Checkline TI-44N User Manual

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TABLE OF CONTENTS

01.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 02

02.0 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 02

03.0 Description of Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 03

04.0 Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 05

4.1 Units of Measure

4. 2 Installing the Battery

4.3 Turning the Power On

4.4 Turning the Power Off

4. 5 Using the Built-in Calibration Disc

4.6 Using Couplant Fluid

05.0 Quick Start Instructions - Steel . . . . . . . . . . . . . . . . . . 07

06.0 Setup for Measuring Thickness

of Materials Other Than Steel . . . . . . . . . . . . . . . . . . . . 008

7.1 Acoustic Velocity Selection Table

7.2 Setup of Gauge When Acoustic Velocity is Unknown

7.3 Changing Modes

7.4 Thickness Measurement Methods

07.0 Taking Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . 13

8.1 Notes on Measurements

8.2 Preparing the Surface For Measurement

8.3 Measurement of Pipes or Cylindrical Objects

08.0 Trouble-Shooting Guide . . . . . . . . . . . . . . . . . . . . . . . . 15

09.0 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

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NOTES

1.0 INTRODUCTION

The CHECK•LINE® TI-44N Thickness Gauge measures the wall thickness of metals,
glass, ceramics and many rigid plastics. This gauge uses the “pulse-echo“ principle
of ultrasonic testing where a short ultrasonic signal is transmitted from the probe.
The signal travels through the measurement sample until it is reflected back towards
the probe from the back side of the material. The elapsed time for this complete
cycle is measured and converted into an accurate thickness reading.

The gauge can be used to measure the extent of corrosion on the opposite, inaccessi­ble side of the wall by using the “Subtractive Method.” When the thickness of the
original wall is known, subtracting the thickness reading obtained from the TI-44N
gauge will determine the extent of corrosion at the point of probe placement. If the
original wall thickness is not known, test readings should be made along a grid of
equally-spaced points to obtain a profile of thickness readings. The smallest thick­ness reading will locate the area of greatest corrosion.

The gauge is supplied from the factory set for an acoustic velocity of 5930 m/sec to
measure steel. The acoustic velocity is easily changed to accurately measure materi­als other than steel. Refer to section 6.3 Changing Acoustic Velocity and section

6.1 the Acoustic Velocity Selection Table. The TI-44N gauge measures thickness in
either Inch (factory default) or mm units. To change units of measure,refer
to section 4.1.

The TI-44N is supplied as a complete kit, including the gauge with wrist-strap,
probe and cable assembly, a 2-ounce bottle of coupling fluid (couplant) and a
AA battery — all supplied in a fitted, hard-plastic carrying case.

2.0 PRECAUTIONS

1. The probe surface is fabricated from acrylic resin and care should be taken to
insure that it is not scratched by sliding over rough surfaces. The probe should
be placed down for measurements and lifted vertically when complete. Do not
slide over rough surfaces.

2. Do not use this gauge where material temperatures exceed 140 °F (60 °C) as the
probe will be damaged. Use the CHECK•LINE Model TI-25H High Temperature
Thickness Gauge for these applications.

3. Keep the gauge free of dust (especially metal powders, carbon, etc.) as they will
damage the PC Board. Use a damp cloth to clean the gauge after use. DO NOT
USE CHEMICAL SOLVENTS OF ANY KIND.

TI-44N Operating Instruction Guide

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ELECTROMATIC Equipment Co., Inc. (ELECTROMATIC) warrants to the
original purchaser that this product is of merchantable quality and confirms
in kind and quality with the descriptions and specifications thereof. Product
failure or malfunction arising out of any defect in workmanship or material in
the product existing at the time of delivery thereof which manifests itself
within one year from the sale of such product, shall be remedied by repair or
replacement of such product, at ELECTROMATIC’s option,except where unau­thorized repair, disassembly, tampering, abuse or misapplication has taken
place, as determined by ELECTROMATIC. All returns for warranty or non-war­ranty repairs and/or replacement must be authorized by ELECTROMATIC, in
advance, with all repacking and shipping expenses to the address below to be
borne by the purchaser.

