DIN Rail Pre-Amplifier

The PA7 and PA8 Series preamplifiers provide the functionality of our standard preamplifiers in a convenient DIN Rail enclosure for easy mounting and installation. Versions are offered for both Variable Reluctance (Mag) as well as RF sensor input. Models include the most popular pulse output options.


Input Power

  • Voltage: 8 to 30 VDC
  • Current draw: 50mA MAX.
  • Reverse polarity protected

RF Sensor Input

  • Modulation carrier frequency: 25 KHz
  • Input frequency: 2 Hz to 5 KHz
  • Preferred coil inductance: 1.0 mH +/- 10%
  • Max. distance from sensor to amplifier: 100′

VR Sensor Input

  • Input protected, RF and band pass filtered
  • Input frequency: 2 Hz to 10 KHz, user-adjustable trigger level to eliminate false pulsing
  • Input impedance: 40K ohms (nominal)
  • Max. input signal: 60.0 V RMS
  • Max. distance from sensor to amplifier: 100′

Pulse Output Options

  • Open Collector
  • TTL/CMOS: (0-5 VDC square wave)
  • 0 to 10 VDC square wave
  • Supply Tracking; Logic 0 <= 0.4 VDC; Logic 1 >= V Supply – 0.2 VDC
    For additional output options contact us.

Temperature Range
Operating: -40°F to +185°F (-40°C to +85°C)

Units that operate to 105°C are also available.

Electrical Connections
Screw terminals suitable for 24 to 12 AWG wire

NS 35/7.5 and NS 35/15 DIN-Rail

Suitable Sensors

CE compliant to EMC Directive 2004/108/EC for use in residential, commercial, light industrial and heavy industrial environments

Unconditional one (1) year warranty if used within specifications

PA7-1DNRF, 5V DIN Mount
PA7-2DNRF, 10V DIN Mount
PA7-3DNRF, O.C. DIN Mount
PA7-4DNRF, Supply Tracking DIN Mount
PA8-1DNMAG, 5V DIN Mount
PA8-2DNMAG, 10V DIN Mount
PA8-3DNMAG, O.C. DIN Mount
PA8-4DNMAG, Supply Tracking DIN Mount