User Manual

Thermal & Optical Bi-spectrum Network Camera User Manual
8
Note
Go to Image → VCA Rules Display to adjust the fonts size and the temperature colour of normal,
alarm and pre-alarm.
3.2.4 Set Thermography Rule
Steps
1. Customize the rule name.
2. Select the rule type to Point, Line, or Area. Then draw a point, line, or area on the interface
where the position to be measured.
Point
Please refer to Point Thermographyfor detailed configuration.
Line
Please refer to Line Thermographyfor detailed configuration.
Area
Please refer to Area Thermographyfor detailed configuration.
3. Configure the temperature measurement parameters.
Emissivity
Set the emissivity of the target. The emissivity of the surface of a material is its effectiveness
in emitting energy as thermal radiation. Different objects have different emissivity. Refer to
Common Material Emissivity Reference to search for the target emissivity..
Distance
The distance between the target and the device.
Reflective Temperature
If there is any object with high emissivity in the scene, check and set the reflective
temperature to correct the temperature. The reflective temperature should be set the same
as the temperature of the high emissivity object.
4. Click and set the Alarm Rule.
Alarm Temperature and Pre-Alarm Temperature
Set the alarm temperature and pre-alarm temperature. E.g., select Alarm Rule as Above
(Average Temperature), set the Pre-Alarm Temperature to 50 °C, and set the Alarm
Temperature to 55 °C. The device pre-alarms when its average temperature is higher than
50 °C and alarms when its average temperature is higher than 55 °C.
Filtering Time
It refers to the duration time after the target temperature reaches or exceeds the pre-alarm
temperature/alarm temperature.
Tolerance Temperature
Set the tolerance temperature to prevent the constant temperature change to affect the