Anderson Instrument Co. Inc.
156 Auriesville Road
Fultonville, NY 12072
1-800-833-0081
Fax 518-922-8997
"LS" Capacitive Point Level Switch
30003 / 1.0 / 2015-05-06 / PW / NA
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Table of Contents
Section 1 - Application and Intended Use 5
1.1 - Application 5
1.2 - Intended Use 5
Section 2 - Specifications 5
Section 3 - Wiring 6
Section 5 - Maintenance 8
Section 6 - Dimensions 9
Section 7 - Part Number Matrix 10
Section 8 - Accessories 10
Warranty and Return Statement 11
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Safety Warnings
Warning! This unit accepts DC voltage only, connection to AC voltage can cause failure of the sensor and/or risk of electrocution
Warning!Do not remove this sensor from the process while it is operating. Removal while the process is operating can contaminate the process and could cause human
injury.
Warning! Do not subject this sensor to pressure that exceeds the specied upper range
limit. Over-pressure may cause premature failure, incorrect output signal, or
possible human injury.
Warning! Before removing for service or calibration, ensure that residual product has
been ushed from the line and that internal pressure has returned to atmo
spheric pressure.
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Section 1 - Application and Intended Use
1.1 - Application
The LS point level switch is a capacitance-based sensor designed to detect the presence or absence of liquid at the
sensor tip. The on/off output can be used to provide an alarm, warning signal, or control signal to a pump or valve.
1.2 - Intended Use
The LS sensor is only to be used for the application that it has been designed, dimensioned and built for. The
electrical connection must be to a direct current network (see the nameplate).
The intended purpose of the LS is the detection of process or cleaning uids in the food processing, beverage,
pharmaceutical and chemical industries. This sensor is not suitable for the measurement of hazardous, explosive,
and combustible liquids of the PED group.
Any modications to the sensor that might have an inuence on the function and the safety features of the sensor
are only allowed to be carried out by authorized persons of Anderson Instrument Company. Possible misuse
including any use in contradiction to the above-mentioned application is an indication of misuse of the measuring
instrument!
In such a case Anderson does not assume any responsibility for safety.
Section 2 - Specifications
Operation/Environmental Specications
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: 302°F (150°C) max 60 minutes
Function: Full/empty signal determined by wiring
Response Time: 0.1s
Minimum Dielectric Threshold: Selectable from 20-70
Enclosure Protection: Designed and factory tested to NEMA 4x, IP69K; Suitable for use in wet
environments at up to 100% relative humidity.
Electrical Specications
Voltage Required: 24
Power Consumption: 0.6 W Typ. (i.e. 25mA at 24 Vdc)
Signal Output: PNP - Sourcing (active 50mA)
Optional NPN - Sinking (max 50mA)
Signal Transmission Power: ≤ 1mw
Connection: One 3 pin M12 Micro-mini electrical connector (QDR)
Mechanical Specications
Wetted Materials: 316L Stainless Steel, PEEK
Wetted Finish: Better than R
Housing Material: 300 series Stainless Steel housing, lid and threaded connection (non contact
surfaces)
Agency Approval: CE compliant;
Status LED: Red - Probe Immersed
Green - Probe Dry
Warranty: 2 years
(18 to 36 Vdc (≤ 20mA))
=32
a
(with Display Window option “0” only)
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7. Use a wrench to tighten the Pressing Screw another
Section 3 - Wiring
Warning! This unit accepts DC voltage only, connection to AC voltage can cause failure of the sensor and/or risk of electrocution
Figure 1.1 - Field Wireable Connector Assembly
4. Refer to pin detail.
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.
3. Orient Connector end so that
center pin connecting screw is
horizontal facing right (see 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).
Section 4 - Installation and Sensitivity Adjustment
Warning! Do not subject this sensor to pressure that exceeds the specied upper range limit. Over-pressure
may cause premature failure, incorrect output signal, or possible human injury.
Caution: For proper mounting of this sensor, verify that the tting connection type, size, gasket or seal, and
holding ring or clamp match the process connection it is being mounted to. Improper mounting can cause
process leakage, reduced pressure ratings, and/or contamination issues.
Caution: Do not open the sensor enclosure in wet or spray-down environments. Moisture ingression can cause
premature electronics failure.
Caution: Handle with care during installation to avoid damage to the sensor. Physical damage, especially to the
sensing surface or probe can cause incorrect output signal or premature failure.
Caution: Do not expose the sensor to process or ambient temperatures that exceed the rated specications.
Physical damage, incorrect output signal, or premature failure may result.
Select Switch Action:
- Switch action is determined by power supply polarity. If eld 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 PWR- for 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:
Position 0 - output off
Position 1 - output on
2. Positions 2-9 act as a sensitivity adjustment, position selects a minimum dielectric recognized. Reducing
dielectric threshold can help eliminate false readings.
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
Adjustment
8
7
6
5
4
2
3
9
0
1
Output Circuit:
Standard unit is PNP output see detail for connection
Optional unit is NPN output see detail for connection
Misc:
- Media must have water content >25% or a dielectric constant >20
- Coatings are generally ignored. Coatings of highly conductive media ≥ 30ms/cm may cause errors.
