Installation

5.4.4 Trigger and Hold Function

The FTC3 input can be used as external trigger in conjunction with the software trigger mode setting “Trigger” or “Hold”.

External switch:

-contact relay,

-transistor,

-TTL gate, …

Figure 17: Wiring of FTC3 as External Input

Trigger: A logical low signal at the input FTC3 will reset the peak or valley hold function. As long as the input is kept at logical low level the software will transfer the actual object temperatures toward the output. At the next logical high level, the hold function will be restarted.

Temp

object temperature output temperature

FTC3

Time

Figure 18: FTC3 for Resetting the Peak Hold Function

28

MI

Page 36
Image 36
RayTek MI Miniature Infrared Sensor operating instructions Trigger and Hold Function, Wiring of FTC3 as External Input