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CGEO-PR-VW Vibrating Wire Portable Readout                                                                                                                                 

CGEO INTERNATIONAL LIMITED 

                                                                              Installation Manual           

Section 5 : Maintenance 

The CGEO Readout Box is designed for all weather fieldwork, but daily maintenance 
is still needed to maintain the best condition and reliability. 

5.01 Cleaning 

Clean the reader periodically with a soft cloth dampened with soap and water. 

Note: 

a) DO NOT USE ANY TYPES OF SOLVENTS OR CLEANING AGENTS on the 
faceplate of the readout; 
b) Prevent any liquid entering into the connection ports on the panel. 

5.02 Charging 

CGEO Readout Box is equipped with a high volume Lithium cell, if it is not operated 
correctly, the life of the battery will be shortened unless the following steps are taken: 

a) 

The new battery is undercharged, and only about 20% of the rated volume. The 

new readout box can be used at once without charging but must be charged 
immediately when the following display appears “

The 

Voltage is not enough; Please 

Charge

b) The first-time charge should be longer than 48 hours. Then at least 
24hours. when charged for 24 hours, the battery will be charged to 80%, and be full 
for 48hours operation. 
c) You can charge the readout box when it is in use. Of course it will take longer to 
reach a full charge. 
d) If the readout box is not in use for a long time, it should be discharged fully before 
storing. It is still suggested to charge and discharge completely every other half year. 

5.03 Calibration 

The readout should be returned to the factory for servicing and calibration periodically (approximately 

every 24 months depending on usage).

 

5.04 Trouble Shooting 

Listed below are a few commonly experienced problems and remedial action. Contact 
the factory should a problem arise not explained herein. 

5.04.1 Unit will not come on 

Internal battery is probably dead, please use mains power. 

5.04.2 After charging, battery stays powered for very short time 

Internal Lead-acid battery is dead. Consult the factory to schedule battery 
replacement. 
4.04.3 Stored readings are not retained at power-off 
Check Alligator Clip connections to vibrating wire gage leads. If ok, check gauge 
resistance with Ohmmeter. It should read between 90 and 
180 ohms. If gauge resistance is ok, check the DISPLAY MODE in the 
order of D

E

F

A

B

C, This should then be ok. If the problem persists try 

Summary of Contents for CGEO-PR-VW

Page 1: ...CGEO INTERNATIONAL LIMITED Model CGEO PR VW Vibrating Wire Portable Readout Operation Manual REV B...

Page 2: ...and may vary to suit particular site conditions Section 1 Introduction The CGEO Vibrating Wire Readout has been designed for the measurement of vibrating wire sensors as manufactured by CGEO INTERNATI...

Page 3: ...connection to laptop or PC 6 ON OFF to turn power on and off 7 SET for setting parameters 8 AUTO is for automatic measuring and storing data 9 MODE to set the frequency sweep range of different senso...

Page 4: ...colour 2 02 Communication Port The CGEO Readout Box has RS 232C and RS485 port and there is an obvious sign RS 232 485 in the corresponding position on the panel The cable allows a RS 232C connected t...

Page 5: ...cally within 15 minutes It should then be recharged The readout box will turn off automatically given one of the following conditions a If there is no key operation after 15 minutes b If the battery v...

Page 6: ...NTERNATIONAL LIMITED Installation Manual If the transducer has been connected after the self checking mode then the screen will be as above for CGEO transducers If another manufacturer s transducer is...

Page 7: ...nt types of transducers there are six DISPLAY MODES in the CGEO RO VW which can be set at any time After getting started choose DISPLAY MODE to select the correct frequency range Table 1 DISPLAY MODE...

Page 8: ...till measure in this mode when turned on again 3 01 Shortcut Measuring Standard Manual Measuring MEAS Mode Press MEAS To operate manually and store data follow the following steps 1 Press MEAS the fol...

Page 9: ...rating Wire Portable Readout CGEO INTERNATIONAL LIMITED Installation Manual 5 Press scroll the stored readings simply press once If you need to scroll rapidly hold down 6 Connect other transducers and...

Page 10: ...the cursor the black rectangle will move accordingly Then press to make your selection 4 02 Menu Selection There are the following sections Storage Address Storage Page Data Clean up Data Renewing Tim...

Page 11: ...his screen if you press SET the data will not be stored and the system exits to the main menu Note After setting the box number and the channel number only by pressing can you store these settings 4 0...

Page 12: ...ystem will exit to main menu automatically 4 02 4 Data Renewing When you select the Data Renewing Page the following screen will show In this screen all stored data in SRAM that is marked with delete...

Page 13: ...wed When you select the Data View Page the following screen will be displayed The information shown includes the current Page Box No Channel No Model A F Modulus F or frequency Unit Hz and Temperature...

Page 14: ...the data was stored YY MM DD H M If the selected note is empty or has been deleted No Data will be displayed Display for No data If the Box No needs to be changed it should be changed before increasin...

Page 15: ...tury Code YY MM DD Week and Hour Minute Firstly the cursor is under Century Code and then press to move the cursor to YY press once the cursor will move to the next and when the cursor move to Minute...

Page 16: ...exits to main menu 4 02 8 Display Model When you select the Display Model page the following screen will be displayed Screen for Display Model Press or to select required field Then press to enter tha...

Page 17: ...C B 2 369 10 4 C 1 019 10 7 Note Please refer to the instruction manual of the other manufacturers for their calculations 4 02 9 Instruments Type When you enter Instruments Type field the following b...

Page 18: ...CGEO PR VW Vibrating Wire Portable Readout CGEO INTERNATIONAL LIMITED Installation Manual 4 02 10 Exit When selected the Readout will return to the main menu...

Page 19: ...ours the battery will be charged to 80 and be full for 48hours operation c You can charge the readout box when it is in use Of course it will take longer to reach a full charge d If the readout box is...

Page 20: ...per DISPLAY MODE switch may be selected Please change and check in the order of D E F A B C and if there is stable reading in some MODE just stop changing 4 04 5 RS232 is not operational Please check...

Page 21: ...sensors We reserve the right to amend Instruction Manual and design of the Readout Box without notification CGEO INTERNATIONAL LIMITED warrants that they will be responsible for any manufacturing defe...

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