The general term for the residual free chlorine and bound chlorine in water after a certain period of contact with chlorine in water.
Residual chlorine can be divided into chemical residual chlorine (referring to compounds of chlorine and ammonia in water, including NH2Cl, NHCl2, and NHCl3, with NHCl2 being more stable and having better bactericidal effects), also known as binding residual chlorine; free residual chlorine (Refers to OC1+, HOCl, Cl2, etc. in water, which have fast sterilization speed and strong sterilization power, but disappear quickly), also known as free residual chlorine; Total residual chlorine refers to the sum of chemical residual chlorine and free residual chlorine.

Principle:
The constant voltage measurement method uses a secondary instrument to continuously and dynamically control the potential between the measuring electrodes, eliminating the influence of the inherent resistance and redox potential of the measured water sample, and enabling the electrode to measure the current signal A good linear relationship is formed between the concentration of the tested water sample, with very stable zero point performance, ensuring accurate and reliable measurement.

The residual chlorine, chlorine dioxide, and ozone in the water sample flowing through the measuring electrode will be consumed, so it is necessary to maintain continuous flow of the water sample through the measuring electrode during measurement. Due to the influence of the resistance and oxidation-reduction potential of the tested water sample, traditional current measurement methods are effective in determining the composition of the tested component It is difficult to maintain a linear relationship between concentration and the current signal generated by the measuring electrode, especially when the concentration of the measured component in the water sample is close to0ppmIn this case, the deviation will be very large, so traditional current measurement methods require frequent calibration of the measuring electrodes, which brings many troubles to users.

characteristic:

Magnetic constant voltage residual chlorine electrode SZ283Simple structure, easy to clean and replace. Due to the consumption of chlorine or ozone content by the current passing through the electrode, users must continuously update the measured liquid by controlling a constant flow rate. So, it is recommended to use a constant current deviceSZ7231perhapsSZ7233Coordinated use.

Magnetic constant voltage residual chlorine electrode SZ283Technical Parameter

Italian MagnetSZ7233Flow channel

This series of constant current devices is specifically designed, manufactured, andSZ283The constant voltage residual chlorine electrode is used in conjunction with it.The function of a constant current device is to stabilize the flow rate of the water sample being measured through a constant voltage residual chlorine measuring electrode. The flow rate of the tested water sample can be adjusted through the regulating valve at the inlet of the constant current device.SZ7233The constant current device is a three hole electrode holder constant current device, which can be installed with oneSZ283Constant voltage electrode and oneSP514In addition to temperature measurement electrodes, corresponding ones can also be installedB&CProduced by the companyPHElectrode andORPOne electrode each.

A set of constant current device components includes the following items:

A.A constant current device(SZ7231perhapsSZ7233)

B.one1/4'hose connector

C.two meters4×6Sampling hose

D.Two wall mounted fixing bolts for constant current devices

maintenance

The reliability of the system depends on the reliability of the sensors. In addition to adjusting the conditions, the cleanliness of the sensor surface during maintenance can affect the accuracy of measurements. Therefore, it is equally important to regularly check whether the sensor surface is clean. If the sensor surface is dirty, it is recommended to perform the following cleaning operations:

Remove the sensor from the constant current device →Immerse the platinum ring of the sensor5%HCLIn solution30second →Remove the sensor and rinse it clean with tap water →Install the sensor back into the constant current device

SZ283Paired with Italian magnetsCL7685Residual chlorine controller,CL7635、CL7335、CL3630Waiting for the residual chlorine detection controller to be used, welcome to call!