Summary of Contents for Techno Tools D740
- Page 1 Model D740 H2 Tracer Gas Leak Detector Detects H2/N2 5/95% Tracer Gas User Manual Design certified by ACSI to meet SAE Standard J2970...
- Page 2 INTRODUCTION The D740 features a long life sensor technology that is designed to detect H2/N2 5/95% Tracer Gas mixture, also known as “Forming Gas”. The instrument’s unique digital leak size indicator takes the guesswork out of whether or not to repair a small leak. The digital display is independent from the audio alarm and sensitivity level, allowing the precise pinpointing of the leak source.
- Page 3 3/8” and moving at approximately 3”/second. If the detector alarms, make smaller sweeps back and forth until the leak source can be pin pointed. Note: The D740 only responds to changes in leak concentration. The alarm will re-set automatically if the sensor tip is held at the leak source.
- Page 4 95% Nitrogen. For this reason, the Tracer Gas can be released into the environment after the leak detection procedure is completed.The D740 detects the hydrogen component of the Tracer gas and because hydrogen molecules are so small, it is an ideal gas for leak detection.
- Page 5 Adjusting Sensitivity Levels The Leak Detector will default to the “NORM” sensitivity level automatically once the unit comes out of the warm up cycle and the green LED will turn on. To change sensitivity levels, press the SENS once for “HI” sensitivity (red LED will turn on) and again for “LO”...
- Page 6 Maintenance Batteries: Install Batteries: Remove screw located at rear end of unit and pull down hinged battery door to open as shown. Always insert all four batteries into the battery compartment in the same direction. Note polarity mark on the inside of the battery door for proper battery orientation.
- Page 7 Some automotive solvents and chemicals have similar hydrocarbon properties as H2 and may elicit a positive response (<20 seconds) from the D740. Before leak checking, clean up any chemicals in the list below that elicit a positive response. Chemical Name/Brand...
- Page 8 Replacement Parts Item Part Number H2/N2 Sensor with Filter AC-SEN00012A Sensor filters (5 pack) AC-FIL0001A Leak Test Vial AC-LSA0001A Parts Kit(includes H2 sensor, test vial, & filter kit) AC-KIT0005A Carrying Case AC-CAS0001A RETURN FOR REPAIR POLICY Every effort has been made to provide reliable, superior quality products.
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