PHG-3081 Industrial PH Meter For Water Analysis

The DYPHG-3081 Industrial pH Meter is a new-generation Chinese (English) microcomputer-based instrument developed by our company. It features Chinese (English) display, Chinese (English) menu-driven operation, full intelligence, multifunctionality, high measurement accuracy, and strong environmental adaptability. This high-intelligence online continuous monitoring instrument consists of a sensor and a secondary unit. It can be paired with triple or double composite electrodes to suit various application scenarios. It is widely used for continuous monitoring of pH values in solutions across industries such as thermal power, chemical fertilizers, metallurgy, environmental protection, pharmaceuticals, biochemistry, food, and tap water.

Instrument Features:
– New Panel Design: Cast aluminum housing with a metallic finish, creating a high-end E-era water analysis instrument.
– Simple Menu Structure: Text-based user interaction. Compared to traditional instruments, the PHG-3081 offers many additional features, but its categorized menu structure and computer-like operation make it clearer and more convenient to use. No need to memorize operation steps or sequences; simply follow the on-screen prompts without referring to the manual.
– High Intelligence: Utilizes high-precision AD conversion and microcontroller processing technology to perform functions such as pH and temperature measurement, automatic temperature compensation, and self-diagnosis.
– High Reliability: Components are integrated onto a single circuit board, eliminating complex function switches, adjustment knobs, and potentiometers.
– Dual High-Impedance Input: Uses high-impedance components with input impedance up to 10^12 Ω, ensuring strong anti-interference capabilities.
– Solution Grounding: Eliminates ground loop interference.
– Current Isolation Output: Employs optocoupler isolation technology for strong anti-interference and long-distance transmission.
– Communication Interface: Easily connects to computers for monitoring and communication.
– Automatic Temperature Compensation: Compensates for temperature in the range of 0–99.9°C.
– Waterproof and Dustproof Design: IP54 protection rating, suitable for outdoor use.
– Multi-Parameter Display: Displays pH value, input mV (or output current), temperature, time, and status on the same screen.

Technical Specifications:
1. Measurement Range:
– pH: 0–14.00 pH, resolution 0.01 pH;
– Temperature: 0–99.9°C, resolution 0.1°C;
– Potential: –1999.9 to +1999.9 mV, resolution 0.1 mV;

2. Automatic Temperature Compensation Range: 0–99.9°C (reference temperature: 25°C);

3. Sample Water Temperature: 0–99.9°C, 0.6 MPa;

4. Electronic Unit Automatic Temperature Compensation Error: ±0.03 pH;

5. Electronic Unit Repeatability Error: ±0.02 pH;

6. Stability: ±0.02 pH/24h;

7. Input Impedance: ≥10^12 Ω;

8. Clock Accuracy: ±1 minute/month;

9. Current Isolation Output:
– 0–10 mA (load <1.5 kΩ);
– 4–20 mA (load <750 Ω);

10. Output Current Error: ≤±1% FS;

11. Data Storage Capacity: 1 month (1 point/5 minutes);

12. High/Low Alarm Relay: AC220V, 3A;

13. Communication Interface: RS485 or RS232 (optional);

14. Power Supply: AC220V±22V, 50Hz±1Hz;

15. Protection Rating:** IP65;

16. Dimensions:
– Instrument: 146 (L) × 146 (W) × 150 (D) mm;
– Panel cutout size: 138 × 138 mm;

17. Weight: 1.0 kg;

18. Operating Conditions: Ambient temperature 0–60°C, relative humidity <85%;

19. Compatible Electrodes: Triple or double composite electrodes.