Online PH ORP Gauge With Ground Electrode For Chemical Processing Water Treatment
Brief introduction
The PH/ORP online gauge for differential signal input is compatible with ground rod pH sensors to solve problems like reference junction potential and sensor ground loops.
The PH/ORP gauges use salt-bridged primary battery electrodes (PH electrodes) to detect changes in the concentration of hydrogen ions in the solution, which affect the electrode level. It is usually made of glass and commonly known as PH glass electrode measurement. Mathematic defines pH as a commonly used congenital negative value for the concentration of hydrogen ions, i.e. pH=-lg[H⁺]
Applications of Online PH ORP gauge
1 Water treatment monitoring: drinking water surface water quality groundwater environmental sewage discharge monitoring urban drainage network monitoring
2 Industrial process monitoring and dosing control treatment: chemical petroleum paper food medicine electroplating PCB manufacture
Technical Parameters of Online PH ORP gauge
| Model | APX2-G3D |
| Software version | DRFN PH Analysis software V1.0 |
| Sensor Input PH | Glass PH sensor. |
| Sensor Input ORP | Redox sensor (platinum / gold sensor) |
| Sensor Input TEMP | PT1000 or NTC10K |
| Sensor Input Ground Electrode | Combination electrode with ground rod |
| Range / Resolution PH | -2～16pH / 0.01pH |
| Range / Resolution ORP | ±2000mV / 1mV |
| Range / Resolution Measure Temperature | -10～150℃ / 0.1℃(14~302℉ / 0.1℉) |
| Performance Accuracy | 0.1% of span or PH: ±0.02pH /ORP: ±2mV, select larger one. |
| Performance Stability | 0.05% of span every 24 hours, no accumulation. |
| Performance Repeat-ability | Better than 0.1% of span |
| Relay Control | 2 SPST relays: PH/OPR alarm, water temperature alarm, electrode cleaning cycle control; the maximum load is 3A/250VAC. |
| Analog Current Output | Two 0/4 ~ 20mA currents; Accuracy 0.00025 (16 bits); Maximum load 1000 Ω. |
| Communication Mode | Two-wire RS485 interface, communication protocol: MODBUS RTU Supports JSON (JavaScript Object Notation) text data formats HJ211 |
| Display Language | 128 x 64 dots; English / Chinese / Other languages |
| Time History/ Data Record | Record in years, months, dates, hours, minutes and seconds, Keep 14,000 historical measurements and last 500 maintenance data |
| Overall Dimensions | 144*144*120mm Panel Hole dimension 138*138mm |
| Power | DC power supply 18～36VDC |
| Power Consumption | 7W |
| Instrument Weight | About 800g |
Advantage of Online PH ORP gauge
PH/ORP gauges can be connected to a variety of traditional PH/T or ORP combination electrodes. It has the patented temperature detection and temperature drift compensation technology
The PH ORP gauges works accurately in years, months, dates, hours, minutes and seconds, it records the measurement data on time to form a consultable historical data. The PH ORP gauges can record up to 14,000 historical measurements. The recording interval is freely set by the user. User maintenances are also recorded and the last 500 maintenance data are saved to help us find and analyze the cause of the instrument's abnormal operation.
The PH/ORP gauges has temperature detection and temperature compensation function, supporting pH electrodes with temperature to measure temperature changes in aqueous solutions. It is a patented temperature drift compensation technology, which makes the instrument more stable and accurate in all kinds of environments.
Why Choose us?
1 Strict quality control system and certificate
2 Reliable Pre-shipment Inspection
3 Very competitive price
4 Advanced equipment and superior technology with patents
5 Various models
6 Rich components and configurations
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