1. Introducere
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. Produs terminatview și Caracteristici
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 măsurare: Brix 0 ~ 95%.
- Rezoluţie: 0.1%.
- Precizie: ± 0.2%.
- SampVolumul: Requires samples as small as 1 ml.
- Afişa: Large LCD shows sample temperature and measurement results.
- Calibrare automată: One-button calibration to distilled water.
- Compensarea automată a temperaturii (ATC): Ensures accurate readings regardless of sample temperature fluctuations.
- Oprire automată: Se oprește după 3 minute de inactivitate pentru a economisi bateria.
- Design durabil: Sturdy, water-resistant case protects internal electronics.
- Indicator baterie: 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 sample area.
3. Conținutul pachetului
La despachetare, verificați dacă sunt prezente toate articolele enumerate mai jos:
- Sper Scientific 300053 Pocket Digital Refractometer
- Distilled Water (for calibration)
- Transfer Pipet
- Baterie AAA
- Manual de instrucțiuni (acest document)
- Husă de transport
Image 3: The refractometer shown with its included carrying case, distilled water vial, and transfer pipet.
4. Configurare
- Instalare baterie: Open the battery compartment located on the back of the device. Insert the AAA battery, ensuring correct polarity. Close the compartment securely.
- Pornire inițială: 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. Calibrare
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. Funcționare
Urmați acești pași pentru a efectua o măsurătoare:
- 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. Întreținere
- curatenie: 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.
- Depozitare: Store the refractometer in its carrying case in a cool, dry place, away from direct sunlight and extreme temperatures.
- Înlocuire baterie: When the low battery indicator appears, replace the AAA battery promptly to ensure continued accurate operation.
- Rezistenta la apa: The device is water-resistant, but it is not submersible. Avoid prolonged exposure to water.
8. Depanare
| Problemă | Cauza posibila | Soluţie |
|---|---|---|
| Citiri inexacte | 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 sample to reach room temperature. |
| 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. |
| Dispozitivul nu pornește | Dead battery; incorrectly installed battery. | Replace AAA battery; check battery polarity. |
| Afișajul este slab iluminat sau pâlpâie | Baterie descărcată. | Replace AAA battery. |
9. Specificații
| Parametru | Valoare |
|---|---|
| Numărul de model | 300053 |
| Measurement Range (Brix) | 0 ~ 95% |
| Rezoluţie | 0.1% |
| Precizie | ±0.2% |
| Compensarea automată a temperaturii (ATC) | Da |
| S minimample Volumul | 1 ml |
| Dimensiuni | 4.65 x 1.26 x 2.44 inchi (118 x 32 x 62 mm) |
| Greutate | 4.6 oz (130 g) |
| Sursa de alimentare | Baterie AAA |
| Durata de viață a bateriei | Aproximativ. 8000 de citiri |
| Țara de origine | China |
Image 5: A table detailing specifications for different Sper Scientific refractometer models, including the 300053.
10. Garanție și asistență
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 website-ul lor sau contactați departamentul lor de asistență pentru clienți. Păstrați bonul fiscal ca dovadă a achiziției.
Pentru asistență suplimentară, puteți vizita Sper Scientific Store on Amazon.