SlimLine Force Sensor, Type 9173B to 9177B
Page 10
9173B_002-286e-07.10
A SlimLine sensor consists of two crystal ring washers, an
electrode and a housing with connector.
The force to be measured must be evenly distributed over
the ring surface. The mechanical compressive stress results
in an electric charge being generated in the quartz crystal.
This charge is proportional to the applied force and does
not depend on the dimensions of the quartz washers (lon-
gitudinal piezoelectric effect).
Fig. 2: Schematic section through a SlimLine sensor
Q = Quartz washers
E = Electrode
G = Housing
K = Connector
F = Force acting on force sensor
The generated charge is conducted from the electrode and
supplied to the plug connection. The polarity is chosen so
that a compression force generates a negative charge,
which is then converted into a positive voltage in the char-
ge amplifier. The housing serves as ground connection.
Unloading of the sensor produces a positive charge if the
negative charge generated beforehand by the load is reset
to zero by the charge amplifier being reset.
Connecting several SlimLine sensors in parallel adds the
charges of the individual force sensors and the charge am-
plifier measures the total force.
Summary of Contents for 9173B
Page 1: ...Instruction Manual SlimLine Force Sensor Type 9173B to 9177B 9173B_002 286e 07 10...
Page 2: ...Instruction Manual SlimLine Force Sensor Type 9173B to 9177B 9173B_002 286e 07 10...
Page 27: ...Calibration and Maintenance 9173B_002 286e 07 10 Page 25 Fig 12 In situ calibration procedure...
