Instruction Manual

Mode Selector
Back Light
On/Off
Probe Zero
Test Plate for
Zero Adjustment
Equivalent to 0.197"
(5.00 mm) steel
On/Off Switch
Hard-wired cable and probe
LCD Display
Increase Sonic
Velocity
or Thickness
Adjustment
Decrease Sonic
Velocity or
Thickness
Adjustment
Probe
3.0 DESCRIPTION OF GAUGE
3.1 Gauge
3.2 Probe Assembly
Probe Cable: Do not bend sharply.
Do not bring into contact with high
temperature objects (> 60 °C)
TI-44N Operating Instruction Guide
3
APPENDIX
The TI-44N Thickness Gauge is supplied from the factory set for an acoustic
velocity of 5930 m/sec for the measurement of steel. To measure the thickness of
any other material, the acoustic velocity must be changed. When checking the
built-in calibration sample, the gauge will display the “Equivalent Value” listed in
the Table in section 6.1, instead of 0.197" (or 5.0 mm)
ACOUSTIC VELOCITY SELECTION TABLE
Material Acoustic Equivalent Equivalent
Type Velocity Value Value Of
(meters/sec) Of Calibration Calibration Disc
Disc (Inch) Disc (mm)
Aluminum 6260 .208 5.3
Acrylic (Plexiglass) 2700 .090 2.3
Cast Iron 4400-5000 .148 - .168 3.8 - 4.3
Ceramics 10000 .332 8.4
Copper 4700 .156 3.9
Duralumin (17S) 6320 .211 5.3
Ebonite 2500 .083 2.1
Glass 5570 .185 4.7
Nickel 6040 .201 5.1
Polyethylene (Soft) 1900 .063 1.6
Polyvinyl Chloride (PVC) 2300-2500 .077-.083 1.9 - 2.1
Quartz (X cut) 5720 .191 4.9
Stainless Steel (SUS304) 5790 .193 4.9
Stainless Steel (SUS403) 6100 .205 5.2
Stainless Steel (SUS410) 7390 .246 6.2
Steel 5930 .197 5.0
Tin 3320 .110 2.8
Zinc (Zn) 4170 .139 3.5
◆
◆
◆
◆
◆
◆
◆
◆
◆
◆
◆
◆ Denotes one of the 10 preset values in Mode C.
TI-44N Operating Instruction Guide
18