Water ions sensor

[0014] As shown in the drawings, the water ion sensor of the present invention uses two conventional electrodes 1 with a positive electrode and a negative electrode. In order to weld the electrode 1 and the wire 3 to reduce the contact resistance, a transition metal 2 is welded at the connecting end of the electrode 1 and the wire 3, one end of the transition metal 2 is welded to the electrode 1, and the other end is welded to the wire 3. In order to reduce the influence of interference on the accuracy of the sensor, a conversion module 4 is added. The analog input end of the conversion module 4 is connected to the other end of the wire 3, so that the analog signal collected by the electrode 1 is converted into a strong anti-interference energy, which can be transmitted over a long distance, and can be easily interfaced with the digital signal of the upper computer or the instrument. Analog standard signal. The output end of the conversion module 4 is connected to a wire 8, and a digital signal is output through the wire 8. In order to further reduce the influence of interference on the accuracy of the sensor, one end of the shielding layer 7 of the wire 8 that outputs the signal is connected to the metal shielding shell 5 inside the shell 6.

[0015] The conversion module 4 converts the collected analog signal into at least one of the following digital interface and standard analog signal: RS485 communication interface, RS232 communication interface, RS422 communication interface, Ethernet communication interface, USB communication interface, binary signal Interface, voltage type standard analog signal, current type standard analog signal.

[0016] The casing is made of epoxy resin material with high strength, low shrinkage rate, long-term hydrolysis resistance and high insulation strength, so that the distance between the two electrodes can be precisely positioned.

[0017] The above-mentioned embodiments can be changed without departing from the scope of the present invention. Therefore, the structures included in the above description and shown in the drawings should be regarded as illustrative rather than limiting the protection scope of the present invention.