Conductivity 4-20mA transmitter

Functionality of a Conductivity Transmitter:

A conductivity transmitter functions by leveraging a conductivity sensor. This conductivity sensor consists of two electrodes, and the conductivity transmitter measures the electrical conductivity between them. Using a 2-wire current loop communication process, the transmitter translates the measurement into a 4-20mA output.

For instance, if the conductivity sensor is immersed in saltwater, a good conductor, it registers high conductivity due to the effortless flow of current between the electrodes. Conversely, when the sensor is placed in purified water, which lacks good conductive properties, the transmitter records low water conductivity.

The precision of these conductivity measurements significantly hinges on the quality of the conductivity sensor. While our conductivity transmitter can be paired with any conductivity sensor, we always suggest using our high-quality sensors to achieve the best results.

Where to Use a Conductivity Transmitter:

Conductivity transmitters find extensive use in water treatment facilities. In such settings, the water conductivity measurements are collected by a central processing unit that manages the system. Thus, there is no need for the actual measured values to be displayed on the transmitter.

Notable Features:

• Cable capacity compensation

• 4 to 20 mA analog signal output

• TS-35 DIN rail mounting

• +/-0.1% accuracy

• IP20 protective casing

• Screw terminals

• Electrically isolated input, output, and supply for safety

• Power LED

• Cyclical self-calibration

• WiFi module for easy configuration.

Selecting the Suitable Conductivity Sensor:

When it comes to measuring water conductivity, it’s essential to choose the right conductivity sensor. This choice relies on understanding the details of your project, such as the expected water conductivity levels, temperature variations, and the sensor’s intended location.

One key factor to consider when selecting between sensors is the cell constant, or K factor. This value describes the probe’s geometry, informing you about the type of liquids it can accurately measure.

For example, sensors with a low cell constant, indicating small distances between conductor surfaces, are ideal for measuring pure and ultrapure water. On the other hand, sensors with a larger cell constant, offering more significant sensing surfaces and allowing more liquid, are suited for liquids expected to have higher conductivity than pure water. By taking into account these factors, you can confidently select the right cell constant probe for your water treatment needs.