PASI Polares 32 User Manual Download Page 1

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PASI

User manual

Polares 32

P.A.S.I srl – via Galliari 5/E – 10125 TORINO – Italy

Tel. +39 011 650.70.33 – Fax +39 011 658.646 - E-mail [email protected]

www.pasisrl.it

Summary of Contents for Polares 32

Page 1: ...PASI User manual Polares 32 P A S I srl via Galliari 5 E 10125 TORINO Italy Tel 39 011 650 70 33 Fax 39 011 658 646 E mail sales pasisrl it www pasisrl it...

Page 2: ...POLARES 32 3 Errore Per applicare Heading 1 al testo da visualizzare in questo punto utilizzare la scheda Home...

Page 3: ...32 6 POLARES32 main features 8 Automatic adjustment of current and voltage output values 8 3 Mode of use 10 Caution 10 Test plug to check operation of MPX and MPX extension cable 11 Hardware and logic...

Page 4: ...rement input file 33 Measurement sessions 34 Selecting a measurement session 34 Session display 34 Editing the parameters 35 Testing the electrodes 35 Performing and deleting the measurements 36 Pseud...

Page 5: ...6 GPD file format 49 General structure 49 File header 50 Electrodes table 54 Measurements table 55...

Page 6: ......

Page 7: ...s products or to discontinue production of one of its products or to discontinue support for one of its products without prior written notice and urges its customers to ensure that the information ava...

Page 8: ...s manual The warranty will be void if the appliance is tampered with The device must only be used in accordance with the instructions described in this manual Correct and safe operation can only be gu...

Page 9: ...4 Getting started describes how to perform some basic operations using the Polares 32 system and its PC control programme referring to the subsequent chapters of the manual and allowing the operator t...

Page 10: ...f an external Windows PC offers much longer battery life and improved overall system reliability Computer faults can be easily solved by replacing the PC software updates do not require delicate inter...

Page 11: ...delay of one signal on the other allows the simultaneous detection of resistivity and induced polarisation of the ground What are the main strengths of POLARES 32 COMPLEX RESISTIVITY ACQUISITION being...

Page 12: ...25Hz In many common applications ensuring good electrode to ground contact is sufficient to acquire accurate datasets of apparent resistivity values ready for subsequent inversion using special extern...

Page 13: ...ent current voltage chargeability IP spontaneous potential and standard deviation SIGMA Calculation of apparent resistivity for various electrode arrays Schlumberger Wenner Wenner Schlumberger Dipole...

Page 14: ...t overvoltage protection 1000 V Input voltage ranges 300 V and 6 V Automatic power line rejection 50 60Hz Voltage measurement specifications Actual resolution 1 5uV Accuracy standard 0 15 max 1 from 2...

Page 15: ...oceeding with field measurements please do not hesitate to contact PASI technical support to clarify any doubts Always bear in mind that there are physical limits to the application of the method once...

Page 16: ...field especially to avoid arriving on site with a faulty MPX or extension cable FIGURE 1 TEST PLUG The test is described in detail on page XX of this manual Here we would just like to remind you that...

Page 17: ...12 FIGURE 2 INTERNAL MPXS TEST 1 A AND 1 B FIGURE 3 EXTERNAL MPXS TEST 2 3 N...

Page 18: ...ly having said that the electrode with the lowest number is the one closest to the connector on the ground the sequence of hardware electrodes on the left of POLARES 32 would be 16 15 14 13 12 11 10 9...

Page 19: ...trodes stakes and the measuring cable are clearly visible If the planned spacing is the same as the cable spacing you can proceed by directly laying the multi electrode cable along the established pro...

Page 20: ...o the MPXs remember that the first 2 MPXs are internal to the Polares 32 using the cable outputs on each MPX TO ELECTRODES connector FIGURE 6 POLARES32 PANEL The first 16 stakes will be connected to t...

Page 21: ...TEM WITH 32 ELECTRODES If a stringing with more than 32 electrodes is expected one or more yellow MPX extensions should be used Figs 9 and 10 In the case of 5m cable spacing these extensions are 85m e...

Page 22: ...ng 1 al testo da visualizzare in questo punto utilizzare la scheda Home supplied for each multi electrode cable joined together with an adapter included in the supply FIGURE 9 MPX EXTENSION FIGURE 10...

Page 23: ...18 FIGURE 11 SYSTEM COMPLETE WITH 48 ELECTRODES WITH 1 EXTERNAL MPX...

Page 24: ...be viewed In the remainder of this chapter the system is assumed to be correctly set up in terms of hardware and with 32 electrodes connected to the system s internal MPX multiplexers Opening of a mea...

Page 25: ...lectrical parameters some electrical parameters used by the system to perform the session measurements are displayed For a description of the page see section 4 2 6 Moving on to the measurement sessio...

Page 26: ...table below will be selected deselect the check box Step one measurement press Perform measurements The system will proceed with the sequential execution of all the measurements controlling the multi...

Page 27: ...xecution of measurement sessions Main screen The main or homepage screen shows whether the Polares 32 system is connected to the PC and has been correctly recognised by the programme display of an ima...

Page 28: ...ected to the system or if the emergency switch that cuts the power supply to the system is activated these situations will be highlighted by images and messages on the homepage Some system functions s...

Page 29: ...ameters for a measurement session and from which to create the actual measurement sessions to be executed This mechanism for creating a measurement session is described in section 4 2 7 The template f...

Page 30: ...of each individual page and the name of the template displayed The template parameters are distributed over the following four pages in the order in which they are described Session parameters descri...

