Frame 40 feet (12.19m) with hydraulically operated covers
Maximum pull pin to pin (approx.) 28' (8.53 m)
Outside width 58" (1.75m)?
Height for floor, centerline, 14.5"
Rail height (step over) 18.5"
Hydraulic Cylinder Stroke 48" (1.22
m)
Cylinder speed (approx.) 24"/ min
(.6096 m) Adjustable
Manual Load Lock for repeat testing
Load Limit Control semi-automatic
Load Cell 5 to 1 Design Factor
Roberts Proof Test Certificate software (Test 35) with A2D Converter.
Serial cable
Calibration
6,000 to 60,000 lbs 2,722 Kg to 27,216 Kg
60,000 to 600,000 lbs 27,216 Kg to 272,155 Kg
Features
Tension is supplied by a hydraulic cylinder. For easier and
faster hook up, the cylinder is in the pulling mode.
The moveable carriage allows for testing of different sling lengths.
The carriage is pinned into position thru holes on the side rails.
The hydraulic cylinder is built to our specifications for this
application. It is an expensive, top-of-the-line, high pressure
cylinder, and must be compatible with the load cell.
Speed adjustment for the cylinder is another feature. It is a
very simple item, but by incorporating it into the power unit,
we are able to make the cylinder retract at the speed desired.
The foundation of this system is the hydraulic
power unit. Being able to control the hydraulics at small increments
with a constant, steady flow of hydraulic fluid to the cylinder
allows us to calibrate to ASTM E-4, +/- 1%, traceable to the
United States National Institute of Standards and Technology.
Pulsations or fluctuations of pressure will be transferred into
the load cell and give erroneous readings on test data. The power
unit is connected to the test machine by hydraulic hoses.
For repeat testing, a manual loadlock is furnished at no charge.
For testing several items, the operator sets this on the first
test piece. The machine will automatically return to this pressure
load each time a new piece is placed into the machine.
A remote control pendant is furnished at no charge. This allows
for safer, faster, and easier hook-ups.
Hydraulically operater covers.
The load measuring system electronic load
cell is the heart of the system. The load cell allows very accurate
recording of the load attained during a test. The electronic
strain gauge load cell is an independent measuring system not
tied into the hydraulic system. This load cell system, with two
ranges, may be calibrated from 1% to 100% of the maximum capacity
of the load cell. The load cell will calibrate to ASTM E-4, +/-
1%, traceable to the National
Institute of Standards and Technology (NIST).
The separate peak/hold system is an excellent feature. It automatically
resets. The peak/hold recall must be manually reset after each
use. At times, the peak of the last test could possibly be lost
if the peak/recall were not reset before each test. With an automatic
system, you never lose the peak of the last test because it automatically
resets.
The Load Limit Control feature makes it possible to control the
force being applied and the amount of time the test will perform
at that level of force. The Load Limit Control will also let the
operator set the limits of fluctuation of force, so a test will
not be run below a specified force, nor above a specified force.
Value
Our proof testing machinery is the best value
in the industry. We offer more features as standard items than our
competitors. Our test machines are stronger due to the amount of
steel content and design. They calibrate easier and stay in calibration
longer. The differences between Roberts Testing Equipment, Inc. test
beds and the competition are as follows:
Roberts Testing Equipment, Inc.
Safety: Fully enclosed
Load measuring system is an independent electronic load cell
with digital readout (see pressure transducer vs. load cell information
sheet.)
Very accurate low range. Will calibrate to ASTM E-4
Standard guarantee: Accuracy of 1%
of reading on digital indicator from 1% to 100% of maximum
of machine.
Independent system is accurate on break tests.
Competition
Unsafe: Not fully enclosed. Bottom open.
Load measuring system is a pressure transducer, dependent on
the hydraulic pressure, with digital readout
Not accurate at low range. Will not calibrate to ASTM E-4.
They guarantee from 10% to 100%. Lower 10% of maximum range
is not accurate.
Hydraulic pressure transducer is not accurate on break tests
Safety
We also have a standard safety feature which
is a fully enclosed frame including sides, ends, and top. Other manufacturers
do not offer this. With their machines, if an item breaks, the small
pieces will come out from under the sides and out the end of the
test machine. This is why it is important to have the machine totally
enclosed.
Options
Computer with Mircosoft XP software ( desk top or lap top)
and printer. Test 35 is included on all machines
Length measuring system and meter. Length measuring system and
meter to measure stretch of sample. This includes a displacement
transducer, necessary mounting, and electronic logic to sum total
displacement. The separate meter will give a digital display of
the displacement
Installation Requirements
Items furnished by Roberts Testing Equipment:
Design and specifications for the testing machine.
All hydraulic power units, cylinders, load measuring equipment
(i.e., digital readout, load cells, etc.), test machine frame components.
Frame will be sandblasted, primed, and painted.
Advise on installation.
All training for proper use of test equipment.
Operation manuals and maintenance manuals.
Items to be furnished by the customer:
Labor for installation.
Reinforced concrete slab, 15' feet (4.57
meters) wide, 6"(15.24
cm) thick with no major cracks or faults. Existing warehouse slabs
are sufficient.
All foundation work, including anchoring points, and anchoring
systems (if required).
All lifting equipment, cranes and/or lifts of sufficient size
for safe unloading and installation including operators.
All electrical connections and electrician to hook up motor and
controls.
Extra hydraulic oil equal to AW
46.
Touch up paint, if desired, after installation. Sherwin-Williams
5202-14230 or spray 140-0621.
600,000 LB. 272,155 Kg 40' Base Section