5
Sensor I® Expert User Manual

Functions of Components

Expert 125, 250 and 400 Models

Wrench Housing
Incorporates all the electronics and digital display.
Wrench Handle
Houses the charger/data port connector for battery charging and serial
port communications.
Wrench Head
Contains the angle reference arm potentiometer (EA-models) and ratchet
head. The wrench head can be indexed 600 either side of the wrench body
for ease of reading the display.
NOTE
Factory Calibration of models 125, 250 and 400 was conducted with the
wrench head in the normal, non-indexed position. This position is
recommended where high accuracy of angle values is required. If the
wrench is to be used in the ±60o indexed position and angle accuracies
equal to or better than ±10% are required, then recalibration of angle
in the indexed position is recommended.
Torque accuracy remains unaffected by indexing the wrench head.