Portable pH/mV/Temp Meter PH-221

PH-221 is a high performance portable pH/ORP meter designed for outdoor applications. The meter contains a built-in setup menu that provides many advanced and useful options to improves accuracy of measurements and simplify operations.

1. During the pH mode, Up to 5 points push-button calibration with auto-buffer recognition.

2. Selectable pH buffer standards and temperature units.

3. Automatically calculates and displays electrode slope after calibration.

4. Automatic Temperature Compensation (ATC) ensures highly accurate measurements over the entire range.

5. Calibration due reminder prompts you to calibrate the meter regularly.

6. During ORP mode, Single point offset calibration allows user adjusts displayed value to a known standard.

7. Absolute or Relative milli-volt (R.mV) measurement provides accurate ORP readings.

8. Automatic endpoint function freezes the stable measured values for easy reading and recording data.

9. Manual temperature calibration provides accurate temperature value.

10. Help message as a operational guide to helps you understand how to use meter.

11. Setup menu lets user customizes buffer standards, calibration points, stability conditions, resolution, temperature units, date and time to meet measurement requirements.

12. Reset function can resumes all settings to factory default values.

13. Expanded memory stores and recalls up to 500 readings.

14. Built-in real-time clock stamps stored data to meets GLP standards.

15. Stored data can be transferred into computer via USB communication 

 

1. pH Range: -2.000~20.000pH 

2. pH Accuracy: ±0.002pH 

3. Resolution: 0.001, 0.01, 0.1pH, Selectable 

4. Measuring Range: ±1999.9mV 

5. mV Accuracy: ±0.2mV 

6. Resolution: 0.1, 1mV

7. Calibration Points: 1 point (Only for relative mV mode)

8. Calibration Solutions: USA(pH1.68/4.01/7.00/10.01/12.45), NIST(pH1.68/4.01/6.86/9.18/12.45), DIN(pH1.09/4.65/6.79/9.23/12.75) 

9. Temperature Range: 0~105°C, 32~221°F 

10. Temperature Accuracy: ±0.5°C, ±0.9°F 

11. Temperature Calibration: Manual 

12. Temperature Compensation: 0~100°C, 32~212°F, Automatic or Manual 

13. Auto-Off: Manual or Automatic (10, 20, 30 minutes after last key pressed, Selectable) 

14. Hold Function: Manual or Automatic 

15. Stability Conditions: Low or High, Selectable 

16. Calibration Due Alarm: 1 to 31 days

17. Reset Function: Yes 

18. Memory: 500 data sets with Date/Time stamping 

19. Output: USB Communication Interface 

20. Connector: BNC 

21. Power Requirements: 3 x 1.5V “AA” Batteries 

22. Battery Life: Approximately 150 hours 

23. Dimensions: 170(L)x 85(W)x 30(H)mm 

24. Weight: 300grams