DCH
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 DCH Methanometer is designed for continuous monitoring of methane concentrations in the air. It utilizes two independent components: a pellistor gas detector for measuring concentrations between 0-5% CH4, and a conductivity bridge for measuring concentrations between 5-100% CH4. These measurement ranges are automatically switched between based on the methane concentration detected. The sensor head can be mounted directly on the device or positioned up to 30 meters away via a cable. The air inlet to the sensor head is protected by a replaceable filter. The device has two galvanically isolated digital outputs to signal dangerous methane concentrations, with alarm values set by the operator. A LED on the top of the housing indicates when the methane concentration exceeds the set alarm level. The device is enclosed in a waterproof, durable housing.
Features
Continuous Monitoring: Provides continuous methane concentration measurements in the range of 0-100%.
High Measurement Accuracy: Ensures precise and reliable monitoring.
Fast Response Time: Quick reaction to changes in methane concentration.
Data Transmission via Power Line: Allows data transfer using the existing power supply infrastructure.
Specifications
Measuring Range: 0 – 100% CH4
Measurement Error: 0 – 5% CH4: 5% of reading, but no less than 0.1% CH4; 5 – 100% CH4: 5% of reading, but no less than 3% CH4.
Response Time (T90): < 5 s
Transmission Standards: V23 FSK, 0.4 – 2 V; 4-20 mA; RS 485; 5 – 15 Hz
Operating Temperature Range: -10°C to +40°C
Humidity Range: 0-95% RH
Dimensions: 123 x 180 x 58 mm
Weight: 3.5 kg
Advantages
Continuous Monitoring of Methane Concentration: Provides real-time tracking of methane levels from 0% to 100%, crucial for identifying even slight increases in methane concentration that could pose serious safety risks.
High Accuracy: Ensures that the measurements are reliable, preventing false alarms or non-compliance with safety standards.
Fast Response Time: Quickly reacts to changes in methane levels, allowing for timely action.
Data Transmission via Power Line: This feature simplifies installation by using the existing power supply infrastructure, reducing costs and eliminating the need for additional cables or communication links.
Ex Zone
The device is suitable for use in explosive atmospheres. It is intended for underground mining operations as well as surface mining areas exposed to gas or dust explosions. Group I, Category M1: Designed for mining facilities exposed to methane and coal dust, ensuring a very high level of safety with two independent safety measures.
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