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

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$475 – $525

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Product short description:
  • 0 to 25.6KHz frequency input range
  • DC voltage or DC current output
  • DIN rail G or T mount
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These transmitters accept periodic or pulse waveform signals such as those originating from tachometers, magnetic transducers, and turbine flow meters, and provide a proportional process current or voltage output signal.

Models

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

Performance Specifications

Input Ranges:
Frequency: span ranges 0 to 25.6KHz, field-selectable, direct coupled inputs, ±25mV to 150V RMS
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. 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: 115dB at 60Hz, 100 ohm unbalance
Normal Mode: Not Applicable
Response Time:
Time for output to reach 98% of output span depends on jumper-selectable frequency range.
Range 1: 8.0 sec response time (98%)
Range 2: 5.0 sec response time (98%)
Range 3: 0.4 sec response time (98%)
Bandwidth: -3dB at 25,600Hz, 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
  • RFI and EMI resistance minimize the effects of environmental noise
  • 90% span adjustment enables precise application calibration
  • Quartz crystal time-base design improves temperature performance
  • Field-selectable time constants optimize output response time and ripple characteristics
  • Selectable threshold circuits accept uni-polar/bipolar inputs (0V bipolar, 1.5V unipolar)
  • Excitation/pull-up circuit adds flexibility
  • 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)

Specs & Catalogs

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

Manuals

250T-FQ1 User Manual (Log in to download the file)

350T-FQ1 User Manual (Log in to download the file)

450T-FQ1 User Manual (Log in to download the file)

Additional information

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

250T-FQ1-DIN-DT1: CSA approval, Div. 2 hazardous locations, 250T-FQ1-DIN-NCR: no certification/approval required, 350T-FQ1-V0-DIN-NCR: 0 to 10V DC output; no certification/approval required, 350T-FQ1-V5-DIN-NCR: 0 to 5V DC output; no certification/approval required, 350T-FQ1-Y-DIN-NCR: 4 to 20mA DC output; no certification/approval required, 450T-FQ1-Y-1-DIN-NCR: 4 to 20mA DC output; 115V AC power; no certification/approval required
Product Series

FlatPack Series

  • Description

    These transmitters accept periodic or pulse waveform signals such as those originating from tachometers, magnetic transducers, and turbine flow meters, and provide a proportional process current or voltage output signal.

    Models

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

    Performance Specifications

    Input Ranges:
    Frequency: span ranges 0 to 25.6KHz, field-selectable, direct coupled inputs, ±25mV to 150V RMS
    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. 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: 115dB at 60Hz, 100 ohm unbalance
    Normal Mode: Not Applicable
    Response Time:
    Time for output to reach 98% of output span depends on jumper-selectable frequency range.
    Range 1: 8.0 sec response time (98%)
    Range 2: 5.0 sec response time (98%)
    Range 3: 0.4 sec response time (98%)
    Bandwidth: -3dB at 25,600Hz, 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
    • RFI and EMI resistance minimize the effects of environmental noise
    • 90% span adjustment enables precise application calibration
    • Quartz crystal time-base design improves temperature performance
    • Field-selectable time constants optimize output response time and ripple characteristics
    • Selectable threshold circuits accept uni-polar/bipolar inputs (0V bipolar, 1.5V unipolar)
    • Excitation/pull-up circuit adds flexibility
    • 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)

  • Specs & Data Sheets

    Specs & Catalogs

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

    Manuals

    250T-FQ1 User Manual (Log in to download the file)

    350T-FQ1 User Manual (Log in to download the file)

    450T-FQ1 User Manual (Log in to download the file)

  • Accessories

  • Additional information

    Additional information

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

    250T-FQ1-DIN-DT1: CSA approval, Div. 2 hazardous locations, 250T-FQ1-DIN-NCR: no certification/approval required, 350T-FQ1-V0-DIN-NCR: 0 to 10V DC output; no certification/approval required, 350T-FQ1-V5-DIN-NCR: 0 to 5V DC output; no certification/approval required, 350T-FQ1-Y-DIN-NCR: 4 to 20mA DC output; no certification/approval required, 450T-FQ1-Y-1-DIN-NCR: 4 to 20mA DC output; 115V AC power; no certification/approval required
    Product Series

    FlatPack Series