The RHA-503A handheld coolant and battery fluid refractometer measures the freezing point temperature (in ℃) of automotive antifreezes based on ethylene glycol or propylene glycol, automotive windshield cleaning fluids, and the specific gravity (SG) of battery fluids. The measurement parameters are shown in the following table.
This model is commonly used in automotive maintenance and battery servicing.
The instrument body is made of copper material to maximize measurement accuracy and durability.
It also has an Automatic Temperature Compensation function (ATC), which can provide accurate readings at different ambient temperatures.
Measurement Specifications
Scale(s)
Measurement Range
Resolution
Accuracy
Ethylene
-50℃ to 0℃
5℃
±5℃
Propylene
-50℃ to 0℃
5℃
±5℃
Battery Fluid
1.100 to 1.400sg
0.01sg
±0.01sg
Cleaner
-40 to 0℃
5℃
±5℃
