NGM-1

Natural Gas Module Datasheet RS232 communication In addition to visual and audible communication the module allows to monitor the operation using RS232 terminals. Each 21 seconds the module transmits the measurements data. The RS232 communication channel also provides means to calibrate the sensor. Transmission parameters Baud rate 115200bps Parity 8N1 Description TECHNICAL PARAMETERS The Natural gas module is a battery operated detection device designed for detection of natural gas (methane) in concentrations below 100% LEL (4.4% CH4 in air). The sensor is not suitable for measuring propane and butane. The sensor is equipped with test button as well as an audible alarm option realized with embedded buzzer. The heart of the device is an MP-7227 MEMS pellistor sensor which allows for low power operation on standard AA type batteries. The module is equipped with visual (LED) and audible (buzzer) alarms to inform of potential gas leakage as well as transmit data related to actual state of the module and concentration of gas if the module is connected to external receiver working with serial RS232 standard. The estimated maintenance-free operation on 2xAA (2600mAh) batteries is 6 months. Detectable gases Maximum concentration Sensor sensitivity Sensor response time Zero drift Sensitivity drift Power supply Suggested batteries Operating current Transmission Weight Dimensions [w x l x h] methane 5% v/v. >10 mV/% CH4