The models have only one unit system: C and F.  With the indication of the temperature we may know the freezing point of either ethylene glycol or propylene glycol based cooling systems.It can be used for checking the strength of electrolyte solution batteries. The RHA-303ATC has Automatic Temperature Compensation System. 


Measuring range:

Ethylene Glycol:   -90F-32F ,70C-0C,                         
Propylene Glycol: -70F-32F ,-60C-0C,                          

Ethylene Glycol: 10F ,5C
Propylene Glycol: 10F,5C


Compensation temperature range: 10C-30C

Calibration: zero calibration with water at 20C

ATC = (Automatic Temperature Compensation) for accurate measurements without recalibration after shifts in ambient working temperature.


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