DRG 3 - Measurement PCE Instruments - Free user manual and instructions
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| Type of product | Digital handheld refractometer |
| Brand | PCE Instruments |
| Model | DRG 3 |
| Category | Measurement tools |
| Measurement principle | Refractive index measurement |
| Brix range | 0 – 45 % Brix |
| Resolution | 0.1 % Brix |
| Accuracy | ±0.2 % Brix |
| Automatic temperature compensation | Yes, between 0 and 40 °C |
| Display | LCD screen with backlight |
| Prism material | Optical glass / stainless steel |
| Sample volume | Approx. 0.3 mL |
| Measurement time | ~2 seconds |
| Calibration | Distilled water (zero setting) |
| Power supply | 1 x 9 V block battery |
| Battery life | Approx. 5,000 measurements |
| Auto power-off | After 2 minutes of inactivity |
| Housing protection | IP65 splash-proof |
| Dimensions (W x H x D) | 205 x 62 x 40 mm |
| Weight | 230 g |
| Maintenance | Clean the prism with a soft damp cloth after each measurement |
| Safety precautions | Do not immerse the device in liquids; avoid dropping or scratching the prism |
| Spare parts & repairability | Replaceable battery and accessible prism for professional cleaning or replacement |
Frequently Asked Questions - DRG 3 PCE Instruments
How do I calibrate the PCE Instruments DRG 3 refractometer?
To calibrate, place a few drops of distilled water on the prism and press the zero key. The device will adjust the reading to 0.0 % Brix. It is recommended to calibrate before each use or when the ambient temperature changes significantly.
What is the measurement range of the DRG 3?
The DRG 3 measures Brix from 0 to 45 % with a resolution of 0.1 % and an accuracy of ±0.2 %. It also displays temperature automatically.
Does the DRG 3 have automatic temperature compensation?
Yes, the DRG 3 features Automatic Temperature Compensation (ATC) in the range of 0 to 40 °C, ensuring accurate readings regardless of temperature variations.
How should I clean the prism after measurement?
After each measurement, wipe the prism gently with a soft, damp cloth. Do not use abrasive materials or solvents, as they can damage the prism surface.
What type of battery does the DRG 3 use and how do I replace it?
The device uses a 9 V block battery. To replace it, open the battery compartment on the back, remove the old battery, connect the new one, and close the cover.
Can I measure hot liquids with the DRG 3?
The operating temperature range is 0 to 40 °C. Measuring liquids above 40 °C can damage the prism and result in inaccurate readings. Wait for the sample to cool below this limit.
Is the DRG 3 waterproof?
The DRG 3 is IP65 splash-proof, meaning it is protected against water jets but should not be submerged. Wipe it dry if it gets wet.
How long does the battery last?
With typical use, the battery can power approximately 5,000 measurements. The auto-off function after 2 minutes helps conserve battery life.
What do I do if the display shows an error or no reading?
First, check the battery, ensure the prism is clean, and verify that the sample completely covers the prism. If the issue persists, recalibrate with distilled water. For persistent errors, contact PCE Instruments support.
Can I replace the prism myself?
The prism is a precision component. While it is accessible for cleaning, replacement should be performed by qualified technicians to avoid damage. Contact PCE Instruments for spare parts and service.
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Product information
Brand : PCE Instruments
Model : DRG 3
Category : Measurement