Check-line TI-007DLX Manual de usuario

MODEL TI-007DLX

ULTRASONIC THICKNESS GAUGE

Operating Manual

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TABLE OF CONTENTS

1.0 Introduction .......................................................................................................................... 03

1.1 Disclaimer......................................................................................................................

2.0 Keypad, Menu, Display & Connectors............................................................................... 04

2.1 ON/OFF/ENTER Key

2.2 PRB 0 Key

2.3 CAL Key

2.4 GAIN Key

2.5 SCAN Key

2.6 +/- INCREMENT/DECREMENT Keys

2.7 MODE Key

2.8 MENU Key

2.9 The Display

2.10 The Transducer

2.11 Top & Bottom End Caps

3.0 Principals of Ultrasonic Measurement ............................................................................... 11

3.1 Time versus thickness relationship

3.2 Suitability of materials

3.3 Range of measurement and accuracy

3.4 Couplant

3.5 Temperature

3.6 Measurement modes

4.0 Selecting the measurement mode........................................................................................ 14

4.1 Which Mode and Transducer do I use for my applications?

5.0 Making measurements ......................................................................................................... 16

5.1 Probe Zero

5.2 Material Calibration

6.0 Through Pain Measurement................................................................................................ 22

6.1 Introduction

6.2 Multimode Transducers

7.0 Velocity Gauge ...................................................................................................................... 23

6.1 Velocity Gauge (VX)

6.2 Calibration to a known thickness

6.3 Calibration to a known velocity

8.0 Additional features ............................................................................................................... 26

8.1 GAIN

8.2 Hight-speed Scan

8.3 Alarm

8.4 Differential

8.5 Units

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8.6 Lite

8.7 Beep

8.8 Probe Type

8.9 Velocity (VX)

8.10 Lock

8.11 Factory Defaults

9.0 Data Storage.......................................................................................................................... 34

9.1 Introduction

9.2 Opening a Data File

9.3 Storing a Measurement

9.4 Clearing a File

9.5 Clear All Files

10.0 Dsta Transfer & Power Options.......................................................................................... 37

10.1 Connectivity

10.2 Opening a File

10.3 Copying Opening Files

10.4 Line Power

11.0 Appendix A - Velocity Table................................................................................................. 39

12.0 Appendix B - Application Notes .......................................................................................... 40

13.0 Warranty ............................................................................................................................... 42

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1.0 INTRODUCTION

The Checkline model TI-007DLX is a precision ultrasonic micrometer. Based on the

same operating principles as SONAR, the TI-007DLX is capable of measuring the

thickness of various materials with accuracy as high as ±0.0001 inches, or ±0.001

millimeters. The principle advantage of ultrasonic measurement over traditional

methods is that ultrasonic measurements can be performed with access to only one side

of the material being measured.

1.1 Disclaimer

While the TI-007DLX is a basic digital instrument, it is equipped with a number of

measurement modes and transducer options for additional versatility. It is strongly

recommended that the contents of this manual be read in its entirety to avoid erroneous

measurements based on operator error. The user is solely responsible for proper use,

setup and interpretation of the measurements acquired.

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2.0 KEYPAD, MENU, DISPLAY & CONNECTORS

The Keypad

2.1 ON/OFF/ENTER Key

The ON/OFF/ENTER key powers the unit ON or OFF. Since the same key is

also used as an ENTER key, the gauge is powered off by pressing and holding

down the key until the unit powers off.

Once the gauge is initially powered on, this key will function as the ENTER key, similar

to a computer keyboard. This key will be used to select or set a menu option.

NOTE: Unit will automatically power off when idle for 5 minutes. All current settings

are automatically saved prior to powering off.

2.2 PRB 0 Key

The PRB 0 key is used to “zero” the TI-007DLX 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 xed value. Refer

to section 5.1 for a further explanation of this important feature.

2.3 CAL Key

The CAL key is used to enter and exit the TI-007DLX ’s calibration mode. This

mode is used to adjust the sound velocity value that the TI-007DLX will use

when calculating thickness. The tool will either calculate the sound-velocity

from a sample of the material being measured, or allow a known velocity value to be

entered directly. This provides increased linearity between transducers. Refer to section

5.2 for an explanation on the various calibration options.

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2.4 DATA Key

The DATA key accesses the data logging section of the TI-007DLX, which

consists of 50 sequential (single column) les with 250 storage locations per

le. Refer to section 8.8 for an explanation on the various calibration options.

