Series PC Manual V 1.0 - Rev. 3
– 03/01/01
DS Europe
3
SUMMARY
1.
INTRODUCTION ...................................................................................................................................................5
1.1.
RESPONSABILITY REGARDING USE .......................................................................................................5
1.2.
INSTALLATION IN DANGEROUS ENVIRONMENTS..............................................................................5
1.3.
QUALITY........................................................................................................................................................5
2.
WORKING PRINCIPLE........................................................................................................................................6
2.1.
NOT MEASURING DEAD LENGTH............................................................................................................6
3.
MANUFACTURING MATERIALS......................................................................................................................6
3.1.
TRANSDUCER MANUFACTURING MATERIALS ...................................................................................6
3.2.
MANUFACTURING MATERIALS FOR PARTS NEAR TO THE TRANSDUCER...................................6
3.3.
INSTALLATION IN CYLINDERS ................................................................................................................7
3.4.
EXTERNAL INSTALLATION.......................................................................................................................8
4.
MAGNETIC CURSORS.........................................................................................................................................8
4.1.
DIFFERENT MODELS...................................................................................................................................8
4.2.
POLARITY OF MAGNETIC FIELD..............................................................................................................8
4.3.
HOW TO RECOGNISE POLARITY OF A MAGNET..................................................................................8
5.
MAGNETIC CURSORS SUPPLIED BY DS EUROPE ......................................................................................9
5.1.
WITH RADIAL MAGNETIC FIELD.............................................................................................................9
5.2.
WITH AXIAL MAGNETIC FIELD................................................................................................................9
5.3.
FREE FLOATING CURSOR ..........................................................................................................................9
5.4.
MAGNETS CHOSEN BY THE USER .........................................................................................................10
6.
FLOATS .................................................................................................................................................................11
6.1.
INSTALLATION ADVICES ........................................................................................................................11
6.2.
BALLAST......................................................................................................................................................11
7.
TRANSDUCER INSTALLATION......................................................................................................................11
7.1.
MOD. PCS (S = S
TANDARD
) .........................................................................................................................11
7.2.
MOD. PCP (P =
FLANGED WELL
)..................................................................................................................12
7.3.
MOD. PCR (
WITH SLIDE
) ...............................................................................................................................12
8.
PRESSURE ACTION ON THE MEASURING PROBE...................................................................................12
9.
ELECTRICAL SPECIFICATIONS. ...................................................................................................................12
9.1.
POWER SUPPLY..........................................................................................................................................12
9.2.
ABSORBED CURRENT...............................................................................................................................13
9.3.
SAMPLING FREQUENCY ..........................................................................................................................13
9.4.
RESOLUTION ..............................................................................................................................................14
9.5.
NUMBER OF CURSORS .............................................................................................................................14
9.6.
ANALOG OUTPUTS....................................................................................................................................15
9.7.
RS-485 DIGITAL OUTPUT..........................................................................................................................16
9.8.
CURSOR VELOCITY (
FOR DISPLCEMENT MEASUREMENTS
) .......................................................................16
10.
ELECTRICAL CONNECTIONS ........................................................................................................................17
10.1.
CABLE OUTPUT..........................................................................................................................................18
10.2.
CONNECTOR OUTPUT ..............................................................................................................................18
10.3.
POWER SUPPLY CONNECTION...............................................................................................................18
10.4.
CONNECTION OF 0÷10 V ANALOG VOLTAGE OUTPUT ....................................................................19
10.5.
CONNECTION OF TWO VOLTAGE ANALOG OUTPUTS: 0÷10V ........................................................20
10.6.
CONNECTION OF 4-20
M
A CURRENT OUTPUT .....................................................................................21
10.6.1.
CURRENT CONNECTION: 4÷20 mA WITH VOLTAGE READING: 1÷5 V.......................................21
10.6.2.
CURRENT CONNECTION ..................................................................................................................21
10.7.
SERIAL PORT CONNECTION....................................................................................................................22
10.7.1.
TERMINATION RESISTANCE.............................................................................................................23
10.8.
GROUNDING ...............................................................................................................................................23