Etm 2 Manual

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INSTRUCTION MANUAL FOR ETM-2 VER. 3.0 1

ULTRASONIC THICKNESS GAUGEMODEL ETM-2

OPERATI NG M ANUAL

Manufactured by: ELECTRONIC & ENGINEERING CO. (I) P. LTD.DIV. PARIKH INDUSTRIESDadra 396 230.Marketed by:

ELECTRONIC & ENGINEERING CO. (I) P. LTD.8, Jyoti Wire Industrial Estate, 2 nd Floor, Off Veera Desai Road,Andheri (W), Mumbai-400053. INDIA.Tel.: 91-22-61503800/26735050, Fax: 91-22-6691 9792E-mail: [email protected] Website: www.eecindia.com
mailto:[email protected]:[email protected]:[email protected]://www.eecindia.com/http://www.eecindia.com/http://www.eecindia.com/http://www.eecindia.com/mailto:[email protected]


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INDEX

SR.NO . DESCRIPTION PAGE NO.

1 GENERAL INFORMATION 32 SPECIFICATION 43 BASIC OPERATION 54 CALIBRATION 95 MEASUREMENT IN INCHES 106 DISPLAY 117 BATTERY REPLACEMENT 128 PRECAUTION 129 HINTS ON GOOD MEASUREMENT 12

10 VELOCITY OF COMMON MATERIALS 13


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2. SPECIFICATION

1. Thickness measuring range : 1.0mm to 199.9mm/0.039inch to7.87inch insteel @ 25 Degree

centigrade (Range is dependent onmaterial, transducer type and surfaceCondition).

2. Display resolution : 0.1mm. / 0.0039inch

3. Measurement rate : One reading per Sec.

4. Material velocity range : 1.40M/msec to 7.99M/msec&0.055inches/ sec to 0.314inches/ sec

5. Material velocity calibration : Either directs velocity entry or usingKnown thickness block.

6. Display : 3 and Digit, 0.5 Inch in height.

7. Thickness display units : mm / inch.

8. Velocity display units : meters/msec. &inches/ sec

9. Measurement method : Pulse Echo.

10. Gauge calibration check : Using known velocity or 5mm block.

11. Auto OFF time : 120 sec after last reading.12. Key pad : Sealed tactile.

13. Operating temperature rang e : 0 to 50 Degree centigrade.

14. Power : 2 nos. AA cells.

15. Battery discharge time : 30 hrs for Alkaline battery.

16. Size : 120mm X 60mm X 25mm

17. Weight : 190gms.

18. Accessories : Protecting cover, carrying case,operating manual & probe P.81Calibration certificate, calibration procedure)

19. Optional Accessories : Probes: P.81, P.86, P.61, P.66, P.21, P.45.Calibration blocks & couplants.


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Gauge is calibrated and ready to measure unknown thickness

3.5 DISPLAY INDICATIONS FOR OPERATION

Probe notsensed

Message displays if probe not sensed

Probe not on jobMessage blinks till

probe not put on 5mm block. Gauge will shutoff after 25 blinks.

Probe on 5mmcalibration block

Small triangle blinks inupper left corner of lcd,indicates manualcalibration in process.

Calibration over.

Small triangle in upperleft corner indicates

probe is on the job & job thickness is 5mm.

Ke

CAL

Dis la

DISPLAY STATUS

Software Version Software versionmay be different.

Velocity Metric unitsmode.

Probe on ob Display thickness.

Press key to start MANUAL -operating mode.ONOFF

Probe NoUse key to change probe. Last selected probe

will be displayedfirst.


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4. CALIBRATION

4.1 CALIBRATION WITH KNOWN VELOCITY:

Procedure while operating the gauge for material other than Mild Steel, unknownthickness and known velocity.

Step1. Connect the probe to the gauge.

Step2. Ensure probe tip is clean and press the Key.

Step3. Select probe type using SLEW KEY The probe nos.displayed by gauge must be same as on the probe label.

Step4. Press Key. Follow the procedure as per 3.5

Step5. Press twice.

Step6. Use SLEW Keys and to correspond the displayedreading with that of known value.

Step7. Press Key. After a second the gauge will be readyto measure thickness of material with known velocity.

