The 260A accepts a 4 to 20mA input signal and provides a dry contact relay output if the input exceeds a user-defined set-point limit. Power is received from the input loop. These alarm relays are ideal for local fail-safe alarming with existing process transmitters. They are easily installed on a process loop because they do not require an additional power supply and feature a very low voltage burden. A long list of features allows the 260A to adapt to most applications.

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  260A: Limit Alarm; DC Current Input, Loop-Powered

  • 4 to 20mA DC input
  • Single mechanical relay output
  • 4.5V DC from input loop power
  • Hi/lo fail-safe option trips alarms above or below set-point

  $405

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  270i: Isolator; Input Loop Power

  • 4-20mA DC input
  • 4-20mA DC output
  • 1500V AC peak isolation DC prevents ground loops

  $450 – $645

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  340i: Isolator; DC-Powered

  • 4 to 20mA DC input
  • 4 to 20mA DC output
  • 10-36V DC power
  • 1500 AC peak isolation prevents ground loops
  • Calibration is independent of the load to eliminate load compensation adjustments

  $415

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  361A, 461A: Limit Alarm; DC Voltage/Current Input, AC or DC-Powered

  • 0 to 20mA DC, 0 to 100V DC, AC current (with optional sensor) input
  • Single or dual mechanical relays output
  • 10-36V DC or 115/230V AC power
  • 100% adjustable set-point, hi/lo fail-safe operation, jumper-selectable voltage/current input

  $380 – $385

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  250T-DC, 350T-DC, 450T-DC: Analog Transmitter; AC-, DC- or Loop-Powered, DIN Rail-Mount

  • DC voltage or DC current input
  • DC voltage or DC current output
  • Loop or DC or AC power
  • Excellent accuracy and stability ensure reliable measurements in harsh industrial environments. Input isolated from output/power

  $405 – $450

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

  • 0 to 25.6KHz frequency input range
  • DC voltage or DC current output
  • DIN rail G or T mount

  $415 – $460

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  250T-RB, 350T-RB, 450T-RB Transmitter; Loop, DC, or AC-power

  • Platinum RTD or copper RTD (resistance temperature sensor) input
  • DC voltage/current output

  $415 – $485

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

  • J, K, T, E, R, S, B thermocouple input
  • DC voltage or DC current output

  $420 – $495

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

  • Transmitter, Loop, DC, or AC-Power
  • AC voltage or AC current input
  • DC voltage or DC current output

  $440 – $535

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  330i: Isolator; DC-Powered

  • 4 to 20mA DC input
  • 4 to 20mA DC output
  • 10-36V DC power
  • Three-way isolation

  $415

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  430i: Isolator, AC-Powered

  • 4 to 20mA DC input
  • 4 to 20mA DC output
  • 115V AC or 230V AC power
  • Three-way isolation
  • Zero and span adjustment enable precise calibration

  $415

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  250T-P, 350T-P, 450T-P: Isolated Transmitter; Potentiometer/Slidewire Input

  • Loop, DC, or AC-powered
  • DC voltage or DC current output
  • Resistance: 100 to 10,000 ohm three-wire pot/slidewire

  $405 – $460

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