Showing all 10 results
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DT233: Thermocouple / milliVolt Input Two-Wire Dual Transmitter
- Dual channels
- Universal thermocouple, mV input
- 4-20mA outputs (sink/source)
- 7-32V DC loop/local
Click here to watch a short video highlighting the features of the DT233.
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DT333: Thermocouple / milliVolt Input Four-Wire Dual Transmitter
- Dual channels
- Universal thermocouple, mV inputs
- Isolated current or voltage outputs
- 6-32V DC local/bus power
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TT233: Thermocouple / milliVolt Input Two-Wire Transmitter
- Universal TC type J, K, T, R, S, E, B, N or ±100mV input
- 4-20mA ouput (sink/source)
- 12-32 V DC loop/local power
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TT333: Thermocouple / milliVolt Input Four-wire Transmitter
- Universal thermocouple / millivolt input
- Universal current / voltage output
- 12-32V DC local / bus power
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VPM3000 Series: Universal Transmitter / Alarm with Display
- Big, bright display
- 4-20mA, ±10V, thermocouple, or RTD input
- 4-20mA, Modbus serial, or alarm relay output options
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655T, 656T: Single or Dual Channel, Thermocouple/milliVolt Input, Loop-powered Transmitter
- TC (types J, K T, R, S, E, B, N), ±1V DC, selectable range/type input
- 4 to 20mA DC output
- 12-50V DC from output loop power
- DIP-switch configuration, signal linearizer, push-button calibration
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801T: Universal Input Intelligent Temperature Transmitter
- Thermocouple, RTD, milliVolt, and Resistance Input
- 0 to 20mA DC, 0 to 10V DC output
- Limit Alarm
- 10-36V DC power
- Software configured
- Performs linearization, square root extraction, and optional limit alarm functions
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ST132: Thermocouple/milliVolt Input Head-mount Transmitter
- Universal thermocouple (8 types) or ±100mV input
- 4-20mA output
- Loop-powered, 7-32V DC
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ST133: Isolated Transmitter; Thermocouple/mV Input
- TC type J, K, T, R, S, E, B, and N or ±100mV input
- 1500V isolation
- 4 to 20mA DC output
- USB-configured
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250T-TC, 350T-TC, 450T-TC Loop, DC, or AC-Power Transmitter
- J, K, T, E, R, S, B Thermocouple Input
- DC Voltage or DC Current Output
Thermocouple Temperature Transmitters - Continued

Points of Consideration When Using Thermocouples to Measure Temperature
Thermocouples work by measuring the voltage produced by the junction of two different metals. The voltage produced is proportional to the temperature difference between the two metals, and this voltage can be measured and used to determine the temperature at the junction.
However, there are several sources of error that can affect the accuracy of thermocouple temperature measurements, including the reference junction temperature, lead wire resistance, cold junction compensation, thermal EMF, thermal conductivity, and self-heating.
It is important to consider these potential sources of error and take steps to minimize them in order to achieve accurate temperature measurements using thermocouples.
In some cases, it may be necessary to use another type of temperature sensor, such as an RTD transmitter, in order to achieve the desired accuracy.
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
- Response Time
- Cold Junction Compensation
- Connection Problems
- Thermal Shunting and Immersion Error
- Lead Resistance
- Noise
- Common-Mode Voltage
Download Temperature Measurement Using Thermocouples Industry Technology Paper for more information.