Water Hardness Meter

1.Water Hardness Meter Product Introduction

Water Hardness Meter is used to quickly and accurately measure water hardness CaCO3, and the total hardness range of the water sample is up to 1000mg/L.S2 Water Hardness Meter is made of a calcium-magnesium selection electrode based on PVC film.It is used to test the total hardness in water (in terms of CaCO3) with temperature compensation, ensuring that the test is fast, simple, accurate and economical.This user manual introduces the technical parameters, usage and maintenance and communication protocols of the total hardness sensor in detail.

Signal output: RS-485 bus, ModbusRTU protocol, easy to connect to third-party devices such as PLC, DCS, industrial control computers, general-purpose controllers, paperless recording instruments or touch screens.

The patented calcium-magnesium ion electrode, the internal reference liquid penetrates extremely slowly from the microporous salt bridge under a pressure of at least 100 KPa (1Bar).Such a reference system is very stable and has a longer lifespan than that of ordinary industrial electrodes.

Easy to install: 3/4NPT pipe threads for easy sinking installation or installation in pipes and tanks.

IP68 protection level.

2.Water Hardness Meter Technical Parameters

3.Water Hardness Meter Maintenance and Maintenance

1.Use and maintenance

Before testing, the electrode should be soaked in tap water for 48 hours.After activation is completed, clean it in deionized water.The electrode should be stored dry if it is not used for a long time (more than two weeks).The electrode's induction element should be put into the protective cap.

Check whether the terminals are dry.If there is any stain, please wipe with anhydrous alcohol and blow dry before use.Long-term soaking in distilled water or protein solution should be avoided and contact with silicone grease should be prevented.The electrode that has been used for a longer period of time, its PVC membrane may become translucent or contain deposits attached, and it can be rinsed with distilled water (or deionized water).The electrode has a long time to use and when measurement errors occur, corrections must be made.

When the calibration and measurement are still not possible when the electrode is maintained and maintained by the above method, it means that the electrode has failed.Please replace the electrode.

2.Calibration of sensors

Note: The sensor has been calibrated before leaving the factory.If the measurement error is not exceeded, it should not be calibrated at will.

a) Zero point calibration

Put the sensor into the zero-point standard solution, wait for 10 minutes, and wait for the value to stabilize to see if the displayed value is within the error range.If not, zero-point calibration is required.For calibration instructions, refer to the appendix.

b) Slope calibration

Put the sensor into the slope standard solution, wait for 10 minutes, and wait for the value to stabilize to see if the displayed value is within the error range.If not, slope calibration is required.For calibration instructions, refer to the appendix.