TomTom Inductive Distance Measurement Tool Kit II User Manual page 19

 Page 19
Sensor Size:
In this application it is also recommended to use the smallest possible sensor to have the highest
accuracy. Unfortunately often is the sensor range not sufficient, hence a bigger sensor with more
range has be used, especially on kilns.
Note:
The surface which gets measured has to be bigger than the sensor diameter, in order to get the
correct distance value (see picture below). On small surface use small sensor, otherwise the error
has to be evaluated case by case and corrected in the sensor scaling.
Correct
induction field
Sensor
Ø12mm
Kiln
Girth Gear
IDM
Controller
Girth Gear
Inductive
Sensor
Magnet
Stand
Too big
induction field
Sensor
Ø30mm
Kiln
Girth Gear
Inductive
Sensor
April 4, 2022
Magnet
Stand