Omega Products LVCN6200 Installation Manual

®

LVCN6200/7200 Series

Capacitive Point Level Detection

®

Contents

Introduction .................................................4

Models & Dimensions .........................................5

Wiring Diagram ..............................................6

Relay Status Guide ...........................................7

Installation ..................................................8

Calibration .................................................10

Handling ..................................................11

Technical Specifications ......................................12

Trouble Shooting ............................................14

Warranty & Disclaimer ....................................... 15

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03

Introduction

LVCN 6200 / LVCN 7200

Capacitive Point

Level Detection

The LVCN Series are capacitance switches ideal for High/Low level detection for
liquid, solids, granular materials and pastes. These units can also detect level
without being in contact with the product through a sight glass. Unlike other
capacitance probes, the LVCN6200/7200 can detect conductive, non-conductive or
low dielectric materials with extremely accurate performance without requiring an
external reference or installation in a metal vessel.

Both models can be made with cable or rod rigid stainless steel giving more flexibility
to complex applications.

®

Technology

The sensor operates in a manner that is similar to a simple capacitor. A high
frequency oscillator is located within the tip of the probe. When the tip of the probe
comes in contact with the medium, the frequency of the oscillation reaches a preset
point and the detection circuit signals the switch to change state.

Features

No Moving Parts – RuggedConstruction

Highly customizable:

POM (Polyoxymethylene), PTFEor PVC Sensing Tip

Extended Lengths withboth Rigid 316 rodor Cable

Threaded, Flange orSanitary Process Connections

Available in DC or Universal Power Supplyversions

Almost completely immunefrom build-up, coating mediaaggressive products

Easily applied in a wide range of applications/industries such as: water, oils,
corrosives, solids, powders,grains, conductive as wellas non-conductive medias.

04

Housing Options

Models and Dimensions

Aluminum

130mm

130mm

76mm

Nylon

89mm

80mm

Mounting Options for LVCN-6200 / 7200

Standard

120mm

15mm

70mm

Standard Sizes

3/4” or 1” NPT

20mm

80mm

1½”NPT

20mm

118mm

Extended Length

L

50mm

Cable Extension

20mm

Process Connections

Threaded Connections
3/4”

1”

NPT

BSP

1½”

2”

1,75

Tri-Clamp Connection

1½”

2”

2½”

3”

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TC Connection

Rubber Seal

Process Connection

90mm

50mm

Flange Connections

1”

FF

1½”

2”

RF

2½”

20mm

ANSI 150#
ANSI 300#

05

Wiring Diagram

L1 - Power ON (Green)

L2 - Output Status (Red

L3 - Sensor Status (Delay) Yellow

P1 - Sensibility Adjustment

P2 - Time Delay Adjustment

LVCN-7200 Nylon Housing

®

1

- Positive DC
2 - Negative DC
3 - Ground
4-

NO Contact

5-

Common

6-

NC Contact

1

- Power Supply
2-

Power Supply
3 - Ground
4-

Common
5-

NO Contact
6-

Common
7-

NC Contact

8 - Positive DC
9 - Negative DC

Power Supply

24Vdc

Power Supply

Relay Contact

5A-250Vac

L2

3

12

24Vdc

ON

L1

6

5

4

NO

CNC

L3

P1P2

LVCN-6200 Aluminum Housing

Time Delay Adjustment

LVCN-6200

8

-

+

24Vdc

1

2934567

80....260Vac

L1 L2

L3

5

46

3
2
1

0

Sensitivity

H

L

10

7

8
9
10

1

20 sec.

Delay

P2P1

NO

NC

Sensitivity Adjustment

06

LVCN-6200

Switch Position

H

Level

Probe covered

NO-NC

4

5

6

7

Relay Status Guide

Green LED

Yellow LED

ON ONON

Red LED

Maximum

fail-safe

L

Minimum

fail-safe

LVCN-7200

Level

Probe uncovered

Probe uncovered

Probe covered

Probe uncovered

SPDT

5

6

4

4

6

ON

5

7

4

6

ON

5

7

7

4

ON

6

5

Green LED

Yellow LED

ON OFF OFF

OFF

ON

OFF

Red LED

OFF

OFF

ON

6

5

4

Probe covered

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ON ONON

07

Installation

Installation

®

Verify that the location the probe is to be mounted
is clear fromthe stream of product(Fig. 1).

When installing more than one probe in your
process, verify that they are separated by a
minimum distance of500mm (Fig. 1).

Material falling ontothe probe can causedamage
or switching errors. If this is unavoidable, it is
recommended that a protective shield be installed
above the probe to protect it. The shield is also
recommended when the probe is use for a low
level switch orin the outflow ofthe product (Fig. 2).

The tip of the probe should slightly point
downward ( when possible) so that if thereare any
excess of product it will easily slide from the probe
(Fig. 2).

When installing from the top of the tank confirm
that the tip of the probe has cleared the side of the
vessel at least500mm (Fig. 3).

Fig. 2

Shield

500mm

Fig. 3

500mm

Fig. 1

500mm

Fig. 4

When installing the sensor directly to the tank
make sure that the rod extends beyond the inner
wall of the tank, by as much as possible, so that
internal build up or other debris does not interfere
with the sensor's performance (Fig. 2 correct Fig.
4 incorrect).

08

Installation

For probes with cable extensions, installation
should be from the top of the tank. It is also
recommended that for these probes the process
shouldn't have any agitation as this can cause
fluctuating readings or damage to the probe
(Fig. 5).

The LVCN with rigid rod is recommended for
applications that have turbulence or vortices
throughout use (Fig.6).

