Pellistor methane concentration sensor CSM-1

Product Description

Product description

Methane Detector CSM-1 has two automatically switched measurement ranges to provide measurement in the range of 0-100%CH4 and one or two outputs (UW) to control equipment switching off power supply when the preset alarm thresholds have been exceeded. Optionally, it may also be equipped with ambient temperature sensor. Its autonomous supply system (battery) supplies the methane detector when the feeder line is switched off. The communication with the methane detector is carried out by means of digital transmission through the feeder-measurement line of the central station and through the type KR-2 calibrator. The calibrator communicates with the methane detector through a radio link. Methane Detector CSM-1 is a device in category M1 and, therefore, may be used in all underground mines with methane or coal dust explosion hazard.

Methane Detector CSM-1 is a microprocessor device and it independently performs measurement, control and transmission functions. Its main tasks include continuous measurement of methane content, checking the measured value against the preset alarm thresholds, control of the contacts of the switching-off device (electronic relays). The switching-off contacts operate under positive logic, that is, supply failure, wrong measurement or overrun of alarm threshold causes the contact to open.

When the methane detector CSM-1 is connected to the central telemetric station CST-40(A), the central station initiates a connection and exchanges information with the detector (serial number, condition of batteries, contacts, etc.). The methane detector accepts the operator’s orders concerning the control of the switching-off contact and the settings of alarm thresholds. During its normal operation, as requested by the central station, the methane detector sends measurement data and other information concerning its operation.

Technical data

Measurement range (type of measurement:	0-5% CH4 (catalytic) 5-100% CH4 (conductometric)
Measurement method :	continuous
Response time t₉₀:	≤ 5s
Casing internal protection:	IP-54
Explosion-proof mark:	I M1 Ex ia I
Type test certificate:	KDB 06 ATEX 428