Syrelec, Brand of Crouzet Control NNR SERIES Data Sheet

CONTROLS CONTROLS

Pump Down (2)
Pump Up (1)

s

AC

AC

MinMax

Common

3

(76.2)

3.62
(92)

1.5

(38.1)

2.16
(55)

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

S

Max

min

LEVEL

R

S

LEVEL

R

t0

SPECIFICATIONS:

Input . . . . . . . . . . . . . . . . . . . . . . 24, 48, 110, 220 VAC

Maximum power consumption . . 24 VAC: 1.5 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 107operations

Electrical life of relay . . . . . . . . . 2 x 105at 2200 VA resistive load

Probe isolation . . . . . . . . . . . . . . . Switching contact: 2000 VA

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)

±15% (50/60 Hz)

48 VAC: 1.7 VA
110 VAC: 2 VA
220 VAC: 2 VA

Electrodes: 2000 VAC

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

WIRING DIAGRAM:

DIMENSIONS:

Note: For best results use shielded cable with the probes and do not run probe

cables with other wires.

ORDERING INFORMATION:

N

MOUNTING

Products and specifications subject to change without notice.

N = Open PC Board

5-6

MOUNTING

NR

SERIES

SERIES

NR

220A

INPUT POWER

INPUT POWER

24A = 24 VAC
48A = 48 VAC
110A = 110 VAC
220A = 220 VAC