How to Calibrate a 4 Gas Monitor

A 4-gas monitor is a device that detects and alerts the user to any unsafe air quality environments. These devices typically have four sensors that detect carbon monoxide (CO), oxygen (O2), hydrogen sulfide (H2S) and combustible gases (EX). Depending on the specific work environment, these monitors may also be configured to include additional toxic and irritant chemicals.

The combustible sensor reads the lower explosive level (LEL) which is the concentration of gas or vapor in the air that can explode when exposed to an ignition source, typically expressed as a percentage. Some 4 gas detectors can also measure the upper explosive limit (UEL) which is the concentration of gas or

While the combustible and toxic sensors will last for quite some time, the H2S and CO sensors can fail at any time. These sensors are usually the most sensitive components within a monitor and can easily break if dropped or exposed to high heat or moisture.

4 Gas Monitor: Keeping Your Environment Safe from Harmful Gases

The best way to ensure the long-life and performance of your multi-gas monitor is to keep up with proper maintenance and calibration procedures. Calibration is a simple process that involves testing the monitor with known gas concentrations and adjusting its sensors accordingly. This is especially important in LIFE THREATENING and DANGEROUS applications where the safety of your workers is on the line. Bump test your monitor daily and perform periodic full calibrations to make sure your sensor readings remain accurate. Follow this link for more information on how to properly calibrate a 4 gas monitor.