Coal Mine Laser Methane Detection and Shutdown Controller GJJ100B-INTL

Classification

Coal Mine Laser Methane Detection and Shutdown Controller GJJ100B-INTL

Coal Mine Laser Methane Detection and Shutdown Controller GJJ100B-INTL
Coal Mine Laser Methane Detection and Shutdown Controller GJJ100B-INTL - Image 2
Coal Mine Laser Methane Detection and Shutdown Controller GJJ100B-INTL - Image 3
Coal Mine Laser Methane Detection and Shutdown Controller GJJ100B-INTL - Image 4
Coal Mine Laser Methane Detection and Shutdown Controller GJJ100B-INTL - Image 5
Coal Mine Laser Methane Detection and Shutdown Controller GJJ100B-INTL - Image 6
Coal Mine Laser Methane Detection and Shutdown Controller GJJ100B-INTL - Image 7
Sampling Method Passive Diffusion
Measuring Range 0-100 %VOL
Accuracy 0.00-1.00 %VOL : ±0.05 %VOL
Resolution 1.0-100.0 %VOL : True value ±5%
Response Time (T90) 0.01 %VOL
Display Type ≤25S
Alarm Sound Level 7-segment LED
Environmental Parameters >80 dB @ 1m
• Operating Temperature 0-40℃
• Storage Temperature -40-60℃
• Operating Humidity ≤98%
• Operating Pressure 80kPa-116kPa
Power Specifications > 4h
• Backup Power Runtime Online automatic charging
• Charging Method Built-in Lithium Manganate Battery
• Internal Battery 12-24VDC
• Input Voltage ＜4.8W
• Power Consumption RS485(default) or CAN or
Communication Specifications 4-20mA(corresponds to 0-10%VOL)
• Communication Interface Modbus RTU
• Communication Protocol SPDT
Relay Characteristics 1A @ AC380V
• Contact Form 10A @ AC250V
• Power Cutoff Capability 5A @ DC36V
Mechanical Construction 10A @ DC24V
• Shell Material 304 Stainless Steel
• Ingress Protection IP65
• Weight 2.0kg
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Application Features

Safety Interlock Cutoff

  • Auto-shutdown on gas overload prevents ignition risks
  • SPDT-integrated system meets mining Ex-protected standards

Blackout Resilience

  • LiMn₂O₄ battery ensures 4-hour continuous monitoring
  • Online auto-charging synchronizes with equipment power systems

Laser-Accurate Detection

  • TDLAS enables 0-100% CH₄ detection with humidity resistance
  • Lifetime calibration-free and active dust compensation

Industrial-Grade Architecture

  • 304L Stainless Steel sealed construction (IP65 rated)
  • Compact design for confined space installations

Smart Connectivity

  • RS485/CAN/4-20mA multi-interface support
  • Real-time temp/pressure data enables smart ventilation or

speed control

Equipment Functions

Laser Methane Detection

Over-Limit Alarm and Power-off Control

Backup Power Operation

Remote-control Parameter Setting

Areas of Application

Mining Equipment Safety

  • CH₄ monitoring & power interlock for shearers/roadheaders
  • Haul truck/shuttle car operational safety

Smart Ventilation

  • CH₄-adaptive speed control for fan arrays
  • Ventilation optimization in gas drainage

Critical Zone Monitoring

  • Methane accumulation in sealed goafs/tunnels
  • Explosive atmosphere monitoring for key facilities

Mine Modernization

  • Gas protection retrofits for legacy equipment
  • Smart safety networks deployment

Certifications

Explosion Protection

  • China Ex:

-Ex ib I Mb

Functional Safety

  • China Mining Safety

-MA (Coal Mine) & KA (Non-coal Mine)