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MICRO SWITCH Force Sensors
Force Sensor
FS Series
2 Honeywell Sensing and Control
For application help: call 1-800-537-6945
PERFORMANCE CHARACTERISTICS @ 10
±± 0.01 VDC, 25°C
Preliminary, based on limited test data
Parameter
Min.
Typ.
Max.
Units
Excitation*
10
12
VDC
Null shift, 25 to 0°, 25 to 50°C
± 0.5
mV
Null offset
-30
0
+30
mV
Linearity (BFSL)
± 0.5
% Span
Sensitivity
0.24
mV/grf
Sensitivity shift
25 to 0°, 25 to 50°C
± 5.0
% Span
Repeatability
± 0.2
% Span
Response time
1.0
msec
Input resistance
5.0 K
ohms
Output resistance
5.0 K
ohms
Plunger deflection
30
microns
Weight
2.0
grams
ESD (direct contact - terminals
and plunger)
10
kVolts
* Non-compensated force sensors, excited by constant current (1.5 mA)
instead of voltage, exhibit partial temperature compensation of Span.
ENVIRONMENTAL SPECIFICATIONS
Operating temperature
-40 to +85°C (-40 to +185°F)
Storage temperature
-55 to +105°C (-67 to +221°F)
Shock
Qualification tested to 150 g
Vibration
Qualification tested to 0 to 2 kHz, 20 g sine
Note: All force related specifications are established using dead weight or
compliant force.
ORDER GUIDE
Force
Overforce
Catalog
Range
Span, mV
grams
Listing
(grams)
Min.
Typ.
Max.
FSG-15N1A
1,500
290
360
430
5,500
EXCITATION SCHEMATIC
FS SERIES CIRCUIT
1. Circled numbers refer to sensor
terminals (pins). Pin 1 is
designated with a notch.
Pin 1 = Supply V
S (+)
Pin 2 = Output, (+)
Pin 3 = Ground, (-)
Pin 4 = Output, (-)
2.The force sensor may be
powered by voltage or current.
Maximum supply voltage is not
to exceed 12 volts. Maximum
supply current is not to exceed
1.6 mA. Power is applied across
Pin 1 and Pin 3.
3.The sensor output should be
measured as a differential
voltage across Pin 2 and Pin 4
(V
O = V2 - V4). The output is
ratiometric to the supply voltage.
Shifts in supply voltage will
cause shifts in output. Neither
Pin 2 nor Pin 4 should be tied to
ground or voltage supply.
MOUNTING
The sensor output character-
istics do not change with respect
to mounting orientation. Care
should be taken not to obstruct
the vent hole in the bottom of the
sensor housing. Improper
venting may result in unstable
output.
Mounting bracket mounting
torque: 2-5 in. lb. (,21-,56 Nm).
APPLYING FORCE
Evaluation of the sensor is to
be performed using dead-weight
or compliant force. Application of
a rigid, immobile force will result
in output drift (decrease) as
elastomeric seals relax. Off-
center plunger loading has
minimal effect on sensor
performance and maintains
operation within design
specifications.