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DS-2TD2xxx-xxxx/xx Thermal and Optical Bi-Spectrum Network Camera User Manual
UM DS-2TD2xx-xxxx/xx Thermal 072020NA 17
6. See Set Arming Schedule for setting scheduled time. Refer to Linkage Method Settings for setting
linkage method.
7. Click Save. The maximum temperature and thermography rules will be displayed on live view.
Go to Image → VCA Rules Display to adjust the font size and the temperature color of
normal, alarm, and pre-alarm.
3.3.4 Set Thermography Rule
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 at the
position to be measured.
• Point: See Point Thermography for detailed configuration.
• Line: See Line Thermography for detailed configuration.
• Area: See Area Thermography for 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 after the target temperature reaches or exceeds the pre-
alarm temperature/alarm temperature.
• Tolerance Temperature: Set the tolerance temperature to prevent constant temperature changes
to affect the alarm. E.g., set tolerance temperature as 3° C, set alarm temperature as 55° C, and set
pre-alarm temperature as 50° C. The device sends a pre-alarm when its temperature reaches 50° C
and alarms when its temperature reaches 55° C, and only when the device temperature is lower
than 52° C will the alarm be cancelled.
• Pre-Alarm Output and Alarm Output: When the target temperature exceeds the pre-alarm or alarm
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