As our company’s latest PH analyzer, PHG-3081 Industrial PH Meter is a highly

intelligent instrument for continuous online monitoring. It is made up of two

parts: a sensor and a secondary meter. It can be used with a 3-in-1 electrode 

or a 2-in-1 electrode in order to adapt various conditions. It is applicable for PH

measurement of following industries: electric power, environmental protection,

chemical industry, petroleum, metallurgy, running water and foodstuff.

Reliability: All the components are arranged on one circuit board. No complicated

functional switch, adjusting knob or potentiometer is arranged on this instrument.

Double high impedance input: The latest components are adopted; The impedance

of the double high impedance input can reach as high as l012Ω. It has strong

interference immunity.

Solution grounding: This can eliminate all the disturbance of the ground circuit.
Isolated current output: Optoelectronic isolating technology is adopted. This meter 

has strong interference immunity and the capacity of long-distance transmission.

Communication interface: it can be easily connected to a computer to perform

monitoring and communication.

1. Measuring range: PH value: 0~14.00pH; division value: 0.01pH
           Electric potential value: ±1999.9mV; division value: 0.1mV
                          Temperature: 0~99.9°C; division value: 0.1°C
2. Range for automatic temperature compensation: 0~99.9°C, with 25°C as the

reference temperature

3. Water sample tested: 0~99.9°C,0.6Mpa
4. Automatic temperature compensation error of the electronic unit: ±0 03pH
5. Repeatability error of the electronic unit: ±0.02pH
6. Stability: ±0.02pH/24h
7. Input impedance: ≥1x1012Ω
8. Clock accuracy: ±1 minute/month
9. Isolated current output: 0~10mA(load <1 5kΩ), 4~20mA(load <750Ω)
10. Output current error: ≤±l%FS
11. The data storage capacity: 1 month (1 point/5 minutes)
12. High and low alarm relays: AC 220V, 3A
13. Communication interface: RS485 or 232 (optional)
14. Power supply: AC 220V±22V, 50Hz±1Hz, 24VDC(optional)
15. Protection grade: IP54, Alluminium shell for outdoor use
16. Overall dimension: 146 (length) x 146 (width) x 150 (depth) mm;
dimension of the hole: 138 x 138mm
17. Weight: 1.5kg
18. Working conditions: ambient temperature: 0~60°C; relative humidity <85%