Trans instruments RW0025 Operation Manual

Operation Manual for Hand-held Refractometer for
the prediction of Wine-Alcohol in grape juice
RW0025 / RW4025 / RW4440 / RW3230 / RW3225
Product Layout
Prism
Specification:
Model:
Measuring range:
Display Resolution / Accuracy:
Model:
Measuring range:
Display Resolution / Accuracy:
Model:
Measuring range:
Display Resolution / Accuracy:
Model:
Measuring range:
Display Resolution / Accuracy:
Temperature Compensation: Automatic from 10 to 30degree Celsius.
Calibration:
1. Calibration should be made in an ambient environment of 20degree Celsius.
2. Open the Light Plate & place few drops of distilled water ½ fill the prism.
3. Close the Light Plate. Ensure the water is spread across the entire surface of
the Prism. There must not be any bubbles or dry spots on the Prism, which is
cause by too little liquid use.
4. Wait for about 30 seconds; this is to allow the temperature compensation to
take place.
5. Hold the meter in the direction of light source and look into the Eyepiece.
6. Adjust the Focus Dial until image is clear and sharp. Each person has his own
focusing adjustment.
7. Remove the rubber cap on the Calibration knob, with the use of the provided
trimming tool and adjust it until the bottom line of the blue section is at 0%.
8. Calibration Completed.
9. Wipe dries the Light Plate and Prism with soft lint-free clothes before
proceeding with measurement.
Light Plate
Calibration Knob
Focus Dial
RW0025
0 ~ 25% alcohol prediction
±0.2%
RW4440
0 ~ 44% Brix 0 ~ 19 ºOe
±0.5% ±2.0 ºOe
RW3230
0 ~ 32% Brix 30 ~ 140 ºOe
±0.2% ±1.0 ºOe
RW3225
0 ~ 32% Brix 0 ~ 140 ºOe
±0.2% ±1.0 ºOe
RW4025
0 ~ 25% alcohol prediction
0 ~ 40 Brix
±0.2%
______ _
0 ~ 40 ºKMW
±0.5 ºKMW
0 ~ 25 ºKMW
±0.2 ºKMW
Eyepiece