Portable Conductivity/TDS/Salinity Meter PH-540 Biobase

Portable Conductivity/TDS/Salinity Meter PH-540 Biobase

The PH-540 Portable Conductivity/TDS/Salinity Meter by Biobase is the most advanced model in its series, providing precise multi-parameter water quality measurement in a portable design. It supports 1 to 5-point calibration, multiple compensation modes, and extensive data logging with USB connectivity. Designed for environmental monitoring, aquaculture, and industrial water analysis, the PH-540 ensures high accuracy and convenience for both field and laboratory applications.

Features

1. 1 to 5-point calibration with automatic recognition of conductivity standards.

2. Automatic electrode diagnosis shows calibration points and factors for reliable results.

3. Selectable cell constant, reference temperature, TDS factor, and compensation modes including linear, pure water, seawater, and practical salinity.

4. Automatic temperature compensation provides accurate readings across a wide range of conditions.

5. Auto-Read function detects stable readings and locks them automatically.

6. Calibration due alarm reminds users to recalibrate regularly to maintain accuracy.

7. Auto-power off function with selectable time (10, 20, or 30 minutes) conserves battery life.

8. Setup menu allows adjustments for calibration points, stability criteria, temperature unit, date, and time.

9. Reset function restores all factory default settings.

10. Internal memory stores up to 500 data sets with easy recall.

11. USB communication interface for data transfer to PC or connection to an external power source.

12. Multi-mode power options: batteries, power adapter, or USB.

Applications

1. Environmental monitoring of natural waters, reservoirs, and groundwater.

2. Aquaculture water quality management to maintain optimal conductivity, salinity, and TDS levels.

3. Industrial water treatment, process monitoring, and wastewater analysis.

4. Field and portable laboratory testing for conductivity, TDS, salinity, and resistivity.

Technical Specifications

1. Conductivity range:

   • Standard (CON-1): 2 μS/cm ~ 20,000 μS/cm

   • Optional probes:

     • CON-0.01: 0.01 μS/cm ~ 0.1 μS/cm

     • CON-0.1: 0.1 μS/cm ~ 2 μS/cm

     • CON-10: 20,000 μS/cm ~ 200 mS/cm

2. Conductivity accuracy: ±0.5% F.S.

3. Conductivity resolution: 0.001, 0.01, 0.1, 1 μS/cm

4. Calibration points: 1 to 5 points

5. Calibration solutions: 10 μS/cm, 84 μS/cm, 1413 μS/cm, 12.88 mS/cm, 111.8 mS/cm

6. TDS range: 0 ~ 10.00, 100.0, 1000 ppm; 10.00, 200.0 ppt

7. TDS accuracy: ±1% F.S.

8. TDS resolution: 0.01, 0.1, 1

9. TDS factor: 0.1 ~ 1.0 (default 0.5)

10. Salinity range: 0.00 ~ 42.00 psu, 0.00 ~ 80.00 ppt

11. Salinity accuracy: ±1% F.S.

12. Salinity resolution: 0.01

13. Resistivity range: 0.00 ~ 20.00 MΩ·cm

14. Resistivity accuracy: ±1% F.S.

15. Resistivity resolution: 0.01

16. Temperature range: 0 ~ 105°C / 32 ~ 221°F

17. Temperature accuracy: ±0.5°C / ±0.9°F

18. Temperature resolution: 0.1°C / 0.1°F

19. Offset calibration: 1 point, reading ±10°C

20. Temperature compensation: 0 ~ 100°C, manual or automatic

21. Temperature coefficient: linear (0.0 ~ 10.0%/°C), non-linear, pure water

22. Reference temperature: 20 or 25°C

23. Cell constants: K = 0.1, 1, 10

24. Stability criteria: selectable low or high

25. Calibration due alarm: 1 to 31 days or off

26. Hold function: manual or auto-endpoint

27. Auto-off: selectable 10, 20, or 30 minutes

28. Memory: 500 data sets

29. Data interface: USB

30. Connector type: 6-pin mini-DIN, 3.5 mm jack socket

31. Display: custom LCD, 80 × 60 mm

32. Power supply: 3 × 1.5V AA batteries or DC5V power adapter

33. Battery life: approximately 150 hours (backlight off)

34. Dimensions: 170 × 85 × 30 mm

35. Net weight: 300 g

36. Package size: 475 × 155 × 350 mm

37. Gross weight: 2 kg

Accessories Included

1. PH-540 meter

2. CON-1 conductivity electrode

3. Temperature probe

4. Standard calibration solutions

5. Carrying case

Conclusion

The Biobase PH-540 Portable Conductivity/TDS/Salinity Meter is a premium, multi-parameter water analysis instrument that combines high accuracy, large memory, and versatile measurement modes. With USB connectivity, multi-mode power options, and a rugged portable design, it is an ideal solution for field and laboratory applications in environmental monitoring, aquaculture, and industrial water testing.