Features:

1. Automatic washing setting

2. Onekey recovery

3. Automatic power on test

4. No dead halt design
5. Manual/automatic temperature compensation

6. Automatic circulating button

7. Integrated memory

8. Automatic identification standard liquid

9. Online numerical correction function

Technical parameters:

1. Display mode: LCD, high light
2. Range of measurement: 0～14.00 pH, -1999～+1999mV, 0～99.9℃
3. Relay control range: 0～14pH   
4. Washing time: 1 sec-99 min 59 sec
6. Washing interval: 1-720 min
7. Resolution ratio: 0.01 pH, 0.1mV, 0.1℃ 
8. Precision: ±0.02pH, ±0.5mV, ±0.3℃
9. Grade: 0.05 level
10. Stability: ±0.01pH/24h   
11. Control interface: ON/OFF relay contact
12. Adjustable range: zero ±1.45pH  slope 80%～100%   
13. pH standard liquid: 6.86/4.00/9.18   7.00/4.00/10.00  
14. Relay retardation: 0.01～3.00pH or 0～300mV free adjustment
15. Relay load: MAX  220V   AC  5A
16. Signal output load: ≤500Ω   
17. Signal input impedance: ≥1×1012Ω   
18. Temperature compensation: automatic/manual 0～99.9℃, 25℃ conversion
19. Two groups of signal output: 4～20mA(PH value)   4～20mA(temperature value)
20. Protection grade: IP65
21. Working voltage: AC220V±10%    50/60Hz 
22. Size: 96×96×118mm 
23. Installation: embedded installation
24. Weight: about 1Kg
25. Working condition:
① Environment temperature : -5 ~ 55℃, relative humidity≤90℅
②Relative air humidity: ≤90%   
③Without strong magnetic-field interference except earth magnetic field