控制模块
The 4802A is a single channel Combustible Gas Control Module that has been designed for use with our proven catalytic bead sensors. It is designed to monitor combustible gases and vapors within the lower explosive limit (LEL) and provide status indication and alarm outputs. Microprocessor-based electronics allow all options to be user selectable through the front panel interface (mode/select switch and digital display). A digital display indicates gas concentration, fault codes, calibration cues and setup options. Other features include: LED indications of status, as well as both open collector and relay outputs for fault, low alarm and high alarm.