Checkline TI-25LT User Manual

Page 4

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3.2 Contents Of Kit

The TI-25LT is supplied as a complete kit with the following:
a. Gauge
b. Two (2) AA batteries

(installed in gauge)

c. Probe/cable assembly
d. 4 oz. Bottle of coupling fluid
e. NIST-traceable calibration

certificate

f. Operating instruction manual
g. Foam-filled carrying case

3.3 Probe

The probe transmits and receives the ultrasonic sound waves which the
TI-25LT uses to calculate the thickness of the material being measured. The
probe must be used correctly in order for the TI-25LT to produce accurate
and reliable results.

A small amount of “coupling” fluid, commonly called “couplant” is used
to insure that there are no air gaps between the probe and the material sur-
face. Grasp the probe by the molded rubber grip and place it on top of the
material surface. Apply moderate pressure to the top surface of the probe
with your index finger (A) or thumb (B) to stabilize the probe and to keep
the wearface seated flat against the measurement surface.

Probe
Wearface

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2. Remove the probe from the hot surface immediately after a “stable”

reading is displayed. Even though the High Temperature Probes are
constructed using materials which can withstand high temperatures,
the probe can begin to heat up, through thermal expansion and
other effects, adversely affecting the accuracy of the measurement.