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Elcometer 331 B, Руководство по эксплуатации

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7

G

ETTING

 

STARTED

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3.4 Fitting half-cell probes

(This section applies to Elcometer 331 Model BH only)

Connect the probe and cables as shown in Figure 5. The search head can be left connected to the
gauge at the same time as the half-cell probe, however for ease of use it is recommended that the
search head is removed and stored in the carry case.

Figure 5. Fitting half-cell probe and cables

Black 
cable

Red 
cable

331.book  Page 7  Thursday, March 12, 2009  9:51 PM

Содержание 331 B

Страница 1: ...English Elcometer 331 Concrete Covermeter Model B Model BH Operating Instructions 331 book Page 1 Thursday March 12 2009 9 51 PM...

Страница 2: ...rademarks acknowledged Copyright Elcometer Limited 2006 2009 All rights reserved No part of this Document may be reproduced transmitted transcribed stored in a retrieval system or otherwise or transla...

Страница 3: ...Covermeter 12 4 The menus 12 5 Locating reinforcement bars 14 5 1 Before you start 14 5 2 To locate a single layer of reinforcement bars 14 5 3 To locate two layers of reinforcement bars 15 5 4 To det...

Страница 4: ...ned bars 24 11 Search heads 25 12 Half cell probes 28 13 Error messages 29 14 Personalised welcome screen 30 15 Storage 30 16 Maintenance 30 17 Technical data 31 18 Related equipment 32 19 Accessories...

Страница 5: ...is available in five versions Model B entry level Model BH entry level with half cell potential measurement Model SH intermediate level with half cell potential measurement Model TH data logging with...

Страница 6: ...11 Automatic bar size estimate Additional orthogonal bar size calculation Locate mode Under Cover mode alerts user when cover is below minimum Maxpip mode for fast identification of reinforcement bar...

Страница 7: ...millimetres mm Similar screens will be seen when the Covermeter is set to inches 2 QUICK START To configure the Covermeter quickly and start taking readings 1 Charge the batteries see page 4 2 Fit sea...

Страница 8: ...rge the battery Use of any other type of charger is a potential hazard may damage your Covermeter and will invalidate the warranty Do not attempt to charge any other batteries with the supplied charge...

Страница 9: ...C mains outlet supplied from an approved and safe mains switchboard Connection to other supply sources such as generators or inverters may have the potential to damage the charger the battery and or t...

Страница 10: ...rch heads The bracket provides a convenient place to store the search head while the Covermeter is not in use Figure 4 Search head storage clip 3 3 Identifying search heads The four search head types...

Страница 11: ...as shown in Figure 5 The search head can be left connected to the gauge at the same time as the half cell probe however for ease of use it is recommended that the search head is removed and stored in...

Страница 12: ...ls up down through menus and lists of values Increases decreases sensitivity Accesses menus Escapes from menus Discards values entered on display Switches the Covermeter on or off Selects menu items T...

Страница 13: ...switch off Press any key while the countdown timer is displayed to cancel automatic switch off 3 7 The display Take some time to familiarise yourself with the information shown on the display of your...

Страница 14: ...Half cell potential numerical 2 Half cell reading indicator Symbols A wide range of symbols is used on the display The meaning of all these symbols is stored in the Covermeter MENU ABOUT HELP LCD con...

Страница 15: ...puter interface Your Covermeter is fitted with an RS232 interface The interface is located under the interface access cover at the rear of the Covermeter see Figure 2 and Figure 3 on page 4 This 5 pin...

Страница 16: ...f the ZERO softkey will be required this is quite normal When a half cell probeh is attached to the instrument zeroing is not required 4 THE MENUS To access the menus press the MENU softkey To return...

Страница 17: ...n about the search head CONTACT Press Enter to display Elcometer offices worldwide and if programmed Supplier contact details HELP Press Enter to display an explanation of all the symbols used on the...

Страница 18: ...he Covermeter 5 Adjust sensitivity see Adjusting sensitivity on page 22 6 Align the search head parallel to the reinforcement bars being sought 7 Maintain the alignment of the search head and move the...

Страница 19: ...e bars in the two layers are of similar size Figure 10 Search for the nearer layer first it gives a stronger signal and is least influenced by the other bars Then search for the second layer this time...

