ExTox GAS ALERT CENTER ET-4D2

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