CONTROLS CONTROLS NRU SERIES LIQUID LEVEL CONTROL PUMP UP UL listed CSA recognized LED Relay Indicator Three Styles Pump Up Control 4.7 k to 100 k Sensitivity 10 Amp SPDT Relay Control of conductive liquids (tap water, sea water, sewage, S chemical solutions, coffee, ice cream, etc.) Max min LEVEL The relay is energized when the level falls below the low level 5 R probe. It de-energizes when the high level probe is reached. The NRU will also control a single level. In this case, a single S probe is used and the relay operates when the probe is not immersed. The Max terminal is connected to common with a LEVEL jumper. R In either case, a common electrode is needed if the container 0 t is non-conductive. SPECIFICATIONS: WIRING DIAGRAM: Input Power .24, 48, 110, 220 VAC, 15% (50/60 Hz) Maximum voltage .24 VAC: 1.5 VA 48 VAC: 1.7 VA DNRU PNRU LNRU 110 VAC: 2 VA 220 VAC: 2 VA S S S Output .SPDT Relay Max C min C Max min Contact material .AgCdO Maximum loading 10A AC resistive 8A DC resistive Maximum switching voltage 250 VAC 250 VDC 6 min Max 45 A1 11 C 7 5 Maximum power rating 2500 VA 80 W 4 8 3 6 5 R Electrical life 2 x 10 at 2200 VA resistive load 3 9 RR 2 7 7 Mechanical life .3 x 10 operations 2 10 A2 12 14 1 11 1 8 Probe isolation .Electrodes: 2000 VAC Probe sensitivity .4.7 K to 100 K ohms Probe voltage 24 VAC, 60 Hz Probe current 2 mA max. Operating temperature +14F to +140F -10C to +60C Weight .7 oz. (200g) Note: The cable for probes (max 300ft) should be run in separate conduit. A shielded cable is recommended. ORDERING INFORMATION: P NRU 220D MOUNTING SERIES INPUT POWER INPUT POWER MOUNTING SERIES 24A = 24VAC D = DIN-rail mounting NRU 48A = 48VAC L = 11 pin plug-in 110A = 110VAC P = 8 pin plug-in 220A = 220VAC Products and specifications subject to change without notice. Consult factory for application assistance. 204 Airline Drive, Suite 300, Coppell, Texas 75019 / Tel: (800) 677-5311 / FAX: (800) 677-3865 / www.crouzet-usa.com 5-7