| Description de l'article | Level controller 3-POSITION stepping, min- / max-alarm, 4-20MA output / level controller NRR 2-50 connecting level electrode, level transmitter (switch-selectable): 1 input for level electrode NRG 21-.. / NRG 26-21 or 1 analogue input 4-20 MA, e. G. For level transmitter NRGT 26-1. Outputs: 1 volt-free change-over contact for min or max alarm 1 volt-free relay contact for valve open / stop / CLOSED. DE-ENERGIZING DELAY: 3 sec. (Min / max alarm, switch-selectable) 1 analogue output 4-20 MA, max. load 500 ohm, e. G. For actual-value indication. Indicators and adjusters: 1 rotary button with integrated pushbutton "test" for simulating min / max alarm and setting the parameter, 1 seven-segment LED display, four digits, green 2 leds red for min-, max alarm, 2 leds amber for control valve opens/closes 1 four-pole code switch for configuration settings supply voltage: 24 VDC, + / -20 %, 0.1 A |