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Alarm Module


Alarm Module | PHA52

Alarm Module

  • 40 Month Shelf Life
  • Adds Alarm Relay Capability to Common Analog Outputs
  • Ideal for Use with Two Wire Transmitters
  • Independent Setpoint and Dead Band Controls for Each Relay
  • Relays Energize on Increasing or Decreasing Input Value-Switch Selectable
  • NEMA 4X Gasketed Enclosure Provides Watertight Protection

    Loop Powered Isolator
  • Prevents Ground Loops
  • Transformer Isolated
  • Virtually Zero Temperature Drift


The PHA-52 dual alarm modules provide an ideal way to add alarm capability to a control system loop. The module’s two relays each have setpoint and deadband controls and an LED to indicate on/off relay status. Relay phasing switches individually select each relay to operate in response to increasing or decreasing input signal value. For compatibility with many systems, input levels are user selectable. The PHA-52 accepts 0 to 50 mV, 0 to 100 mV, 0 to 5 Vdc.

For complete product specifications see the Related Links section at the bottom of this page.
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Dual alarm module 0-50/0-100 mV input
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