Page 31: ...n of interest can be easily recalled The parameters on the various display pages of a template are described in detail in the following paragraphs Session parameters The first page of the template dis...

Page 32: ...Measurements The Measurements section allows you to define the sequence of measurements and the electrodes involved for each one The image on the right of the electrode arrangement relates to the sele...

Page 33: ...pping between the logic electrode and MPX physical electrode and the positioning in relative coordinates of the physical electrodes This table is automatically created by the system on the basis of th...

Page 34: ...electrode value to be set a window will appear asking if you want to change all electrode indices belonging to that MPX from the maximum number of electrodes on the MPX to 1 If the OK is not given onl...

Page 35: ...hat will play role M in the measurement cannot be changed by the operator N identification of the logical electrode that will play role N in the measurement cannot be changed by the operator K geometr...

Page 36: ...ted below Max sigma defines the mean square deviation value as a percentage of the measurement value at which point the system will assume that the value obtained is precise enough and will not perfor...

Page 37: ...available directly to the operator but visible and usable only through the Polares 32 programme If a template name already exists the operator will be asked whether he she wants to overwrite the temp...

Page 38: ...for each measurement the identifiers of the electrodes playing the role of the column must be reported separated by commas spaces are allowed For example 1 2 3 4 or 1 3 5 7 A blank line will be consi...

Page 39: ...ction section 4 5 After navigating to the directory of interest click twice on the measurement session file to be opened or select it by clicking once and pressing the Ok button Session display The di...

Page 40: ...e parameters Most of the parameters set in the template are fixed for the measurement session derived from it and are therefore displayed on the session pages in read only mode However some parameters...

Page 41: ...measurements The execution of measurements for a session must be controlled from the Measurements window for the session of interest Compared to the similar Measurements window in a template a number...

Page 42: ...P1 indicates the identifier of the logic electrode associated with role M or P1 for the specific measurement N or P2 identifier of the logic electrode associated with role N or P2 for the specific me...

Page 43: ...en performed to select or deselect only the measurements that have already been performed and whose Sigma value is higher than the threshold configured for the session If the Step single measurement b...

Page 44: ...nd Save session The measurement session file is automatically saved in proprietary GPD format by the Polares 32 programme therefore no explicit saving of data to file by the operator is necessary howe...

Page 45: ...n the event of a malfunction of the Polares 32 system Template management Template management on the PC can be done by pressing the Manage Template button from the homepage as the templates are not di...

Page 46: ...the file on an external storage medium such as a USB stick it must be connected to the PC and recognised before opening the navigation and directory selection window The template is saved as a text fi...

Page 47: ...the test a window will display the result NOTE the electrode connector of the multiplexer to be tested must be closed with the termination plug for the test to be performed correctly System The Syste...

Page 48: ...rences button it is possible to reach the page for the configuration of further parameters related to the GUI of the Polares 32 system listed below Linear measurement unit the operator can choose whet...

Page 49: ...the PC s own functionality simply by launching the self installation file provided by Pasi the new software version will be installed together with all the necessary drivers In the System window acce...

Page 50: ...and the lower the accuracy the lower the accepted Sigma value the slower the measurement with more repetitions and the higher the accuracy Polares 32 automatically manages the correct termination of t...

Page 51: ...rmed A GPD file is a text file in ASCII characters which can therefore be read with a normal editor but it is recommended that no manual changes be made to this type of file as it may be rendered unre...

Page 52: ...S 32 47 Errore Per applicare Heading 1 al testo da visualizzare in questo punto utilizzare la scheda Home abnormal situations occur Under normal system operating conditions this format is not normally...

Page 53: ...x number of stacking Unlimited Max number of scans for each measurement Unlimited limited only based on the storage capacity of the external PC Max number of storable measurements Unlimited limited on...

Page 54: ...xtension for which no documentation is provided To obtain a file in GPD format that can be used for export to third party analysis systems the following procedure must be followed from the main page p...

Page 55: ...ASI_Data_Format_GPD GPD_version followed by a number indicates the version of the GPD format with which the file is written This document describes version 2 of the format Creation_date followed by th...

Page 56: ...ble Measurements_unit followed by the string m Latitude_O followed by the string of decimal degrees of latitude of the point of origin of the session North latitude degrees are given as positive numbe...

Page 57: ...lue standard deviation in percent calculated over the repetitions of the single measurement below which the average of the measurements is considered reliable Frequency frequency in Hertz at which the...

Page 58: ...ification_date 2020 02 15 18 53 Type Automatic Method TOM Wenner Alfa Electrodes_sequence AMNB Standard_electrodes_position Standard Measures_number 55 Measures_done 0 Measurements_unit m Longitude_O...

Page 59: ...r value from 1 Mux_id identifier of the physical MPX with which the logic electrode is associated It is an integer value from 1 Electrodes_id identifier of the physical electrod with which the logic e...

Page 60: ...ng A B M N R dV I Ohm Rho Ohm m Sigma dV V I A SP V IP ms K Time Longitude Latitude Altitude Frequency A sequence of lines equal in number to the value in Measures_list of values written in string for...

Page 61: ...een electrodes A and B It is indicated as a positive or negative decimal number IP ms measured value of the induced polarisation It is indicated as decimal positive number K geometric constant calcula...

Page 62: ...4 2 9 82 06 2 115 733 4 0 141 0 56 28 29 2020 12 22 09 370 0 0 0 0 00 31 20 2 2 3 4 5 2 6 73 25 1 595 620 0 0 057 0 58 28 29 2020 12 22 09 370 0 0 0 0 00 31 20 3 3 4 5 6 1 8 51 44 1 169 647 1 0 019 0...

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