How do You Connect a Thermocouple to a Transmitter?
When connecting a thermocouple to a transmitter, there are several steps to follow.
The first step is selecting appropriate thermocouples and transmitters. When selecting both components, it is important to have a thermocouple type (J, K, R, S, T, etc.) compatible with the transmitter.
Second, prepare the thermocouple and transmitter by checking the polarity and labeling leads. If leads are not pre-labeled, color codes or markings can be used to identify them.
Third, the thermocouple should be connected to the transmitter. When connecting, start by identifying input terminals, then connect leads and avoid signal interference. The thermocouple’s positive lead should touch the positive input terminal of the transmitter and the negative lead to the negative input terminal.
Fourth, mount the transmitter. This should be done in a location protected from environmental factors such as moisture, dust, and extreme temperatures. NEMA enclosures can help shield the instrumentation from harm.
Fifth, power the transmitter by connecting it to the power source specified by the manufacturer.
Sixth, connect the transfer outputs. Identify output terminals on the transmitter and wire them to the input terminals of the system or unit receiving data.
Seventh and last, calibrate the transmitter. Use a reference temperature source to verify the transmitter’s accuracy.
Acromag provides reliable, high-quality temperature transmitters that work with various thermocouples, RTDs, and thermistor sensors in industrial applications.
Additional Sources:
Acromag – How to use Thermocouples for Temperature Measurement
