controls controls 2 nnr series liquid level control pump up or down switch selectable ul listed csa recognized 10 amp spdt rated sensitivity adjustment 4.7 k ? to 47 k ? one, two or three probe operation 24 vac to 220 vac voltages specifications: input . . . . . . . . . . . . . . . . . . . . . . 24, 48, 110, 220 vac 15% (50/60 hz) maximum power consumption . . 24 vac: 1.5 va 48 vac: 1.7 va 1 10 vac: 2 va 220 vac: 2 va output . . . . . . . . . . . . . . . . . . . . . spdt relay contact material . . . . . . . . . . . . . agcdo (90/10) maximum loading . . . . . . . . . . . . 10 a ac resistive 1a dc inductive maximum switching voltage . . . . 250 vac 30 vdc relay maximum power rating . . . 2500 va 30 vdc mechanical life of relay . . . . . . . . 3 x 10 7 operations electrical life of relay . . . . . . . . . 2 x 10 5 at 2200 va resistive load probe isolation . . . . . . . . . . . . . . . switching contact: 2000 va electrodes: 2000 vac probe sensitivity . . . . . . . . . . . . . 4.7 k ohm to 47 k ohm probe voltage . . . . . . . . . . . . . . . 24 vac, 60 hz probe current . . . . . . . . . . . . . . . 2 ma max. operating temperature . . . . . . . . +14? to 140? -10? to +60? w eight . . . . . . . . . . . . . . . . . . . . . 4.6 oz. (130g) note : for best results use shielded cable with the probes and do not run probe cables with other wires. wiring diagram: a- pump down function: the output relay energizes when the liquid level reaches the high or max. probe. it remains energized until the level is below the low or min probe. the relay will remain de-energized until the high level is again reached. this control may also be used with only two probes by connecting the maximum and common terminals together. the output is energized when the low probe is in contact with the liquid. b - pump up function: when power is supplied to the unit, the output relay is energized. when the level reaches the high probe the relay is de-energized. the relay is energized again when the level falls below the lob probe. the control may also be used with only two probes by connecting the maximum and common terminals together. the output is de-energized when the level reaches the low probe. in both functions, if the container is conductive, it may be used as the common probe in some applications pump down (2) pump up (1) s ac ac min max common dimensions: 3 (76.2) 3.62 (92) 1.5 (38.1) 2.16 (55) r s level max min r s level t 0 mounting n = open pc board series nr n mounting nr series 220a input power input power 24a = 24 vac 48a = 48 vac 110a = 110 vac 220a = 220 vac ordering information: products and specifications subject to change without notice. order/technical support ?tel: (800) 677-5311 / fax: (800) 677-3865 / www.crouzet-usa.com 2/73
controls controls products and specifications subject to change without notice. order/technical support ?tel: (800) 677-5311 / fax: (800) 677-3865 / www.crouzet-usa.com 2/74 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 specifications: input power . . . . . . . . . . . . . . .24, 48, 110, 220 vac, 15% (50/60 hz) maximum voltage . . . . . . . . . . .24 vac: 1.5 va 48 vac: 1.7 va 1 10 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 80 vdc maximum power rating . . . . . .2500 va 80 w electrical life . . . . . . . . . . . . . .2 x 10 5 at 2200 va resistive load mechanical life . . . . . . . . . . . . .3 x 10 7 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 . . . . . .+14? to +140? -10? to +60? w eight . . . . . . . . . . . . . . . . . . .7 oz. (200g) note: the cable for probes (max 300ft) should be run in separate conduit. a shielded cable is recommended. mounting d = din-rail mounting l = 11 pin plug-in p = 8 pin plug-in series nru p mounting nru series 220d input power input power 24a = 24vac 48a = 48vac 110a = 110vac 220a = 220vac wiring diagram: ordering information: control of conductive liquids (tap water, sea water, sewage, chemical solutions, coffee, ice cream, etc.) 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. in either case, a common electrode is needed if the container is non-conductive. 11 12 14 c r 1 2 3 4 5 6 7 8 9 10 11 1 2 3 45 6 7 8 dnru pnru lnru a1 a2 rr s s s max c c max min max min min r s level max min r s level t 0
