Page 2
Contents
1.
Introduction ..............................................................................................4
1.1
WP-91 Display and Controls ...............................................................4
1.2
Unpacking Information ........................................................................6
1.3
Specifications......................................................................................7
2.
WP-91 Menu Structure............................................................................10
3.
Oxygen Operating Modes ......................................................................11
4.
Dissolved Oxygen Calibration ...............................................................13
4.1
Calibration Procedure........................................................................13
4.2
Measurement Notes: .........................................................................15
4.3
Calibration Notes...............................................................................15
4.4
Calibration Messages ........................................................................16
5.
pH Calibration .........................................................................................17
5.1
Calibration Procedure........................................................................17
5.2
Calibration Notes...............................................................................19
6.
mV Calibration ........................................................................................19
7.
Temperature Calibration ........................................................................20
7.1
Calibration Procedure........................................................................20
7.2
Calibration Notes...............................................................................20
7.3
Calibration Messages ........................................................................21
8.
Salinity Correction..................................................................................22
9.
Altitude or Atmospheric Pressure Correction.......................................23
9.1
Selecting Altitude or Pressure Correction ..........................................23
9.2
Changing the Altitude or Pressure Correction value...........................24
9.3
Notes ................................................................................................25
10.
Good Laboratory Practices (GLP)......................................................26
10.1
To recall GLP information on the display .......................................26
10.2
Failed Calibration ..........................................................................28
10.3
Printing GLP Information to the RS232 Port ..................................29
10.4
Instrument Serial Number..............................................................30
10.5
Additional GLP Features ...............................................................30
11.
Notepad Function ...............................................................................31
11.1
Recording Readings into the Notepad............................................31
11.2
Recalling Records from the Notepad .............................................31
11.3
Erasing Records from the Notepad................................................32
11.4
Printing Records from the Notepad to the RS232 Port ...................33
12.
Automatic Datalogging.......................................................................34