Hand refractometer.

RHA-100	RHA-100 ATC	RHA-200	RHA-200 ATC
RHA-300F	RHA-300F ATC	RHA-303	RHA-303 ATC
RHA-403C	RHA-403C ATC	RHA-404C	RHA-404C ATC
RHA-501	RHA-501 ATC	RHA-503C	RHA-503C ATC

RHA-403C ATC

This model can be used for measuring the freezing point of either propylene or ethylene glycol based cooling systems. This refractometer has the scales for the freezing points of ethylene glycol and propylene glycol just like the Coolant Checkers. In addition to that, it has the scales for the concentration ( v/v ) of those coolants.

该型号折射仪被用于测量以乙二醇和丙二醇两者为基的汽车冷却系统水溶液的冰点温度值和浓度百分比。冷却系统水溶液冰点为摄氏度标定。该型折射仪内建有自动温度补偿系统,温度补偿范围:0°C～30°C。

测量范围:

乙二醇: -50°C-0°C 0 to 70% VOL

丙三醇: -50°C-0°C0 to 70% VOL -70°F-32°F ,-60°C-0°C,
最小刻度值 :
乙二醇: 5°C,5%VOL
丙三醇: 5°C,5%VOL
零点校准：用20°C的蒸馏水在20°C的环境中校准。