Contents
1. Introduction..............................................................................................2
1.1 901-C Display and Controls ..............................................................................2
1.2 901-C Rear Panel Connectors............................................................................2
1.3 901-C Front Panel.............................................................................................3
1.4 Unpacking Information .....................................................................................4
1.5 Specifications....................................................................................................5
2. Operating Modes...................................................................................... 8
3. Conductivity Calibration..........................................................................9
3.1 Calibration Procedure........................................................................................9
3.2 Calibration Notes ............................................................................................10
3.3 Calibration Messages ......................................................................................11
4. TDS Calibration...................................................................................... 12
4.1 Calibration Procedure......................................................................................12
4.2 Calibration Notes ............................................................................................13
4.3 Calibration Messages ......................................................................................14
5. Temperature Calibration........................................................................ 15
5.1 Calibration Procedure......................................................................................15
5.2 Calibration Notes ............................................................................................15
5.3 Calibration Messages ......................................................................................16
6. RS232 Port.............................................................................................. 17
6.1 Setting the Baud Rate......................................................................................17
6.2 Sending Readings to the RS232 Port................................................................17
6.3 RS232 Configuration ......................................................................................18
6.4 Communication and Statistical Software..........................................................18
6.5 Commands......................................................................................................18
7. Recorder Output Option ........................................................................ 20
7.1 RS232 / Recorder Output Socket Connections .................................................21
8. Selecting k=10 or k=0.1 Sensors........................................................... 22
9. Initialising the 901-C .............................................................................. 23
10. Troubleshooting................................................................................. 24
10.1 General Error Messages ..............................................................................24
10.2 Conductivity and TDS Troubleshooting.......................................................25
10.3 Temperature Troubleshooting......................................................................26
11. Appendices......................................................................................... 27
11.1 Care, Cleaning and Maintenance of Conductivity Sensors............................27
11.2 Replatinising Conductivity Sensors .............................................................28
12. Warranty ............................................................................................. 29
