JJB30 Mining Laser Methane Remote Measuring Instrument For Accurate Measurement

Product Specification

1,Overview
The laser methane remote measuring instrument is composed of two subsystems: the laser transmission and reception system and the signal processing system. The laser transmission and reception system consists of two laser beams. One is an infrared laser for gas detection, and the other is a visible red/green laser used for indicating direction and measuring distance. When the user presses the "MEASURE" button, the invisible infrared laser and the red/green indicating laser similar to an indicator pen start to work continuously. The infrared laser emitted by the transmitting end is absorbed by the methane gas when passing through the test gas, and the other part of the light is reflected back to the receiving end through ordinary obstacles (such as: bricks, concrete, grass, etc.). The reflected light returned to the receiving end is collected and converted into an electrical signal and transmitted to the signal processing system. The signal processing system determines whether there is gas leakage in the tested environment by detecting the strength of the laser light absorption and displays the gas concentration in the remote measuring instrument in units of ppm-m or %vol. The visible laser simultaneously measures the distance from the instrument to the reflection point and displays the gas concentration at the same time. Due to the principle that gases (such as methane) have an absorption effect on specific wavelengths of laser, this product only reacts to specific gases (such as methane) and will not cause false alarms due to interference from other gases, dust, water vapor, etc., which greatly improves the detection accuracy and avoids false measurement.The JJT4-1000 methane and carbon monoxide detection and alarm instrument is mainly used by underground detection
2,Features
1. Intrinsically safe product;
2. Selective for gases such as (methane), unaffected by various other gases, water vapor, and dust;
3. Telemetry distance can reach 60 meters;
4. Comes with distance display function;
5. Small in size, light in weight, convenient to carry;
6. Low power consumption, capable of long-term operation;
7. Excellent shock resistance, water resistance, and dust resistance performance;
8. Fast response speed, wide measurement range, high measurement accuracy;
9. Customizable data transmission method according to customer requirements.
3,Functions
Detection method: Adjustable laser spectroscopy principle
Detected gas: CH4 (NH3/HCL/C2H6/C3H8/C4-C6 selectable)
Sensor type: Infrared laser type
Measurement range: 0-10% vol (0 to 99,999 ppm-m)
Distance measuring instrument: Yes
Maximum detection distance: 30m (60m with special reflective surface)
Sensitivity: 5 ppm-m at the detection distance of 0-15m
10 ppm-m % at the detection distance of 15-30m
Measurement accuracy: ±10% @ 100 ppm-m (2m)
Response time: 0.1 s (1s for distance measurement)
Alarm method: Digital flashing alarm
Display method: LCD
Charging method: Charging socket, 110-240VAC, 50/60Hz
Power supply: Rechargeable lithium battery (replaceable charging battery)
Battery life: 10 hours of normal operation after the battery is fully charged
Operating environment: Working temperature: -20ºC to 50ºC
Relative humidity: ≤99%
Air pressure: 80kPa - 116kPa
External dimensions: 158mm × 77mm × 37mm
Overall weight: 380g
Material: ABS + PC
Self-check function: Built-in self-check and calibration function, no daily calibration required
Laser protection level: Class IIIa
Certification method: CNEX Exib IIA T4 Gb
Protection level: IP54
Optional configuration: Ergonomic harness