Sensor configurations
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 | Name is given by the system automatically. You can change it to anything you want. |
3 | ID | System ID of the element |
4 | Type | Example: temperature, humidity, vibration |
5 | Class | Examples: analog, CAN, switch, discrete |
6 | Hardware port | Номер внешнего порта на панели устройства к которому подключен датчик (если датчик внешний). |
All sensors have threshold controls:
On the picture above, "Current value" equals 24.5 and is represented by the small triangle. Currently the triangle is red because it is situated in an "High alarm" range above "High alarm level", which equals 20.0. Hence the sensor says that "Current state" is "High alarm". This value is used by the system "Logic schemes" menu to notify the administrator or take action.
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 a 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 value of the sensor has left the current range.
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 flash memory press " " then "OK" to confirm.
Hysteresis
Sensor readings can be tunned by a linear formula "y = k * x - b"
Example VT406 + HOS-100Q1 / DC current converter:
Metered current for HOS is from -100A to +100A (This means that the range equals to 200)
The output of VT406 is 0-5V (That means that the range is equal to 5)
This means that k = 200/5
"b" = the value that the sensor shown in WebUI when there's no current. Let's say that b = + 0.21
You should use the following formula for HOS: 200/5*(x-b)
The expression formula would be 40*(x-0.21).
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 shown in WebUI when there's no current. Let's say that b = + 0.21
You should use the following formula for HAT: 100/5*(x-y)
The expression formula would be 20*(x-0.21)
Example: Using fuel tanks.
Each fuel tank has it's own formula for volume vs height. Please see this useful resource for finding out such a formula.
https://www.calculatorsoup.com/calculators/construction/tank.php
In this can, You need to use non-linear formula.