A gas detector that is still powered on is not necessarily a gas detector that still works. Sensors age silently. The display can look normal, the LED can blink on schedule, and the instrument can …
A gas detector is only as useful as the signal it delivers. The sensor can be perfect, but if the reading never reaches the control room, the PLC, or the fire and gas system in …
A gas detector on its own only measures. It senses a gas, shows a number, and maybe sounds a local alarm. A fire and gas system (F&G) is what turns that measurement into action: warning …
A combustible gas detector that reads 20% LEL in a clean area, or reads zero during a real leak, is a safety problem and an operational one. False alarms erode trust, and false lows can …
A flame detector that keeps dropping into fault is more than a nuisance. Every fault means that zone is partly or fully blind to a hydrocarbon fire, and every repeated fault teaches operators to ignore …
A gas detector doesn’t measure gas in a vacuum. It measures gas in a real plant, refinery, rooftop, or confined space, where the air is hot, cold, damp, dusty, or at a different altitude than …
A gas detector that cries wolf is a safety risk. When operators see alarms that never turn out to be real, they start to ignore them, silence them, or push the alarm setpoints higher. Eventually a …
Sensor drift is the gradual change in a sensor’s output over time when the gas concentration, or the measured condition, has not changed. In gas detection, it is one of the most common reasons an …
Troubleshooting gas detectors comes down to one question: is the instrument telling the truth? Most problems fall into a handful of categories: power, sensor health, calibration, sampling path, environment, and (for fixed systems) wiring. Work …
A gas detector that won’t zero, or fails span during calibration, is one of the most common problems in the field. It is also one of the most misdiagnosed. Technicians replace perfectly good sensors, and …