Force Sensor - ELPF Series0 pages

Compact Tension/Compression Design
Ranges: 10 through 500 lbf
High Level and Millivolt Output
High Stability
Industry Standard Packaging
Resists Off Axis Load Components
Full NIST Traceable 11 Point Calibration
Shielded Teflon Cabling with Strain Relief
DESCRIPTION
The ELPF series tension/compression load cells raise the bar
for high performance at low cost. Measurement Specialties
proprietary Microfused™ technology, derived from
demanding aerospace applications, employs micro-machined
piezoresistive strain gages fused with high temperature glass
to a high performance stainless steel force measuring flexure.
Microfused™ technology eliminates age-sensitive organic
epoxies used in traditional load cell designs providing
excellent long term span and zero stability. Operating at very
low strains, Microfused™ technology utilizes strain gages
providing gage factors greater than 100, an essentially
unlimited cycle life expectancy, superior resolution,
exceedingly
high overrange
capabilities
(without the
need for stops)
and an amplified
ratiometric high
level 0.5 to 4.5 V
output or 20 mV/V
bridge output. Microfused™
sensors are ideal for your test and measurement applications.
Measurement Specialties’ ELPF Test and Measurement series
sensors, unlike most competitve designs, are provided with a
"four-bar" design where a flexible diaphragm parallels the
measuring flexure. This configuration is far less susceptible to
off-axis load components than single diaphragm traditional
designs. Shielded, teflon insulated instrumentation cabling is
provided along with spring steel strain reliefs and full NIST
traceable calibration certificates. The ELPF unit is fully
thermally compensated and will provide an essentially
unlimited cycle life expectancy. The ELPF can be configured
with a variety of options to fine tune the instrument to
your application: select from several standard package
geometries, compensated temperature ranges, input
voltages, lead lengths or specify entirely unique
combinations of these options.
FEATURES
Low Cost
Optional High Level Output
Small, Low Profile Design
Low Noise
Robust: High Overrange
High Reliability
Low Deflection
Low Off-Axis Response
Fast
Essentially Unlimited Cycle Life
APPLICATIONS
Theatrical Rigging Loads
Assembly Forces
Weighing
Tool Forces
Thrust Measurements
Batch Weighing
Robotics End Effectors
Product Validation Testing
Medical Instruments
Hoist and Winch Loads
Measurement Specialties, Inc. 1000 Lucas Way Hampton, VA 23666 USA www.meas-spec.com 757-766-1500 800-745-8008 Fax 757-766-4297
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Note: Positive output in tension.
Note: Re: Zero output: Lower trim values available on request.
Note: Laser welded stainless steel body construction. Spring strain relief and shielded teflon cable
provided standard.
Note: Unique 4 bar linkage design provides resistance to off axis load components.
ELPF Load Cell
standard performance parameters:
Maximum over load: 250%
Recommended Excitation: 5 Vdc
Output Span (Amplified/Ratiometric): 0.5 to 4.5 V +/-3% of Span at 5 Vdc Excitation
Output span (Bridge Output): 20 mV/V +/- 5%
Output at No Load (Zero Output): +/- 5% FSO
Nonlinearity: +/ - 0.25% FSO
Hysteresis: +/- 0.25% FSO
Temperature Compensation 20 -80ºC
Thermal Zero Shift +/- 0.01% FSO/ºC
Thermal Sensitivity Shift: +/- 0.01% /ºC
Operating Temperature Range: -40ºC to 120ºC
Impedance In (Bridge Only): 3 K ohm nominal
Impedance Out (Bridge Only): 2.2 K ohm nominal
Deflection at Rated Load < 0.05 mm nominal
Isolation Resistance: > 50 Megohm nominal at 250 Vdc
Cycle Life Expectancy: Essentially Unlimited
PRELIMINARY
PRELIMINARY