Excitation Output - Microedge Instruments iLog Series User Manual

Alarm1 is used as switch of the power supply.

Excitation Output

Excitation output is used when you need to save the electric power of the device that provides
the signal source to the data logger. When there is no local power available and a battery pack is
used to power the transducer, excitation control greatly reduces power consumption. It turns on
the transducer only when it samples the data and turns off the transducer after the sampling.
A2/EXT on the terminal strips can be configured by SiteView software for excitation output
purpose.
The following schematics illustrate the physical connections required to switch on/off an
external battery pack for a 2-wire current loop transmitter:
iLog Data Loggers User's Manual Page 29/63