Documentation page: https://vutlan.atlassian.net/wiki/spaces/DEN/pages/93421575/VT590+Leak+sensor
Product page: https://vutlan.com/analog-sensors/22-vt590-spot-water-detector.html
Function and purpose
For the installation at the bottom of IT racks and cabinets; at the bottom of raised floors; at the bottom of trays and under equipment that can potentially leak. When water is in contact with both metal cores, the sensor indicates the emergence of moisture.
Attention! Metal cores are detectors of water, mount strictly downwards as close as possible to a floor.
Technical specifications
| Communications | Description |
|---|---|
| Sensor type: | Analog sensor |
| Outputs: | x1 RJ11 6P4C port |
| Daisy chain? | No |
| Max. distance from the monitoring unit: | 100 m |
| Environmental | |
| Operating temperature: | Min. -10 °C - Max.80 °C |
| Operating humidity: | 5 to 95% (Non-Condensing) |
| Power requirements | |
| Power consumption | 60mW |
| Mechanics | |
| Dimensions: | 60×18×18 mm |
| Mounting: | Mounting bracket included. Installed at the bottom of racks or floors or trays. |
| Packaging weight: | 125 g |
| Cable length: | 3m |
| General | |
| Manufactured in: | Slovak Republic, European Union |
| Manufactured by: | Vutlan s.r.o. |
| HS Code: | 9025 80 400 |
| Warranty: | 90 days |
Package includes
Drawings
Connecting the leak sensor
The sensor uses a standard Vutlan analog sensor cable for connecting to the monitoring unit. You can find further instructions at: Analog sensors connection
Installation using a sticker and a bracket
1) There's a round bump at the bottom of the plastic enclosure of the sensor. It is used for fastening when the sensor is mounted together with the on walls using a screw. In the current example, it is not needed. If you are planning to mount a device differently, do not follow this step.
Cut the round bump using a knife so that the bottom of a plastic enclosure will be flat.
2) a) Stick the mounting bracket to the bottom surface.
b) Stick a sensor to the mounting bracket following the rule from the next paragraph.
3) If Depending on the surface where the sensor will be installed follow either A or B. If the surface is conductive, then the electric loop between left and right metal bars sticking out the sensor will be closed, which means there's water that connects two bars.
A) If the surface is not conducive. Then mount the sensor metal bars as close to the surface as possible.
B) If the surface is conductive. Then mount the sensor metal bars a bit further from the surface but not too far, so that the detection of water would be possible.
4) The sensor is mounted.
Installation examples
Please find installation examples in our article "Water leakage detection using cable sensor and spot sensor" https://vutlan.com/blog/post/leakage-detection.html.
Connecting analog sensors
The sensor uses a standard Vutlan analog sensor cable for connecting to the monitoring unit.
This section includes child pages:
- VT410 / DC voltage monitor
- VT420 / Converter 4-20mA
- VT500 / Temperature sensor
- VT510 / Humidity sensor
- VT501 / Outdoor temperature sensor
- VT520 / AC voltage monitor
- VT520DIN / AC Voltage monitor (link)
- VT530 / Access sensor
- VT540 / Vibration sensor
- VT550 / Wind velocity meter
- VT560 / Smoke detector
- VT570 / PIR sensor
- VT572 / Radar microwave motion sensor
- VT591 / Leak sensor & WLC / Leak detection cable
- VT593 / Spot leak sensor
- VT594 / BMS leak water sensor
- Chain connection of analog sensors
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.
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If strong electromagnetic interference is present, we recommend using a 3-pair cable CAN FTP for sensor connection!
6P4C RJ11 cable wiring/pinouts
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1- Yellow, 2- Green, 3- Red, 4 - Black
Colors are true for this telephone cable. Both ends match the colors and pinouts (identical).
Please refer to the RJ connectors comparison table:
Daisy chain connection
Some of the analog sensors can be connected to a daisy chain. Please refer to the article "Chain Connection of analog sensors".
Maximum cable length test
ok = tested
x = failed
Model | 50m | 100m | 120m | 150m | 200m | |
|---|---|---|---|---|---|---|
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.
