2-11
Assemble the Load String
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2. Assemble the mounting screw (A) and washer (B), as shown in the figure.
3. Place the mounting screw and washer assembly into the top of the central bore of the
crosshead.
4. Insert the anti-rotation pin (C) into one of the holes on the bottom of the crosshead.
5. Place the locating ring (D) into the top of the load cell that connects to the crosshead.
6. Place the load cell against the bottom of the crosshead, ensuring that the anti-rotation
pin and locating ring fit securely in place against both the crosshead and load cell. Place
the cable to the left side of the column.
7. Tighten the mounting screw by hand so that it secures to the load cell underneath the
crosshead.
When applying torque to the mounting screw, prevent the load frame from sliding by
holding the crosshead with one hand while applying torque with the other.
8. Set the torque wrench to the value specified in the load cell installation drawing (and in
“Compatible Load Cells for 5940 Frames” on page 2-9) and tighten the mounting
screw.
9. Connect the load cell cable to the
LOAD connector on the controller. Ensure that the
connector is fully engaged in the socket.
10. Press the load cell cable into the clips on the rear of the column cover to prevent it from
interfering with your test.
11. Calibrate the load cell (refer to “Calibrate a transducer” on page 3-6).
12. Leave the system on for at least 15 minutes to allow the load cell circuitry to stabilize.
After this warm-up period, calibrate the load cell again.
Adapters
Adapters let you connect grips or fixtures to the frame when the interfaces have different
connection sizes. There are two types of adapters: base adapters and coupling adapters.
Base Adapters
Base adapters let you connect grips and fixtures to the base of the load frame. All 5940
Series load frames are supplied with a Type O base adapter installed. A Type D base adapter
There are four pin holes on the bottom of the crosshead that let you position the load cell
either straight on or at a 45° angle.
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