Features of control unit ET-D(A):

  • Number of Transmitters: 1 to 4 (4-20 mA)
  • Signal Processing: Microcontroller with A/D-Converter
  • Alarm/Fault/Indication:
    Illuminated graphic display (160 x 80) for indication of measured values, messages and alarms
    12 (3 x 4) red LEDs for alarm indication
    LEDs for indication of channel fault (4 x yellow), channel operation (4 x green), operation (1 x green), device fault (1 x yellow)
  • User Interface:
    Menu guided system via graphic display and keys
    Completely configurable at device, no tools needed
    3 password protected servicing levels
  • Alarm Evaluation:
    3 freely adjustable alarm levels per channel
    Monitoring: over-scale, under-scale or min/max
    Latching of each alarm configurable
  • Relays, potential free:
    12 change-over contacts 230 V / 5 A (total power consumption: max. 10 A), freely configurable with Alarm 1 to 3 and transmitter fault
    2 change-over contacts 230 V / 5 A for maintenance mode and device fault
  • Additional Features:
    Adjustment of zero point and sensitivity of measuring channels
    RS 232/RS 485-Interface for communication with external periphery (PC or PLT-System)
    Key switch function (maintenance mode)
    Horn reset
    Alarm reactivation
    4 Digital inputs, potential free
    4 Analog outputs 4-20 mA/0-10 V, potential free (only ET-4DA2)
  • Operation Temperature:
    -10 °C to +40 °C, Humidity: non condensing
  • Storage Temperature:
    -25 °C to +60 °C, Humidity: non condensing
  • Options:

ProfiBus, ModBus, Ethernet connection, Visualisation ET-View, …(with integrated ProfiBus DP-Module: ET-4DP2, 24 V (Art. 315010))

  • Types:

230VAC or 24VDC
Wall mounted housing
DIN rail
Control panel
19” Rack


Service of stationary gas detectors:
SafeTech service department will perform for you the design, installation and maintenance services of the measurement center and heads. Our technicians will be happy to help you in practice and answer all your questions.


Gas detection Control unit ET-8D, 4D(A) manual
Centrala sterująca ET 8D