Existing warehouse slab is sufficient
foundation if no major cracks are present. Thus, no
additional costs to the customer.
Calibration by Roberts Calibration Inc, Accredited by A2LA, meets
ASTM E-4 and ISO 7500-1 in accordance with ISO 17025.
Calibration costs are not included outside the United States
and Canada.
For overseas shipments, machines may be built in 38' sections,
for shipment in 40' containers.
Also see our wire rope grips page
which includes specifications.
Standard Model Specifications
Power Unit, 10 HP, 220/440 volts, 26/13a, 3PH, 60HZ
Frame, 40' (12.19m) with manually operated covers.
Maximum pull, pin to pin,(approx) 30' (12.14m)
Outside width 48" (1.22m)
Height from floor, center line, 13.50" (.34m)
Rail height, (step over), 16.50" .42m)
Hydraulic cylinder, 48" stroke (1.22m)
Cylinder Speed (approx) 36"/min (.91m)
adjustable
Manuel load lock for repeat testing.
Load Control semi-Automatic
Load Cell 5 to 1 Design factor
Roberts Proof Test Certificate software (Test 35) with A2D convertor
Serial Cable
Calibration
2,500 to 25,000 lbs.
(1134Kg to 11,340Kg)
25,000 to 250,000 lbs.
(11,340Kg to 113,398Kg)
Features
Tension is supplied by a hydraulic cylinder. For easier and
faster hook up, the cylinder is in the pulling mode.
The movable carriage allows for testing
of different length slings. The
carriage is pinned into these positions through holes in the side
rail.
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 cylinders 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 in small increments with a
constant, steady flow of hydraulic fluid to the cylinder allows
us to calibrate to ASTM E-4, +/- 1% of reading,
traceable to the National Institute of Standards and Technology
(NIST).
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.
Manually operated cover is standard. The cover is counter balanced
for easy opening and closing. Approximately 25 lbs. (11.34 kgs.)
force is required to open or close. (See options for hydraulically
operated cover).
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).
Test 35 software uses a computer as the digital indicator. The
A2D Converter changes the analog signal to digital. The digital
signal is sent to the computer running Test 35. This allows you
to use the computer as the digital indicator, while also being
able to use the word processing function of the computer.
Roberts Proof Test Certificate software (Test 35) automatically
makes .pdf files. The .pdf files (Test Cert) generated by
Test 35 may be printed on any computer with Adobe. This significantly
simplifies file management and distribution of duplicate Certs.
Also, Test 35 need only be operating on a single computer. When
a .pdf of the Cert from a test is made, it can be stored on any
computer.
The separate peak/hold system automatically resets to the desired
test load. With the automatic system, you never lose the peak of
the last test.
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 lower limits. Will calibrate to ASTM E-4, +/-
1% of reading, traceable to NIST.
Standard guarantee: Accuracy of +/- 1%
of reading on digital indicator from 1% to 100 % of the load
cell value and is calibrated and is accurate to very low limits
of the test bed. Compare our lower limits to the competition.
Peak/hold automatic system
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.
Not accurate at low range. Will not calibrate to ASTM E-4.
They guarantee from 5% to 100%, but
the lower 5% of 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
Hydraulically operated cover.
Small cylinder for Testing 1,000 to 25,000 lbs.
(453.6 Kg to 11,340 Kg
Computer with Mircosoft XP software (desk
top or lap top)and printer. Test 35 is included on all
machines.
Additional sections per 20ft (6.09m)
Additional cylinder Stroke per foot (.30m)
Hydraulic guage (6") with Lbs. Force
(back up)
Length measuring system is used to measure
the stretch of a sample while under load. This is similar to, but not quite the same
as, an elongation measurement. The length measuring system
measures the stretch of the full length of the sling while under
a specific load, to calculate headroom whem making a lift. The
includes a length transducer, necessary mounting and electronic
logic to sum total length. A digital display of the length of the
sling may be seen on the computer screen.
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, 10' feet (3.048
metres) wide, 4"(10.16
cm) thick. Commerical warehouse slab with no major cracks
or faults is sufficient for no additional cost tot the customer.
All foundation work, including anchoring points, and anchoring
systems (if required).
All lifting equipment, cranes or lifts of sufficient size for
safe unloading and installation including operators.
All electrical connections and electricians to hook up the electric
motor and controls.
Extra hydraulic oil, equal to AW 46.
Touch up paint, if desired, aftr installation. Sherwin-Williams
5202-14230 or spray 140-0621.
All miscellaneous hand tools including a hammer drill and air
compressor, welder and cutting tools.
250,000 LB. 113,398 Kg 40' Base section