Triaxial and Permeability Control Panel

TRIAXIAL/UNCONFINED LOAD FRAMES

This load frame is designed to perform Triaxial and Unconfined testing using carious accessories. A wide selection of strain rates and accessories are available to make this a truly versatile devise. Modifications to meet you lab's specific applications are available upon request.

Construction
The frames are designed around a heavy-duty main frame and precision loading screw. Built to withstand harsh lab environments, the cabinet is constructed with 14 gauge steel and painted with a durable enamel finish. The 1" diameter vertical rods have coarse threads for quick change in cross-arm heights. The nuts and vertical rods are plated for corrosion resistance. A 6" platen and protective boot for the loading screw is standard on all frames.

Electronics
All controls are located on the front panel for easy accessibility. Strain rates are selected by the low and high speed selector switch and the digital selector thumbs wheels located on the front panel. A calibration chart is provided for strain rate selection.

A push-button jog switch, located at the top of the control panel, is used to move the platen up at high speed. A three-position switch (up, down and off) is used to control the platen direction. The switch has a built-in hesitation to prevent damage to the motor when reversing direction.

The maximum platen travel is 76 mm (3") and there are limit switches to prevent over travel. Indicator lights are used to show when upper and lower limits are attained.

Digital readouts, load cells and linear displacement transducers can be added to tie-in with data acquisition systems.

The readouts come standard with analog output for driving strip chart recorders or for feeding directly into data acquisition systems.

Specifications:
Height: 1,194mm (47")
Width: 305 mm(12")
Depth: 610 mm (24")
Cabinet Height: 229mm (9")
Vertical Clearance: 800 mm (31.5")
Horizontal: 168mm (6.6")
Platen: 152mm x 178mm (6"x7")
Net Weight: 165 kg (75 lbs.)
Platen Travel: 76 mm (3")
Voltage: 11 v. 60 Hz
Capacity: 4,000 lbs.

ACM-7530  Triaxial
ACM-7520  Triaxial Unconfined has shorter rods

The Model 3230 Logic Panel combines precise control, logical layout and quality components for use in triaxial, consolidation and flexwall permeability testing of soils. It is designed to function either by itself as a master panel or as an add on to existing panels.

One panel can be set up and used as the master panel and fitted with the optional digital readout for setting pressures. Additional panels can then utilize the readout from the master panel. The cabinet is built to survive laboratory environments and is constructed of aluminum with a hard coat paint and durable screen lettering.

All controls are laid out in a logical order. The upper half of the panel contains controls for air pressures while the lower half contains the water controls. Precision regulators set and control pressures. Whitey ball valves are used for positive shut-off. Two 50 cc burettes, graduated by .1 cc., for flow measurement and two 4 cc pipets, graduated to .008 cc., are also included. These are located inside two storage chambers which have an additional 400 cc capacity each.

Cell water interface utilizes a 20 cc burette. The operator is able to fill and drain the panel and cell conveniently from the front panel. A bias control feature allows the user to set the effective cell pressure and also increase both the cell and sample back pressure using only one regulator. This is useful when saturating the specimen and causes no change in effective stress. It also minimizes air consumption during saturation as only two of the three regulators are utilized at this time.

Easy access air, water, vacuum and drain connectors are located on the rear of the panel. All connections and tubing for the cell are conveniently on the front of the panel.

Specifications:
Width: 21"
Height: 371⁄4"
Depth: 61⁄4"
Pressure:150 psi max
Net Weight: 45 lbs.
Shipping Weight: 65 lbs.
Cell Water Storage: 20cc capacity
Measurement Burets (2): 50cc capacity, 0.1cc resolution
Measurement Pipets (2): 4cc capacity, 0.008cc resolution

ACM-Model 3230M
Triaxial/Permeability Control Panel