Gas Detectors Calibration
All gas detectors must be calibrated on a schedule. Of the two types of gas detectors, portables must be calibrated more frequently due to the regular changes in environment they experience. A typical calibration schedule for a fixed system may be quarterly, bi-annually or even annually with some of the more robust units. A typical calibration schedule for a portable gas detector is a daily bump test accompanied by a monthly calibration.
Fixed Gas Detectors
Fixed gas detectors provide continuous monitoring of dangerous gasses indoors. They can be mounted in a facility to detect one or more types of gasses. Gas detectors sense dangerous levels of gas and alert personnel to its presence.
A smoke detector is an electronic fire-protection device that automatically senses the presence of smoke, as a key indication of fire, and sounds a warning to building occupants.
Commercial and industrial smoke detectors issue a signal to a fire alarm control panel as part of a building’s central fire alarm system. By law all workplaces must have a smoke detection system.
Household smoke detectors, or smoke alarms, issue an audible and/or visual alarm locally from the detector itself. They can be battery-powered single units or several interlinked hardwired (mains-powered) devices backed up by batteries. The latter must be installed in all new buildings and after major refurbishments.