250T-AC, 350T-AC, 450T-AC: Loop, DC, or AC-Power Transmitter

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Product short description:
  • Transmitter, Loop, DC, or AC-Power
  • AC Voltage or AC Current Input
  • DC Voltage or DC Current Output

These models convert sensor inputs to proportional process current or voltage output signals.

AC voltage transmitters accept direct voltage inputs. Current models include an external AC current sensor. This toroidal sensor outputs a safe DC milliamp signal which transmits accurately
over long distances. Input span is a function of the primary turns placed on the sensor.

Models

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

Performance Specifications

Input Ranges:
AC Voltage: 50/60Hz, 0 to 150V AC
AC Current: 0 to 20A
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:
±0.5% of calibrated span. 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). (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 (-VAC): 120dB at 60Hz, 100 ohm unbalance.
Common Mode (-CACX): 120dB at 60Hz, 1 ohm unbalance.
Normal Mode: Not Applicable.
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

  • Excellent accuracy and stability ensure reliable measurements in harsh industrial environments.
  • External AC current sensor with DC mA output enables remote mounting of transmitter (for safe monitoring of the AC signal)
  • AC current range is a function of sensor primary turns for easy rescaling in field
  • Factory-calibrated AC current transmitter does not need recalibration
  • RFI and EMI resistance minimize the effects of environmental noise.
  • Compact, 1-inch wide housing uses less space.
  • Low power consumption. (350T as low as 9mA).
  • 1500V AC peak isolation (250V AC or 354V DC continuous) prevents ground loops.
    250T: Input isolated from output/power
    350T:
    Input isolated from output and power.
    Output and power share a common.
    450T:
    3-way isolation
    Input, output, and power circuits are isolated from each other.
  • Operating temperature range: -13 to 185°F (-25 to 85°C)
How to Select the Right Isolator - 8401045
The Ins and Outs of Isolation: A Guide to Selecting the Right Isolator Acromag manufactures a variety of isolators to provide a cost-effective solution for many applications. The primary function of the isolator is to eliminate ground loops that may exist between two or more instruments. A classical application isolates the control room equipment (computers,...
How to Use a Toroidal AC Current Sensor - 8401044
Using Acromag’s Toroidal AC Current Sensor Model 5020-350 Transmitters with DC current input can be used in conjunction with an external toroidal AC current sensor in order to precondition an AC current input signal. This sensor is a highly accurate toroidal instrument transformer; which converts an AC current signal to a safe, low-level, DC milliampere...

Specs & Catalogs

250T-AC, 350T-AC, 450T-AC Data Sheet

Manuals

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

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

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

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

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

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

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    20RM-16-DIN: 19” rack-mount kit with DIN rail

    • 19" rack-mount kit with DIN rail
    Select options
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    5020-350: Toroidal AC Current Sensor

    • AC Current Sensor to precondition an AC current input signal
    • Highly accurate toroidal instrument transformer that converts an AC current signal to a safe, low level, DC milliampere signal (0 to 11.17mA).
    Select options
  • Compare
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    DIN Rail: Type T

    • DIN Rail Strip, Type T
    Select options

Additional information

Weight 16 oz
Dimensions 3 × 1 × 3.2 in
Part Number

250T-VAC-DIN-NCR: 0 to 150V AC, 50/60hz AC voltage input; 12 to 50V DC @ 20mA power; DIN rail G or T mount; no certification/approval required, 350T-VAC-Y-DIN-NCR: Transmitter, 50/60Hz, 0 to 150V AC voltage input; DIN rail G or T mount; no certification/approval required, 450T-VAC-Y-1-DIN-NCR: 50/60Hz, 0 to 150V AC voltage; 4 to 20mA DC output; 115V AC power; DIN rail G or T mount; no certification/approval required, 250T-CACX-DIN-NCR: 0 to 20A AC current input; 12 to 50V DC @ 20mA power; DIN rail G or T mount; no certification/approval required. Unit is factory calibrated for fixed range (adjustable by windings of sensor). Includes 5020-350 sensor, 350T-CACX-Y-DIN-NCR: 0 to 20A AC current input; 4 to 20mA DC output; DIN rail G or T mount; no certification/approval required. Unit is factory calibrated for fixed range (adjustable by windings of sensor). Includes 5020-350 sensor, 450T-CACX-Y-1-DIN-NCR: 0 to 20A AC current input; 4 to 20mA DC output; 115V AC power; DIN rail G or T mount; no certification/approval required. Unit is factory calibrated for fixed range (adjustable by windings of sensor). Includes 5020-350 sensor
Product Series

FlatPack Series

  • Description

    These models convert sensor inputs to proportional process current or voltage output signals.

