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© 2017 by Proceq SA   

       

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© 2017 by Proceq SA   

       

31

Live mode

The live mode allows the user to test with or without recording the data.

In continuous mode, the Pundit Lab 
begins measuring as soon as “Start” is 
pressed and continues until “Stop” is 
pressed.

If a limited number of readings only  is 
required, this may also be set.

Pressing “Next” logs the data and allows 
a new measurement to begin.

Waveform settings

Clicking "Auto Scale" adjusts the zoom parameters of 
the waveform display to an optimum setting.

9.8. Conversion Curves

Pundit Lab

+

 allows compressive strength estimates to be made using pulse velocity measure-

ments or a combination of pulse velocity and rebound hammer measurements.
To do this it is necessary to create a conversion curve and upload this onto the instrument.

Conversion curves are very much specific to the concrete under test and there are many ex-
amples in the literature.

Pundit Lab

+

 allows either polynomial curves or exponential curves to be programmed and in 

the case of a combined ultrasonic/rebound value measurement a curve based on the SONREB 
(SONic REBound) method may be entered. 

Select the menu item “Conversion Curves”

Here you can view existing curves 
stored on your computer, copy an 
existing curve for modification or:

Create new curve.

Enter the curve parameters and click 
on “Create”.

The new curve will now appear in the 
drop down list and may be loaded 
onto the Pundit Lab

+

.

 
10. Pundit Lab Remote Control Interface

The Pundit Lab interface is completely open for those users who do not wish to use the 
PunditLink software but instead wish to integrate Pundit Lab into the software they use in the 
laboratory such as LabVIEW.

The remote control interface document providing complete instructions is available in the 
downloads section on the Proceq website www.proceq.com.

Содержание Pundit Lab

Страница 1: ...Operating Instructions Pundit Lab Pundit Lab Ultrasonic Instrument Made in Switzerland more than 50 years of know how you can measure Made in Switzerland...

Страница 2: ...owing icons are used in conjunction with all important safety notes used in this man ual i Note This symbol indicates important information 1 5 Correct Usage The instrument is only to be used for its...

Страница 3: ...de after 5 minutes of inactivity After 30 minutes it shuts down completely When powered by the USB connection the display shuts down after 1 hour of inactivity Press the lower right hand key Power ON...

Страница 4: ...typically requires no adjustment For certain applications it may however be adjusted if desired Refer to ASTM D 2845 Standard Test Method for Laboratory Determination of Pulse Velocities and Ultrasoni...

Страница 5: ...rrangement Three transducer arrangements are commonly used Wherever possible use the direct arrangement as this ensures the maximum signal transmis sion between the transducers The semi direct arrange...

Страница 6: ...viewed An asterisk beside the pulse velocity or the distance indicates that this is the parameter that was calculated 1st row Measurement e g 4 of 16 Time stamp 2nd row Measurement ID Temperature 3rd...

Страница 7: ...Start the measurement Note 3 The waveform is not saved only the transmission time 5 5 Basic Measurement Path Length If the pulse velocity of the material under test is known it is possible to measure...

Страница 8: ...s the ultrasonic pulse velocity in m s S is the rebound value Many examples of SONREB curves can be found in the literature In the settings menu Chapter 3 the rebound value should be entered before ca...

Страница 9: ...sions for the test object Tx Frequency kHz Pulse velocity 3500 m s Pulse velocity 4000 m s Pulse velocity 4500 m s Minimum Lateral Dimensions of Test Object 24 146 mm 167 mm 188 mm 54 65 mm 74 mm 83 m...

Страница 10: ...ore details 5 Zero the instrument as described in the Pundit Lab manual chapter 2 1 Performing measurements with the 250 kHz shear wave transducers Typical echo signal obtained with an experimental se...

Страница 11: ...325 40 024 Cable with BNC plug L 30m 100ft 710 10 031 Ultrasonic couplant 250 mL bottle 325 40 048 Shear wave couplant 710 10 028 Calibration rod 25 s for Pundit 710 10 029 Calibration rod 100 s for...

Страница 12: ...it has been found its details will be displayed on screen Click on the Finish button to establish the connection 9 2 Viewing the Data The data stored on your Pundit will be displayed on the screen An...

Страница 13: ...series only Please note the Pundit Lab does not have an internal clock so the date and time displayed for downloaded data is the time at which it was downloaded In Data Logging mode it is the date and...

Страница 14: ...elete individual series 9 6 Further Functions The following menu items are available via the icons at the top of the screen PQUpgrade icon Allows you to upgrade your firmware via the internet or from...

Страница 15: ...cking on the time and amplitude scale zoom buttons for fine adjustment Click and drag the blue line to adjust the trigger point manually i Note In this example the signal amplitude is very low Use hig...

Страница 16: ...y much specific to the concrete under test and there are many ex amples in the literature Pundit Lab allows either polynomial curves or exponential curves to be programmed and in the case of a combine...

Страница 17: ...asia proceq com Proceq Rus LLC Ul Optikov 4 korp 2 lit A Office 410 197374 St Petersburg Russia Phone Fax 7 812 448 35 00 info russia proceq com Proceq Middle East P O Box 8365 SAIF Zone Sharjah Unit...

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