Checkline TI-25DL-MMX User Manual download pdf (Page 5)

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3.4 The Keypad

The TI-25DL-MMX 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.

This key is used to turn the TI-25DL-MMX on and off. When the

tool is turned ON, it will first perform a brief display test by

illuminating all of the segments in the display. After one second,

the tool will display the internal software version number and the

current file location and status. After displaying the version num-

ber, the display will show “0.000” (or “0.00” if using metric units),

indicating the tool is ready for use.

The TI-25DL-MMX is turned OFF by pressing the ON/OFF key.

The tool has a special memory that retains all of its settings even

when the power is off. The tool also features an auto-powerdown

mode designed to conserve battery life. If the tool is idle for 5

minutes, it will turn itself off.

The PRB-0 key is used to “zero” the TI-25DL-MMX in much

the same way that a mechanical micrometer is zeroed. If the tool

is not zeroed correctly, all of the measurements that the tool makes

may be in error by some fixed value. Refer to page 10 for an

explanation of this important procedure.

The CAL key is used to enter and exit the TI-25DL-MMX‘s

calibration mode. This mode is used to adjust the sound-velocity

value that the TI-25DL-MMX 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. Refer to page 12 for an explanation of the two

CAL functions available.

The MODE key is used to toggle through the various features and

settings of the TI-25DL-MMX (gate, alarm mode, beeper, back

light, units, scan mode, and differential mode ). The MODE key is

used in conjunction with the arrow and send keys to enable/disable

the features and settings.

The UP arrow key has three functions. When the TI-25DL-MMX

is in calibration mode, this key is used to increase numeric values

on the display. An auto-repeat function is built in, so that when the

key is held down, numeric values will increment at an increasing

rate. When MODE is activated, the UP arrow key scrolls through

the various features and settings of the instrument. When the data

logging feature has been activated by pressing the MEM key, the

OFF

PROBE

ZERO

CAL

MODE

▼

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16.0 SPECIFICATIONS

Range

TI-25DL-MMX* Pulse-Echo Mode (Pit & Flaw Detection):

0.040–6.000" (1.01–152 mm)

Echo-Echo Mode (Through Paint & Coatings):

0.100–1.0" (2.54–25.4 mm). With up to 0.040" of coating.

TI-25DL-MMX-EXT* Pulse-Echo Mode (Pit & Flaw Detection):

0.100–10.000" (2.54–254 mm)

Echo-Echo Mode (Through Paint & Coatings):

0.200–5.0" (5–127 mm). With up to 0.080" of coating.

Resolution .001" (0.01 mm)

Display 4

⁄

-Digit, 0.5" Backlit LCD

Velocity Range 0.0492 to .3937 in./µs. (1250 to 10,000 meters/second)

Probe

TI-25DL-MMX 5 MHz, 0.25" Dia. (6.35 mm), High Damp

TI-25DL-MMX-EXT 3.5 MHz, 0.5" Dia. (12.70 mm), High Damp

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 2.4 x 4.5 x 1.25" (65 x 114 x 35 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.

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