Air Monitors and Gas Detectors require regular maintenance service.  These detectors typically use Electro-Chemical (EC) sensors, that are similar to a battery, in design and function. Electro-Chemical (EC) sensors have a typical shelf and working life of 1-4 years. Manufacturers usually place a date code on the sensor the indicates the year of manufacture.  Sensor replacement is based on the age and performance of a sensor, when tested with calibration gas.

Typical maintenance service includes: sensor replacement, filter replacement, pump cleaning, battery and sample tube replacement.  Safety Instruments provides a written estimate that itemizes all labor and parts required prior to performing any repairs.  As outlined in OSHA 1910.146(d)(4), the employer must provide equipment that is properly maintained.