ExTox GAS ALERT CENTER ET-4D2

The ET-4D2 is the ideal choice for tightly limited measurement tasks where the focus is on reliable warning of dangers while maintaining a favorable cost level.

Features

Number of transmitters:

  • 1 to 4 (4-20mA)

Signal evaluation:

  • Microcontroller with A/D converter

Alarm/fault/display:

  • Illuminated graphic display (160 x 80) for showing measured values, messages and alarms
  • 12 (3 x 4) red LEDs for alarm indication
  • LEDs for displaying channel faults (4 x yellow), channel operation (4 x green), central operation (1 x green), central fault (1 x yellow)

User Interface:

  • Menu-driven system via graphic display and button
  • Fully configurable on the device without any tools
  • 3 password-protected operating levels

Alarm evaluation:

  • 3 freely adjustable alarm thresholds per channel
  • Monitoring: exceeding, falling below or min./max.
  • Configurable latching of each alarm

Relay, potential-free:

  • 12 changeover contacts 230 V / 5 A (total switching current: max. 10 A), freely configurable with alarms 1 to 3 and transmitter fault
  • 2 changeover contacts 230 V / 5 A for maintenance mode and device malfunction

Additional functions:

  • Zero point and sensitivity adjustment of the measuring channels
  • RS 232/RS 485 interface for communication with external peripherals (PC or PLT system)
  • Key switch function (maintenance mode)
  • Horn reset
  • New value alert
  • 4 digital inputs, floating
  • 4 analog outputs 4-20 mA/0-10 V, floating (only ET-4DA2)

Operating temperature:

  • -10 °C to +40 °C, humidity: non-condensing

Storage Temperature:

  • -25 °C to +60 °C, humidity: non-condensing

Know-How Article