Inserting the Batteries ...................................................................................................................................6

Connecting a Sensor ......................................................................................................................................7

Switching On the Meter ................................................................................................................................8

Icons .....................................................................................................................................................................8

Display and Keypad ........................................................................................................................................9

Overview of the Portavo 908 ....................................................................................9

Information ............................................................................................................. 10

Calibration Record ....................................................................................................................................... 10

Sensor Information ...................................................................................................................................... 10

Sensor Network Diagram (pH and Oxy only) ..................................................................................... 11

Sensor Monitor .............................................................................................................................................. 12

Messages ......................................................................................................................................................... 12

MemoLog (Memosens only) .................................................................................................................... 12

Device Info ...................................................................................................................................................... 13

Device Test ...................................................................................................................................................... 13

pH Configuration .................................................................................................... 14

ORP Configuration .................................................................................................. 16

Conductivity Configuration ................................................................................... 18

Oxygen Configuration ............................................................................................ 21

pH Calibration ......................................................................................................... 23

Calimatic Calibration ................................................................................................................................... 23

Manual Calibration ...................................................................................................................................... 24

Data Entry Calibration ................................................................................................................................ 24

Calibrating a pH/ORP Combo Sensor ................................................................................................... 24

ORP Calibration ...................................................................................................... 25

ISFET Calibration .................................................................................................... 26

Conductivity Calibration ........................................................................................ 27

Auto Calibration ............................................................................................................................................ 27

"Entry of Solution" Calibration ................................................................................................................. 28

Cell Constant / Cell Factor Calibration .................................................................................................. 28

Installation Factor Calibration .................................................................................................................. 28

Zero Calibration ............................................................................................................................................ 28

Oxygen Calibration ................................................................................................ 29

Calibration in Air ........................................................................................................................................... 29

Zero Calibration ............................................................................................................................................ 30

Data Entry Calibration ................................................................................................................................ 30