Trans instruments RW0025 User manual

Operation Manual for Hand-held Refractometer for
the prediction of Wine-Alcohol in grape juice
RW0025 / RW4025 / RW4440 / RW3230 / RW3225
Product Layout
Specification:
Model: RW0025 RW4025
Measuring range: 0 ~ 25% alcohol prediction 0 ~ 25% alcohol prediction
0 ~ 40 Brix
Display Resolution / Accuracy: ±0.2% ±0.2%
Model: RW4440 ______ _
Measuring range: 0 ~ 44% Brix 0 ~ 19 ºOe 0 ~ 40 ºKMW
Display Resolution / Accuracy: ±0.5% ±2.0 ºOe ±0.5 ºKMW
Model: RW3230
Measuring range: 0 ~ 32% Brix 30 ~ 140 ºOe
Display Resolution / Accuracy: ±0.2% ±1.0 ºOe
Model: RW3225
Measuring range: 0 ~ 32% Brix 0 ~ 140 ºOe 0 ~ 25 ºKMW
Display Resolution / Accuracy: ±0.2% ±1.0 ºOe ±0.2 ºKMW
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.
Operation Manual for Hand-held Refractometer for
the prediction of Wine-Alcohol in grape juice
RW0025 / RW4025 / RW4440 / RW3230 / RW3225
Product Layout
Specification:
Model: RW0025 RW4025
Measuring range: 0 ~ 25% alcohol prediction 0 ~ 25% alcohol prediction
0 ~ 40 Brix
Display Resolution / Accuracy: ±0.2% ±0.2%
Model: RW4440 ______ _
Measuring range: 0 ~ 44% Brix 0 ~ 19 ºOe 0 ~ 40 ºKMW
Display Resolution / Accuracy: ±0.5% ±2.0 ºOe ±0.5 ºKMW
Model: RW3230
Measuring range: 0 ~ 32% Brix 30 ~ 140 ºOe
Display Resolution / Accuracy: ±0.2% ±1.0 ºOe
Model: RW3225
Measuring range: 0 ~ 32% Brix 0 ~ 140 ºOe 0 ~ 25 ºKMW
Display Resolution / Accuracy: ±0.2% ±1.0 ºOe ±0.2 ºKMW
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
caused 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.
Eyepiece
Calibration Knob
Focus Dial
Light Plate
Prism
Eyepiece
Calibration Knob
Focus Dial
Light Plate
Prism

Making Measurement:
1. Open the light plate & place 2 to 3 drops of the wine liquid on the prism.
2. 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.
3. Wait for about 30 seconds; this is to allow the temperature compensation to
take place. (ATC models only)
4. Hold the meter in the direction of light source and look into the Eyepiece.
5. Select the scale, which is the intended unit of measurement.
6. Take the reading from the scale on the line where the darkest blue and white
area meets. Disregard faint or white lines
7. Wipe dry the Light Plate and Prism with a soft lint-free clothe after each and
every test and before storing away.
8. It is important to maintain the Light Plate and Prism dust and stain free in order
to have good repeatability measurement.
Precautions in Usage:
1. Clean the instrument between each measurement and before storage with a
soft cloth. Residue of samples stained on the prism could damage the coating
on the prism.
2. Do not measure with abrasive or corrosive chemicals. This will damage the
prism’s coating.
3. Do not immerse the instrument in water. If the view inside the Eyepiece
becomes foggy, water has entered into the body. Call a qualified service
technician or contact your dealer.
4. Do not clean the prism with thinner as this will remove the special coating on
the prism and damage the unit.
5. Do not store the instrument in a damp environment. Store only in a cool and
dry environment.
6. This is an optical instrument and requires careful handling and storage. With
care, this instrument will provide years of reliable service.
Making Measurement:
1. Open the light plate & place 2 to 3 drops of the wine liquid on the prism.
2. 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.
3. Wait for about 30 seconds; this is to allow the temperature compensation to
take place. (ATC models only)
4. Hold the meter in the direction of light source and look into the Eyepiece.
5. Select the scale, which is the intended unit of measurement.
6. Take the reading from the scale on the line where the darkest blue and white
area meets. Disregard faint or white lines
7. Wipe dry the Light Plate and Prism with a soft lint-free clothe after each and
every test and before storing away.
8. It is important to maintain the Light Plate and Prism dust and stain free in order
to have good repeatability measurement.
Precautions in Usage:
1. Clean the instrument between each measurement and before storage with a
soft cloth. Residue of samples stained on the prism could damage the coating
on the prism.
2. Do not measure with abrasive or corrosive chemicals. This will damage the
prism’s coating.
3. Do not immerse the instrument in water. If the view inside the Eyepiece
becomes foggy, water has entered into the body. Call a qualified service
technician or contact your dealer.
4. Do not clean the prism with thinner as this will remove the special coating on
the prism and damage the unit.
5. Do not store the instrument in a damp environment. Store only in a cool and
dry environment.
6. This is an optical instrument and requires careful handling and storage. With
care, this instrument will provide years of reliable service.
A Product of Singapore
www.transinstruments.com
A Product of Singapore
www.transinstruments.com