controls controls products and specifications subject to change without notice. order/technical support ?tel: (800) 677-5311 / fax: (800) 677-3865 / www.crouzet-usa.com 2/75 2 nr series liquid level control pump down ul listed csa recognized 24 vac to 220 vac operating voltages 4.7 k ? to 100 k ? sensitivity led relay indicator 10 amp spdt relay specifications: input . . . . . . . . . . . . . . . . . . . . . . . . 24, 48, 110, 220 vac 15% (50/60 hz) maximum power consumption . . . 24 vac: 1.5 va 48 vac: 1.7 va 1 10 vac: 2 va 220 vac: 2 va output . . . . . . . . . . . . . . . . . . . . . . spdt relay contact material . . . . . . . . . . . . . . agcdo maximum loading . . . . . . . . . . . . . 10a ac resistive 8a dc inductive maximum switching voltage . . . . . 250 vac 250 vdc relay maximum power rating . . . . 2500 va 80 w mechanical life of relay . . . . . . . . . 3 x 10 7 operations electrical life of relay . . . . . . . . . . . 2 x 10 5 at 2200 va resistive load 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 . . . . . . . . . +14? to 140? -10? to +60? w eight . . . . . . . . . . . . . . . . . . . . . . 4.6 oz. (130g) mounting d = din-rail or panel mounting l = 11 pin plug-in p = 8 pin plug-in series nr p mounting nr series 110a input power input power 24a = 24 vac 48a = 48 vac 110a = 110 vac 220a = 220 vac wiring diagram: ordering information: the output relay energizes when the liquid level reaches the high probe. the relay de-energizes when the liquid falls below the low probe. this control can also be used with only two probes by con- necting the maximum and common terminals together. the output is energized when the level reaches the low probe. in both functions, if the container is conductive, it may be used as the common probe in some applications. 11 12 14 c r 1 2 3 4 5 6 7 8 9 10 11 1 2 3 45 6 7 8 a1 a2 rr s s s max c c max min max min min r s level max min r s level t 0 dnr lnr pnr
controls controls products and specifications subject to change without notice. order/technical support ?tel: (800) 677-5311 / fax: (800) 677-3865 / www.crouzet-usa.com 2/77 2 nrt series liquid level control constant level pump up ul listed csa recognized 100 k ? sensitivity 10 amp spdt relay maintain constant level four mounting options specifications: input . . . . . . . . . . . . . . . . . . . . . . . . 24 vac, 48 vac, 110 vac 220 vac, 15%, 50/60 hz maximum power consumption . . . 24 vac: 1.5 va 48 vac: 1.7 va 1 10 vac: 2 va 220 vac: 2 va output . . . . . . . . . . . . . . . . . . . . . . spdt relay contact material . . . . . . . . . . . . . . agcdo maximum loading . . . . . . . . . . . . . 10 a ac resistive 8 a dc resistive maximum switching voltage . . . . . 250 vac 250 vdc relay maximum power rating . . . . 2500 va 80 w mechanical life of relay . . . . . . . . . 3 x 10 7 operations electrical life of relay . . . . . . . . . . . 2 x 10 5 at 2200 va resistive load probe isolation . . . . . . . . . . . . . . . switching contact 2000 vac electrodes: 2000 vac probe sensitivity . . . . . . . . . . . . . . 100 k ? probe voltage . . . . . . . . . . . . . . . . 24 vac, 60 hz probe current . . . . . . . . . . . . . . . . . 1 ma max. operating temperature . . . . . . . . . +14? to +140? -10? to +60? w eight . . . . . . . . . . . . . . . . . . . . . . 7 oz. (200g) note: the probe cables (max. 300ft) need not be shielded; however, it is not advisable to run the probe cables with power cables. if shielded cable is used, the shield and common should be connected. mounting d = din-rail or panel mounting l = 11 pin plug-in p = 8 pin plug-in n = open pc board series nrt = enclosed nnrt = open pc board version mounting dimensions same as nnr p mounting nrt series 110a input power input power 24a = 24 vac 48a = 48 vac 110a = 110 vac 220a = 220 vac wiring diagram: ordering information: the nrt series is applied for maintaining a constant level of conductive liquid. when the liquid decreases below the probe, the relay is energized after a 4 second time delay to avoid wave disturbances. the relay de-energizes when the liquid reaches the probe. a common electrode is needed if the container is non-conductive. s 0 t r level tt 0.3 s 11 12 14 c r 1 2 3 4 5 6 7 8 9 10 11 1 2 3 45 6 7 8 dnrt pnrt lnrt a1 a2 rr s s s max c c max min max
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