The DT233 model is a dual two-wire transmitter that isolates and converts millivolt or thermocouple sensor inputs to proportional 4-20mA control signals. Power is received from the output loop current.
The ST132 is a low-cost two-wire transmitter that converts a millivolt or thermocouple sensor input to a proportional 4-20mA control signal. Power is received from the output loop current. The transmitter performs signal linearization, cold-junction compensation, and lead-break detection functions.
TC type J, K, T, R, S, E, B, and N or ±100mV input
4 to 20mA DC output
The ST133 is a low-cost two-wire transmitter that isolates and converts a millivolt or thermocouple sensor input to a proportional 4-20mA control signal. Power is received from the output loop current. The transmitter performs signal linearization, cold-junction compensation, and lead-break detection functions.
Points of Consideration When Using Thermocouples to Measure Temperature
Thermocouples work by the temperature difference between one end of a conductor and the other end that produces the small electromotive force (emf), or charge imbalance, that leads us to the temperature difference across the conductor.
Since accuracy will ultimately play a significant role in selecting a sensor type, we should be familiar with potential sources of error when making temperature measurements with thermocouples. Some of these considerations may steer us from one T/C type to another, or perhaps to another sensor type, like RTD transmitters for example.
12 Points to Consider When Using Temperature Thermocouple Transmitters
Thermocouple Sensor Inaccuracy
Thermocouple Sensor Non-Linearity
Thermocouple Sensor Sensitivity
Sensor Drift, Aging, and De-Calibration
Choice of Extension Wire
Cold Junction Compensation
Thermal Shunting and Immersion Error
website. Learn More
Stay Up To Date With Acromag
Join thousands of other industry professionals. Keep up to date with the latest new products and white papers. Don’t miss out!
You have successfully subscribed to the newsletter
There was an error while trying to send your request. Please try again.