MM-4
A methanometer is an essential device for measuring methane concentration in the air, particularly in industries such as gas and mining, where controlling methane levels is crucial for safety. Methanometers are equipped with detectors that allow for precise measurement of even small amounts of methane, enabling quick reactions in potentially hazardous situations. This device allows operators to monitor the work environment and take appropriate action in case elevated methane levels are detected, minimizing the risk of threats related to this gas.
Description
The MM-4 methanometer is designed for continuous measurement of methane concentration within the range of 0-100%, both in:
– Atmospheric environments
– Pipelines
The methanometer is compatible with the SMP-NT automatic methane monitoring system and is remotely powered from the MZT-10/60M power and transmission module through a standard telecommunication line, which also transmits data. It also features an automatic shutdown function in the event of exceeding the permissible methane concentrations. The device can also operate without connection to the automatic methane monitoring system.
Features
– Continuous methane concentration measurement in the atmosphere or pipeline
– Display of measurement results and input/output statuses
– Telemetry communication with the surface station
– Alarm signaling for exceeding set threshold levels
– Support for two-state input and output systems
– Self-diagnostics and display of emergency statuses
Specification
Measurement Type: Continuous in the range of 0–100%.
Air Flow Method: Diffusion.
Response Time: T90 ≤ 5s for models with an internal filter made of perforated stainless steel; T90 ≤ 10s for models with a metal powder sintered filter.
Maximum Cable Length: 30 m for CKM/W, 30 m for CKM/S connecting the methanometer to the measurement head.
Power Supply: From the surface station, 56 V DC, 40 mA, or from the underground power supply.
Battery: 7.2 V / 700 mAh
Battery Operation Time: Minimum 8 hours (when fully charged).
Maximum Line Resistance: 700Ω
Transmission Standard: V23, through the power line.
Operating Temperature Range: -20 °C to +40 °C.
Relative Humidity: 0-95% (non-condensing).
Dimensions: With chamber in the cover: 160 x 210 x 76 mm; With chamber in the head (without cable): 160 x 290 x 85 mm.
Weight: With chamber in the cover: 3.5 kg; With chamber in the head: 3.7 kg; CKM/W cable (15 m length): 2.8 kg
Enclosure Protection: IP54.
Advantages
Precise Measurement: Essential for safety in mines and industrial process management.
Display of Measurement Results: A clear display that shows current methane concentration.
Display of Output Status: Information about the status of outputs such as alarm indicators or relays, enabling operators to monitor and respond to environmental changes.
Telemetry Communication: Remote monitoring and control via the telemetry line, essential for mining and extensive pipeline systems.
Alarm Threshold Exceedance Signaling: Immediate response to potential danger when threshold levels are exceeded.
Support for Two-State Input and Output Systems: Allows integration with various monitoring and control systems.
Self-Diagnostics: Continuous monitoring of the device’s status and real-time detection of faults or issues.
Emergency Status Display: Alerts operators to errors, communication disruptions, or power issues.
Ex Zone
The device is designed for use in explosive atmospheres. It is intended for underground operation in mines and surface areas at risk of gas or dust explosions. Group I, Category M1 – designed for mining facilities exposed to methane and coal dust hazards, providing a very high level of safety with two independent safety measures.
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