Gas Leak Detector LD-239

Gas Leak Detector LD-239

LD239 is used for checking gas leakage when replacing a capillary column in a Gas Chromatograph or other tubing at the Gas Chromatograph. LD239 detects gas leakage and indicates by LED and LCD, and also alarms immediately. 

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.


Detection methodThermal conductivity
Target gasesHelium, CO2, Ar, Ne etc
(gases that are largely different from referential gas)
*Not for flammable and corrosive gases
Sensitivity (He)Standard range : 0.005mL/min at minimum Display
High range : 0.0005mL/min at minimum
Temperature Range10 – 40 °C
BatteryLithium ion battery installed
Rechargeable through a USB port, 2.5hours for a full recharge
5 hour battery life with continuous use
Dimension50(W) × 20(D) ×111(H) mm
WeightsApprox. 95 g
AccessoriesUSB cable (1M)
Sample gas filter (probe built-in)
Referential gas filter (builtin)
Instruction manual
Warranty certificate

Gas Leak Detector and Accessories

Gas Leak Detector LD2392702-19340
Battery for LD2392702-19341
USB cable2702-19331
Sample Filter2702-19333
Reference Filter2702-19334

* We may decline an offer of Battery for LD239 Cat No. 2702-19341 because of recent strict regulation.