Electro-Chemical Devices (ECD) HYDRA Ammonium - Manual (Page 5)

HYDRA NH
4
+ -N Page v
3.0 OPERATION ............................................................................................................................................. 9
3.1 KEYS ..................................................................................................................................................... 9
3.2 MENUS .............................................................................................................................................. 10
3.2.1 Ammonium Ion Channel 1 Menu Structure ............................................................................... 10
3.2.2 Potassium Ion Channel 2 Menu Structure ................................................................................. 10
3.2.3 pH Channel 3 Menu Structure ................................................................................................... 10
3.2.4 Graphical Display Screen ............................................................................................................ 10
3.2.5 Buffer Menu ............................................................................................................................... 11
3.2.6 Set-Up Menu .............................................................................................................................. 11
3.2.7 Status Menu ............................................................................................................................... 14
3.2.8 Configuration and Trim Menu.................................................................................................... 14
3.3 OUTPUTS ........................................................................................................................................... 14
3.3.1 Manual Mode (4-20 mA Hold Function) .................................................................................... 15
3.4 CONTACTS-ALARM RELAYS ............................................................................................................... 15
3.4.1 Standard Configuration .............................................................................................................. 15
3.4.2 One AC10 with Two HYDRAs ...................................................................................................... 16
3.5 ION SELECTIVE FEATURES ................................................................................................................. 17
3.5.1 The Isopotential point ................................................................................................................ 17
3.5.2 Potassium Ion Interference Correction ...................................................................................... 17
3.5.3 pH Correction ............................................................................................................................. 17
4.0 START UP ............................................................................................................................................... 18
4.1 SET-UP AND CONFIGURATION .......................................................................................................... 18
4.1.1 Set Up Menus, Standard ............................................................................................................ 18
4.1.2 Set Up Menu, MASTER/SLAVE ................................................................................................... 19
4.1.3 Configure and Trim Menu, Standard ......................................................................................... 20
4.1.4 Configure and Trim Menu, MASTER/SLAVE ............................................................................... 21
4.2 CALIBRATION ..................................................................................................................................... 23
4.2.1 Recommended Materials ........................................................................................................... 23
4.2.2 Temperature Calibration ............................................................................................................ 24
4.2.3 Single point Calibration .............................................................................................................. 24
4.2.4 Two point Calibration ................................................................................................................. 25
4.2.5 Potassium Ion Compensation .................................................................................................... 25