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ORP stands for Oxidation-Reduction Potential, which is a measure of the tendency of a chemical substance to oxidize or reduce another chemical substance, and the unit is millivolts. The ORP Sensor consists of an ORP compound electrode and a mV meter. The ORP composite electrode consists of an electrode that can absorb or release electrons on the surface of its sensitive layer and a reference electrode. The sensitive layer is an inert metal, usually platinum or gold, and the reference electrode is Ag/AgCl like the PH Sensor. The Digital ORP Sensor is a digital module built into the traditional Analog Orp Sensor, so that the chemical signal can be converted into a digital signal output. The DRH790 ORP sensor is an online digital ORP sensor, which is made of high-precision components and advanced production technology. The protection level is IP68, which can be directly put into the water to ensure the reliability and accuracy of the long-term stable operation of the sensor. Digital ORP sensors are widely used in the continuous monitoring of ORP values in solutions such as chemical fertilizers, metallurgy, pharmaceuticals, biochemistry, food, aquaculture, environmental protection water treatment projects and tap water.
Features:
PPS shell, small size, low power consumption, easy to carry
The digital ORP sensor has a temperature electrode inside for temperature measurement
Digital electrodes, support RS485, Modbus communication protocol, convenient networking
There are 1 inch NPT thread at the beginning and end, easy to install
Internal storage of calibration data, plug and play
Specification
| Product Name | Digital ORP sensor |
| Product Model | DRH790 |
| Measuring Range | -2000mV~+2000mV |
| Resolution | ±1mV;0.1℃ |
| Accuracy | 0.1% of the measuring range or ±2mV |
| Response Time | T90<10s |
| Communication | RS485 Modbus |
| Calibration Method | Zero position calibration and slope calibration |
| Working Pressure | 0~4Bar |
| Temp. Compensation | Built-in temperature unit, temperature detection |
| Operating Temperature | 0~50℃ |
| Reference System | Ag/AgCl |
| Shaft Material | PPS |
| Dimensions | Diameter 35mm / Length220mm |
| Protection Grade | IP68 |
| Weight | 200g |
| Power Supply | 9~24V DC |
| Installation Dimensions | A British 1 NPT of the head and the tail for each install thread; |
| Signal Lead | Standard 5 meters, support orders within 60 meters |
Factors Affecting ORP Value
pH has an effect on the ORP value. Therefore, it is meaningless to emphasize the absolute potential of the solution in the actual measurement process. We usually say that the ORP value of a solution indicates a reduction or oxidation state of the solution near a certain numerical point, or indicates a certain property of the solution such as the degree of hygiene, but this value will be quite different, and it cannot be determined Making quantitative determinations is not the same as the required accuracy in pH measurement.
The temperature value has an influence on the ORP value and the temperature coefficient affecting the ORP value is a variable that cannot be corrected, so the ORP sensor usually does not need the function of temperature compensation. Then some ORP sensors that have been used for a long time are easily affected by the temperature of the water body, resulting in errors in the voltage output of the sensor. Therefore, when analyzing the ORP data of water quality, it is necessary to calibrate according to different temperatures. Daruifuno's digital ORP sensor RS485 is equipped with a temperature unit, which can detect temperature.

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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.