Produkt overview
The JUANJUAN 5-in-1 Digital Water Quality Tester is a versatile and reliable instrument designed for precise measurement of pH, Temperature, Total Dissolved Solids (TDS), Electrical Conductivity (EC), and Salinity in various water applications. Its waterproof design, automatic calibration, and clear LCD display make it suitable for hydroponics, gardening, pools, spas, aquariums, and drinking water analysis.
Opsætning og førstegangsbrug
1. Batteriinstallation
The meter requires 3 x 1.5V LR44 button cell batteries (not included). To install:
- Unscrew the battery compartment cap at the top of the meter.
- Insert three LR44 batteries, ensuring correct polarity (+/-).
- Securely replace the battery compartment cap.
2. Preparing the Meter
Before first use and after storage, remove the protective cap from the electrode. Rinse the electrode with distilled water and gently blot dry with a clean tissue.
3. Kalibrering
The meter supports automatic 3-point calibration for pH and 3-point calibration for EC/TDS/Salinity. Calibration is crucial for accurate readings.
pH-kalibrering:
The meter automatically identifies pH buffer solutions (pH 4.00, 6.86, 9.18).
- Tænd måleren.
- Prepare the pH buffer solutions (e.g., by dissolving buffer powder in 250ml of distilled water).
- Immerse the electrode into the first pH standard solution (e.g., pH 6.86).
- Press and hold the 'MODE/CAL' button for 6 seconds until the display flashes 3 times, indicating successful calibration.
- Repeat for pH 4.00 and pH 9.18 solutions.
EC/TDS/Salinity Calibration:
The meter supports 3-point calibration for EC/TDS/Salinity using standard solutions (1413 uS/cm, 12.88 mS/CM, 111.8 mS/CM).
- Tænd måleren.
- Immerse the electrode into the first standard solution (e.g., 1413 uS/cm).
- Short press the 'MODE/CAL' button to enter calibration mode.
- Press and hold the 'MODE/CAL' button for 6 seconds until the display flashes 3 times, indicating successful calibration.
- Repeat for other standard solutions as needed.
Betjeningsvejledning
1. Tænd/sluk
Tryk på tænd / sluk-knappen (
) to turn the meter on or off. The meter will automatically shut down after 5 minutes of inactivity to conserve battery life.
2. Valg af tilstand
Press the 'MODE/CAL' button to cycle through the measurement modes: pH, TDS, EC, Salinity, and Temperature.
3. Målinger
- Ensure the electrode is clean and the protective cap is removed.
- Sæt elektroden ned iample solution up to the immersion line.
- Gently stir the meter to remove air bubbles and allow the reading to stabilize.
- Read the value displayed on the LCD screen.
4. Hold-funktion
Press the 'HOLD/TEMP' button to freeze the current reading on the display. Press it again to release the hold function.
5. Temperature Unit Switching
While in measurement mode, press and hold the 'HOLD/TEMP' button to switch between Celsius (°C) and Fahrenheit (°F).
Opretholdelse
1. Elektroderens
Always clean the electrode thoroughly with distilled water after each use to prevent contamination and ensure accurate future readings. Gently blot dry; do not rub.
2. Opbevaring
Replace the protective cap on the electrode when not in use. Store the meter in a cool, dry place. Do not store the electrode dry; keep it moist with a few drops of storage solution or pH 4.0 buffer solution in the cap.
3. Udskiftning af batteri
When the low-battery indicator appears on the display, replace all three LR44 batteries promptly to maintain accuracy.
Fejlfinding
- Upræcise læsninger: Ensure the electrode is clean and properly calibrated. Recalibrate if readings seem off.
- pH Calibration Failure: If the pH calibration does not identify the solution, the electrode may be broken and require replacement.
- Intet display/svagt display: Kontroller batteriinstallationen og udskift batterierne om nødvendigt.
- Meter not turning on: Verify batteries are correctly inserted and have sufficient charge.
Specifikationer
| Parameter | Måleområde | Opløsning | Nøjagtighed |
|---|---|---|---|
| pH | 0.01 - 14.00 pH | 0.01 pH | ±0.05 pH |
| EC | 0 - 10000 uS/cm, 10.01 - 19.99 mS/CM, 20.1 - 400 mS/CM | 1 uS/cm; 0.1 mS/CM | ±2 % af aflæsningen |
| TDS | 0 - 1000 ppm, 1000 ppm - 10000 ppm, 10.1 - 200.0 ppt | 1 ppm; 0.1 ppt | ±2 % af aflæsningen |
| Saltholdighed | 0.00 - 25.00% | 0.01 % | 0.01-5.00% (±0.1%), 5.10-25.00% (±1%) |
| Temperatur | 0.1 - 60.0 °C (32.0 - 140 °F) | 0.1 ° C / ° F | ±0.5 °C |
- Vandtæt vurdering: IP67 (Protection against dust penetration; protection for short soaking)
- Arbejdsmiljø: 0 to 60.0 °C (32.0-140 °F); RH 100%
- TDS Factor: 0.4 til 1.0
- Automatisk nedlukning: 5 minutter
- Strømkilde: 3 x 1.5V LR44 button cell batteries (not included)
- Skærmstørrelse: 33 x 24 mm
- Dimensioner: 183 x 37 x 37 mm (7.2 x 1.5 x 1.5 tommer)
- Vægt: 90 g (3.2 oz)
Brugertips
- Almindelig kalibrering: Calibrate the meter regularly, especially if you notice inconsistent readings or if the meter has been stored for a long time.
- Elektrodepleje: The electrode is a sensitive component. Handle it with care and ensure it is always kept moist with storage solution or pH 4.0 buffer when not in use.
- Batteritype: Always use LR44 button cell batteries for replacement.
- Chlorine Measurement: This meter does not directly measure chlorine levels. It measures pH, TDS, EC, Salinity, and Temperature.
- Accuracy at High Salinity: Note that the accuracy for salinity measurements may decrease above 160 ppt.
Garanti og support
For any questions, technical support, or warranty claims, please contact the seller or manufacturer directly. Keep your purchase records for reference.
