Methane Detector CSM-3 is a stationary device for measuring methane content in explosion hazard areas in underground coal mines. Mainly it cooperates with telemetric central station CST-40(A) in transmission data area.
Pellistor methane concentration sensor CSM-3
Product Description
Product description
Methane Detector CSM-3 has two automatically switched measurement ranges to provide measurement in the range of 0-100% CH4 and two outputs (UW) to control equipment switching off power supply when the preset alarm thresholds have been exceeded and it has two two-stage inputs to control the status of contacts and lines of connected devices. Its autonomous power supply (battery) supplies the methane sensor system when the supply line is disconnected. 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 sensor displays the current value of methane concentration measurement.
Methane Detector CSM-3 is a device of M1 category and may thus be used in all underground mines with possible methane or coal dust explosion hazard.
Methane Detector CSM-3 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-3 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 |
Display: |
LCD |
Casing internal protection: |
IP-54 |
Explosion-proof mark: |
 I M1 Ex ia I |
Type test certificate: |
KDB 09 ATEX 094 |
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