Carbon dioxide concentration sensor CSCD-3i 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.
Carbon dioxide concentration sensor CSCD-3i
Product Description
Description of product
Carbon dioxide concentration sensor CSCD-3i provides a measurement range from 0 to 5% CO2. It has two (UW) outputs to control devices which cut-off energy supply when alarm thresholds are exceeded and 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 CSCD-3i sensor 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 carbon dioxide concentration measurement.
The CSCD-3i sensor is a device of M1 category and may thus be used in all underground mines with possible methane or coal dust explosion hazard.
Carbon dioxide concentration sensor CSCD-3i is a microprocessor device and it independently performs measurement, control and transmission functions. Its main tasks include continuous measurement of carbon dioxide 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 CSCD-3i sensor 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 sensor 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 carbon dioxide concentration sensor sends measurement data and other information concerning its operation.
During its normal operation, as requested by the central station, the carbon dioxide concentration sensor sends measurement data and other information concerning its operation.
Technical Data
Measurement range: |
0-5% CO2 |
Measurement method: |
IR, continuous |
Response time t90: |
≤ 25s |
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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