YANTAI STARK INSTRUMENT CO., LTD.

Intelligent: This intelligent online PH meter adopts high-accuracy AD conversion and single chip microcomputer

processing technologies and can be used for measuring the PH values and temperature. This meter has many

functions such as automatic temperature compensation and self-checking.

Strong interference immunity: It adopts the latest components and high-impedance input of l0¹²Ω. Its current

output adopts optoelectronic isolating technology. This meter has strong interference immunity and the capacity

of long-distance transmission as well as excellent electromagnetic compatibility.

High protection grade: It adopts waterproof and dust-proof design and is applicable for outdoor use. (With a

protection grade of IP65)

25℃ Conversion: For pure water and ultrapure water added with ammonia, the PH value measured at a temperature other than 25℃ is converted to that at 25℃, which is regarded as the reference temperature;

thus, this PH meter always displays the PH values at 25℃. Therefore, this meter is especially suitable for testing

the various water solutions in power plants.

Multi-parameter display: The PH and temperature values can be displayed on the screen at the same time. It

adopts LED display module with high brightness. The main display can show the pH values with red 10 x 10mm

Nixie tubes. As red display is eye-catching, the displayed values can be seen from a long distance away.

1. Measuring range: pH value: 0~14.00pH; resolution: 0.01pH

                                 Temperature: 0~99.9℃; resolution: 0.1℃

                              ORP: ±1999mV; resolution: 0.1mV

2. Accuracy: pH value: ±0.05pH; temperature: ±0.5℃(0～60.0℃)

3. The automatic temperature compensation range: 0～99.9℃, with 25℃ as the reference temperature.

4. Water sample tested: 0～99.9℃, 0.6MPa

5. Repeatability error of the electronic unit: ±0.02PH

6. Error of the automatic temperature compensation

of the electronic units: ±0.03pH

7. Stability: ±0.02pH/24h

8. Input impedance: ≥10¹²Ω

9. Isolated current output: 4～20mA(load <750Ω)

10. Output current error: ≤±l%F.S.

11. High and low alarm relays: AC 220V, 3A

12. Communication interface: RS485 or 232 (optional)

13. Power supply: AC220V±22V, 50±1Hz; DC24V (optional)

14. Protection grade: IP65

15. Weight: 0.6kg (secondary meter)

16. Working conditions: ambient temperature: 0~60℃; relative humidity <85%

17. Overall dimension: 146 (length) * 146 (width) * 108 (depth) mm; dimension of the hole: 138*138mm

18. The connection tubes for inlet and outlet water: Pipes and hoses

19. It can be equipped with a 3-in-1 or 2-in-1 electrode.