SECTION 5
SOLVING PROBLEMS
5.4 Deformed or Broken Thermocouple
70
1
Make a tool by cutting a thin sliver or wedge
from a sheet of ordinary paper.
2
Work the pointed end of the paper sliver under
the thermocouple wire.
3
Use the paper sliver to lift and reshape the
thermocouple. The paper sliver is sufficiently
flexible to avoid undue stress on the thermo-
couple wires. Shape the thermocouple to a
rounded arch that is perpendicular to the sur-
face of the TC mount, as illustrated. The junc-
tion (bead) should be at the high point of the
arc.
4
Thoroughly clean the thermocouple (Section 4)
before reinstalling the TC head.
Broken Thermocouple
Usually, a broken thermocouple is readily evident,
especially under a microscope. On rare occasions,
the thermocouple may have an intermittent electrical
connection that will cause highly erratic behavior in
the osmometer. A break at either of the thermocou-
ple connection points may require meticulous
inspection to discover. A broken thermocouple
requires replacement of the TC head. Contact your
dealer or Wescor for assistance.
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