Anderson LS series User manual

Anderson Instrument Co. Inc.
156 Auriesville Road
Fultonville, NY 12072
1-800-833-0081
Fax [phone]
Instruction Manual
Instrument Model Number
Instrument Serial Number
30003 / 1.0 / 2015-05-06 / PW / NA
"LS" Capacitive Point Level Switch

PAGE 3
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

PAGE 4
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 specied 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.

PAGE 5
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 modications to the sensor that might have an inuence 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 Specications
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 Specications
Voltage Required: 24 (18 to 36 Vdc (≤ 20mA))
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 Specications
Wetted Materials: 316L Stainless Steel, PEEK
Wetted Finish: Better than Ra=32
Housing Material: 300 series Stainless Steel housing, lid and threaded connection (non contact
surfaces)
Agency Approval: CE compliant;
3-A compliant, Third party veried
ETL Listed
Conforms to UL Std 61010-1 3rd Ed(with Display Window option “0” only)
Certied to CSA Std C22.2 61010-1 3rd Ed(with Display Window option “0” only)
Visual Indication
Status LED: Red - Probe Immersed
Green - Probe Dry
Warranty: 2 years

PAGE 6
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
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.
1. Insert cable through Pressing Screw, Compression Ring,
Seal Grommet, and Sleeve as shown below.
CABLE REQUIREMENTS
3 conductor, stranded, 18-24 AWG,
shielded with ground.
4-8mm (0.16-0.31”) Cable Sheath OD.
Shown With
Cap Removed
3. Orient Connector end so that
center pin connecting screw is
horizontal facing right (see detail).
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.
6. Press the Seal Grommet into the Sleeve and hand-
tighten the Pressing Screw against the compression
ring.
7. Use a wrench to tighten the Pressing Screw another
3/4 turn. Do not over-tighten!
Connector End
To install connector, simply line up key, press into
receptacle, and the retaining ring.hand-tighten
*Receptacle pins should be coated with
USDA approved dielectric grease to
Minimize possibility of corrosion.
P/N: 5662400000
*Dielectric Grease
Retaining Ring Sleeve
Seal
Grommet
Compression
Ring
Pressing Screw
-2 included choose one to accommodate cable OD
Pin 1 - PWR
4B - DETAIL
Pin 3
(+PWR 18-36 VDC) Pin 4 - Output
Pin 1
(+PWR 18-36 VDC)
4A - DETAIL
Pin 3 - PWR Pin 4 - Output
** Polarity determined by desired switch action.
See switch actionbelow.
Field Wireable Connector (assembled)
PWR (red) wire - Pin 1**
PWR (green) wire - Pin 3**
P/N: 42119B0000 (without cable)
Switched Output (blue) wire
- Pin 4
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
Molded Cord Set
P/N: 42117H0025
42117H0050
42117H0100
Switched Output (brown) wire
PWR (red) wire - Pin 1**
PWR (green) wire - Pin 3**
Note: White and Grey not used
- Pin 4

PAGE 7
Section 4 - Installation and Sensitivity Adjustment
Warning! Do not subject this sensor to pressure that exceeds the specied 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 specications.
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
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
STATUS LEDS
RED WHEN IMMERSED
18-36VDC + - OUTPUT ACTIVE
WHEN IMMERSED
HIGH ACTIVE
FULL INDICATION
+ - O
PIN 1
PIN 3
PIN 4
STATUS LEDS
GREEN - DRY
18-36VDC - + OUTPUT ACTIVE
WHEN NOT IMMERSED
LOW ACTIVE
EMPTY INDICATION
- + O
PIN 1
PIN 3
PIN 4
PNP - Sourcing
+O
-
18-36VDC
LOAD: MAX
50mA (1W)
EXTERNAL
INTERNAL
NPN - Sinking
+O
-
18-36VDC
LOAD: MAX
50mA (1W)
EXTERNAL
INTERNAL
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
Dielectric Threshold
Adjustment

PAGE 8
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! Before removing for service or calibration, ensure that residual product has been ushed
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 verication. 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.
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.

PAGE 9
Section 6 - Dimensions
2.32” (59.8mm)
0.44”(11.2mm)
4.48”
(113.8mm)
VARIES WITH FITTING
Time Delay
5s
0.1s
2.5s
Time Delay
SWITCH
Power
Power
Output
0
1
2
3
4
5
6
7
8
9
2 - 10”
(50 - 250mm)
2.32” (59.8mm)
0.44”(11.2mm)
4.48”
(113.8mm)
VARIES WITH FITTING
Time Delay
5s
0.1s
2.5s
Time Delay
SWITCH
Power
Power
Output
0
1
2
3
4
5
6
7
8
9
2 - 10”
(50 - 250mm)
Weight: 2” Tri-Clamp® 1.85 lbs. (.84kg)
1.5” Tri-Clamp® 1.65 lbs.(.75kg)

PAGE 10
Section 7 - Part Number Matrix
Section 8 - Accessories
Molded Cordsets
P/N 42117H0025: 25 foot
P/N 42117H0050: 50 foot
P/N 42117H0100: 100 foot
OUTPUT TYPE
1 PNP - Sourcing
2 NPN - Sinking (special order)
FITTING STYLE
004 1-1/2” Tri-Clamp®
005 2” Tri-Clamp®
165 G1/2” CLEAN Adapt 1
DISPLAY WINDOW
0 No window, Blank cover
1 Window for display and status light
SENSITIVITY
1 Standard
2 Dielectrics from 2-20(special order)
Only standard and 2” probe length options available
SENSOR WIRING
00 QDR w/No FWC & no Cable
01 QDR w/FWC & no Cable
05 QDR w/25 ft 5-Conductor Molded Cordset
10 QDR w/50 ft 5-Conductor Molded Cordset
20 QDR w/100 ft 5-Conductor Molded Cordset
L S
QDR - Quick Disconnect Receptacle
FWC - Field Wireable Connector
Typical Configuration:
LS10051101000
Level Switch with PNP Sourcing Output, 2”
Tri-Clamp®Process Connection, Window Display,
Field Wireable Connector and Standard Probe.
PROBE LENGTH
000 Standard
050 2” (50mm)
100 4” (100mm)
150 6” (150mm)
200 8” (200mm)
250 10” (250mm)
1Meets 3-A when used with a 3-A compliant adapter