywell BW Clip4 Operator Manual
Honeywell BW Clip4 Quick Start Guide


Wireless 4-Gas Monitor


The MicroRAE four-gas portable detector brings enhanced user friendliness and flexibility to wireless gas detection. This enables continuous, instant visibility of safety threats for faster, more informed decisions, to protect workers, facilities, and the environment, and to optimize operations.

Call 1.800.833.7958

RAE MicroRAE Specifications
RAE MicroRAE User's Guide
RAE MicroRAE QuickStart Guide

Optional AutoRAE 2 Calibration Station
AutoRAE 2 Specifications
AutoRAE 2 System QuickStart
AutoRAE 2 Cradle QuickStart

Connect with ConneXt wireless

RKI GX-2012 5-Gas Monitor

Personal Multi-Gas Monitors RKI GX-2012 5-Gas Monitor

With the GX-2012, you have multiple tools in one instrument. Having 3 operating modes, the GX-2012 can be used for confined space, safety monitoring in it's Normal Operating mode; for leak investigation in Leak Check mode; and for underground leak checking in Bar Hole mode. When equipped with an optional TC sensor, the GX-2012 can measure 100% volume methane and dynamically auto range from % LEL to % volume. This is ideal for line purge testing.

Call 1.800.833.7958

RKI GX-2012 Specifications
RKI GX-2012 Operator's Manual

Honeywell BW™ Ultra
Multi-Gas Detectors

Personal Multi-Gas MonitorsHoneywell BW Ultra Multi-Gas Detectors

The Honeywell BW™ Ultra is a portable five-gas detector designed for monitoring confined spaces and personal gas protection. The instrument features a large LCD with intuitive icons, quick response sensor technology, and offers Bluetooth (BLE) connectivity to configure instrument parameters with a mobile device. Select from multiple gas sensor configurations including LEL, O2, H2S, CO, VOC plus more specific toxic sensors are available.

Call 1.800.833.7958

Honeywell BW Ultra Specifications
Honeywell BW Ultra User Manual
Honeywell BW Ultra Quick Reference Guide

Geotech has been selected
to be the exclusive representative
for the Gasmet DX4015
and GT5000 Terra Gas Analyzers
in Southern California,
Colorado, Wyoming
and Utah.

Gasmet™ DX4015

FTIR Gas Analyzer

Gasmet DX4015

The Gasmet DX4015 combines Fourier Transform Infrared Spectroscopy (FTIR) analysis technology, a temperature controlled sample cell, a built-in sample gas pump and signal processing electronics in a compact unit to provide reliable measurements with low detection limits and true multi-compound analysis capability. Multicomponent gas analyzer is designed for on-site measurements of both organic and inorganic compounds at low concentrations in ambient air.

Call 1.800.833.7958

More Information
Data Sheet

Gasmet™ GT5000 Terra

High Performance Multigas Analyzer

Gasmet GT5000 Terra

The GT5000 Terra represents a next-generation gas analyzer combining high technology with ease of use and true robustness. This analyzer is specifically designed for demanding and active field and on the go use. It is lightweight and compact meaning that it can be easily carried as a backpack to the field with minimum effort and allows simultaneous gas measurements while on the go.

Call 1.800.833.7958

More Information
Data Sheet
Calcmet Analysis Software

Honeywell BW™ Icon and Icon+ Multi-Gas DetectorsHoneywell BW Icon

The Icon and Icon+ are multigas detectors used for personal gas detection and offer the simplest way to prioritize worker safety. Icon is named for its display of simple icons for gas levels and device status. This means there are no live gas readings for workers to interpret. Instead, when there's a gas alarm, the bell icon on the display and instrument will illuminate, and an audible alarm will alert workers to quickly clear the area.

Call 1.800.833.7958

Honeywell BW Icon & Icon+ Specifications
Honeywell BW Icon & Icon+ User Manual
Honeywell BW Icon & Icon+ Quick Reference Guide

Honeywell BW Icon

Honeywell BW™ Max XT II
Multi-Gas DetectorsHoneywell BW™ Max XT II

The Honeywell BW™ Max XT II is an economical one to four-gas detector that can continuously measure H2S, CO, LEL, and O2. Designed for personal air monitoring and confined space entry, the Max XT II features a straightforward one-button operation and integrated sampling pump. User adjustable options enable the instrument to be customized to suite specific applications.

Call 1.800.833.7958

Honeywell BW MAX XT II Specifications
Honeywell BW MAX XT II User Manual
Honeywell BW MAX XT II Quick Reference Guide