Redox potential sensor

Product User Manual

MC-ORP

Beijing Mengchuang Weiye Technology Co., Ltd

Our company solemnly promises that for users who purchase our sensors, we will provide free services

Provide one-on-one technical support (including wiring methods, data analysis, maintenance, etc.) until the user masters the use.

This redox potential sensor effectively solves the problem of traditional soil measurementEhThe value needs to be equipped with professional display instruments, calibration is cumbersome, integration is difficult, power consumption is high, the price is expensive, and it is difficult to carry. It is an intelligent upgraded product of industrial acidity meters, which can be used for soil and sewageORPContinuous measurement and control of values, this product is also suitable for urban sewage treatment plants, chemical industry, printing and dyeing, papermaking, pharmaceuticals, electroplating, etching, and environmental protection fields.

lNew oxidation-reduction potential sensor, truly realizing soilEhReal time online monitoring of values;

lAdopting internationally advanced large-area platinum metal electrodes, with long lifespan and maintenance free;

lHigh integration, small size, low power consumption, and easy portability;

lTruly achieving low cost, low price, and high performance;

lHigh integration, long lifespan, convenience, and high reliability;

lEasy to operate and capable of remote one click calibration

lSupport secondary development;

lThe electrode adopts high-quality low-noise cable, which can achieve a signal output length of up to20Above meters.

Suitable for water-saving agricultural irrigation, greenhouse, flowers and vegetables, grassland and pasture, soil rapid testing, plant cultivation, scientific experiments and other fields.

Measurement range:-2000mV ~ 2000mV

accurate true Degree:±10mV

divide distinguish Rate:1mV

steady calm Sex: ≤20mV/the moon

Signal stabilization time:<5s

Power supply mode: DC5~24V

Output signal: 0~2V，4~20mA，RS485class

Work environment: temperature0~60℃Relative humidity≤85%

Power consumption: ≤100mW

External dimensions: 96×96×110mm(High)×wide×Deep)

The redox potential sensor can be connected to various data collectors, data acquisition cards, remote data acquisition modules, and other devices that carry corresponding signal inputs.

Wiring instructions:

The specific wiring method is shown in the following figure

Attention: Be careful when wiring. If the power supply voltage is too high or the polarity is reversed, it will cause permanent damage to the sensor

Determination of soilORPAt that time, soil samples must be fresh soil samples because the redox status of soil can easily change when it comes into contact with the atmosphere. So when sampling, the first thing to do is to prevent air from entering. To this end, special attention should be paid to quickly fill the soil sample into an aluminum or plastic box, cover it tightly, and seal the lid with tape. Bring it back to the laboratory as soon as possible. After opening the cover, scrape off a few millimeters of soil with a small knife and immediately insert the electrode for measurement.

After the platinum electrode comes into contact with the soil, it takes a certain amount of time to reach a stable oxidation-reduction potential value. In theory, achieving equilibriumEhThe value is accurate. For a reversible redox potential system, if the electrode is inert, it should reach equilibrium potential quickly. However, due to some weak equilibrium effects in the soil system, equilibrium is slow in actual testing. According to on-site testing experience, under specific soil conditions, equilibrium can be reached in a few minutes(approachEhThe reading remains stable at a fixed value)Slow ones take more than half an hour,EhThe value changes with equilibrium time or exponent.

In addition, for the convenience of in-situ measurement, readings can be taken two minutes after inserting the platinum electrode into the soil, or1The change in minutes is not greater than5mVAs a relative equilibrium value, the sensor may not be powered during the waiting period for reaching equilibrium. By adopting this method, there is not much error for those with faster balance, but for those with slower balance, they should be fully balanced in advance to measure the balance value.

soilORPelectrolyteRS485message

Modify Address

10Function code write address instruction:00 10 80 00 00 01 02 00(New address) (Low checksum) (High checksum)

1To ensure the correct measurement of electrodes in the mediumORPValue should be avoided to prevent data inaccuracies caused by bubbles between measurement pools;

2Please check if the packaging is intact and verify if the product model matches the selected one;

3Do not connect live wires. After the wiring is completed and checked for accuracy, power can be turned on;

4Do not arbitrarily modify the components or wires that have been welded before leaving the factory when using the product;

5Sensors are precision components. Users are advised not to disassemble them by themselves or use sharp objects or corrosive liquids to contact the sensor surface, in order to avoid damaging the product;

The warranty period for this product is one year. Within twelve months from the date of shipment, if the malfunction is caused by sensor quality issues (non-human damage), our company is responsible for free repair or replacement. After the warranty period, only the cost fee will be charged.