Checkline TI-25S User Manual

– 1 –

TABLE OF CONTENTS

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

1.1 Accessories

02.0 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03

2.1 Gauge

2.2 Complete Kit

03.0 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 04

3.1 Keypad

3.2 Display

3.3 Transducer

04.0 Condition & Preparation Of Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 07

05.0 Zeroing The Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 08

06.0 Selecting Material Type (Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 09

07.0 Downloading Custom Calibrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

08.0 Transducer Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

09.0 Making Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

10.0 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

11.0 Appendix A: Application Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

12.0 Appendix B: Sound Velocities Of Common Materials . . . . . . . . . . . . . . . . 17

13.0 Appendix C: User-Selected Material Types. . . . . . . . . . . . . . . . . . . . . . . . . 18

14.0 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

IMPORTANT NOTE:

Inherent in ultrasonic thickness measurement is the possibility that the instrument will
use the second rather than the first echo from the back surface of the material being
measured. This may result in a thickness reading that is TWICE what it should be.
Responsibility for proper use of the instrument and recognition of this phenomenon rests
solely with the user of the instrument.

– 20 –

NOTES

– 2 –

1.0 INTRODUCTION

The TI-25S is ideal for the person who tests a few different materials regularly.
The TI-25S contains 8 common material velocities (see list of materials on
page 9) and two velocities that the user can set using a simple software program.

The tool’s backlit display is easy to read, even in dim light, and the unit operates
for up to 200 hours on a single set of batteries. The TI-25S comes complete,
ready to use, and is protected by our 5-year limited warranty.

1.1 Accessories

NIST-Traceable Steel Test Block - 3 Sizes Available

• Precision Machined and Finished

• Includes NIST-Traceable Report and Test Data

Uncertified Steel Test Block For Ultrasonic Gauges

• For convenient confirmation of thickness gauge
calibration

TICC-M Protective Holder for Ultrasonic Gauges

• Constructed from heavy duty Cordura Nylon

CF12 Coupling Fluid (12 oz. bottle)

• Used to create an ultrasonic coupling between
the probe and material to be measured

V-Block Transducer Holder

• The V-Block transducer holder offers the operator
greater control and repeatabily when measuring on
pipes and other curved areas.

To order, visit, www.checkline.com.

- 19 -

14.0 WARRANTY

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 five years 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 FIVE YEARS 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 five years from the date of invoice.

ELECTROMATIC 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.

– 3 –

2.0 OVERVIEW

2.1 Gauge

2.2 Complete Kit

Probe Receptacles

Probe Zero Test Plate and

Battery Compartment Cover

Backlit LCD
Display

Membrane
Keypad

Probe

The TI-25S is supplied as a complete
kit with the gauge, probe, 4 oz. bottle
of coupling fluid, 2 AA batteries,
NIST Calibration Certificate, and
Operating Instruction Manual—
all in a foam-fitted carrying case.

NOTE: Data cable must be ordered
seprately to program User #1
and #2 customer velocities.

– 18 –

13.0 APPENDIX C: USER-SELECTED MATERIAL TYPES

Each time the “MATL” key is pressed, the material type (the calibration
setting of the accoustic velocity) changes from one type to the other.
The abbreviations, descriptions and sequence is shown below.

NOTE: If the Custom 1 and 2 are needed, they are set using the PC software

(free) and downloaded to the gauge using the data cable (optional,
p/n N-306-0010).

– 4 –

3.0 OPERATION

The TI-25S interacts with the operator through the
membrane keypad and the LCD display. The functions
of the various keys on the keypad are detailed below,
followed by an explanation of the display and its
various symbols.

3.1 The Keypad

This ON/OFF key is used to turn the TI-25S on and off. When
the gauge is turned ON, it will first perform a brief display test by
illuminating all of the segments in the display. After one second,
the gauge will display the internal software version number. After
displaying the version number, the display will show “0.000” (or
“0.00” if using metric units), indicating the gauge is ready for use.

The TI-25S is turned OFF by pressing the ON/OFF key. The gauge
has a special memory that retains all of its settings even when the
power is off. The gauge also features an auto-powerdown mode
designed to conserve battery life. If the gauge is idle for 5 minutes, it
will turn itself off.

The MAT’L key is used to toggle through the 8 hard set and 2 user
programmed material types. When this key is pressed, the abbreviat­ed material name will be displayed followed by the material velocity
for that specific material. The two user-defined material locations
will display “Usr 1” and “Usr 2” respectively.

NOTE: The material velocities in the TI-25S are approximate

velocities only. Materials of the same type may have
slightly different material velocities introducing error into
the overall measurement.

NOTE: The material types hard set in the TI-25S are listed by

type, abbreviation, and velocity on the back of the TI-25S.

The PRB-0 key is used to “zero” the TI-25S in much the same way
that a mechanical micrometer is zeroed. If the gauge is not zeroed
correctly, all of the measurements that the gauge makes may be in
error by some fixed value. Refer to page 8 for an explanation of this
important procedure.

The IN/MM key is used to switch back and forth between English
and Metric units. This key may be used at any time, whether the
gauge is displaying a thickness (IN or MM) or a velocity value
(IN/µs or M/s).

ON

OFF

MAT’L

IN

MM

PRB

0

– 17 –

Aluminum 0.2500 6350
Bismuth 0.8600 2184
Brass 0.1730 4394
Cadmium 0.1090 2769
Cast Iron 0.18000 4572
Constantan 0.2060 5232
Copper 0.1840 4674
Epoxy resin 0.1000 2540
German silver 0.1870 4750
Glass, crown 0.2230 5664
Glass, flint 0.1680 4267
Gold 0.1280 3251
Ice 0.1570 3988
Iron 0.2320 5898
Lead 0.8500 2159
Magnesium 0.2280 5791
Nickel 0.2220 5639
Nylon 0.1020 2591
Paraffin 0.0870 2210
Platinum 0.1560 3962
Plexiglass 0.1060 2692
Polystyrene 0.0920 2337
Porcelain 0.2300 5842
PVC 0.0940 2388
Quartz glass 0.2220 5639
Rubber, vulcanized 0.0910 2311
Silver 0.1420 3607
Steel, common 0.2330 5920
Steel, stainless 0.2230 5664
Stellite 0.2750 6985
Tin 0.1310 3327
Titanium 0.2400 6096
Tungsten 0.2100 5334
Zinc 0.1660 4216

Water 0.058 1473

Material Velocity Velocity

Type Inches/µs Meters/s

Notes: 1. These values are to be used only when a suitable sample of known

thickness is not available for calibrating, as slight variations in material
composition, finishing (hardening, polishing, etc.) or shape can affect the
acoustic velocity.

...

Notes: 2. “✔ ” denotes the factory default setting for acoustic velocity.

✔

12.0 APPENDIX B: SOUND VELOCITIES OF COMMON MATERIALS