4.1.1 VELOCITY READ OUT:

Step1. Calibrate the gauge as in 4.1

Step2. Press the key.The display will read velocity in M/msec, for e.g. 5.89 means5.89M/ms or 5890M/sec.

4.1.2 CALIBRATION ERROR:

In case error prompt is displayed when the gauge is turned on,(possibly due to weak battery) the gauge will reload its internal set up. In such acase CAL prompt will be flashed thrice. Normal calibration can follow ifrequired.

ON/OFF

CAL

CAL


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5. MEASUREMENT IN INCHES [ ~ ]

Procedure while operating the gauge for mild steel. Material, similar to the test blockincluded on the guage. Mild steel, Velocity 0.232 inches has been preprogrammed inthe microprocessor.For mm to inches OR from inches to mm press & key

simultaneously. First, release key & then release key.

INITIAL SETUP: Procedure while operating the gauge for mild steelMaterial, similar to the test block included on the gauge.Mild steel, velocity 0.232 inches has been preprogrammedin the microprocessor.

Step1. Connect the probe. Plug the probe into theconnector at the top end of the thickness gauge.Red colour probe connector to Red colour gauge socket

Note: - When unplugging a transducer pull ONLY on Lemo plug, NOT on the cable.

Step2. Wipe all couplant from the tip of the transducer.

Follow the procedure as per 3.5.

Gauge is calibrated and ready to measure unknown thickness.

CALIBRATION WITH KNOWN VELOCITY WILL BE SAME ASMEASUREMENT IN MM.

ON/OFF

ON/OFF


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6. DISPLAY

Various displays are as follows: -

: START.

: Software version.

: Probe connection flashes continuously whenimproper.

: Error in calibration. Old calibration retained.

: Reading exceeding 199.9m.

: Indicates gauge is in calibration mode. Will hold tillsample measurement is made.

: Ready to measure.

: Measured reading in mm (for e. g.)

: Velocity in M/ms (for e. g.)

: Valid measured reading.

: Replace battery.

: Probe number.

~ : Measurement in inch


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7. BATTERY REPLACEMENT

For replacing the batteries, open the gauge back cover by sliding the cover towards yourside & replace the old batteries with the new ones.

8. PRECAUTION

Avoid applying pressure on the display, because of which it can get damaged withinno time. Avoid dropping the gauge and use it carefully.

Do not open the set. It contains electronic components that can be damaged. Referservicing to trained personnel only.

The probe does not need special caution. Clean them after each use.

Ensure probe tip is not pitted or worn out. It should always be flat.

Do not pull on the cables in order to avoid bad electric contacts and damage to theconnectors. Light pull on the connector body is sufficient.

9. HINTS ON GOOD MEASUREMENT

9.1 Select a right type of probe, most suitable for the assignment.

9.2 Calibrate the gauge first on a 5mm test piece.

9.3 Clean the test location and ensure it is free of scales, dirt or loose paint/coatings.The surface should be reasonably smooth. If it is pitted, smoothen with sand

paper.

9.4 Apply small amount of couplant on the test spot.

9.5 With even pressure (not hard) place the probe firmly on the test spot and hold untilthe display reads, allow about 1 sec. to make a good measurement.

9.6 Do not rub the probe on the test surface, as it will increase wear & tear of the probe.

9.7 Use a high temperature probe and couplant for measuring components that are attemperatures above 60 C. Apply small amount of couplant on the probe tip andthen place probe on the test surface. Remove probe immediately when there is avalid reading. Probe should not be heated or else it can be permanently damage.


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10. VELOCITY OF COMMON MATERIAL

MATERIAL VELOCITY (M / SEC)

ALUMINIUM 6320

IRON (STEEL) 5900

S. STEEL (302) 5600

S. STEEL (410) 7390

CAST IRON 3500-5600

COPPER 4700

NICKEL 5630

LEAD (PURE) 2160

TITANIUM 6100

TUNGSTEN 5180

GLASS 5770

LUCITE 2670

TEFLON 1350

NYLON 1800-2200

QUARTZ 5730

PERSPEX 2730

GLYCERIN 1920

WATER 1483

OIL 1410

RUBBER (VULCANIZED) 2300

Above velocities are approximate, for reference only. Due to material composition, theymay be different in the actual test component.

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Etm 2 Manual