RS485 Interface Electrical Isolation PH Probe For Industrial Process Measuring
PH digital sensor can directly output RS485 signal and 4-20mA signal; the product has good accuracy, good stability and strong anti-interference ability. Automatic temperature compensation function.
Without the need for instruments, it can be directly connected to computers, PLCs and other equipment with RS485/4-20mA signal interfaces for data collection and maintenance; it is convenient for users to integrate sensors into the host computer system and the Internet of Things and other industrial control environments.
The sensor can be set through RS485 communication, such as slave address and baud rate, online calibration, factory reset, 4-20mA output corresponding range (4-20mA is optional), proportional coefficient and incremental compensation. A two-point calibration method was used. Power failure protection>10 years.
Specification:
| Model | DPH79 |
| Electrical Isolation | √ |
| Measuring Range | PH: 0~14pH TEMP: 0~50℃ |
| Resolution | 0.01pH/0.1℃ |
| Accuracy | ±0.02pH |
| Temperature Compensation | Automatic, built-in temperature unit |
| Calibration Method | Zero position/slope/deviation |
| Work Pressure | 0~2Bar |
| Operating Temperature | 0.0~50.0℃ |
| Shell Material | ABS |
| Dimension | Diameter: 35mm Total length: 260 mm ( include cleaning cover) |
| Installation Size | 1"NPT at both ends of the installation thread;
insertion depth 100 (including cleaning plug 115) |
| Protection Grade | IP68 |
| Weight | 150g |
Please click the user manual of RS485 pH sensor here:
DPH7 digital pH User Manual.pdf
Features＆ Advantages
● All-in-one package, can be used with the online transmitters, DTU, and portable instruments
● RS485 interface, Modbus RTU, support access to standard industrial control system
● The protection grade is IP68, can work continuously and stably under water for a long time
● Internal storage of calibration data, support offline calibration, plug and play on site
Aplication:
Water treatment monitoring
Drinking water,surface water,water quality analyze,ground water,ect.
Industrial process monitoring and dosing control
Chemical,petroleum,paper,food and medicine,PCB manufacturing,etc.
FAQ
1. What is the measurement principle of this pH electrode?
A: The pH value potentiometric method uses the potential difference of glass electrodes for pH measurement.
2. How to judge the pH of the solution?
A: If the internal hydrogen ion concentration of the pH glass bulb is lower than the outside, the measured solution is recorded as acidic and the pH value is lower than 7; if the two are the same, the solution is neutral and the pH value is equal to 7; if the internal hydrogen ion concentration is higher than externally, the measured solution is alkaline and the pH value is higher than 7.
3. What is the wire length of the pH electrode?
A: The lead wire of this electrode is 1 m by default, other lengths need to be customized, contact our customer service, the price will vary with the change of length.
4. How often must the pH sensor be calibrated?
A: Depends on the type of sample:
Dirty samples and non-aqueous samples require more frequent calibration.
Depends on the required accuracy:
For very accurate measurements, at least daily calibration is required.
Depends on the quality of the electrode:
Old electrodes require more frequent calibration.
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