എക്സ്ടെക് RF20 ഓട്ടോമാറ്റിക് ടെമ്പറേച്ചർ കോമ്പൻസേഷൻ സാലിനിറ്റി റിഫ്രാക്ടോമീറ്റർ യൂസർ മാനുവൽ

1. ആമുഖം

This manual provides detailed instructions for the proper use, maintenance, and care of your Extech RF20 Automatic Temperature Compensation Salinity Refractometer. The RF20 is designed for accurate measurement of salinity in various applications, featuring automatic temperature compensation for reliable readings across different temperatures. Please read this manual thoroughly before operating the device to ensure optimal performance and longevity.

2 സുരക്ഷാ വിവരങ്ങൾ

Observe the following safety precautions to prevent injury and damage to the instrument:

• Always handle the refractometer with care. Avoid dropping or subjecting it to severe impact.
• Do not immerse the entire instrument in water. Only the prism and cover plate should come into contact with the sample.
• Clean the prism and cover plate thoroughly after each use to prevent residue buildup, which can affect accuracy.
• Use only distilled water for calibration.
• Store the refractometer in a dry, cool place, away from direct sunlight and corrosive chemicals.
• കുട്ടികൾക്ക് ലഭ്യമാകാതെ സൂക്ഷിക്കുക.

3. പാക്കേജ് ഉള്ളടക്കം

അൺപാക്ക് ചെയ്യുമ്പോൾ എല്ലാ ഇനങ്ങളും നിലവിലുണ്ടെന്നും നല്ല നിലയിലാണെന്നും ഉറപ്പാക്കുക:

• Extech RF20 Salinity Refractometer
• സംരക്ഷണ കേസ്
• കാലിബ്രേഷൻ സ്ക്രൂഡ്രൈവർ
• Calibration Solution (small bottle)
• ഉപയോക്തൃ ഗൈഡ് (ഈ മാനുവൽ)
• Mini Microfiber Cloth

4. ഉൽപ്പന്നം കഴിഞ്ഞുview

Image: The Extech RF20 Salinity Refractometer, a handheld device with a prism and eyepiece, designed for accurate salinity measurements.

The Extech RF20 is a precision optical instrument designed to measure the concentration of dissolved salts in water. It features a durable plastic body, a clear optical lens system, and an automatic temperature compensation (ATC) function, which ensures accurate readings regardless of ambient temperature fluctuations. The device includes a prism, a cover plate, an adjustment screw for calibration, and an eyepiece for viewing the measurement scale.

5. സജ്ജീകരണം

Before first use, ensure the refractometer is clean and calibrated.

1. അൺപാക്ക്: Carefully remove the refractometer and all accessories from its protective case.
2. പരിശോധിക്കുക: Check the prism and cover plate for any dust, smudges, or damage. Clean if necessary with the provided microfiber cloth.
3. പരിചയപ്പെടുത്തുക: Locate the prism, cover plate, eyepiece, and calibration screw.

6. കാലിബ്രേഷൻ

Calibration is essential for accurate measurements and should be performed regularly, especially before first use or if the instrument has been stored for a long time.

1. Prepare Distilled Water: Ensure you have distilled water at room temperature.
2. എസ് പ്രയോഗിക്കുകampLe: Open the cover plate and place 2-3 drops of distilled water onto the prism. Close the cover plate gently, ensuring no air bubbles are trapped and the water spreads evenly across the prism surface.
3. Observe Reading: Point the refractometer towards a light source (e.g., daylight or a lamp) and look through the eyepiece. You will see a circular field with a blue and white boundary line.
4. ക്രമീകരിക്കുക: If the boundary line is not exactly at the "0" mark on the scale, use the provided calibration screwdriver to turn the calibration screw until the boundary line aligns precisely with the "0" mark.
5. വൃത്തിയാക്കുക: After calibration, wipe the prism and cover plate dry with the microfiber cloth.

Note: The RF20 features Automatic Temperature Compensation (ATC), so temperature adjustments during calibration are not required as long as the distilled water is at room temperature.

7. ഓപ്പറേഷൻ

Follow these steps to take a salinity measurement:

1. Clean Prism: Ensure the prism and cover plate are clean and dry.
2. എസ് പ്രയോഗിക്കുകampLe: Open the cover plate and place 2-3 drops of the sample liquid (e.g., saltwater from an aquarium) onto the prism. Close the cover plate gently, ensuring the liquid spreads evenly without air bubbles.
3. View വായന: Point the refractometer towards a light source and look through the eyepiece.
4. Read Scale: The boundary line between the blue and white fields indicates the salinity value on the scale. Read the value where the boundary line intersects the scale.
5. ഉപയോഗത്തിന് ശേഷം വൃത്തിയാക്കുക: Immediately after each measurement, clean the prism and cover plate thoroughly with distilled water and wipe dry with the microfiber cloth. This prevents cross-contamination and residue buildup.

8. പരിപാലനം

Proper maintenance ensures the longevity and accuracy of your refractometer.

• വൃത്തിയാക്കൽ: After each use, wipe the prism and cover plate clean with a soft, damp cloth or the provided microfiber cloth. For stubborn residues, use a small amount of distilled water. Do not use abrasive cleaners or solvents.
• സംഭരണം: Store the refractometer in its protective case when not in use. Keep it in a dry, cool environment, away from extreme temperatures, humidity, and direct sunlight.
• കൈകാര്യം ചെയ്യൽ: Avoid dropping the instrument or subjecting it to harsh impacts.
• കാലിബ്രേഷൻ പരിശോധന: Periodically check calibration with distilled water, even if not used frequently.

9. പ്രശ്‌നപരിഹാരം

10 സ്പെസിഫിക്കേഷനുകൾ

11. വാറൻ്റിയും പിന്തുണയും

വാറൻ്റി: The Extech RF20 Salinity Refractometer comes with a 1-year warranty from the date of purchase, covering defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.

പിന്തുണ: For technical assistance, troubleshooting, or warranty inquiries, please contact Extech customer support. Visit the official Extech webബന്ധപ്പെടാനുള്ള വിവരങ്ങൾക്കും അധിക ഉറവിടങ്ങൾക്കുമായി സൈറ്റ്.

നിരാകരണം: സ്പെസിഫിക്കേഷനുകൾ അറിയിപ്പ് കൂടാതെ മാറ്റത്തിന് വിധേയമാണ്.