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Salinity sensor

Salinity sensor

Model：FT-S7H

Brand：fengtu

Salinity sensor IP68 waterproof grade, RS485 digital interface, support MODBUS protocol, can be directly put into water to ensure long-term stability, reliability and accuracy of the sensor.
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Product details

1.Salinity sensor application environment description

Salinity sensor IP68 waterproof grade, RS485 digital interface, support MODBUS protocol, can be directly put into water to ensure long-term stability, reliability and accuracy of the sensor.It is used for environmental water quality testing and various high/low ionic strength water sample testing, and can meet the requirements of most industrial/environmental applications for online conductivity, salinity, and TDS measurement.

Signal output: RS485 (MODBUS-RTU).

Internal signal isolation technology, strong interference resistance.

Good reproducibility, thermal stability, low drift, small size, fast response

Easy and simple installation, 3/4NPT pipe thread, convenient for submersible installation or installation in pipes and tanks

Stable performance and long service life

IP68 waterproof standard

24*1.218*1.5*228*22

2. Salinity sensor technical performance and specifications

1. Technical parameters

Measurement principleContact method of electrode
Signal modeRS485 (MODBUS-RTU)
Conductivity measurement range0～30000μS/cm 0-30mS/cm
Electrical conductivity resolution1μS/cm 0.01mS/cm
Salinity measurement range0-10000ppm 0-30ppt
Salinity resolution1ppm 0.01ppt
TDS measurement range0-10000ppm 0-30ppt
TDS resolution1ppm  0.01ppt
Measurement accuracy±1.5%; ±0.1°C
Response time约30s(98% still liquid)
Case materialABS
Temperature compensationAutomatic temperature compensation (M1820Z)
Cable lengthStandard 5 meters
Supply voltage12-24VDC (0.4W@12V)
Measuring the environmentTemperature 0~50℃ (no freezing), <0.2MPa
Waterproof gradeIP68
Installation methodImmersed installation, NPT3/4 thread

2.Salinity sensor size chart

Salinity sensor size chart

3. Salinity sensor installation and electrical connection

1.Salinity sensor installation

Salinity sensor installation


Note: The sensor cannot be installed upside down or horizontally, and must be installed at an angle of at least 15 degrees.

2. Electrical installation

The cable is a 4-core shielded wire:

Red - power cord blue/black - ground wire green - 485B yellow - 485A

Depending on the production batch, the color of the cable may be slightly different. Please refer to the cable screen printing for details.

Four. Salinity sensor maintenance and care

1.Use and maintenance

Conventional electrodes require periodic cleaning and calibration, and the maintenance cycle is determined by the customer based on his or her own working conditions. Conventional electrode cleaning method: use a soft brush to remove attachments (be careful to avoid scratching the electrode surface), then clean with distilled water, and then perform calibration operations.



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