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Single Gas Monitors

Single-gas monitors for H2S, CO, O2 and SO2 from RKI Instruments, Honeywell BW and MSA, including the BW Clip two-year disposable and the RKI 04 Series. Maintenance-free and rechargeable options are both listed.

In this category

102 products from RKI Instruments, BW Technologies / Honeywell Analytics, MSA, Industrial Scientific. Gases Detected: CO (24), H2S (16), O2 (15), SO2 (11), CO2 (9), LEL (6) and 8 more. Number of Gases: 1 (96), 2 (3). Sample Method: Diffusion (96), Pump (sample draw) (3). Battery: Li-Ion (18), Alkaline (16), Alkaline & Li-Ion (8), Rechargeable Li-Ion (2), Sealed (non-replaceable) (1). Sold individually (51).

Brands in this category: RKI Instruments (43) · BW Technologies / Honeywell Analytics (42) · MSA (15) · Industrial Scientific (2)

How to read a gas monitor specification

A gas monitor lists the gases it detects, the sensor type and the measuring range for each (for example 0 to 100% LEL for combustibles, 0 to 25% volume for oxygen, 0 to 100 ppm for H2S), its alarm set points, battery run time, and intrinsic safety approvals (UL or CSA Class I Division 1 marks). Calibration gas and bump-test schedules follow the manufacturer's manual.

Ratings and specifications on this page are shown as published by the manufacturer or the named standard and describe performance in that standard's test. They are not a recommendation for any task. The employer's hazard assessment decides what protective equipment a job needs. Verify details against the manufacturer's current documentation before you buy.

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