Checkline TI-25M User Manual

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TABLE OF CONTENTS

1.0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.0 Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

3.0 Overview of Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3.1 Gauge

3.2 Contents of Kit

3.3 Probe

3.4 Keypad

3.5 LCD Display

3.6 Probe Zero Plate

3.7 Probe Connector Receptacle

3.8 Battery Compartment (Battery Replacement)

4.0 Getting Started. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.1 Connecting The Probe

4.2 Turn On The Power

4.3 “Zeroing” The Probe

4.4 Changing Units — inches to mm

4.5 Checking Calibration With The Test Plate

4.6 Preparation Of The Surface

5.0 Quick Start Instructions — Steel Thickness . . . . . . . . . . . . . . 12

6.0 Calibration For Measuring Thckness

Of Materials Other Than Steel . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.1 Acoustic Velocity Table

6.2 Changing Calibration — Acoustic Velocity is Known

6.3 Changing Calibration — Acoustic Velocity is Not Known

6.4 Changing Calibration — Two-Point Calibration Procedure

7.0 Description of Measuring Modes . . . . . . . . . . . . . . . . . . . . . . . . 18

8.0 Measuring Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

8.1 General Notes On Measurements

8.2 Measurements Of Pipes Or Cylindrical Parts

8.3 Measurements On Materials At High Temperatures

9.0 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

10.0 Material Safety Data Sheet (MSDS) . . . . . . . . . . . . . . . . . . . . . . 23

11.0 Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

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11 .0 WARR A NT Y

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.

OI-UT507-25M

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1.0 INTRODUCTION

The CHECK•LINE®TI-25M Ultrasonic 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 the complete cycle is measured and
converted to an accurate thickness reading.

The TI-25M 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-25M 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
the thickness readings. The smallest thickness reading will locate the area of
greatest concern.

The TI-25M is factory-set to measure steel. The gauge can be easily adjust­ed for accurate thickness readings on other materials. Refer to sections 6.0
through 6.3. To change the measuring units from inch (factory setting) to
mm refer to section 4.4.

2.0 PRECAUTIONS

Do not use the standard probe in applications where material temperatures
exceed 200 °F (100 °C) as the probe will be damaged. Special High
Temperature Probes should be used. Consult factory.

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

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10 .0 MAT E R I A L SAF E TY DATA S HEE T (MSDA )

Section 1— Product Identification

Product Name: TI-25M Generic Name: Ultrasonic Couplant
Manufacturer: Electromatic Equpt. Co. NFPA Hazardous Materials Identification System (est)

Health 0 Flammability 0 Reactivity 0

Section 2— Hazardous Ingredients

This material does not contain any ingredients having known health hazards in concentrations
greater than 1%. This material does not contain any known or suspected carcinogens.

Section 3 — Physical Data (nominal)

Boiling Point: >220°F Freezing Point: <20°F
Vapor Pressure: N/A Evaporation Rate: N/A
Specific Gravity: >1.0Z Solubility in Water: complete
pH: 7.35 – 7.9 Acoustic Imp.: 1.726x10

6

Vapor Density: N/A Appearance and Odor: water white, opaque gel; bland odor

Section 4 — Fire and Explosive Hazard Data

Flash Point: none Upper Exposure Limit: none Lower Exposure Limit: none
Special Fire Fighting Procedures: N/A Extinguishing media: N/A
Unusual Fire and Explosion Hazards: none

Section 5 — Reactive Data

Stability: Stable Conditions to Avoid: none
Incompatibility (Materials to Avoid): none known
Hazardous Polymerization: will not occur
Hazardous Decomposition or Byproducts: none known

Section 6 —- Health Hazard and First Aid Data

Routes of Entry

1

:

Skin: not likely Ingestion: not normally Eyes: not normally Inhalation: no

Effects of Overexposure:

Acute: May cause temporary eye irritation Chronic: none expected

First Aid Procedures:

Skin: Remove with water if desired. Eyes: Flush with water for 15 minutes.
Ingestion: For large quantities, induce vomiting and call a physician Inhalation: N/A

Section 7 - Storage and Handling Information

Precautions to be taken in handling and storage: Store between 20 °F and 120 °F. Spills are
slippery and should be cleaned up immediately. Steps to be taken in case material is released or
spilled: Pick up excess for disposal. Clean with water. Waste disposal method: Dispose of in
accordance with federal, state, and local regulations.

Section 8 — Control Measures

Respiratory Protection: not required Ventilation: not required
Protective Gloves: on individuals demonstrating sensitivity to TI-25M
Eye Protection: as required by working conditions Other Protective Equipment: not required

1. TI-25M contains only food grade and cosmetic grade ingredients.

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3.0 OVERVIEW OF GAUGE

3.1 Gauge

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9.0 SPECIFI C AT I O NS

Range* 0.025–6.00" (0.60–150.0 mm)

Other ranges available with optional probes.

Resolution .001" (0.01 mm)
Display 4

1

⁄

2

-Digit, 0.5" Backlit LCD

Velocity
Range 6500–33,000 ft./sec.(2000–10,000 m/sec.)

Probe 7.5 MHz, 0.25" Diameter (6.35 mm)

with rubber molded grip.

Probe
Wearface PEEK (Polyethylethylkeytone)

Cable 4 ft. (1.2 m) waterproof cable with non-polarized,

quick-disconnect connectors. Optional lengths up to
100 ft. (30 m).

Probe Zero Steel plate built into battery cover, approximate thickness
Test Plate of 0.416" (10.57mm).

Temp. Limits Ambient

: –20 to 120 °F (–30 to 50 °C)
Material: 0 to 200 °F (–20 to 100 °C)
Special high temperature probes are optionally available.

Battery Type Two AA batteries
Battery Life 200 hours
Weight 7 ounces (196 g)
Size 3.25 x 6.00 x 1.35"

(82.5 x 152.4 x 34.3 mm)

Accessories
Included Probe/cable assembly. 4oz. bottle of coupling fluid,

NIST Calibration Certificate, 2 AA batteries, operating
instructions, hard-plastic carrying case.

Warranty Gauge

: 5 years

Probe: 90 days

*Measuring Range indicated is for steel. Actual range for other materials will vary
based upon the material’s sonic velocity and attenuation.

Probe

Receptacles

Probe Zero Test Plate and

Battery Compartment Cover

Backlit LCD
Display

Membrane
Keypad

Probe

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8.3 Measurements On Materials At High Temperatures

When it is necessary to measure wall thickness on surfaces that are in
excess of 200 °F (100 °C), special-purpose high temperature probes should
be used. These probes are built using special materials and techniques that
allow them to withstand high temperatures without damage. Additionally,
care must be taken when performing a “Probe Zero” or “Calibration To
Known Thickness” using a High Temperature probe.

At such elevated temperatures, it is recommended that the user follow these
procedures:

1. Perform a calibration procedure on a sample of known thickness
(refer to section 6.3) with the material temperature at or near the
temperature that will be encountered during measurement.

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.

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3.2 Contents Of Kit

The TI-25M 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-25M uses to calculate the thickness of the material being measured. The
probe must be used correctly in order for the TI-25M 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 surface.
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.

a

d

c

e

g

Probe
Wearface

A

B