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, chemical solutions, coffee, ice cream, etc.) S Max min LEVEL The relay is energized when the level falls below the low level probe. It de-energizes when the high level probe is reached. The NRU will also control a single level. In this case, a single probe is used and the relay operates when the probe is not immersed. The Max terminal is connected to common with a jumper. R S LEVEL R 0 In either case, a common electrode is needed if the container is non-conductive. t 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 110 VAC: 2 VA 220 VAC: 2 VA Output . . . . . . . . . . . . . . . . . . .SPDT Relay Contact material . . . . . . . . . . .AgCdO Maximum loading . . . . . . . . . .10A AC resistive 8A DC resistive Maximum switching voltage . .250 VAC 250 VDC Maximum power rating . . . . . .2500 VA 80 W Electrical life . . . . . . . . . . . . . .2 x 105 at 2200 VA resistive load Mechanical life . . . . . . . . . . . . .3 x 107 operations 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) DNRU PNRU LNRU S S S Max C min A1 11 C min Max 6 5 8 3 A2 12 14 4 7 4 R C 9 R 10 2 1 11 Max min 5 3 6 R 2 1 7 8 Note: The cable for probes (max 300ft) should be run in separate conduit. A shielded cable is recommended. ORDERING INFORMATION: MOUNTING D = DIN-rail mounting L = 11 pin plug-in P = 8 pin plug-in P NRU 220D MOUNTING SERIES INPUT POWER SERIES NRU INPUT POWER 24A = 24VAC 48A = 48VAC 110A = 110VAC 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 5