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Chatillon ET1100 Universal Electronic Tester
The Chatillon ET1100 is a motorized,
microprocessor based universal electronic tester designed for testing
compressive/tensile strengths, yield, and breaking strengths of various
specimens to it's capacity of 1100 lb. (500 kg, 5000 N). Its features
include programmable set points; for maximum efficiency of repetitive
testing in manual, or automatic cycling mode.
Specifications:
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D.C. Gearmotor with tachometer feedback
and dynamic braking assures constant speed regardless of loading.
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Strain gage load cell : Mounted to the
top bar of the loading frame, it produces an electrical signal
proportional to the applied force in compression or tension . An
adjacent mounted pre-amp amplifies the signal to the microprocessor in
the control section of the tester. Force calibration is accessible
through the pre-amp.
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Precision ball screws and rotary
optical encoder : The screws are motor driven by means of a gear
pulley/timing belt system. One revolution of the screws produces
1/4" travel of the ram (0.250" pitch). One screw is equipped
with an anti-backlash assembly. The rotary optical encoder, mounted to
the same screw, generates 250 pulses for each revolution and also
indicates the direction of travel.
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Microprocessor, and associated digital
displays: The signals from the load cell (force) and the optical
encoder (deflection), are transmitted to the microprocessor for the
necessary digital manipulations. It also compensates for the
deflection of the load cell I and the test frame.
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Control panel: The front panel
incorporates convenient push buttons for the following functions :
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Set Points: High and low set points for
either force or deflection may be entered to establish predetermined
limits and for repetitive testing in manual or automatic cycling mode.
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Tension/Compression : (T/C) for
selecting test mode .
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Units of Measurement :
Force:Pounds (lb), Kilograms (kg), or Newtons
(N)
Deflection:Inches (in), or millimeters (mm)
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High Range :100%
of load cell capacity
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Low Range :20%
of load cell capacity (with increased resolution)
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Zero:For force
and deflection separately ; to establish reference points, or tare outspecimen and fixture weights.
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Max Hold :For
force and deflection; holds force display alone, or both force and
deflectiontogether, when force starts to
diminish from current value.
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Max Recall:For
recalling a maximum force reading and the deflection at which it
occurred,over a series of individual tests.
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Max Clear:Clears
previously stored maximum values.
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First Peak: Used for testing materials
which exhibit an early yield, and then recover (notablyplastics).
Pressing "FIRST PEAK" will display both force and deflection
of the firstyield point. The amount of first
peak capture is user selectable through internalswitches.
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