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Wuhan Zhongyi Baikong Instrument Co., Ltd
EC580 Conductivity Meter
NegotiableUpdate on 04/19
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Overview
EC580 Conductivity Meter
Product Details
A complete conductivity measurement system includes transmitters, sensors, and sensor mounting brackets.
The EC580 model is our company's new generation of high-end conductivity meters made entirely of Chinese microcomputers. It has the characteristics of full Chinese display, Chinese menu operation, full intelligence, multifunctionality, high measurement performance, and strong environmental adaptability. The transmitter converts electrode signals into standard electrical signals and can output 4-20mA analog signals, upper and lower limit alarm control signals, RS485 digital communication, etc. Display temperature, conductivity value, time, status and other parameters on the same screen. It can be widely used for continuous measurement of conductivity values in solutions such as thermal power, chemical fertilizers, metallurgy, pharmaceuticals, biochemistry, food, and tap water.
Equipped with non-contact electrodes, it can measure higher conductivity values of corrosive liquids.
Measurement principle:To avoid electrode polarization, the instrument generates a highly stable square wave signal that is applied to the conductivity cell. The current flowing through the conductivity cell is proportional to the conductivity of the measured solution. The meter converts the current from a high impedance operational amplifier to a voltage, which is amplified, detected, and filtered by a programmable signal to obtain a potential signal reflecting the conductivity; The microprocessor alternately samples the temperature signal and conductivity signal, and after calculation and temperature compensation, the measured solution is obtainedConductivity value at 25 ℃.
Temperature compensation principle:The conductivity of electrolyte solutions is affected by temperature changes and temperature compensation is necessary. Generally speaking, the temperature coefficient of an aqueous solution is2.00% ℃.
1. Controller maintenance mainly involves cleaning the controller, inspecting its appearance and cables for any damage. The controller is an electronic device, and an unsuitable usage environment may cause damage to the transmitter.
a. Using the instrument in an environment above 60 ℃ may cause damage to the instrument.
b. Incorrect power supply or power fluctuations can cause damage to the instrument.
c. Collisions or drops of instruments can cause damage to the instruments.
d. Moisture, corrosion, and air pollution can cause damage to instruments.
Controller cleaning: Ensure that the controller cover is tightly closed and use a clean damp cloth to wipe the outside of the controller.
Controller inspection: Regularly check whether the instrument is working properly, regularly inspect whether the panel, terminals, switches, buttons, etc. are dirty, and clean and blow them clean if necessary.
2. The conductivity cell needs to be cleaned of dirt in a timely manner. Clean with 50% warm detergent (for strongly adhesive dirt, soak in 2% hydrochloric acid or 5% nitric acid solution), brush with a nylon brush, and rinse the inner and outer surfaces of the electrode repeatedly with distilled water. Remember to touch the electrode with your hands.
3. After starting the power supply, the instrument should display. If there is no display or the display is abnormal, the power should be turned off immediately, and the power supply and fuse should be checked for normal operation.
4. The lead wires of the electrode and the connecting plug at the back of the secondary meter should not get wet, otherwise the measurement will be inaccurate.
5. After high-purity water is poured into the container, it should be measured quickly. Because CO2 in the air will continuously dissolve in water samples to generate highly conductive carbonate ions, the conductivity will continue to increase, and the measured data will be inaccurate.
6. The container of the tested solution must be clean and free from ion contamination.
7. Incorrect use of electrodes often leads to abnormal operation of the instrument. When installing electrodes, they should be completely immersed in the solution.