Страница 20: ...of reinforcement bars on page 14 2 Hold the search head over the bar Move the search head side to side and rotate the head clockwise anti clockwise until the signal is at a maximum Figure 12 When the...

Страница 21: ...pping When you are locating layers of reinforcement bars it is good practice to map the concrete surface in a systematic manner The following steps describe a mapping technique which can be used to lo...

Страница 22: ...re the instrument is set to Cover moden MENU INSTRUMENT MODE COVER 4 Select bar diameter see Selecting bar size on page 20 5 Zero the Covermeter 6 Adjust sensitivity see Adjusting sensitivity on page...

Страница 23: ...d is not over or near any other bars which might affect the readingo If the reinforcement bar is too deep to measure successfully over range the depth of cover will be displayed as infinite Figure 13...

Страница 24: ...size and return to the Reading Screen The bar sizing functions of the Covermeter will display any measured bar size to the nearest size in the selected series Metric Imperial ASTM Canadian Japanese Ba...

Страница 25: ...the concrete Measurements will be taken at the intersection points of the grid Typical grid spacing is 1 m x 1 m however this may be reduced if localised corrosion is suspected If the measured half c...

Страница 26: ...t can be measured and interpreted 9 ADJUSTING SENSITIVITY The sensitivity setting is indicated by the variable wedge shaped symbol on the display To increase the sensitivity press To decrease the sens...

Страница 27: ...level before the signal has reached its maximum If this occurs reduce the sensitivity until the sound and LED are again responding readily to changes Note Reducing the sensitivity does not reduce the...

Страница 28: ...individual bars Welded mesh reinforcements however create current loops which produce additional strong signals When searching for welded mesh reinforcements it is common to encounter three levels of...

Страница 29: ...pe of search head to another is quick and easy simply switch off the Covermeter swap search heads switch on again and zero the Covermeter Figure 18 Search head search fields Use the Narrow Pitch searc...

Страница 30: ...handle controls which search field is active Figure 19 Borehole probe search fields The body of the probe has a scale marked every 10 mm 0 5 along its length Use this scale to measure the depth of re...

Страница 31: ...extension arm This optional accessory allows the operator simple access to areas normally requiring ladders or scaffolding The search head extension arm reduces the need to kneel down and allows the...

Страница 32: ...damage such as cuts and tears in the sheathing before use The Copper Copper Sulphate half cell probe is intentionally filled with a reserve of saturated Cupric Sulfate solution combined with solid Cup...

Страница 33: ...w search head If error persists return to Elcometer 3 PROBE Internal error Return to Elcometer 4 PROBE Search head power supply fault Remove probe If error persists the Covermeter is faulty If error c...

Страница 34: ...k Next 5 Select Disabled 6 Click Next Follow the remaining on screen instructions to delete the welcome screen 15 STORAGE This Covermeter incorporates a Liquid Crystal Display LCD If the display is he...

Страница 35: ...earch head Range 40 mm 1 6 bar 50 mm to 200 mm 2 to 8 8 mm 0 3 bar 25 mm to 150 mm 1 to 6 Accuracys up to 65 mm 2 6 depth 2 mm 0 1 over 70 mm 2 8 depth 3 Pitch resolution 16 mm 5 diameter bar at 100 m...

Страница 36: ...Elcometer 331 Concrete Covermeter may also benefit from the following Elcometer products Elcometer Adhesion and Bond Strength Testers Elcometer Concrete Crack Microscopes Elcometer Concrete Moisture M...

Страница 37: ...TW33119199 Earphone TW99912220 Calibration check block TW33119218 Data transfer cablew Covermeter to PC T99916217 RS232 to USB transfer cable T99916716 Half cell probe kit Copper Copper Sulphate Cu C...

Страница 38: ...1 Error messages 29 F Features 2 Fitting a search head 5 H Half cell Reading screen 10 Taking a measurement 21 Half cell probes 28 Care of 28 Fitting to gauge 7 Spares 33 Specifications 31 Storage and...

Страница 39: ...2 Q Quick start 3 S Screen Welcome information 9 Screen symbols 10 Battery condition 5 Search head Borehole Probe 26 Deep Cover 25 Specifications 31 Extension arm 27 Fitting 5 Narrow Pitch 25 Specific...

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