VT501 Outdoor temperature sensor
Documentation page: https://vutlan.atlassian.net/wiki/spaces/DEN/pages/2671542274/VT501+Outdoor+temperature+sensor
Product page: https://vutlan.com/analog-sensors/15-vt501-outdoor-temperature.html
Function and purpose
This analog plug-and-play temperature sensor is designed for measuring temperatures in outdoor or cold environments. It can be connected to any analog port (A1...A8) of a Vutlan monitoring unit for seamless integration. Its reliable performance makes it ideal for monitoring outdoor conditions or maintaining temperature-sensitive areas such as cold storage rooms. With automatic detection and simple installation, the sensor provides accurate temperature readings and immediate alerts for better environmental control.
The maximum amount of sensors and maximum length can be extended using the "VT408 / Sensor extension unit".
The sensor can not be used on its own. It must be used together with Vutlan monitoring systems.
Use cases
These use cases demonstrate the VT501 sensor's flexibility in applications that require accurate and consistent temperature monitoring.
Server Rooms and Data Centers: Essential for monitoring and maintaining optimal temperature conditions to prevent overheating of critical IT equipment.
Industrial Equipment Monitoring: Used to track the temperature of machines and processes in manufacturing environments, ensuring operational efficiency and safety.
HVAC Systems: Helps regulate the temperature in climate control systems for buildings, ensuring efficient cooling and heating.
Cold Storage and Warehouses: Vital for monitoring temperature levels in storage areas for sensitive goods like food, pharmaceuticals, or other temperature-sensitive products.
Laboratories: Useful for monitoring environmental conditions to ensure that experiments, materials, and sensitive equipment are stored and operated at appropriate temperatures.
Indoor Environmental Monitoring: Can be used in offices or homes to track and maintain comfortable temperature levels and ensure energy efficiency.
Technical specifications
Feature | Description |
|---|---|
Type | Analog sensor |
Usage | Temperature measurement |
Product dimensions | (Diameter, Length) ∅7×30 mm |
Packing weight | 340 g |
Operating temperature | Temperature: Min. -40° C - Max.+105° C |
Max. distance from the unit | 100 m |
Cable length | 15 m |
Power Consumption | 60 mW |
Accuracy | ± 0.25 °C at room temperature |
Inputs terminal | RJ-11 6P4C |
Manufactured in (country) | Manufactured in Slovak Republic, E.U. |
HS Code | 9025 11 800 |
GTIN | 8588009886129 |
Package includes
| Package content | Description | Quantity |
|---|---|---|---|
1 | | Sensor | 1 pcs |
2 | | 4J-S clamp | 8 pcs |
Drawings
Connecting the sensor
The sensor uses a standard Vutlan analog RJS5 RJ11 sensor cable for connecting to the monitoring unit.
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.
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 | |
VT572 | Motion 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.
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 |
|---|---|
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■ | |
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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
https://vutlan.atlassian.net/wiki/spaces/DEN/pages/1016314
Sensor configuration
Contents
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.
Thresholds
All sensors include:
Name | The name is given by the system automatically. You can change it to anything you want. |
ID | System ID of the element. |
Type | Examples: temperature, humidity, vibration. |
Class | Examples: analog, CAN, switch, discrete. |
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 circuits" 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 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 - calibration
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)
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”.
Child pages
Copyright:
Vutlan s.r.o. (LLC)
Remote Infrastructure Monitoring and Control
43 ul.Svornosti, 821 06 Bratislava,
Slovak Republic
www.vutlan.com