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Product short description:
  • J, K, T, E, R, S, B Thermocouple Input
  • DC Voltage or DC Current Output
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These models convert sensor inputs to proportional process current or voltage output signals. Excellent accuracy and stability ensure reliable measurements in harsh industrial environments. 3-way isolation. Input, output, and power circuits are isolated from each other.

Models

250T: Loop-powered transmitter series
350T: DC-powered transmitter series
450T: AC-powered transmitter series

Performance Specifications

Input Ranges:
Thermocouple types J, K, T, R, S, E, B
Linearized thermocouple (custom ranges)

Output Ranges:
DC Current: 4 to 20mA
DC voltage: 0 to 5V or 0 to 10V
Power Requirements:
250T: 12 to 50V DC @ 20mA (loop-powered)

350T: DC Voltage Source
Output Range                Power
4 to 20mA               10 to 36V DC @ 30mA
0 to 5V                      10 to 36V DC @ 9mA
0 to 10V                12.5 to 36V DC @ 9mA

450T: 115V or 230V AC, ±10%, 50 to 60Hz
Output Range                 Power
4 to 20mA                  115V AC @ 0.050A
4 to 20mA                  230V AC @ 0.025A
0 to 5V, 0 to 10V       115V AC @ 0.020A
0 to 5V, 0 to 10V      230V AC @ 0.010A

Ambient Temperature Range:
Operating: -13 to 185°F (-25 to 85°C)
Storage: -40 to 185°F (-40 to 85°C)
Accuracy:
±0.1% of calibrated span or ±0.01mV, whichever is greater. Includes repeat-ability, hysteresis, terminal point linearity, and adjustment resolution.
Ambient Temperature Effect:
Less than ±0.01% of output span per °F (±0.018% per °C).
±0.025% of output span per °F (±0.045% per °C) for narrow span units.
(Specification includes the combined effects of zero and span over temperature).
Noise Resistance:
RFI: Less than ±0.5% ,of output span effect.
EMI: Less than ±0.25% of output span effect.
Noise Rejection:
Common Mode: 130dB at 60Hz, 100 ohm unbalance
Normal Mode: 30dB at 60Hz, 100 ohm source
Response Time: Output reaches 98% of output span in 300mS.
Bandwidth: -3dB at 3 Hz, typical
Output Compliance:
250T: RLOAD (max.) = (VSUPPLY – 12V) / 20mA
350T: RLOAD (max.) = (VSUPPLY – 2.5V) / 20mA
450T: RLOAD = 600 ohms
Linearization (-xLxx) Option:
5-segment TC linearizer provides minimum 10 to 1 improvement ±0.1% in the linearity curve.

  • Excellent accuracy and stability ensure reliable measurements in harsh industrial environments
  • Field-selectable input types reduce stocking requirements
  • Thermocouple reference junction compensation reduces drift and corrects non-linearity
  • TC linearizer (5-slope) improves accuracy
  • TC break detection indicates open circuit failures with selectable up/downscale operation
  • RFI and EMI resistance minimize the effects of environmental noise
  • 75% span adjustment enables precise application calibration
  • 1500V AC peak isolation (250V AC or 354V DC continuous) prevents ground loops
    • 250T models: Input isolated from output/power
    • 350T models:Input isolated from output and power. Output and power share a common
    • 450T models: 3-way isolation. Input, output, and power circuits are isolated from each other
  • Operating temperature range: -13 to 185°F (-25 to 85°C)
  • DIN rail G or T mount
  • No certification/approval required
Minimizing Measurement Errors When Making Thermocouple to Transmitter Connections White Paper (Log in to view the file)
How To Prevent Temperature Measurement Errors It will give you a keen understanding of the three basic laws of thermocouples: Homogeneous materials, Intermediate Metals, and Successive/Intermediate Temperatures. It is helpful in weeding out potential sources of error in a thermocouple measurement system.
Temperature Measurement Using Thermocouples White Paper (Log in to view the file)
The Basics of Temperature Measurement Using Thermocouples Choosing a temperature sensor for an application is not as simple as picking a thermocouple type with a compatible temperature range. You must give consideration to the sensor material type, the application temperature range, the relative sensitivity of the sensor, the limitations of its insulation material, and its...

Manuals

250T-TCx User Manual (Log in to download the file)

350T-TCx User Manual (Log in to download the file)

450T-TCx User Manual (Log in to download the file)

Additional information

Weight 16 oz
Dimensions 12 × 13 × 3 in
Part Number

DIN Rail 3.0, DIN Rail 16.7

  • Description

    DIN Rail Strip, Type T

  • Features & Benefits

    • Excellent accuracy and stability ensure reliable measurements in harsh industrial environments
    • Field-selectable input types reduce stocking requirements
    • Thermocouple reference junction compensation reduces drift and corrects non-linearity
    • TC linearizer (5-slope) improves accuracy
    • TC break detection indicates open circuit failures with selectable up/downscale operation
    • RFI and EMI resistance minimize the effects of environmental noise
    • 75% span adjustment enables precise application calibration
    • 1500V AC peak isolation (250V AC or 354V DC continuous) prevents ground loops
      • 250T models: Input isolated from output/power
      • 350T models:Input isolated from output and power. Output and power share a common
      • 450T models: 3-way isolation. Input, output, and power circuits are isolated from each other
    • Operating temperature range: -13 to 185°F (-25 to 85°C)
    • DIN rail G or T mount
    • No certification/approval required
  • Tech Papers

    Minimizing Measurement Errors When Making Thermocouple to Transmitter Connections White Paper (Log in to view the file)
    How To Prevent Temperature Measurement Errors It will give you a keen understanding of the three basic laws of thermocouples: Homogeneous materials, Intermediate Metals, and Successive/Intermediate Temperatures. It is helpful in weeding out potential sources of error in a thermocouple measurement system.
    Temperature Measurement Using Thermocouples White Paper (Log in to view the file)
    The Basics of Temperature Measurement Using Thermocouples Choosing a temperature sensor for an application is not as simple as picking a thermocouple type with a compatible temperature range. You must give consideration to the sensor material type, the application temperature range, the relative sensitivity of the sensor, the limitations of its insulation material, and its...
  • Specs & Data Sheets

    Manuals

    250T-TCx User Manual (Log in to download the file)

    350T-TCx User Manual (Log in to download the file)

    450T-TCx User Manual (Log in to download the file)

  • Accessories

  • Additional information

    Additional information

    Weight 16 oz
    Dimensions 12 × 13 × 3 in
    Part Number

    DIN Rail 3.0, DIN Rail 16.7