Following Details of Leak Detector CPU-1G :

Microprocessor control, with advanced digital signal processing
Tricolor visual display
Seven levels of sensitivity provide an increase of up to 64
Tactile keypad controls
Detect ALL halogen refrigerants
True mechanical pumping provides positive airflow through sensing tip
Mute feature included
Cordless and portable, operates on 2 cell batteries
Carrying case included
Optional carrying holster
Optional reference leak source
Applications:
The CPU-1G leak detector may also used to:
Detect leaks in other systems and storage/recovery containers. It will respond to ALL halogenated (contains Chlorine of Fluorine) refrigerants.
This includes, but is not limited to:
CFCs e.g. R12, R11, R500, R503 etc
HCFCs e.g.R22, R123, R502 etc
HFCs e.g.R134a, R404a, R125 etc
Blends such as AZ-50 HP62 MP39 etc
Detect ethylene oxide gas leaks in hospital sterilizing equipment (it will detect the halogenated carrier gas)
Detect SF-6 in high voltage circuit breakers
Detect most gases that contain Chlorine, Fluorine, and Bromine (halogen gases)
Detect cleaning agents used in dry cleaning applications such as erchloroethyl.
Parameter:
Power supply: 3V DC, two cell Alkaline batteries
Maximum sensitivity: R12,R22,R134a,0.5 oz/yr (14g/yr)
Ultimate sensitivity: less than 0.1 oz/yr (3g/yr) for all halogen based refrigerants
Sensing tip life: approx. 20hours
Operating temperature: 30℉ to 125℉(0℃ to 52℃)