User Manual

Overview MPP 350

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