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Water quality control

System conductivity control and automatic injection of chemical can be done by one controller

Cooling tower conductivity controller TC-300

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Cooling tower conductivity controller TC-300
Immersion sensor
Immersion sensor

In-line sensor, In-line holder
In-line sensor, In-line holder

 • The system to control the quality of cooling water of cooling tower employs a conductivity sensor to control solenoid valve and chemical injection pump.

• The system equips blowdown control function.

• A variety of chemical injection control is available thanks to timer function.


Controller common specification
Measuring range Conductivity: 0 to 400 mS/m, Temperature: 0 to 50.0˚C
Power voltage AC90V to AC240V 50/60Hz 25VA
Input Sensor input Conductivity: 0 to 400 mS/m
Temp. input Temperature: 0 to 50.0˚C (Pt1000Ω) Auto temp. compensation
Operation signal input Potential free 1a x1 (Blow down valve output and pump output are controlled.)
Level switch input Potential free 1a x1
Output Combined alarm output • Upper limit alarm: 0 to 399 mS/m
• When level switch is ON
• When sensor is abnormal (Potential free 1a x1 AC250V 10A Resistance load)
Transfer output DC4 to 20mA Load resistance 500Ω or below, insulation type
Function Manual calibration Calibration according to cell constant (Optional setting is possible.)
Error message Error beyond measuring range
• Magnetic drive pumps
• Metering pumps
& dosing pumps
• Pneumatic drive pumps
• Air pumps
• Gear pumps
• Turbine pumps
• Screw pumps
• Water quality control

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