Overview
SK/MIC-600 On-Line Methane Detector (Model: SK/MIC-600-CH4-Y) is a fixed gas concentration monitoring device using infrared NDIR principle. The product adopts Modular design, intelligent Sensor detection technology and overall flameproof (d) structure, standard configuration with dot matrix LCD display, supports three-wire system 4~ 20mA analog and RS485 digital signal output, and can provide customized functions according to user requirements, such as programmable switch output, etc., to facilitate system networking and maintenance.
Features
1. Modular design is adopted to support customization.
2. Sensor detection technology.
3. Integral flameproof (d) structure, suitable for use in hazardous locations.
4. Automatic temperature compensation, zero point and full scale drift compensation.
5. Impacts against high concentration gases with automatic protection function.
6. Full software Adjustment, users can calibrate themselves through 3 buttons, easy to operate.
7. Support 2-wire 4-20mA output.
Principle
The detector uses the principle of infrared NDIR (non-dispersion infrared) Sensor. The infrared light of a specific wavelength is absorbed by the gas to be measured (such as methane), and the gas concentration is calculated by measuring the change of the infrared light Absorption intensity. The instrument works continuously through Sampling methods such as diffusion, pipeline, flow or pump, and converts the concentration signal into a standard 4-20mA current signal or digital signal output.
Applications
Paints room, incinerator, scientific research, production workshop, environment monitoring, building construction, fire alarm, sewage treatment, industrial gas process control, petroleum and petrochemical, chemical plant, smelter, steel plant, coal plant, thermal power plant, boiler room, waste treatment plant, tunnel construction, oil pipeline, gas station, underground gas pipeline maintenance, indoor air mass detection, safety protection equipment monitoring in dangerous places
Standards
Explosion-proof mark: ExdIICT6, Protection Rating: IP66
Steps
1. Connect the power supply and signal lines correctly according to the electrical wiring definition diagram.
2. After power on, the instrument is initialized to observe whether the LCD display is normal.
3. Use the 3 buttons on the instrument to enter the menu, which can be used for alarm point setting, signal fine-tuning and other operations.
4. When calibrating is required, enter the calibrate menu and follow the prompts to enter the standard gas for zero point and range calibrating.
5. After the calibrating is completed, the instrument enters the normal monitoring state and displays the gas concentration in real time.
Notice
Installation location should avoid direct rain, strong wind and mechanical vibration.
• Working ambient temperature range is -20 ℃~ + 50 ℃, Humidity is 10% RH~ 90% RH (no condensation).
• It is recommended to use Shielding cable for connecting cables, with a single wire diameter of not less than 1.5mm and a connection distance of not more than 1000 meters.
• Sensors have a lifespan of approximately 2 years and require regular maintenance and calibrating to ensure measurement accuracy.
Instruments are explosion-proof, but installation, wiring, and maintenance must be carried out by professionals and in accordance with relevant safety regulations.
• Avoid prolonged exposure of the instrument to high concentrations of gas to prevent damage to the Sensor, although the device has an automatic protection function.
• When selecting, please choose according to the actual working conditions (such as gas type, range, environmental conditions).
