Wiring
28
ISFET sensors
Connect the cable cores in the device as follows:
!
Note!
• The outer shield is grounded by means of the metal gland.
• More information on pH measurement with PML or without PML is provided on the "Additional
information" CD-ROM supplied.
Changing the pH input from glass electrode to ISFET sensor
In the glass/ISFET version (CPC310-xx2xxxxxxx), Topcal S is supplied for measuring with glass
electrodes as standard.
Proceed as follows to switch the connection:
1.
Open the bottom housing section of the device.
2.
If a glass electrode is connected, disconnect the cores of the sensor cable.
3.
Remove the "pH" terminal on the housing cover (see Fig. 28) from the device and replace it
with the "DRN/SRC" terminal supplied.
Connection with PML (symmetrical)
Connection without PML (unsymmetrical)
a0003963
Fig. 26:
Connecting ISFET sensors with PML
a0003964
Fig. 27:
Connecting ISFET sensors without PML
d.n.c (do not connect)
BN
PA/PM
WH
BK
BN
YE
WH
GN
Coax
DRN
Ref PA12 13 11 S
SRC
BN
WH
BK
BN
YE
WH
GN
Coax
d.n.c
DRN
Ref PA12 13 11 S
SRC
RD
Summary of Contents for Topcal S CPC310
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