Checkline TI-25DL-MMX User Manual download pdf (Page 6)

– 6 –

UP arrow is used to scroll through the various files, storage loca-

tions, and functions of the data logger. Refer to page 22 for further

information regarding the use of the UP arrow key and the data

logger.

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

MMX is in the CAL mode, this key is used to decrease numeric

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

when the key is held down, numeric values will decrement at an

increasing rate. When MODE is activated, the DOWN arrow

scrolls through the various features and settings of the TI-25DL-

MMX . When the data logging feature has been activated by

pressing the MEM key, the UP arrow is used to scroll through the

various files, storage locations, and functions of the data logger.

Refer to page 20 for further information regarding the use of the

DOWN arrow key and the data logger.

The MEM key enables/disables the data logging feature of the

TI-25DL-MMX. This key is used in conjunction with the

UP/DOWN arrows, SEND, AND CLR keys (hi-lighted in green).

The combination of these keys control the data logging features of

the TI-25DL-MMX. Refer to the section on data logging page 20

The CLR key is specifically used with the data logging feature of

the TI-25DL-MMX. This key clears the contents of an entire file,

or individual storage locations. The CLR key is also used to send

an obstruct (ObSt) to an individual storage location. The ObSt

symbol would indicate that a the user was unable to take a reading

at a particular location. Refer to the section on data logging on

page 20.

The SEND key is used for sending data to internal storage

locations, and external peripheral devices (serial printer/computer).

The SEND key is also used to select data logging functions in the

TI-25DL-MMX. Refer to page 20.

3.5 LCD Display

The numeric portion of the display con-

sists of 4 complete digits preceded by a

leading “1,” and is used to display numeric

values, as well as occasional simple words,

to indicate the status of various settings.

When the TI-25DL-MMX is displaying thickness measurements, the display

will hold the last value measured, until a new measurement is made.

Additionally, when the battery voltage is low, the entire display will flash.

When this occurs, the batteries should be replaced.

▼

MEM

CLR

SEND

1.8.8.8.8

INMM/µs

– 27 –

15.2 Acoustic Velocity Table

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

Material Velocity Velocity

Type Inches/µs Meters/s

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

ness 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.

✔

1 2 3 4 5 6 7 8 9 10 11 ... 16 17

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