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....Model 3540 Deflection Gages
(Deflectometers) .... |
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Widely
used for measuring deformations in 3 and 4 point bend tests,
on
compression tests and for a variety of general purpose deformations.
These
strain gaged devices come with a magnetic mounting base.
Deflection
is measured with a single arm, with spherical contact
tip, like an electronic dial indicator. The full bridge
strain gaged construction provides an electrical output
compatible with any electronics designed for a strain
gaged transducer.
The magnetic base furnished with the gage can be mounted
to the desired reference surface, whether flat or round.
The tip can then be positioned to measure the deformation
encountered during the test.
All models feature a spring loaded arm that can break
free in the event of excessive travel, protecting the
extensometer from damage. The upper arm exerts a small
spring force against the specimen, which is sufficient
to allow dynamic cyclic testing if desired, yet light
enough in force to avoid influence on the test.
These units come standard with the arm set to measure
downward deflections when oriented in the upright position.
They may be used upside down or in any orientation.
They may also configured with the extensometer arm spring
loaded downward. Specify this if desired. Note that
the travels listed are total travel. |
Features
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General
purpose deflection sensor covers many test requirements.
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Comes
with magnetic base for ease of mounting. |
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High
accuracy |
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Spring
loaded arm pops off to prevent damage from overtravel.
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Comes
with high quality foam lined case. |
Specifications
Full bridge strain gaged
design
Output: 2 to 4 mV/V, nominal
Excitation: 10 VDC typical, up to 15 VDC or VAC max.
Temperature range: standard (-ST) is -40 C to +100 C
Cable: integral ultra-flexible cable, 8 ft (2.5 m) standard
Shunt Calibration Module available |
3540 shown with 4
point bend fixture
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Model 3540 Available
Versions:
ANY combination of travel and temperature
range listed below is available.
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Travel:
(and linearity of output in percent of full scale)
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| METRIC |
USA |
Linearity |
| 1 mm |
0.05 in. |
0.15% |
| 4 mm |
0.15 in. |
0.15% |
| 6 mm |
0.25 in. |
0.2% |
| 12 mm |
0.50 in. |
0.25% |
| 25 mm |
1.00 in. |
0.30% |
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Travel listed above is total travel
(not ±).
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Temperature Ranges:
| Low: -265 to + 100 C (-450 to +210 F) |
| Standard: -40 to +100 C (-40 to +210 F) |
| High 1: -40 to +150 C (-40 to +300 F) |
| High 21: -40 to +175 C (-40 to +350 F) |
Notes:
1Short term use to 200 C (400 F) acceptable
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For
more information on calibration services or digital retrofits
please contact us.
CALIBRATION
SERVICES, INC.
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300 Buttertown Road
Emlenton, PA 16373
(724) 867-6664 or (800) 793-1870
FAX (724) 867-1346
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