Xylem MPP 350 - Manual (Page 4)

Overview MPP 350
4 ba75434e02 07/2005
1 Overview
1.1 Structure and function
The MPP 350 multi parameter probe is a modularly constructed sensor for
pH, dissolved oxygen, conductivity and temperature. Its maximum configura-
tion comprises the following basic components:
! Basic module with permanently built-in conductivity measuring cell ac-
cording to the quadripole measuring principle, with integrated temperature
sensor
! Removable dissolved oxygen module, according to the galvanic measur-
ing principle
! Removable, armored pH electrode with S7 plug-in connector
Detailed structure
(see figure on the
right page)
1 Closing head
2 Protective hood
3 Sinker
Conductivity measuring cell:
4 Temperature sensor in graphite enclosure
5 Voltage electrode (inside, 2x)
6 Current electrode (ring, 2x)
7 Plug connection for D.O. module
D.O. module:
8 Cap nut
9 Screw thread base with ventilation area
10 Lead counter electrode (anode)
11 Insulator
12 Gold working electrode (cathode)
13 Membrane cap (filled with electrolyte solution)
pH electrode:
14 S7 plug-in connector
15 Armoring
16 Sealing ring