Ensure that the conduit is facing downward to
avoid water fromentering the housing (Fig.7).

Before installing the probe, ensure that the
available power supplyis correct.

Verify that the probe has been wired as per the
instructions on page7.

Verify that the operating pressure and
temperature of the process corresponds to the
operating parameters ofthe probe.

Fig. 5

Fig. 6

The probe must be installed utilizing the type of
connection provided.

Caution:

The Capacitance Probes Series will not work
properly in viscous, coating mediums with high
salt content (high di-electric), especially when
mounting from the side of the vessel. Sitron does
not recommend using this product in this type of
application unless otherwisespecified.

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Fig. 7

09

Calibration

1. Turn both potentiometers (P1 and P2) fully
counterclockwise before you begin (Fig. 1).

2. Install the probe and power it on. The L1 green
LED should beon.

3. With the vessel empty (or the medium not in
contact with the sensor), turn the sensibility
potentiometer (P1) clockwise until the yellow
LED (L3) turns On. Mark that location on the
electronics' label using a pencil. If this LED (L3)
does not turn on, mark the maximum position on
the label witha pencil (Fig. 2).

4. Fill the vessel until the medium is in contact
with the sensor.

5. Turn the potentiometer (P1) counter-clockwise
until the yellow LED (L1) turns Off. Mark the
location where the yellow LED shuts off on the
electronics' sticker using a pen or pencil. If the
LED does not turn Off, leave the potentiometer
completely turned counter-clockwise(Fig. 3).

LVCN

2
1

LVCN

2
1

LVCN

2
1

L3

3

0

L3

3

0

L3

3

0

5

4

Sensitivity

P1

5

4

Sensitivity

P1

5

4

Sensitivity

P1

®

Fig.1

®

L1

L2

6

6

6

10

7

8
9

10

1

20 sec.

Delay

P2

Fig.2

®

L1

L2

10

7

8
9

10

1

20 sec.

Delay

P2

Fig.3

®

L1

L2

10

7

8
9

10

1

20 sec.

Delay

P2

6. Now that you have marked minimum and
maximum settings for your particular application,
turn the sensibility potentiometer (P1) clockwise
half way between the two pencil marks. Thispoint
should be the ideal setting where the probe is
neither too sensitive or not sensitive enough.
This method of calibration should also prevent
false alarms.

Delay

Adjust the delaytime from 0,1 to20 seconds
by setting potentiometerP2.

10

LVCN

2
1

L3

3

0

5

4

Sensitivity

P1

Fig.4

®

L1

L2

6

10

7

8
9

10

1

20 sec.

Delay

P2

Probes:

Handling

Seal the thread with Teflon tape before
installation (Fig. 1).

Do not turn or handle by the housing when
tightening the process connection. However, the
housing is suitable to be reoriented by once the
process connection has been tighten.(Fig. 2).

Use the correct tool during installation (Fig. 3)

The probe should not be dropped or suffer any
impact or fall that could damage the electronics or
the plastic tipof the probe (Fig.4 and 5).

Periodic visual inspection of the probe is required
to check for corrosion or deposit build-up. If
deposits are found, clean the sensor to ensure
optimum performance.

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fig. 5

When cleaning the rod use a soft brush or any
other similar object.

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11

Technical Specifications

LVCN-7200

L2

3

2

1

6

45

ON

L1

NO

CNC

24Vdc

SC700

L3

P1P2

®

Application

Operating Voltage

Current Consumption

Output

Adjustment

Time Delay

Frequency oscilation

Level indication

Electrical Connection

Process Connection

Wetted Material

Enclosure Material

Max pressure

Operating Temperature

Level switch for liquids solids and granular

24 Vdc +/- 10%

2VA

Relay (SPDT) 5A max (250Vac)

Potentiometer - Switch Point

Potentiometer 1 to 20 seconds

5MHz

Led status on/off

Cable gland - ½”NPT cond. entry or M12 connector

3/4” to 1 1/2” BSP or NPT flange or sanitary connections

POM (Polyoxymethylene), PTFE or PVC

Glass filled nylon

145 PSI (10 Bar)

14 to 176º F (-10 to 80ºC)

12

Class Protection

NEMA 4 (IP 65)

SC700

8

L3

5

46

7

3

-

+

2
1

24Vdc

10

0

Sensitivity

1

2934567

H

L

NO

Technical Specifications

LVCN-6200

L1 L2

10

8
9

1

20sec.

Delay

P2P1

NC

Application

Operating Voltage

Current Consumption

Output

Adjustment

Time Delay

Frequency oscilation

Level indication

Electrical Connection

Process Connection

Wetted Material

Enclosure Material

Max pressure

Operating Temperature

Level switch for liquids solids and granular

85...230 Vac
24 Vdc

4VA

Relay (NO + NC) 5A max (250Vac)

Potentiometer - Switch Point

Potentiometer 1 to 20 seconds

5MHz

Led status on/off

Cable gland - ½”NPT cond. entry or M12 connector

3/4” to 1 1/2” BSP or NPT flange or sanitary connections

POM (Polyoxymethylene), PTFE or PVC

Glass filled nylon, Aluminium

145 PSI (10 Bar)

14 to 176º F (-10 to 80ºC)

Class Protection

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NEMA 4 (IP 65)

13

Trouble Shooting

®

Fault

Doesn’t

Power Up

Doesn’t

Detect Medium

Always On

Cause

Green LED Off

No power

Bad contact

Low sensibility

Build up on the sensor

Solution

Verify current supply

Verify cable connection

Adjust sensibility trimpot

Clean sensor then

adjust sensibility

14