- Foam is generally ignored
HIGH ACTIVE
FULL INDICATION
+ - O
0
1
9
2
8
3
7
4
6
5
PIN 1
PIN 3
PIN 4
18-36VDC + - OUTPUT ACTIVE
WHEN IMMERSED
STATUS LEDS
RED WHEN IMMERSED
LOW ACTIVE
EMPTY INDICATION
- + O
0
1
9
2
8
3
7
4
6
5
PIN 1
PIN 3
PIN 4
18-36VDC - +
OUTPUT ACTIVE
WHEN NOT IMMERSED
STATUS LEDS
GREEN - DRY
PNP - Sourcing
-
+
O
LOAD: MAX
50mA (1W)
INTERNAL
EXTERNAL
NPN - Sinking
-
+
O
LOAD: MAX
50mA (1W)
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Section 5 - Maintenance
Warning! Do not remove this sensor from the process while it is operating. Removal while the process
is operating can contaminate the process and could cause human injury.
Warning!
from the line and that internal pressure has returned to atmospheric pressure.
Caution: Attempting to disconnect or change wiring to this sensor during process operation can cause
loss of signal to the control system!
Caution: Improper changes to sensitivity setting following installation and commissioning can result in
false output signal.
Caution: Improper replacement of components during service can result in process leakage, reduced
pressure rating, system cleanability issues, or incorrect output signal.
The LS is designed to provide years of trouble-free service, but should be checked annually by removing
from the process for a visual inspection and operational verication. The PEEK probe tip should be free from
cracks or deep scratches.
To check for proper operation, rst determine the status of the switch with the probe in air (no product
touching the tip). Depending on wiring, the status light may be on or off. Now immerse the probe tip in the
target uid and watch for a change in the status light. It should go from on to off, or from off to on. If there
is no damage and the unit is functioning as expected, the unit can be re-installed in the process. If it is
damaged or not functioning properly, we suggest replacing it and return the unit to the factory for repair or
replacement.
Caution: Verify that the sensor is operating properly after service, and prior to start-up of control system.
When power is rst applied, immerse sensor tip in target liquid and observe status change on indicator
light.
Before removing for service or calibration, ensure that residual product has been ushed
External cleaning instructions: The external surfaces of this sensor can be cleaned along with the equipment
or piping system that it is installed on, using cleaning and disinfecting solutions designed for use on hygienic
equipment.
Level Switch with PNP Sourcing Output, 2”
Tri-Clamp® Process Connection, Window Display,
Field Wireable Connector and Standard Probe.
1
Meets 3-A when used with a 3-A compliant adapter
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Warranty and Return Statement
These products are sold by The Anderson Instrument Company (Anderson) under the warranties set forth in the following paragraphs. Such warranties are extended only with respect
to a purchase of these products, as new merchandise, directly from Anderson or from an An-
derson distributor, representative or reseller, and are extended only to the rst buyer thereof
who purchases them other than for the purpose of resale.
Warranty
These products are warranted to be free from functional defects in materials and workmanship at the time the products leave the Anderson factory and to conform at that time to the
specications set forth in the relevant Anderson instruction manual or manuals, sheet or
sheets, for such products for a period of two years.
THERE ARE NO EXPRESSED OR IMPLIED WARRANTIES WHICH EXTEND BEYOND
THE WARRANTIES HEREIN AND ABOVE SET FORTH. ANDERSON MAKES NO WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE WITH
RESPECT TO THE PRODUCTS.
Limitations
Anderson shall not be liable for any incidental damages, consequential damages, special
damages, or any other damages, costs or expenses excepting only the cost or expense of
repair or replacement as described above.
Products must be installed and maintained in accordance with Anderson instructions. Users
are responsible for the suitability of the products to their application. There is no warranty
against damage resulting from corrosion, misapplication, improper specications or other
operating condition beyond our control. Claims against carriers for damage in transit must be
led by the buyer.
This warranty is void if the purchaser uses non-factory approved replacement parts and supplies or if the purchaser attempts to repair the product themselves or through a third party
without Anderson authorization.
Returns
Anderson’s sole and exclusive obligation and buyer’s sole and exclusive remedy under the
above warranty is limited to repairing or replacing (at Anderson’s option), free of charge, the
products which are reported in writing to Anderson at its main ofce indicated below.
Anderson is to be advised of return requests during normal business hours and such returns
are to include a statement of the observed deciency. The buyer shall pre-pay shipping
charges for products returned and Anderson or its representative shall pay for the return of
the products to the buyer.
Approved returns should be sent to: ANDERSON INSTRUMENT COMPANY INC.
156 AURIESVILLE ROAD
FULTONVILLE, NY 12072 USA
ATT: REPAIR DEPARTMENT
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ANDERSON INSTRUMENT CO., INC • 156 AURIESVILLE RD. • FULTONVILLE, NY 12072 • USA • 800-833-0081 • FAX 518-922-8997
ANDERSON INSTRUMENT CO. LP • 400 BRITANNIA RD. EAST, UNIT 1 • MISSISSAUGA, ONTARIO L4Z 1X9 • CANADA • 905-603-4358 • FAX 905-568-1652
NEGELE MESSTECHNIK GmbH (A Division of Anderson) • RAIFFEISENWEG 7 • D-87743 EGG A. D. GÜNZ • GERMANY • +49 (0) 8333/9204-0 • FAX +49 (0) 8333/9204-49
www.anderson-negele.com
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