Flowserve Gestra NRS 1-50 Steam Boiler Water level Limiter NRS 1-50 24VDC
Supply voltage 24 VDC + / – 20 %, 0.3 A; 100 – 240 VAC +10 / –15 %, 47 – 63 Hz, 0.2 A (optional)
External fuse 0.5 A (semi-delay)
Power consumption 7 VA
Response sensitivity (Electrical conductivity of water at 25 °C) > 0,5 ... < 1000 µS/cm or > 10 ... < 10000 µS/cm
Connection of level electrode 1
input for level electrode NRG 1...-50, NRG 1...-11, NRG 16-36, 4 poles, with screen.
Stand-by input 1 volt-free input, 24 V DC, for monitoring the purging and bypass time.
Max. bypass time: 5 minutes. Safety circuit 2 volt-free make contacts, 6 A 250 V AC / 30 V DC cos ϕ = 1.
Delay of response: 3 seconds, 15 sec. for marine applications.
Provide inductive loads with RC combinations according to manufacturer's specification to ensure interference suppression.
Signal output 1 volt-free output for instantaneous external signalling, 24 VDC, max. 100 mA (semiconductor output).
