NATIONAL CONTROLS NS141 User Manual

2-8

240V120VCOM

LNC-NS141-*10

240 V COM120 V

LOAD

HI

LO

COM

3.50

4.00

1.40

2.80

.187 X .020 MALE

FAST-ON (3 PL)

.250 X .032 MALE
FAST-ON (6 PL)

.10

.312

MAX

1.70

.250

R

R

E61377

A B

IDLE

(RED LED)

LOAD

120 V

COM 240V120V

240 V

COM

COM HI

LO

075

120 VAC

240 VAC

INPUT VOLTAGE

LOAD

NOTE: MUST USE COM TO 120 V

OUTPUT WHEN 120V INPUT IS USED

MUST USE COM TO 240 V OUTPU

T

WHEN 240 V INPUT IS USED

4

8

12

16

0

68 (20) 104 (40) 140 (60) 176 (80)

AMBIENT TEMPERATURE F ( C)

MAXIMUM LOAD VS. AMBIENT

LOAD CURRENT (AMPS RMS)

075

075

075

075

075

075

075

075

12" X 12" HEATSINK

10" X 10" HEATSINK

6" X 6" HEATSINK

NO HEATSINK

4608/12/94

LIQUID LEVEL CONTROL SERIES

Resistance Sensors (Dual Probe, Dual Voltage) 1hp Solid State Output

Model NS141

FEATURES

100% functionally tested

●

16 A 1 hp solid state output rating

●

120/240, 100/200 VAC operation

●

voltages
Solid state sensing circuitry

●

Isolated UL Class ll sensing voltage

●

Adjustable sensitivity by Trimpot

●

●

1/4” male fast-ons for circuit connection

●

Conformal coating to protect circuit
from harsh environments

●

Operating Logic: In Model NS141-A10
(Pump Down) the load is de-energized until
the liquid reaches the high probe. When liq
uid touches the high probe, the load is acti
vated until the level drops below the low
probe.
Model NS141-B10 (Pump Up): The load
is energized until the liquid reaches the high
probe. When liquid touches the high probe,
the load is deactivated until the level drops
below the low probe.
On both models a red light is activated
when the load is off. If the tank is non-con
ductive, a third (common) probe must be
installed at a level where it will always be
submerged.

SPECIFICATIONS

CONTROL TYPE

On/Off Resistance Sensing:

NS141-A10/A100: Probe resistance below set
point activates relay
NS141-B10/B100: Probe resistance above set
point activates relay

Sensing Voltage: 30 VAC, max. RMS
Sensing Current: 1 mA, max. RMS
Sensitivity Adjustment: Factory set at

50 K ohms, ±20%

ORDERING INFORMATION

Pump Down 120/240 VAC LNC-NS141-A10

Pump Up 120/240 VAC

Pump Down 100/200 VAC

Pump Up 100/200 VAC LNC-NS141-B100

Probe Holder with Ground LLH-11383-010

AMETEK National Controls Corp. • 1725 Western Drive • West Chicago, Illinois 60185 • Tel: [phone] • 630-231-5900 • FAX: [phone] • www.nationalcontrols.com

File #E61377

LOGIC TYPE INPUT VOLTAGE PART NUMBER

ACCESSORY PART NUMBER

OUTPUT

Type: Single-pole solid state switch
Rating: 16 A 1 hp at 120, 240 VAC
Life:

Electrical: 1,000,000 min. at full load

INPUT

Operating Voltage:

NS141-A10: 120 VAC, ±10%, between COM
and 120 terminals
NS141-B10: 240 VAC, ±10%, between COM
and 240 terminals
NS141-A100: 100 VAC, ±10%, between COM
and 120 terminals
NS141-B100: 200 VAC, ±10%, between COM
and 240 terminals

Power Consumption:

NS141-A10/B10: 3.0 VA max.
NS141-A100/B100: 4.0 VA max.

Frequency: 50/60 Hz

-

-

PROTECTION

Isolation: 1500 VAC between probe and other

terminals
Transient Voltage: Protected by a 30 joule metal

oxide varistor

MECHANICAL

Terminations: 1/4” x .032” male fast-ons for

input voltage and load, .187” x .020” fast-ons for
probes

Mounting: 2 - 3/16” slots on 3.5” center in alumi-

-

num chassis

ENVIRONMENTAL

Operating Temperature: 0°C to 65°C

LNC-NS141-B10

LNC-NS141-A100