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Additional articles of interest
Configure analog sensors
Settings tab
To configure a sensor, go to "Main menu" >> "System tree" and click on the sensor element in the tree. A modal window with sensor properties will pop up. Change the needed settings and click "OK" or "Apply" at the bottom of the "Properties" window.
All sensors include:
1 | Name | The name is given by the system automatically. You can change it to anything you want. |
3 | ID | System ID of the element. |
4 | Type | Examples: temperature, humidity, vibration. |
5 | Class | Examples: analog, CAN, switch, discrete. |
6 | Hardware port | The external port number on the device panel to which the sensor is connected (if the sensor is external). |
All sensors have threshold controls:
In the picture above, the "Current value" equals 41.0 and is represented by the small triangle. Currently, the triangle is green because it is situated in the "Normal" range. Hence the sensor says that the "Current state" is "Normal". This value is used by the system's "Logic schemes" menu to notify the administrator or take action.
Hysteresis
Sensors have the option of setting the hysteresis state. Hysteresis can be a time, a value or it can be disabled.
If the hysteresis is set in time, the sensor will transmit to a new state with a delay of the specified number of seconds in the corresponding field. The time counting will begin from the moment when the measured value of the sensor has left the current range.
Each state has its own field. Which determines the time that the sensor value must continuously hold for the state to change to the specified.
If you set the hysteresis by value, the sensor transition to a new state will occur when the measured value of the sensor exits beyond the current range, adjusted for the specified hysteresis value.
You can calibrate the sensors. Use K and B coefficients. After the calibration, please, save the values in flash memory.
To save sensor properties in the device's flash memory press " 
" then "OK" to confirm.
Example: Why do we need to use Hysteresis
Let’s say that we have a temperature sensor. Let’s say that we have set up threshold values.
We have set the value 25.5 °C to be a threshold value between Normal/Alarm states.
If the temperature drops just below 25.5 °C You will have a “Normal” state.
If the temperature goes just above 25.5 °C You will have a “Warning” state.
Sometimes the temperature may stay at 25.5 °C and jump up and down by 0.1-0.3 °C. In this case, You will get too many notifications that the sensor is showing a Warning or Normal state.
In this case, we need to use a Hysteresis.
If the type “time” is chosen, the system will wait for a specified time before the State of the sensor is declared.
If type “value” is used, unless the temperature drops by a larger amount than specified, the sensor state will not be declared.
Tuning the sensor value
Sensor readings can be tunned by a linear formula "y = k * x - b"
Example VT407 + HAT-100Q1 / AC current converter:
Metered current for HAT: from 0 to 100A (This means that the range equals 100, k = 100)
The output of VT407 is 0-5V (That means that the range is equal to 5)
"b" = the value that the sensor shows in WebUI when there's no current. Let's say that b = + 0.021
You should use the following formula for HAT: 100/5*(x-y)
The expression formula would be 20*(x-0.021)
Point is used as a decimal separator (3.14)
Charts tab
The charts tab shows the following:
Display chart for |
| |
Refresh data | Start | Poll a sensor |
Reset all charts | Reset all | Clears all saved data for the sensor. |
Export data | XML or CSV | Exporting data through WebUI does not work for more than a couple of days and is very rough. If you need detailed log data, use the logging of sensor values to the media. Note: Make sure no endpoint security services used in the network are not blocking the download of XML and CSV files. |
Reset smoke sensors
If analog sensors like VT560 / Smoke detector/ sensor detects smoke or fire, it will go into Alarm mode. Alarm mode can only be switched off manually using the Reset smoke detectors panel or using the onboard sensor Analog sensor power reset is found in the System tree >> Onboard.
API: managing system elements by 3rd party Software
Vutlan has an open API. Read more at:
https://vutlan.atlassian.net/wiki/spaces/API/pages/335740995/Managing+system+elements
Copyright:
Vutlan s.r.o. (LLC)
Remote Infrastructure Monitoring and Control
43 ul.Svornosti, 821 06 Bratislava,
Slovak Republic