1. Introducció
The Sper Scientific 300053 Pocket Digital Refractometer is a precision instrument designed for accurate measurement of Brix concentration in various solutions. This device offers laboratory-grade accuracy in a portable, easy-to-use format, suitable for field applications. It features automatic calibration, automatic temperature compensation (ATC), and an automatic shutoff function to conserve battery life.
Image 1: Sper Scientific 300053 Pocket Digital Refractometer, showing the device's front view with a digital display.
2. Producte acabatview i Característiques
The Sper Scientific 300053 is engineered for convenience and accuracy. Its compact design allows for easy portability, while its digital readout ensures precise measurements.
- Interval de mesura: Brix 0 ~ 95%.
- Resolució: 0.1%.
- Precisió: ± 0.2%.
- Sampel volum: Requires samples as small as 1 ml.
- Visualització: Large LCD shows sample temperature and measurement results.
- Calibració automàtica: One-button calibration to distilled water.
- Compensació automàtica de temperatura (ATC): Ensures accurate readings regardless of sample temperature fluctuations.
- Tancament automàtic: Powers off after 3 minutes of inactivity to save battery.
- Disseny durador: Sturdy, water-resistant case protects internal electronics.
- Indicador de bateria: Alerts when battery replacement is needed (approximately 8000 readings per battery).
Image 2: The refractometer with its sample well cover open, revealing the prism and sampla zona.
3. Contingut del paquet
En desembalar, comproveu que hi hagi tots els elements que s'enumeren a continuació:
- Sper Scientific 300053 Pocket Digital Refractometer
- Distilled Water (for calibration)
- Transfer Pipet
- Bateria AAA
- Manual d'instruccions (aquest document)
- Maleta de transport
Image 3: The refractometer shown with its included carrying case, distilled water vial, and transfer pipet.
4. Configuració
- Instal·lació de la bateria: Open the battery compartment located on the back of the device. Insert the AAA battery, ensuring correct polarity. Close the compartment securely.
- Encesa inicial: Press the "READ" button to turn on the device. The display will illuminate.
- Clean the Prism: Before first use and before each measurement, ensure the prism surface is clean and dry. Use a soft, lint-free cloth to gently wipe the prism.
5. Calibració
For accurate measurements, the refractometer must be calibrated with distilled water. Perform calibration at room temperature (20-25°C / 68-77°F).
- Ensure the prism surface is clean and dry.
- Using the transfer pipet, place 2-3 drops of distilled water onto the prism surface. Ensure the water completely covers the prism.
- Close the prism cover gently.
- Press and hold the "ZERO" button for approximately 2 seconds until "CAL" appears on the display.
- Release the "ZERO" button. The display will show "END" indicating successful calibration.
- Wipe the distilled water from the prism and cover with a clean, dry cloth. The device is now ready for measurement.
6. Funcionament
Seguiu aquests passos per prendre una mesura:
- Ensure the refractometer has been calibrated as described in Section 5.
- Clean the prism surface thoroughly with a soft, lint-free cloth.
- Using the transfer pipet, place 2-3 drops of the sample liquid onto the prism surface. Ensure the sample completely covers the prism.
- Close the prism cover gently.
- Press the "READ" button. The display will first show the sample temperature, then the Brix percentage.
- Record the measurement.
- After measurement, immediately clean the prism and cover with distilled water and a soft, lint-free cloth to prevent residue buildup.
Image 4: The refractometer displaying a Brix reading of 25.8%, with the sample well open.
7. Manteniment
- Neteja: Always clean the prism and cover immediately after use with distilled water and a soft, lint-free cloth. Do not use abrasive materials or harsh chemicals, as they can damage the prism surface.
- Emmagatzematge: Store the refractometer in its carrying case in a cool, dry place, away from direct sunlight and extreme temperatures.
- Substitució de la bateria: When the low battery indicator appears, replace the AAA battery promptly to ensure continued accurate operation.
- Resistència a l'aigua: The device is water-resistant, but it is not submersible. Avoid prolonged exposure to water.
8. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| Lectures inexactes | Prism not clean; improper calibration; insufficient sample volume; sample temperature outside operating range. | Clean prism thoroughly; recalibrate with distilled water; ensure prism is fully covered by sample; allow sampfins que arribi a la temperatura ambient. |
| Display shows "CAL" repeatedly or fails to calibrate | Insufficient distilled water; prism not clean; "ZERO" button not held long enough. | Ensure 2-3 drops of distilled water cover the prism; clean prism; hold "ZERO" button for 2 seconds until "CAL" appears. |
| El dispositiu no s'encén | Dead battery; incorrectly installed battery. | Replace AAA battery; check battery polarity. |
| La pantalla és tènue o parpelleja | Bateria baixa. | Replace AAA battery. |
9. Especificacions
| Paràmetre | Valor |
|---|---|
| Número de model | 300053 |
| Measurement Range (Brix) | 0 ~ 95% |
| Resolució | 0.1% |
| Precisió | ±0.2% |
| Compensació automàtica de temperatura (ATC) | Sí |
| Mínim Sampel Volum | 1 ml |
| Dimensions | 4.65 x 1.26 x 2.44 polzades (118 x 32 x 62 mm) |
| Pes | 4.6 oz (130 g) |
| Font d'alimentació | Bateria AAA |
| Durada de la bateria | Aprox. 8000 lectures |
| País d'origen | Xina |
Image 5: A table detailing specifications for different Sper Scientific refractometer models, including the 300053.
10. Garantia i Suport
Sper Scientific is committed to providing reliable instruments and ensuring customer satisfaction. For warranty information, technical support, or service inquiries, please refer to the official Sper Scientific weblloc web o poseu-vos en contacte amb el seu departament d'atenció al client. Conserveu el rebut de compra com a comprovant de compra.
Per a més ajuda, podeu visitar el Sper Scientific Store on Amazon.
