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Table of Contents
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Function and purpose

Product page: https://vutlan.com/analog-sensors/91-vt591-leak-sensor.html

Datasheet page: https://vutlan.atlassian.net/l/cp/FxCBogKP

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The VT591 Water Leak Sensor is designed to detect water leaks by sensing a drop in resistance along the connected WLC Water Leak Cable. This sensor requires the use of a WLC Leak Cable, which is ordered separately and available in various lengths to suit different installation needs.

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"WLC / Water leak cable" is ordered separately!  When water is in contact with the detection cable, a resistive sensor indicates the emergence of moisture. The whole area can be effectively monitored by placing the cable near or with possible flood sources.

Used for

The VT591 Water Leak Sensor is used for:

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Model

Description

WLC3

WLC / Leak detection cable length is 3m.

WLC6

WLC / Leak detection cable length is 6m.

WLC10

WLC / Leak detection cable length is 10m.

WLC15

WLC / Leak detection cable length is 15m.

WLC25

WLC / Leak detection cable length is 25m.

WLC50

WLC / Leak detection cable length is 50m.

Dimensions

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Usage examples

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Technical specifications

VT591 / Water leak sensor specifications

Sensor type:

Analog sensor

Measures:

Detects water leakage by the drop in resistance in WLC water leak cable

Chain connection

No

Dimensions:

60×18×18 mm

Weight:

60 g

Inputs:

2 wire (WLC cable)

Outputs:

RJ11/RJ12 (6p4c)

Operating temperature:

-10 °C to +80 °C

Operating humidity:

5% to 95% (Non-Condensing)

Mounting:

Mounting bracket Screw and sticker included.

Power consumption:

60mW

Max. distance:

100 m from the monitoring or extension unit

Response time:

15 sec.,

Recovery time:

Depends on how fast the sensor dries out

Manufactured in:

Slovak Republic, E.U.

HS Code:

9025 80 400

GTIN

8588009886211

WLC / Water leak cable specifications

Description

WLC can work in high humidity, pollution, and hazardous waste

Detectable liquids

Clean, polluted & distilled water; acids; alkalis; alcohols, and other electrically conductive liquid

Diameter

6.5 mm in diameter

Lengths

Order options include 3m, 6m, 10m, 15m, 25m, 50m, or custom length.

Weight

36 g/m

Operating humidity

0% - 95 %

Max. storage temperature

75°C

Max. cable length

100 m

Outputs

x2 wires

HS code:

8544 42 10

GTIN:

3m 8588009886396, 6m 8588009886433, 10m 8588009886402, 15m 8588009886419, 25m 8588009886440, 50m 8588009886426,

Package content VT591

Included page https://vutlan.atlassian.net/wiki/spaces/DEN/pages/232259595/VT591+package+content

Include Page
VT591 package content
VT591 package content

Package content WLC

Included page https://vutlan.atlassian.net/wiki/spaces/DEN/pages/2921463809/WLC+package+content

Include Page
WLC package content
WLC package content

Connecting WLC / Water leak cable

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Do not do illustration

Description

Panel
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The cable can not touch itself. It needs to be straightened.

Panel
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Do not twist or press down the cable too much. This may lead to deformation. The cable has two sensing wires, these wires can not touch each other.

Panel
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Do not put the cable on a conductive surface.

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You can cut the cable, but you need to isolate the ends so that they do not touch each other. And do not loop the cable.

  1. Connect the "VT591 / Water leak sensor" to the monitoring unit. The connection is plug-an-play.

  2. Connect the terminal cable to the VT591 sensor.

  3. Connect "WLC / Water rope" to terminal cable.

  4. Connect any additional "WLC / Water leak cables" to each other as shown in the picture above to make a chain connection.

  5. Wire the WLC rope around or under potentially leaking objects around the perimeter or under the raised floors.

  6. Put a protective cap on the connector of the last WLC cable in a chain.

  7. The sensor is ready to use.

Analog sensor connection

Page link https://vutlan.atlassian.net/wiki/spaces/DEN/pages/1016274/Analog+sensors+connection

Sensor configuration

Page link https://vutlan.atlassian.net/wiki/spaces/DEN/pages/1016314/Sensor+configuration

How to test the sensor & sensor cable

  1. Connect the WLC cable to VT591. Connect VT591 to the analog port of the system. The sensor should appear in the Vutlan Web Interface >> “System tree” panel >> “System group” tab >> “Autodetect” sensors. Make sure that the WLC cable is straight or not contacting itself, or any conducting material. The sensor should appear in the system as “Normal” (if the behavior is set to “Normal”), which means that there’s no presence of liquid (the two yellow wires along the WLC cable are not cables shorted).

  2. Take a rag and wet it a little. Touch the rag to both yellow ires on the WLC cable. This should shorten the contact. The VT591 sensor should change the state to “Alarm”.

  3. Dry the cable carefully with a dry cloth.

Installation examples

Please find installation examples in our articles "Water leakage detection using cable sensor and spot sensor" and "Leak detection under raised floors in data centers".

Cable layouts

Cover the whole area

Comprehensive protection for critical areas

Cover the edge area

Prevent leaks from immersing in or spreading out

Covering air-conditioned areas

Key protection against major leakage sources such as alr conditioners

Cable pinouts

The sensor uses a standard Vutlan analog sensor cable(RJ11/RJ12 to RJ11/RJ12) for connecting to the monitoring unit. You can find further instructions at the Analog sensors connection

Technical support

The device does not contain any user-serviceable parts. If the power meter requires service, contact your local sales representative. Do not open the device. Opening the device voids the warranty.

Schematics / Sensitivity adjustment

You can change the R10 resistor using the following schemes.

For example, if your room has very high humidity and the cable is in an alarm state without the spilled liquid being present, you can change R10 to 270k. This should lower the sensitivity level.

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Troubleshooting

The following table describes potential problems and their possible causes. It also describes checks you can perform or possible solutions for each. After referring to this table, if you cannot resolve the problem, contact your local Vutlan sales representative for assistance.

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