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Contents
1. Introduction........................................................................................ 4
1.1WP-81T Display and Controls............................................................................. 4
1.2 Unpacking Information ...................................................................................... 6
1.3 Specifications ..................................................................................................... 7
2. WP-81T Menu Structure .................................................................... 9
3. Operating Modes ............................................................................. 10
4. Conductivity Calibration.................................................................. 11
4.1 Calibration Procedure....................................................................................... 11
4.2 Calibration Notes ............................................................................................. 12
4.3 Calibration Messages ....................................................................................... 12
5. TDS Calibration................................................................................ 13
5.1 Calibration Procedure....................................................................................... 13
5.2 Calibration Notes ............................................................................................. 14
5.3 Calibration Messages ....................................................................................... 14
6. pH Calibration .................................................................................. 15
6.1 Calibration Procedure....................................................................................... 15
6.2 Calibration Notes ............................................................................................. 16
6.3 Calibration Messages ....................................................................................... 16
7. Temperature Calibration ................................................................. 17
7.1 Calibration Procedure....................................................................................... 17
7.2 Calibration Notes ............................................................................................. 17
7.3 Calibration Messages ....................................................................................... 17
7.4 Manual Temperature Setting ............................................................................ 18
8. Good Laboratory Practices (GLP) .................................................. 19
8.1 To recall GLP information on the display ......................................................... 19
8.2 Failed Calibration............................................................................................. 20
8.3 Printing GLP Information to the RS232 Port .................................................... 20
8.4 Instrument Serial Number ................................................................................ 21
8.5 Additional GLP Features .................................................................................. 21
9. Notepad Function ............................................................................ 22
9.1 Recording Readings into the Notepad ............................................................... 22
9.2 Recalling Records from the Notepad................................................................. 22
9.3 Erasing Records from the Notepad ................................................................... 22
9.4 Printing Records from the Notepad to the RS232 Port ...................................... 23