2.5 CLR Key

The CLR key is used in conjunction with the data logging section to clear a

single stored memory location. Refer to section 8.8 for an explanation on the

various calibration options.

2.6 +/- Increment/Decrement Key’s

The +/- Keys are used to increment/decrement values,

navigate menus, and select menu options.

2.7 MODE Key

The MODE key toggles the measurement modes. If a delay line transducer (dLY)

is selected from the PROB menu option, echo-echo (E-E) and interface-echo (I-E)

modes will be toggled. If a contact transducer (Con) is selected, pulse-echo (P-E) and

echo-echo (E-E) modes will be toggled. Finally, if the plastic transducer (PLAS) option

is selected, the thickness options thin (thin) and thick (thK) will be toggled. The

measurement modes and transducer styles offer the exibility to address specic

application scenarios. Refer to section 7.0 for an explanation on the various calibration

options.

2.8 MENU Key

The MENU key is used to access and set all of the additional features of the

TI-007DLX that are not at the top level of the keypad with a dedicated key. The

features and setting are outlined in the table below:

Here’s a quick overview of navigating through the features in MENU:

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1. Press the MENU key once to enter the sub menu items

2. Press the +and –keys to toggle through the features.

3. To enable or edit the status of any feature, press the ENTER key.

4. The edit icon will start blinking to indicate that the TI-007DLX is currently

in EDIT mode.

5. Press the +and –keys to toggle through the setting options.

6. Press the ENTER key to accept changes and return to the top level of features, or

the MENU key at any time to abort changes and return the measurement screen.

2.9 The Display

The TI-007DLX uses a custom glass

LCD backlit low temperature display for

use in a variety of climate conditions. It

contains graphic icons, as well as both 7

and 14 segment display areas. Let’s take

a closer look and what all these things are

telling us:

A. Edit: This icon will be displayed, and

blinking, to let a user know when they

are in an edit mode to change a value

or setting.

B. Large 7 segment: The thickness measurement, velocity or alpha message will be

displayed in this area.

Menu Feature Items

Gain Multi Scan Alarm Diff Unit Lite Beep Probe VX

VLOW Aluminum On On On English On On Delay On

LOW Steel Off Off Off Metric Off Off Plaastic Off

MED Stainless Options Options Options Options Contact

HIGH Iron Set Lo Set

Nominal

LOW Lo Options

VHI* Plexiglass Set Hi HIGH Med .125

PVC High .250

Plastic .375

Poly Urea .500

User 1

User 2

* Displayed only when the contact transducer option has been selected.

** Diameter options are only available for contact transducers.

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C. Measurement Modes: This group of icons indicates which measurement mode the

TI-007DLX is currently using. The modes are pulse-echo, echo-echo,

interface-echo, and plastics (PLAS).

D. Stability/Repeatability Indicator: This is used in conjunction with the thickness

measurement as a reference for the validity of the measurement. The TI-007DLX

takes multiple measurements per second, and when all the vertical bars are

illuminated, it’s a reference that the same thickness value is reliably being measured

multiple times per second.

E. Battery: Indicates the amount of battery life the TI-007DLX has remaining.

F. Backlight: When this icon is illuminated, it indicates the backlight is on.

G. Small 7 Segment: The material velocity, speed the sound wave travels through a

given medium/material, is displayed in this area, informing the user what material

the TI-007DLX is currently calibrated too. This area is also used for alpha messages

in the menu and edit modes.

H. Units: This combination of icons are illuminated in different sequences to inform

the user what measurement units are currently being displayed in the small 7

segment area.

I. Small 14 Segment: Displays the current gain setting of the TI-007DLX DL. In P-E

mode the options are VLOW, LOW, MED, HIGH, VHI, and LOW, MED, HIGH

with modes E-E, I-E, and PLAS. MED is the default setting

J. Units: This combination of icons are illuminated in different sequences to inform

the user what measurement units are currently being displayed in the large 7

segment area. The plus/minus icon is illuminated when the DIFF (differential)

feature is activated.

K. Small 14 Segment: The material type is displayed in this area. If it is set to a

value of one of the materials in our material list, it will be displayed in alpha

characters indicating the material type. Otherwise it will be set to CUST, indicating

custom material type.

