innovation performance reliability
DESCRIPTION
The FC21 and FC22 Series Low Cost
Compression Force Sensors create new markets previously
unrealizable due to cost and performance constraints.
This series raises the bar in price and performance. MSI
Sensors’ proprietary MicrofusedTM technology, derived
from demanding aerospace applications, employs micro-
machined
silicon
piezoresistive
strain gages
fused with high
temperature glass
to a high performance
stainless steel substrate.
MicrofusedTM technology eliminates age-sensitive organic
epoxies used in classical load cell designs providing
excellent long term span and zero stability.
Operating at very low strains, MicrofusedTM technology
provides gage factors greater than 100, an essentially
unlimited cycle life expectancy, superior resolution,
exceedingly high over-range margins without the need
for stops and a ratiometric span of up to 4V.
MicrofusedTM sensors are used in a variety of applications
including bathroom scales, paint sprayers and safety-
critical automotive brake sensors.
MSI’s models FC21 and FC22 are appropriate for use in
all types of OEM weighing and force measurement
applications where high reliability and accuracy are
critical. From appliance controls to biomechanical force
feedback, the FC21 and FC22 are the OEM designer’s
dream-come-true: cost-optimized to bring your OEM
products to life whether you need thousands or millions
of load cells annually. Although the standard model is
ideal for a wide range of applications, our dedicated
design team at our Load Cell Engineering Center is ready
to provide you with custom designs for your OEM
applications. The FC21 and FC22 are fully thermally
compensated for changes in zero and span with respect
to temperature and offer normalized zero and span for
interchangeability. Consult MSI for uncompensated super
low cost variants of the FC21 and FC22 instruments.
LOW COST
Compression Ranges: 2, 5, 10, 25, 50 and 100 Lbf.
High Level or Millivolt Outputs
Interchangeable
Compact Easy to Fixture Design
FC21 & FC22 Compression Load Cells
FEATURES
✦Low cost
✦Small size
✦Low noise
✦Robust: high overrange
capability
✦High reliability
✦Low deflection
✦Essentially unlimited cycle
Life expectancy
✦Low off center errors
✦Fast response time
✦From 2 to 100 lb ranges
APPLICATIONS
✦ Medical infusion pumps
✦ Robotics end-effectors
✦ Variable force control
✦ Load and compression sensing
✦ Exercise machines
✦ Pumps
✦ Contact sensing
✦ Weighing
✦ Household appliances
NEW
PRELIMINARY
internet:www.msisensors.com
Tel: 1-757-766-1500
North America Toll Free: 1-800-745-8008
Fax: 1-757-766-4297
RevD 5/3/05
CE compliant per the following specifications:
IEC61000-4-2 [4 KV/4 KV (Air/Contact)]
IEC61000-4-3 (3 V/m)
performance specifications
FC21 & FC22 Compression Load Cells
- 2 -
High Level Amplified Output Millivolt Bridge Version
Standard Ranges: FC21 2, 5 Lbf Compression
FC22 10, 25, 50, 100 Lbf Compression
Maximum over load 250% of range
Recommended Excitation Voltage (Amplified) 3.3 VDC to 5 VDC (1)
Recommended Excitation Voltage (Bridge Only) 5 VDC
Full Scale Output Span (FSO) (Amplified/Ratiometric) 0.5 to 4.5 V at 5 VDC excitation
Full Scale Output Span (Bridge Only) 10 mV/V +/-5%
Output at No Load (Zero output) +/-5% FSO (2)
Combined Non-linearity, Hysteresis and Nonrepeatability <+ /- 1% FSO
Long Term Stability (1 year) + /- 1% Span (Typical)
Temperature Compensation 0 - 50º C
Thermal Zero Shift <+/- 0.05%FSO/ºC
Thermal Sensitivity Shift <+/- 0.05%/ºC
Operating and Storage Temperature Range - 40º C to 85º C
Humidity 0 - 90% RH
Input Resistance (Bridge Only) 8K ohms (nominal)
Output Resistance (Bridge Only) 5K ohms (nominal)
Deflection at Rated Load < 0.05 mm
Isolation Resistance > 50 Mohms@ 250VDC
1) Higher excitation voltages available on request. 2) Lower trim values available on request.
ordering information
Family Body Output Connection - Specials - Range Multiplier Units
Sample PN: FC 21 3 1 - 0000 - 0005 - L
FC21: Compression: Low Range 1= 10 mV/V FSO 1= Cable output Reserved for FC21: 2 and 5 Lbf none L = Lbf
FC22: Compression: > 5 Lbf (100 Lbf 3= 0.5-4.5 V FSO @ custom
maximum) 5 VDC input designs FC22: 10, 25, 50,
100 Lbf N = Newtons
FC21
dimensions
FC22