THE FOREGOING WARRANTY IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING BUT NOT

LIMITED TO, THE WARRANTY OF MERCHANTABILITY AND FITNESS FOR
ANY PARTICULAR PURPOSE OR APPLICATION. ELECTROMATIC SHALL
NOT BE RESPONSIBLE NOR LIABLE FOR ANY CONSEQUENTIAL DAMAGE,
OF ANY KIND OR NATURE, RESULTING FROM THE USE OF SUPPLIED
EQUIPMENT, WHETHER SUCH DAMAGE OCCURS OR IS DISCOVERED
BEFORE, UPON OR AFTER REPLACEMENT OR REPAIR, AND WHETHER OR
NOT SUCH DAMAGE IS CAUSED BY MANUFACTURER’S OR SUPPLIER’S
NEGLIGENCE WITHIN ONE YEAR FROM INVOICE DATE.

Some State jurisdictions or States do not allow the exclusion or limitation of
incidental or consequential damages, so the above limitation may not apply
to you. The duration of any implied warranty, including, without limitation,
fitness for any particular purpose and merchantability with respect to this
product, is limited to the duration of the foregoing warranty. Some states do
not allow limitations on how long an implied warranty lasts but, not with­standing, this warranty, in the absence of such limitations, shall extend for
one year from the date of invoice.

ELECTROMACTIC Equipment Co., Inc.
600 Oakland Ave. Cedarhurst, NY 11516—USA
Tel: [phone]/ Tel: [phone]/ Fax: [phone]

Every precaution has been taken in the preparation of this manual. Electromatic Equipment Co., Inc.,
assumes no responsibility for errors or omissions. Neither is any liability assumed for damages resulting
from the use of information contained herein. Any brand or product names mentioned herein are used
for identification purposes only, and are trademarks or registered trademarks of their respective holders.

WARRANTY

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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)

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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.

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3.3. Complete Kit

3.4 Battery Compartment

3.5 LCD Display

Units of Measure
Selector Switch

Gauge

Coupling Fluid

Operating Instructions

Probe/Cable Assembly

Battery

Probe selection switch
set on FIXED

Bottom of gauge

Use AA-type alkaline battery

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9.0 SPECIFICATIONS

Range (steel) Flat plate 1.00 to 199.99

mm

Pipe 30 in. diameter and 1.50 in. thickness or more

Accuracy

(mm)

±0.02

Errors

(mm)

1.00 to 99.9 ±0.05

100.00 to 199.99 ±2% / rdg

Probe (standard) 5Z10NDT-Ma

Probe Cable HF coaxial cable: 1.5 D-QEVX2C, 1.0m

Object Material Iron, steel, aluminum, any other metal, hard plastics,

glass and ceramics

Sonic Velocity 1,000 – 12,000 m/s
Adjustable Range (10 predefined sonic velocities stored in gauge)

Display Digital LCD display with backlight

Display Resolution 0.01

mm

(1.00mmto 199.9mm)

Display Frequency Approx. 3 times / sec

Digits 4-1/2 (max 19999) the upper digit displays 1 only

Start-up Time Approx 2 Sec.

Power Supply 1 AA-type alkaline battery, 1.5 V

Operating Time >30 hours continuous operation

Usage: 2 sec. measurement followed by 10 sec
standby

Test Panel for 5.00 mm thickness for steel (sonic velocity 5930 m/s)
Zero Adjustment come standard with gauge

Weight Meter: approx 150 g. Probe: Approx. 50 g

Dimensions 69 (W), 144 (L), 30 (H) mm

Operating Temperature -5 °C to 55 °C

Storage Temperature -10 °C to 55 °C

Warranty Meter: 1 year. Probe: 90 days

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