ATS 2140-M Series, Instruction Manual

Page: 98 / 115

98
8.2.3 Series 4124A Creep Extensometer Frame Assembly
1. Lay extensometer flat on a work bench with Crosshead Halves facing upward.
2. Remove Crosshead Clamping Nuts and Crosshead Halves. Leave Clamping Bolts in place.
3. Verify that extensometer is equipped with proper size extensometer inserts to fit specimen
shoulder groove, v-ridge or gage diameter.
4. Set the specimen onto the back half of the extensometer inserts taking care to properly engage
the specimen groove or v-ridge. If attaching directly to the specimen gage diameter, verify proper
gage length between extensometer inserts.
5. Install Crosshead Halves, taking care to properly engage the specimen groove or v-ridge.
6. Reinstall Crosshead Clamping Nuts and lightly tighten.
7. Adjust location of Extensometer Rod Guide if needed. The Extensometer Rod Guide must be
located far enough below the furnace to prevent heat damage.
8. Adjust location of gauging platforms if needed.
9. Attach Series 4031A Threaded Couplings and Series 4043 Pull Rods onto specimen.
10. Install Series 4021 Knife Edge Coupling Quick Change Nuts to the outer end of each Pull Rod.
11. Install assembled load train/extensometer into test machine.
12. Apply a slight preload to the load train assembly.
13. Verify the specimen is properly attached to the Extensometer. Tighten the Crosshead
Clamping Nuts.
14. Attach displacement-measuring devices to Lower Gauging Platforms.