GL Sciences Gas Leak Detector LD239 adapts thermal conductivity technique between target gases and referential gas.

Being the smallest, lightest and the most sensitive on the market, the LD239 detects up to 0.0005mL/min of helium gas. With the USB port, the LD239 can be recharged easily anywhere.

Specifications:
- Detection method: Thermal conductivity
- Target gases: Helium, CO2, Ar, Ne etc (Not for flammable and corrosive gases)
- Sensitivity (He): (Standard range) 0.005mL/min at minimum; (High range) 0.0005mL/min at minimum
- Display: LCD
- Temperature Range: 10 - 40oC
- Battery: Lithium ion battery installed, rechargeable through a USB port, 2.5 hours for a full recharge. 5 hour battery life with continuous use
- Dimensions: 50(W) × 20(D) ×111(H) mm
- Weight: 95g
- Accessories: USB cable, Sample gas filter (probe built-in), referential gas filter (built-in), warranty certificate