D740 - H2 Tracer Gas Leak Detector

The D740 utilizes a solid-state mildly heated sensor designed to be highly sensitive to a safe mixture of 5 %- H 2 / 9 5 % - N2 (Forming gas) Tracer Gas*.

The SAE J2970 certified D740 is specifically designed for mobile air conditioning applications to detect leaks using H2/N2 tracer gas equivalent to 4 g/yr (Hi setting) and 7g/yr (Norm setting) of R-134a. Detection at this level occurs while the probe is moving at a rate of 3 inches/second in compliance with the SAE Standard.

The unique digital display allows for quick and precise pinpointing of the leak source and it indicates the relative size of the system leak. The instrument is CE Certified, and is housed in a rugged ABS high impact plastic case. It does not require rechargeable batteries and is powered by four AA alkaline disposable batteries.

*This low GWP gas mixture is in agreement with current EU legislation and the leadership of the US EPA.


  • Long life, stable sensor
  • Unique numeric leak size indicator
  • Automatic calibration and reset to ambient levels
  • 3 adjustable sensitivity levels
  • Visual LED leak alarm located near sensor
  • True mechanical pump
  • Low battery indicator
  • Uses 4 AA alkaline batteries
  • Audio mute function
  • Comfortable neoprene grip
  • CE Certified EMC 2014/30/EU
  • Made in USA
  • 2- year warranty includes sensor

D740 Specifications

Model # D740
Name Leak Detector, Tracer Gas
Sensitivity 4 g/yr R-134a equivalent (Hi)
7 g/yr R-134a equivalent (Normal)
Sensor Life >300 hours
Response Time Instantaneous
Power Supply 4 AA Alkaline batteries
Battery Life 4-6 hours continuous
Warm up time < 20 seconds
Probe length 17 inches
Numerical Display 7 segment digital display (1 to 9)
Weight, lbs 1.5 lbs
Warranty 2 years (includes sensor)


Download Freewww.bigtheme.net/joomla Joomla Templates Responsive