The Testo 316-3 is an easy to use, rugged, refrigerant leak detector that uses a patented heated diode sensor to locate all CFCs, HFCs, and HCFCs refrigerants including R-22, R-134a, R404a, R410a, R-507 and R438a. Service technicians can use the 316-3 refrigerant leak detector to locate leaks in residential and commercial HVAC systems as well as automotive refrigeration systems.
Key Features:
- Patented heated diode sensor
- Sensitivity 0.15 oz. / year for all refrigerants
- Detects all CFCs, HFCs, HCFCs
- High/ low sensitivity and automatic zeroing
- LED indicator and audible alert
This reliable refrigerant leak detector has a sensitivity of 0.15 oz. /year for all refrigerants. The 316-3 is an easy to use one button system to turn the instrument on / off and to adjust the sensitivity from hi to low. This leak detector has an LED indicator, automatic zeroing, and an audible alarm that will easily locate refrigerant leaks even in previously contaminated areas.
The flexible probe is about 11” long with a replaceable sensor. The refrigerant leak detector is operated by 2 “D” batteries with a battery life of about 16 hours of continuous use.
Testo 316-3 includes:
- 316-3
- Sensor head
- Two “D” batteries
- Filter
- Transport case
- Calibration of certificate
- Two year warranty
Proposition 65 Warning for California Residents: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to 
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