    AC voltage transmitters accept direct voltage inputs. Current models include an external AC current sensor. This toroidal sensor outputs a safe DC milliamp signal which transmits accurately
    over long distances. Input span is a function of the primary turns placed on the sensor.

    Models

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

    Performance Specifications

    Input Ranges:
    AC Voltage: 50/60Hz, 0 to 150V AC
    AC Current: 0 to 20A
    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:
    ±0.5% of calibrated span. 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). (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 (-VAC): 120dB at 60Hz, 100 ohm unbalance.
    Common Mode (-CACX): 120dB at 60Hz, 1 ohm unbalance.
    Normal Mode: Not Applicable.
    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

  • Features & Benefits

    • Excellent accuracy and stability ensure reliable measurements in harsh industrial environments.
    • External AC current sensor with DC mA output enables remote mounting of transmitter (for safe monitoring of the AC signal)
    • AC current range is a function of sensor primary turns for easy rescaling in field
    • Factory-calibrated AC current transmitter does not need recalibration
    • RFI and EMI resistance minimize the effects of environmental noise.
    • Compact, 1-inch wide housing uses less space.
    • Low power consumption. (350T as low as 9mA).
    • 1500V AC peak isolation (250V AC or 354V DC continuous) prevents ground loops.
      250T: Input isolated from output/power
      350T:
      Input isolated from output and power.
      Output and power share a common.
      450T:
      3-way isolation
      Input, output, and power circuits are isolated from each other.
    • Operating temperature range: -13 to 185°F (-25 to 85°C)

  • Tech Papers

    How to Select the Right Isolator - 8401045
    The Ins and Outs of Isolation: A Guide to Selecting the Right Isolator Acromag manufactures a variety of isolators to provide a cost-effective solution for many applications. The primary function of the isolator is to eliminate ground loops that may exist between two or more instruments. A classical application isolates the control room equipment (computers,...
    How to Use a Toroidal AC Current Sensor - 8401044
    Using Acromag’s Toroidal AC Current Sensor Model 5020-350 Transmitters with DC current input can be used in conjunction with an external toroidal AC current sensor in order to precondition an AC current input signal. This sensor is a highly accurate toroidal instrument transformer; which converts an AC current signal to a safe, low-level, DC milliampere...

  • Specs & Data Sheets

    Specs & Catalogs

    250T-AC, 350T-AC, 450T-AC Data Sheet

    Manuals

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

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

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

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

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

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

  • Accessories

    • Compare
      Compare

      20RM-16-DIN: 19” rack-mount kit with DIN rail

      • 19" rack-mount kit with DIN rail
      Select options
    • Compare
      Compare

      5020-350: Toroidal AC Current Sensor

      • AC Current Sensor to precondition an AC current input signal
      • Highly accurate toroidal instrument transformer that converts an AC current signal to a safe, low level, DC milliampere signal (0 to 11.17mA).
      Select options
    • Compare
      Compare

      DIN Rail: Type T

      • DIN Rail Strip, Type T
      Select options

  • Additional information

    Additional information

    Weight 16 oz
    Dimensions 3 × 1 × 3.2 in
    Part Number

    250T-VAC-DIN-NCR: 0 to 150V AC, 50/60hz AC voltage input; 12 to 50V DC @ 20mA power; DIN rail G or T mount; no certification/approval required, 350T-VAC-Y-DIN-NCR: Transmitter, 50/60Hz, 0 to 150V AC voltage input; DIN rail G or T mount; no certification/approval required, 450T-VAC-Y-1-DIN-NCR: 50/60Hz, 0 to 150V AC voltage; 4 to 20mA DC output; 115V AC power; DIN rail G or T mount; no certification/approval required, 250T-CACX-DIN-NCR: 0 to 20A AC current input; 12 to 50V DC @ 20mA power; DIN rail G or T mount; no certification/approval required. Unit is factory calibrated for fixed range (adjustable by windings of sensor). Includes 5020-350 sensor, 350T-CACX-Y-DIN-NCR: 0 to 20A AC current input; 4 to 20mA DC output; DIN rail G or T mount; no certification/approval required. Unit is factory calibrated for fixed range (adjustable by windings of sensor). Includes 5020-350 sensor, 450T-CACX-Y-1-DIN-NCR: 0 to 20A AC current input; 4 to 20mA DC output; 115V AC power; DIN rail G or T mount; no certification/approval required. Unit is factory calibrated for fixed range (adjustable by windings of sensor). Includes 5020-350 sensor
    Product Series

    FlatPack Series