Dimens 6501C Online Conductivity/RES/TDS

Dimens 6501C Online Conductivity/RES/TDS Sensor

The Dimens 6501C Conductivity Controller is the ultimate solution for water treatment and industrial process control. Paired with the innoSens 320/330 conductivity electrode, it offers precise measurement of conductivity, resistivity, TDS, and temperature. With a user-friendly interface in both Chinese and English, automatic temperature compensation, standard 4-20mA/RS485 Modbus, and relay control functions, it's a reliable choice.

Key Features:

  • User-friendly large-screen backlit LCD display for easy reading.
  • Economical and practical design.
  • 4-20mA output for versatile connectivity.
  • RS485 Modbus RTU communication for data management.
  • Two independent Hi/Lo alarm relay outputs for added security.
  • Automatic temperature compensation ensures accuracy.
  • Wide power supply design (90-260VAC) for flexibility.
  • IP65 protection and options for panel or pipe installation.


  • Untreated water.
  • Drinking water.
  • Ultrapure water.
  • Demineralized water.

Choose the Dimens 6501C Conductivity Controller for precise control and monitoring in various water treatment and industrial processes. Your pathway to reliability and efficiency.

Measurement Parameters

  • Conductivity: 0.00-2000mS/cm
  • Resistivity: 0-20.00MΩ*cm
  • TDS: 0-99900ppm


  • Measuring sensor: Dimens 320/330 Conductivity Sensor
  • Temperature probe: Pt1000 / NTC 30K (optional)


  • Analog Output 1: 4-20 mA isolated current output for conductivity, resistivity, TDS, adjustable within the measuring scale

Relay 1&2 (Alarm)

  • Operation: ON/OFF
  • Selectable action: High / Low
  • Set Points: High/10.00mg/L; Low/4.00mg/L (adjustable)
  • Hysteresis: 0.10mg/L (adjustable)
  • Relay contacts: 5A/250VAC; 5A/30VDC


  • RS 485 Modbus RTU
  • Baud rate: 9600 bps
  • Data format: 8 bit

General Information

  • Resolution: 0.01/0.1/1 uS/cm (mS/cm), 0.01 MΩ*cm, 1 ppm
  • Accuracy: ±1% f.s.
  • Temperature Compensation: Pt 1000/NTC 30K
  • Temperature Compensation Range: -10.0~120.0ºC
  • Working Temperature: 0~70.0°C
  • Storage Temperature: -20~70.0°C
  • Display: Backlit lattice LCD display
  • Analog Output: Isolated 4-20mA output, customizable, maximum load 500Ω
  • Communication: RS485 Modbus RTU (Baud rate: 9600)
  • Alarm Output: 2 sets of ON/OFF contacts, independently adjustable Hi/Lo alarm points with hysteresis, 5A/250VAC, 5A/30VDC
  • Password: Setting mode: 0022, calibration mode: 0011
  • Language: English/Chinese
  • Power Supply: 90-260VAC, 50/60Hz; 24VDC optional
  • Protection Grade: IP65
  • Installation Type: Panel/pipe mounting
  • Dimensions: 108 x 108 x 145mm
  • Opening Hole Size: 92 x 92mm
  • Weight: 0.6Kg