innovation performance reliability
DESCRIPTION
The FT24 Series Low Cost Tension 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 process
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 model FT24 is appropriate for use in all types
of OEM appliance applications where high reliability
and durability are critical. The FT24 is 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 FT24 is
fully thermally compensated for changes in zero and
span with respect to temperature and offers
normalized zero and span for interchangeability.
Consult MSI for uncompensated super low cost
variants of the FT24 load cell.
LOW COST
Tension Ranges: 2, 5, 10, 25, 50, 100 Lbf.
High Level or Millivolt Outputs
Interchangeable
Compact Easy to Fixture Design
FT24 Tension Load Cells
FEATURES
✦Low cost
✦Small size
✦Low noise
✦Robust: high over range capability
✦High reliability
✦Low deflection
✦Low off center errors
✦Fast response time
✦Essentially unlimited cycle life
✦From 2 to 100 lb ranges
APPLICATIONS
✦ Appliance payload weight
✦ Variable force control
✦ Pulley tension loads
✦ Light hoist and winch loads
✦ Weighing
internet:www.msisensors.com
Tel: 1-757-766-1500
North America Toll Free: 1-800-745-8008
Fax: 1-757-766-4297
RevB 5/3/05
NEW
CE compliant per the following specifications:
IEC61000-4-2 [4 KV/4 KV (Air/Contact)]
IEC61000-4-3 (3 V/m)
PRELIMINARY
performance specifications
FT24 Tension Load Cells
- 2 -
High Level Amplified Output Millivolt Bridge Version
Standard ranges: FT24 2, 5, 10, 25, 50, 100 Lbf Tension
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
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@250 VDC
dimensions
ordering information
Family Body Output Connection - Specials - Range Multiplier Units
Sample PN: FT 24 3 1 - 0000 - 0005 - L
FT24: Tension 1= 10 mV/V FSO 1= Cable output Reserved for FC24: 2, 5, 10, none L = Lbf
3= 0.5 - 4.5 V FSO custom 25, 50, 100 Lbf N = Newtons
@ 5 VDC input designs
1) Higher excitation voltages available on request. 2) Lower trim values available on request
