Existing warehouse slabs are sufficient foundation, if no
major cracks are present, thus No additional cost 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 United States and
Canada.
For overseas shipment, machine may be built in 38' sections,
for shipment in a 40' container.
Also see our wire rope grips page
which includes specifications.
Standard Model Specifications
Power Unit, 7.5 hp, 220/440v, 26/13a,
3PH, 60 Hz
Frame, 40' (12.19m) with manually operated safety cover
Maximum pull, pin to pin, (approx) 31' (9.45m)
Outside width (approx) 48" (1.22m)
Height from floor, center line, 13.50" (.34m)
Rail height (step over) 16.50" (.42m)
Hydraulic Cylinder, 48" (1.22m) Stroke
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
1,500 lbs to 15,000 lbs 680.4g
to 6803.9 Kg
15,000 lbs to 150,000 lbs 6803.9 Kg to 68,039 Kg
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
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 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).
A remote control pendant is furnished
at no charge. This
allows for safer, faster, and easier hook-ups.
For repeat testing, a manual loadlock is furnished at no charge.
For testing several times, 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.
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 is an electronic
load cell and is the heart of the system. The electronic strain gauge load cell
is an independent measuring system separate from the hydraulic
system. This load cell system 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% of reading, traceable to the
National Institute of Standards and Technology (NIST).
Test35 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 Test35. 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) generarted
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 file of the Cert from a test is made it can be stored on
any computer, including network and Web servers. It cn also
be printed on any computer that has Adobe Reader software installed.(
a free download)
The computer screen has two displays, live load and peak
load. The live load is the actual load of the item being
tested. The peak load is the maximum load to which the item
has been subjected.
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 in Test35
makes it possible to control the force being applied and the
amount of time the proof test will be held at that level of force. The machine
will automatically return to this load each time a new piece is
placed into the machine. This feature is very useful for
repeat tests of similar item and for holding a proof test for long
periods of time.
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. The test range is 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 limits. Will not calilbrate to ASTM E-4.
They gurantee from 5% to 100%, but the lower 5% of the range
is not accurate.
Hydraulic pressure transducer is not accurate on break tests.
Safety
We also have a standard safty feature which is
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), Cylinder stroke 48" (1.22m)
Computer with Mircosoft XP software (desk top or lap top) and
printer. Test 35 is included on all machines.
Additional Sections per 20ft (6.09 m)
Additional Cylinder Stroke per Foot (.30m)
Hydraulic Gauge (6") with Lbs. Force
(back-up unit)
Calibration, Training & Advise on
Installation on shipments outside the United States and Canada.
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 lenght measuring system
measures the stretch of the full length of the sling while under
a specific load, to calculate headroom when making a lift.
This includes a lenght 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.)and test machine frame
components. Frame will be sandblasted, primed, and painted.
Advice 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 meters)wide, 4 inches
(10.16 CM) thick. Commerical warehouse slab with no major cracks
is sufficient for no additional cost to the customer.
Anchoring bolts ( 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 the electric
motor and controls.
Extra hydraulic oil,as needed, equal to AW 46.
Touch up paint, if desired, after installation. Sherwin-Williams
5202-14230 or spray 140-0621.
All miscellaneous hand tools including a hammer
drill and air compressor, welder and cutting torch.
150,000 LB. 68,039 KG, 40' Base section