User Manual

Extech Instruments
62 TKG250- EN V2.4 11/13
You will see curr. for current file and prev. for the previous file. You can also choose if
you want to display the differential value as an absolute reading or as a percent %. Under
the Menu OK, measurement screen you can also go to alarm and choose to alarm on
compared file where the gauge will prompt you to enter either a % or absolute reading for
wall loss or growth based on the change at the same id of the current file to the previous
file. Growth, although not very common can mean either a bad previous reading, scale
build up or temp. change affecting sound velocity on a previous reading. In the alarm file
compare screen, you can even enable the vibrate feature.
Alarm file compare Alarm Absolute loss and growth
Alarm % loss and growth