VT593 / Spot leak sensor

Function and purpose

The sensor detects water by increasing capacitance on two metal poles. The detector is encapsulated in plastic housing. Due to the low applied voltages and the applied leakage detection principle, it does not rust over time.

Product page: https://vutlan.com/analog-sensors/169-vt593-spot-leak-sensor.html

Dimensions

Usage example

Other installation examples of similar sensors for leak detection can be found in our articles "Water leakage detection using cable sensor and spot sensor" and "Leak detection under raised floors in data centers".

Technical specifications

	VT593 / Spot leak sensor specifications
Description	The sensor has two RJ connectors. RJ 6P4C connects to the analog port of Vutlan monitoring system. RJ 4P2C connects the leak detector with two poles.
Dimensions	60×18×18 mm
Weight	60 g
Input	2 wire (WDC cable)
Detection	Capacitive
Output	RJ11 / RJ12 (6p4c)
Operating temperature	-10 °C to +80 °C
Operating humidity	5% to 95% (Non-Condensing)
Mounting	Mounting bracket included.
Power consumption	60mW
Max. distance m	100 m
HS Code	9025 80 400
Components	Manufactured in E.U.
Special features	Response time: 15 sec., Recovery time: Depends on how fast the sensor dries out

	SLD / Spot leak detector specifications
Description	The detector is used in combination with the "VT593 / Spot leak sensor" for level monitoring of conductive liquids in containers, pits, cellars, etc. The sensor has two stainless steel poles. The detector is encapsulated in plastic housing for conductive liquids. The sensor can be connected to dry contact inputs (e.g. an alarm system). Can be placed near plumbing, trays, raised floors, under equipment, sinks, aquariums, sump pumps, refrigerators, dishwashers, toilets, basements, washing machines, water heaters, and garages.
Detectable liquids	Clean, polluted & distilled water; acids; alkalis; alcohols, and other electrically conductive liquid
Dimensions	30x20x8 mm
Lengths	1-meter cable
Weight	21 g with cable
Operating humidity	20%RH～100%
Working temperature	-10℃～50℃
Outputs	Two wires, RJ 4P2C plug.
Output form	NO normally open
Special features	The measuring electrodes are resistant to chlorine and salt water (stainless steel AISI 316 / V4A)

Package content

VT593 Water spot detector package content

Installation

Installing the sensor case

Steps

Cut off the ledge at the bottom of the case.

The ledge at the bottom of the case is used for installation inside IT racks.

The sensor can be installed using a screw or a sticker

Installing the detector

Steps

The detector can be installed differently depending on the end purpose and the the surface. See below options:

A: For non-conductive surfaces.

B: For conductive surfaces.

C: For liquid level detection.

D: For installing on to vertical surfaces for level detection.

The detector can be installed onto a surface using a screw or a sticker.

The detector has a hole in the middle for a screw to fit it.

Connecting the sensor

The end poles of the sensor should not touch a conductive surface.

Connect the "VT593 / Spot leak sensor" to the monitoring unit into any available analog port. The connection is plug-an-play. Use RJ11/12 6p4c to RJ11/12 6p4c cable.
Connect the "SLD / Spot leak detector" to the "VT593 / Spot leak sensor".

Analog sensor connection

This section includes child pages:

Connecting analog sensors

Connect the analog sensor by a supplied RJ-11 (6P4C) cable to any analog port "A1 .. A8" or "Sensor" port. The determination of the sensor type and connection will occur automatically.

Vutlan analog sensor connection (Analog ports).jpg

If strong electromagnetic interference is present, we recommend using a 3-pair cable CAN FTP for sensor connection!

6P4C RJ11 cable wiring/pinouts

1- Orange, 2- White Blue, 3- Blue, 4 - White Orange

Colors are true for this telephone cable. Both ends match the colors and pinouts (identical).

Please refer to the RJ connectors comparison table:

Maximum cable length test

ok = tested

x = failed

Model		50m	100m
VT407	AC current converter	ok recommended	ok
VT410	DC voltage monitor	ok
VT420	Converter 4-20mA	ok recommended	ok
VT500	Temperature sensor	ok	ok
VT501	Outdoor temperature sensor	ok	ok
VT510	Humidity sensor	ok	x
VT530	Access sensor		ok
VT540	Vibration sensor		ok
VT550	Wind velocity meter	ok	x
VT560	Smoke detector		ok
VT570	PIR sensor		ok
VT590	Spot water detector		ok
VT591	Water leak sensor		ok

Extending the number of analog sensors

Using CAN extension "VT408 / Sensor extension unit" it is possible to increase the number of analog sensors connected to the monitoring unit up to 80 sensors.

Analog sensors using CAN bus (Vutlan).jpg

Chain connection of analog sensors

This procedure applies to the following sensors, which are supported by the appliance and are connected to the analog ports:

Analog sensors	Daisy chain
VT500 / Temperature sensor	□
VT501 / Outdoor temperature sensor	□
VT510 / Humidity sensor	□
VT520 / AC Voltage detector	□
VT520DIN / AC Voltmeter	□
VT530 / Access sensor	■
VT540 / Vibration sensor	□
VT550/ Wind speed meter	□
VT560 / Smoke sensor	■
VT570 / PIR sensor	□
VT572 / Radar motion sensor	□
VT591 / Cable leak sensor	□
VT593 / Spot leak sensor	□

VT530 and VT560 are the only analog sensors that allow non-addressable chain connection. All the sensors in one chain are seen by the system as one sensor. One chain can have up to 10 sensors. Example of such connection:

Additional articles of interest

Sensor configuration

Adding logic schemes

Cable pinouts

The sensor uses a standard Vutlan analog sensor cable (RJ11/RJ12 6P4C to RJ11/RJ12 6P4C) for connecting to the monitoring unit. You can find further instructions in the Analog sensors connection article
The detector uses two wires. It has black and red wire. Plus or minus is irrelevant.

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.

Potential Problem	Possible Cause	Possible Solution
The sensor does not appear in the Vutlan monitoring interface	Communication lines are improperly connected.	Check the 6P4C RJ11 communication cable.
	The communication cable is inserted into the wrong port.	6P4C RJ11 communication cable must be inserted into the analog port of the Vutlan monitoring system.

Frequently asked questions

Question	Answer
Can I connect “SLD / Spot leak detector” to a 3rd party alarm system without “VT593 / Water spot sensor?	Yes, you can. But it depends on the alarm inputs charachteruistics of a 3rd party device.
Can I connect “WSD / water spot detector” to an dry contact inputs of Vutlan monitoring systems?	No, you can not. The resistance is high and this results in highly unreliable operation.

Copyright:

Vutlan s.r.o. (LLC)

Remote Infrastructure Monitoring and Control

43 ul.Svornosti, 821 06 Bratislava,

Slovak Republic

www.vutlan.com