CONTROLS
CONTROLS
NNR SERIES
LIQUID LEVEL CONTROL
PUMP UP OR DOWN
SWITCH SELECTABLE
UL listed
CSA recognized
•
•
•
•
10 Amp SPDT Rated
Sensitivity Adjustment 4.7 kΩ to 47 kΩ
One, Two or Three Probe Operation
24 VAC to 220 VAC Voltages
2
S
Max
LEVEL
R
min
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
S
LEVEL
R
0
t
SPECIFICATIONS:
. . . . . . . . . . . . . . . . . . . . . . 24, 48, 110, 220 VAC
±15% (50/60 Hz)
Maximum power consumption
. . 24 VAC: 1.5 VA
48 VAC: 1.7 VA
110 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°F to 140°F -10°C to +60°C
Weight
. . . . . . . . . . . . . . . . . . . . . 4.6 oz. (130g)
Note:
For best results use shielded cable with the probes and do not run probe
cables with other wires.
Input
WIRING DIAGRAM:
AC
s
Pump Down (2)
Pump Up (1)
Max Min
Common
AC
DIMENSIONS:
3.62
(92)
1.5
(38.1)
2.16
(55)
ORDERING INFORMATION:
N
MOUNTING
3
(76.2)
NR
SERIES
220A
INPUT POWER
MOUNTING
N
= Open PC Board
SERIES
NR
INPUT POWER
24A
= 24 VAC
48A
= 48 VAC
110A
= 110 VAC
220A
= 220 VAC
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
NRU SERIES
LIQUID LEVEL CONTROL
PUMP UP
UL listed
CSA recognized
•
•
•
•
•
LED Relay Indicator
Three Styles
Pump Up Control
4.7 kΩ to 100 kΩ Sensitivity
10 Amp SPDT Relay
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.
0
t
S
Max
min
LEVEL
R
S
LEVEL
R
In either case, a common electrode is needed if the container
is non-conductive.
SPECIFICATIONS:
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
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°F to +140°F
-10°C to +60°C
Weight
. . . . . . . . . . . . . . . . . . .7 oz. (200g)
Note:
The cable for probes (max 300ft) should be run in separate conduit. A
shielded cable is recommended.
WIRING DIAGRAM:
DNRU
˜
S
S
Max C min
S
C
Max min
LNRU
PNRU
A1 11
R
C
min
Max
5
4
3
6
7
8
R
4
3
2
1
5
6
R
9
10
12 14
A2
2
1
1
1
7
8
˜
ORDERING INFORMATION:
P
MOUNTING
NRU
SERIES
220D
INPUT POWER
MOUNTING
D
= DIN-rail mounting
L
= 11 pin plug-in
P
= 8 pin plug-in
SERIES
NRU
INPUT POWER
24A
= 24VAC
48A
= 48VAC
110A
= 110VAC
220A
= 220VAC
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
CONTROLS
CONTROLS
NR
LEVEL CONTROL
SERIES
LIQUID
PUMP DOWN
UL listed
CSA recognized
•
•
•
•
24 VAC to 220 VAC Operating Voltages
4.7 kΩ to 100 kΩ Sensitivity
LED Relay Indicator
10 Amp SPDT Relay
2
S
Max
min
LEVEL
R
S
LEVEL
R
0
t
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.
SPECIFICATIONS:
Input
. . . . . . . . . . . . . . . . . . . . . . . . 24, 48, 110, 220 VAC ±15% (50/60 Hz)
Maximum power consumption
. . . 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 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°F to 140°F
-10°C to +60°C
Weight
. . . . . . . . . . . . . . . . . . . . . . 4.6 oz. (130g)
WIRING DIAGRAM:
DNR
˜
S
S
Max C min
S
C
Max min
LNR
PNR
A1 11
R
C
min
Max
5
4
3
6
7
8
R
4
3
2
1
5
6
R
9
10
12 14
A2
2
1
1
1
7
8
˜
ORDERING INFORMATION:
P
MOUNTING
NR
SERIES
110A
INPUT POWER
MOUNTING
D
= DIN-rail or panel mounting
L
= 11 pin plug-in
P
= 8 pin plug-in
SERIES
NR
INPUT POWER
24A
= 24 VAC
48A
= 48 VAC
110A
= 110 VAC
220A
= 220 VAC
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
CONTROLS
CONTROLS
NRT SERIES
LIQUID LEVEL CONTROL
CONSTANT LEVEL
PUMP UP
UL listed
CSA recognized
•
•
•
•
100 kΩ Sensitivity
10 Amp SPDT Relay
Maintain Constant Level
Four Mounting Options
2
s
Level
R
0
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.
T
0.3 s
T
t
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
110 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 kΩ
Probe voltage
. . . . . . . . . . . . . . . . 24 VAC, 60 Hz
Probe current
. . . . . . . . . . . . . . . . . 1 mA max.
Operating temperature
. . . . . . . . . +14°F to +140°F -10°C to +60°C
Weight
. . . . . . . . . . . . . . . . . . . . . . 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.
WIRING DIAGRAM:
DNRT
LNRT
PNRT
˜
S
S
Max C
S
C
Max
A1 11
R
C
min max
5
4
3
6
7
8
R
4
3
2
1
5
6
R
9
10
12 14
A2
2
1
1
1
7
8
˜
ORDERING INFORMATION:
P
MOUNTING
NRT
SERIES
110A
INPUT POWER
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
Products and specifications subject to change without notice.
INPUT POWER
24A
= 24 VAC
48A
= 48 VAC
110A
= 110 VAC
220A
= 220 VAC
Order/Technical Support – Tel: (800) 677-5311 / FAX: (800) 677-3865 / www.crouzet-usa.com
2/77
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