Portable gas detectors are one of the most important tools you can have on any worksite. Whether you’re in grain storage, confined spaces, or around hazardous gases, these devices help protect workers from unseen dangers. But like any tool, they only work if you take care of them.

At KC Supply Co., we believe safety starts with readiness. A gas monitor that’s dirty, uncalibrated, or damaged isn’t just unreliable—it’s a liability. Here’s what every operator should know about proper gas detector maintenance to ensure long-lasting performance and accurate readings.

1. Perform Daily Bump Tests

A bump test is a quick check to make sure your gas detector responds to the presence of gas. This test doesn’t measure accuracy—it simply confirms that the monitor and sensors are working.

Before every shift or job, expose the unit to a known concentration of gas to make sure the alarms go off as expected. If it doesn’t respond correctly, don’t assume it will in a real emergency. The unit may need calibration or repair.

2. Calibrate Regularly

Calibration ensures your gas monitor is accurately reading gas levels. Over time, sensors can drift, and even the environment (like temperature or humidity) can affect readings.

Most manufacturers recommend calibration every 30 days, but frequency may depend on how often the unit is used and in what conditions. In high-use or extreme environments, consider calibrating more often. Always use certified calibration gas and follow manufacturer procedures.

3. Clean Units Properly

Dust, moisture, and grime are common in industrial settings. Unfortunately, these are also enemies of gas detector performance.

Clean your unit with a soft, damp cloth. Avoid using strong chemicals or solvents, which can damage sensor housings or plastic components. Never spray cleaners directly into the sensor ports. Make sure all ports, vents, and buttons are clear of debris that could block airflow or trigger a false alarm.

4. Check Batteries and Power

It might seem simple, but low battery power is one of the most common reasons gas detectors fail. Always start your day with a fully charged unit, especially if the job involves long hours or remote areas with no access to chargers.

If your detector uses replaceable batteries, make sure they’re in good condition and haven’t corroded. Rechargeable units should be docked when not in use.

5. Store Units Correctly

When your portable gas detector isn’t in use, store it in a clean, dry place—preferably in a case or cabinet designed for equipment storage. Avoid areas with extreme heat, cold, or humidity, which can degrade the sensors or the battery.

Also, be careful not to store detectors near gas cylinders or chemicals that could cause the sensors to become desensitized over time.

6. Replace Sensors When Needed

Every gas detector has a lifespan, and so do its sensors. If your unit frequently fails bump tests or calibration, or if it’s no longer responding reliably, it may be time to replace one or more sensors.

Keep track of sensor life and follow manufacturer recommendations for replacement intervals. This prevents surprise failures and keeps your team protected.

Final Thoughts

Your portable gas detection equipment is only as reliable as the maintenance behind it. At KC Supply Co., we encourage all businesses—whether in agriculture, grain handling, manufacturing, or utilities—to build a routine that includes bump tests, calibration, cleaning, and proper storage.

Need help selecting gas monitors? Reach out to our team. We’re here to help you protect your people and your operation, one smart step at a time.