L. Features: The icons illuminated in this row across the bottom of the LCD display

which features are currently enabled. For a complete list of the menu features

in the TI-007DLX , Refer to section 2.0 for a list. The TI-007DLX can be

locked once calibrated, to avoid accidently changing the calibration. When this icon

is illuminated, the TI-007DLX is in lock mode. Refer section 8.10 for an explanation

on locking the TI-007DLX.

M. File/Loc: This area is exclusively for the data storage section of the TI-007DLX.

The icons and segment elds represent the current le open, and the current storage

location in the le. Refer to section 9.0 for an explanation of the data storage feature

in the TI-007DLX.

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2.10 The Transducer

The transducer is the “business end” of the TI-007DLX. It transmits and receives

ultrasonic sound waves that the TI-007DLX uses to calculate the thickness of the

material being measured. The transducer connects to the TI-007DLX via a single

shielded coaxial cabale with microdot connectors.

Delay Line Transducer

The single element delay line transducer is commonly used with the TI-007DLX for

materials with an approximate range of 0.006” to 1.00” in steel. The measurement

modes used with this style of transducer are echo-echo (E-E) and interface-echo (I-E).

Echo-echo mode will be used for the lower end of the measurement range, while

interface-echo for the upper end of the measurement range. Interface-echo mode

measures from the end of the delay line to the rst return echo from the back wall of

the material, while echo-echo measurements are made between the rst and second

return echoes from the back wall of the material. The frequency range for the versions

Electromatic commonly supply are from 10MHz to 20MHz.

The Delay line is fastened to the transducer with a retaining ring. A drop of couplant is

applied between the delay line and transducer body. Refer to the diagram above. The

couplant should be checked on a regular basis to keep it from drying out. To replenish,

unscrew the retaining ring counterclockwise, separate the delay line from the body,

‘clean both surfaces’, apply a drop of couplant, and reassemble.

Delay Line Graphite Tip (for use with Plastics Mode)

The TI-007DLX has a special “PLAS” mode that uses the standard delay line

transducer, as described above, but with a replaceable graphite delay tip. This mode and

tip should be used when the velocity of the plastic material measured is similar to the

velocity of the standard acrylic delay tip, and not achieving any signal/measurement.

The graphite tip creates a ‘mismatch’ between the tip material and the plastic material

measured.

The Delay line is fastened to the transducer with a retaining ring. A drop of couplant is

applied between the delay line and transducer body. Refer to the diagram above. The

couplant should be checked on a regular basis to keep it from drying out. To replenish,

unscrew the retaining ring counterclockwise, separate the delay line from the body,

‘clean both surfaces’, apply a drop of couplant, and reassemble.

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Contact Transducer

The single element contact style transducers are commonly used for materials with an

approximate range of 0.040” to the maximum range of the TI-007DLX rated in steel

and depending on the transducers diameter and frequency. The frequency range is

5.0 to 10 MHz, with diameters available at 0.125, 0.250, 0.375 and 0.500 inches. The

measurement modes used with this style of transducer are pulse-echo (P-E) and echo-

echo (E-E).

Measuring

In order for the transducer to do its job, there must be no air gaps between the wear-

face and the surface of the material being measured. This is accomplished with the use

of a “coupling” uid, commonly called “couplant”. This uid serves to “couple”, or

transfer, the ultrasonic sound waves from the transducer, into the material, and back

again. Before attempting to make a measurement, a small amount of couplant should

be applied to the surface of the material being measured. Typically, a single droplet of

couplant is sufcient.

After applying couplant, press the transducer (wear face down) rmly against the area

to be measured. The Stability Indicator should have six or seven bars darkened, and a

number should appear in the display. If the TI-007DLX has been properly “zeroed”

(see page 16) and set to the correct sound velocity (see page 17), the number in the

display will indicate the actual thickness of the material directly beneath the transducer.

If the Stability Indicator has fewer than ve bars darkened, or the numbers on the

display seem erratic, rst check to make sure that there is an adequate lm of couplant

beneath the transducer, and that the transducer is seated at against the material. If the

condition persists, it may be necessary to select a different transducer (size or frequency)

for the material being measured. See page 8 for information on transducer selection.

While the transducer is in contact with the material that is being measured, the

TI-007DLX will perform four measurements every second, updating its display as it

does so. When the transducer is removed from the surface, the display will hold the last

measurement made.

2.11 Top and Bottom End Caps

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