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Anderson Instrument Co., Inc.
156 Auriesville Road
Fultonville, NY 12072
Phone: 518-922-5315 or 800-833-0081
www.anderson-negele.com
Technical Bulletin
NCS31P Capacitive Point Level
Quick Start Installation Guide
Section 1 - Field Wireable Connector
1. Insert cable through Pressing Screw, Compression Ring,
Seal Grommet, and Sleeve as shown below.
2. Strip back 1-1/4” of outer sheathing, cut off any excess wires,
shield and ground. Strip off 1/4” insulation from remaining four
wires. It is not necessary or recommended to tin the wires.
Shown With
Cap Removed
0
1
9
2
8
3
7
4
6
5
CABLE REQUIREMENTS
3 conductor, stranded, 18-24 AWG,
shielded with ground.
4-8mm (0.16-0.31”) Cable Sheath OD.
Pin 3 - PWR
4A - DETAIL
(+PWR 18-36 VDC)
Pin 4 - Output
To install connector, simply line up key, press into
receptacle, and the retaining ring.hand-tighten
0
1
9
2
8
3
7
4
6
*Receptacle pins should be coated with
5
USDA approved dielectric grease to
Minimize possibility of corrosion.
Pin 1
*Dielectric Grease
3. Orient Connector end so that
center pin connecting screw is
horizontal facing right (see detail).
Retaining Ring
Connector End
Pin 3
(+PWR 18-36 VDC)
P/N: 5662400000
Section 2 - Installation
Select Switch Action:
- Switch action is determined by power supply polarity. If field wireable connector is
used see instruction 4 in section 1 for wiring instructions. If assembly cable is
purchased connect Red conductor to PWR+ (18-36V) and Green conductor to PWRfor full (immersed) indication. Reverse these for empty (not immersed) indication.
Rotory Switch Output Test & Threshold Adjustment:
1. For installation testing sensor may be set for continuous output:
2. Positions 2-9 act as a sensitivity adjustment, position selects
a minimum dielectric recognized. Reducing dielectric threshold can help
eliminate false readings.
Output Circuit:
Position 0 - output off
Position 1 - output on
Position 2 - Dielectric 20 Position 6 - Dielectric 40
Position 3 - Dielectric 25 Position 7 - Dielectric 50
Position 4 - Dielectric 30 Position 8 - Dielectric 60
Position 5 - Dielectric 35 Position 9 - Dielectric 70
≥≥
≥≥
≥≥
≥≥
Standard unit is PNP output see detail for connection
Dielectric Threshold
Adjustment
8
7
9
6
5
4
2
3
Sleeve
Pin 1 - PWR
Pin 4 - Output
4B - DETAIL
HIGH ACTIVE
FULL INDICATION
+ - O
PIN 3
PIN 1
0
1
18-36VDC + - OUTPUT ACTIVE
PNP - Sourcing
4. Refer to pin detail.
4A - Wiring for full (immersed) indication:
Wire PWR+ to top right terminal (Pin 1)
and PWR- wire to bottom left (Pin 3). Wire
output to bottom right (Pin 4).
4B - Wiring for empty (not immersed) indication:
Wire PWR- to top right terminal (Pin1) and
PWR+ to bottom left (Pin 3). Wire output
to bottom right (Pin 4).
5. Screw on the Sleeve. Hand-tighten only.
Compression
Ring
Seal
Grommet
-2 included choose one to accommodate cable OD
6. Press the Seal Grommet into the Sleeve and handtighten the Pressing Screw against the compression
ring.
7. Use a wrench to tighten the Pressing Screw another
3/4 turn. Do not over-tighten!
Field Wireable Connector (assembled)
P/N: 42119B0000 (without cable)
Molded Cord Set
P/N: 42117H0025
42117H0050
42117H0100
** Polarity determined by desired switch action.
0
1
9
2
8
3
7
4
6
5
STATUS LEDS
PIN 4
WHEN IMMERSED
RED WHEN IMMERSED
Pressing Screw
Switched Output (blue) wire
PWR (red) wire - Pin 1**
PWR (green) wire - Pin 3**
Switched Output (brown) wire
PWR (red) wire - Pin 1**
PWR (green) wire - Pin 3**
Note: White and Grey not used
See switch action below.
LOW ACTIVE
EMPTY INDICATION
- + O
0
1
9
2
8
3
7
4
6
5
PIN 4
PIN 3
PIN 1
18-36VDC - +
OUTPUT ACTIVE
WHEN NOT IMMERSED
STATUS LEDS
GREEN - DRY
- Pin 4
- Pin 4
Misc:
- Media must have water content or a dielectric constant 20>25% >
- Coatings are generally ignored. Coatings of highly conductive
media 30ms/cm may cause errors.
≥
INTERNAL
EXTERNAL
-
+
O
LOAD: MAX
50mA (1W)
- Foam is generally ignored
18-36VDC
Rev. 1.0 Doc 1188 Page 1 of 2
Page 2
Section 3 - Specification
Operation/Environmental Specifications
Ambient Temperature Limits: 14 - 140°F (-10 - 60°C)
Pressure Rating: 150 PSI (10 BAR) max
Process Temperature Limits: 32 - 212°F (0 - 100°C)
CIP Cleaning: 109°F (143°C) for 120 minute
Function: Full/empty signal determined by
wiring
Response Time: 0.1s
Minimum Dielectric Threshold: Selectable from 20-70
Electrical Specifications
Voltage Required: 18 to 36 Vdc (≤ 20mA)
Power Consumption: 0.6 W Typ. (i.e. 25mA at 24 Vdc)
Signal Output: PNP - Sourcing (active 50mA)
Signal Transmission Power: ≤ 1mw
Connection: One 3 pin M12 Micro-mini
electrical connector (QDR)
Mechanical Specifications
Wetted Materials: 316L SS, USP class VI PEEK
Material certificates included
Wetted Finish: Metal Surfaces Ra = 8 microinch max
Polymeric Surfaces = 25 microinch max
Surface finish certificate included
Housing Material: 300 series Stainless Steel housing,
lid and threaded connection
(non contact surfaces)
Enclosure Protection: NEMA 4X, IP69K
Agency Approval: CE compliant;
ASME BPE 2012 compliant
Visual Indication
Status LED: Red - Probe Immersed
Green - Probe Dry
Warranty: 2 years
4.29”
109mm
98mm
3.86”
1.97”
50mm
Varies
w/ fitting
4.29”
109mm
3.27”
83mm
ATTENTION: CONNECTOR WIRING
Full Ind Empty Ind
Pin1 - 18-36 VDC VDC Com
Pin3 - VDC Com 18-36 VDC
Pin4 - Switch Output MAX 50 mA
Refer to technical bulletin for Anderson cable color coding
SENSOR END
PIN 3
PIN 1
PIN 4
1.97”
50mm
1.98”
50mm
Rev. 1.0 Doc 1188 Page 2 of 2
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