Conductivity and temperature transmitter

The LSP-TCT-WIFI conductivity and temperature transmitter is designed to measure the conductivity, resistivity and temperature of the liquids with the corresponding sensor. This instrument is suitable for high-purity water monitoring and other water treatment applications, such as reverse osmosis or ion exchangers. With its DIN rail mountable housing, it is easy to install into industrial environments. Configuration of the parameters can be easily done by accessing the device’s built-in web-server through its WiFi connection.

It offers an extensive feature set including:

•  Convenient Wi-Fi connection for streamlined configuration
•  MODBUS protocol
•  Precise conductivity, resistivity, and temperature measurements
•  Adjustable signal outputs for both conductivity and temperature (0 -20mA; 4-20mA; 0-24mA; 0-10V)
•  Digital output Relay with a customizable switching point
•  Automated self-calibration for optimal accuracy
•  Linear temperature compensation
•  Electric isolation of input, output, and power supply
•  DIN rail mounting for flexible installation
•  Resisitivity compensation of the cable
•  Cell constant calibration

The video below you can see how to wire up, and configure the device:

The MODBUS feature

Since this Conductivity and temperature transmitter has MODBUS communication possibility, you can easily track the measured values via RS485. You only need 2 wires from the transmitter to your computer to process the data. Watch the video below, how to wire and set up the MODBUS communication using an RS485/USB converter (Turn on the subtitles). We recommend using our RS485/USB converter which doesn’t need any external power supply.

How to choose your conductivity probe for your application?

Understanding the selection of your conductivity probe for your application is crucial. Water conductivity is an indicator of the water’s ability to conduct electrical currents, influenced by various ionized substances in the solution. Typically, conductivity measurements factor in temperature compensation.

When choosing the right probe, consider the specifics of your project.

Will you be working with high or low conductivity?

Will the temperature vary?

Where will you use the probe?

These considerations guide you to the most suitable option.

A pivotal aspect of probe selection is the cell constant, or K factor, which characterizes the geometry of the probe and informs us about which liquids the probe can effectively measure. Low cell constant probes, which allow smaller amounts of liquid to be measured due to their closely placed conductor surfaces, are generally used for pure and ultra-pure water. Probes with larger cell constants have a bigger distance between the cells, allowing more liquid to enter. These are primarily used where the expected conductivity is higher.

The following table will aid you in determining the cell constant probe that best fits your needs. Remember, the LSP-TCT-WIFI temperature transmitter is not just a device, it’s a comprehensive solution for your water treatment and monitoring needs.

For further specialization, you may be interested in our Conductivity Transmitter or our Temperature Transmitter.