S40 Bluetooth Water Hardness Tester

Features:

1. 2 to 5 points calibration from low to high concentration.

2. Selectable water hardness units, including the German degree (°dH), English degree (°e), French degree (°fH), gpg, mg/L and mmol/L.

3. Manual temperature compensation eliminates errors caused by temperature deviation.

4. Auto-read function senses and locks the measurement endpoint.

5. Timed interval measurement sends data to memory or a printer.

6. Limit alarm automatically alerts when measurements exceed the specified range.

7. Calibration due alarm reminds user to calibrate the tester regularly.

8. Calibration log shows the date, time, calibration points and electrode slopes.

9. Password protection prevents unauthorized calibration and settings.

10. Reset function automatically restores all settings to the factory defaults.

Specifications:

Water Hardness:

1. Range (Concentration): 0.05 to 200mmol/L

2. Range (German degree): 0 to 1122°dH

3. Range (English degree): 0 to 1404°e

4. Range (French degree): 0 to 2000°fH

5. Range (Grains per gallon): 0 to 1170gpg

6. Range (CaCO₃): 0 to 20000mg/L

7. Range (CaO): 0 to 11220mg/L

8. Range (Ca²⁺): 0 to 8020mg/L

9. Resolution: 0.001, 0.01, 0.1, 1, automatic

10. Accuracy: ±1% F.S.

11. Calibration: 2 to 5 points

12. Calibration Solutions: 0.01 / 0.1 / 1 / 10 / 100mmol/L

mV:

1. Range: -2000.0 to 2000.0mV

2. Resolution: 0.1 / 1, selectable

3. Accuracy: ±0.2 mV

Other:

1. Temperature Compensation: 0 to 100°C / 32 to 212°F, manual

2. Stability Criteria: Fast / Standard / Strict

3. Measurement Modes: Continuous / Auto-read measurement endpoint

4. Timed Interval Readings: 10 / 30 / 60 / 300 seconds or off

5. Calibration Due Alarm: 1 to 99 days or off

6. High/Low Limit Alarm: Selectable

7. Data Transfer: Memory / Printer

8. Password Protection: 6 digits

9. Connectivity: Bluetooth 4.0 or newer

10. Maximum Wireless Range: 10m

11. Power Supply: 3.7V rechargeable battery

12. Environmental Conditions: 0 to 50°C / 32 to 122°F, relative humidity < 80%

13. Dimensions: 175 × 40mm

14. Weight: 120g