Powered Process Signals – TSC-xxx / TSCT-xxx / PSC-TX

The PSC-TX is a powered signal conditioner that can accept inputs from either passive or active mA sources, such as field transmitters, and provides a proportional powered output in mA or V DC. It features true three-port galvanic isolation and delivers true zero output or any standard instrument signal in mA, mV, or V DC.

The TSC-XXX series accepts a wide range of inputs, including mA DC, mV DC, DC volts/current, RTD, TC, and slide wire, and provides a proportional standard instrument output in mA DC or V DC. These mains-powered devices offer full three-port galvanic isolation between input, output, and power supply, ensuring accurate and stable signal transmission with true zero output.

The TSCT-XXX series builds on the TSC-XXX platform by adding a single changeover relay output for high or low alarms, combining precise signal conditioning with alarm functionality. Like the TSC-XXX, TSCT-XXX devices are mains-powered and feature full three-port isolation, delivering reliable and configurable outputs in mA, mV, or V DC.

TSC-xxx and TSCT-xxx

  • Nominal: 120, 220/240 (40-60Hz) +/- 15%
  • 24Vdc (20-32Vdc) 110Vdc

VA Rating: Typically 2VA

Available inputs:

  • ACV Up to 600Vac
  • ACI 1 amp or 5 Amp input
  • mV dc 0-1mV up to 0-1000mV
  • V dc 0-1V, 0-2V, 0-5V, 0-10V
  • mA dc 0-1mA, 0-5mA, 0-10mA, 0-20mA,
  • 0-50mA, 4-20mA, 10-50mA etc
  • Input Impedance Varies with input type
  • Thermocouple J, K, T, R, S,T Range 0 – 1000 Deg. C
  • RTD PT-100, PT-1000 2 and 3 wire.
  • Frequency Switch, Proximity or Frequency,

Output:

  • No 1 (fixed) 0-10Vdc fixed and not isolated from supply.
  • No 2 (selected) 4-20mA etc. (max loop load 900 Ohms)
  • Special Outputs (added cost) Bi-polar output eg:- +10V to -10V for 0-10V Input

PSC-TX

  • Power Supply: 12Vdc, 24Vdc or 48VDC (20 to 70Vdc)
  • VA Rating: Typically 1.6VA

Inputs (connected for either passive or active)

  • V dc input 0-1V, 1-5V, 0-10V, 0-100V
  • mA dc input 0-20mA, 4-20mA (Load 50 ohms)
  • Transmitter drive 4-20mA (drive = 18vdc nom)

Output (two as standard)

  • No 1 (fixed) 0-10Vdc (monitor)
  • No 2 (selected) 4-20mA into 1,000 ohms

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