GL Sciences LD239 Instruction Manual

Thank you for purchasing the Leak Detector LD239. To maintain the optimum performance, read this manual before using it. Before operating the LD239, please read this operation manual carefully to ensure proper use. We recommend that you keep this operation manual on hand near the product for future reference. Introducti ...

the first time, or before using the product following an extended period of disuse, recharge the battery with an attached micro USB cable connecting to PC. (Charging micro USB cable : Cat.No.2702-19331) If PC is not available, use a commercial AC-USB exchange adaptor. ...

GL Sciences LD239 sufficient ventilation in the room. 2) The sensitivity of the detector comes to be extremely worse when the surrounding contains the leaking gas. 3) Sensitivity of LD239 can be affected by wind. Please be careful for outdoor use. 4) Do not use the detector to detect corrosive gases. 5) LD239 is n ...

■ & □ on the left will be blinking alternately when the detector becomes stable. When the leak indicator is displayed without leakage, press ZERO / ENTER key to adjust the zero balance. Under conditions such as fluctuation of temperature or humidity, the detector needs zero point adjustment. LED display as w ...

GL Sciences LD239 conductivities of gas and air (24.1(mW / m㨯M at 0 °C, 1atm); a large difference results in a high sensitivity. Also, the kinds of gas and humidity should influence the sensitivity. Thermal conductivity of some common gases [(mW / m㨯k) at 0°C, 1atm] � ...

GL Sciences LD239 㪩㪶㪪㫋㪻 㪩㪶㪟㫀 Standard Display(Std range) Standard Display(Hi range) 㪧㪸㫉㪸㫄㪅㪪㪼㫋 䄿㪙㪸㪺㫂㫃㫀㪾㪿㫋 㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷 䅃㪘㪅㪧㪅㪦㪽㪽㩷㩷㩷㩷 ●Setting the Range ●Setting the Buzzer ●Setting the LED ●Setting the Backlight ●S ...

GL Sciences LD239 a) Unscrew the probe cap counterclockwise, and disjoin the probe and probe cap. The Sample Filter is attached to the probe cap. b) Remove the old Sample Filter from the probe cap. When the Sample filter is stuck to the probe cap, use long-nose pliers. c) Insert the PTFE tubing into a new Sample Filter to attach the Sampl ...

GL Sciences LD239 on. Then, the LCD shows warming-up display. Warming-up takes 25seconds at standard range (Std), 90seconds at high range (Hi). Press the ZERO/ENTER key to skip it. 5. Operating Procedure 4 2) After the warm-up or skipping the warm-up, standard display is shown. (1) Range R_Std: Standard S ...