3
2
Table of Contents
1. Introduction..............................................................................................4
2. Display and keypad functions ...............................................................5-6
2.1 Display......................................................................................................................................5
2.2 Keypad .....................................................................................................................................6
3. Preparation..........................................................................................7-11
3.1 Inserting the batteries.............................................................................................................7
3.2 Connecting the electrode and temperature probe..........................................................8-9
3.3 Attaching the electrode holder to the meter.....................................................................10
3.4 Inserting the electrode into the electrode holder .............................................................11
4. Calibration .........................................................................................12-17
4.1 Important information on meter calibration....................................................................12
4.2 Preparing the meter for calibration ...................................................................................13
4.3 pH calibration..................................................................................................................14-15
4.4 Relative mV calibration .......................................................................................................16
4.5 Temperature calibration ......................................................................................................17
5. Measurement .....................................................................................18-21
5.1 Automatic Temperature Compensation............................................................................18
5.2 Manual Temperature Compensation.................................................................................19
5.3 Taking Measurements ....................................................................................................20-21
6. Hold function..........................................................................................22
7. Memory functions .............................................................................23-24
7.1 Memory Input .......................................................................................................................23
7.2 Memory Recall ......................................................................................................................24
8. Advanced setup functions .................................................................25-39
8.1 Advanced setup mode overview ..................................................................................26-27
AP71 meter ...........................................................................................................................26
AP72 meter ...........................................................................................................................27
8.2 Program 1.0: Memory clear.................................................................................................28
8.3 Program 2.0: Viewing previous calibration data .............................................................29
8.4 Program 3.0: Viewing electrode data ...........................................................................30-31
P3.1 Electrode offset ............................................................................................................30
P3.2 Electrode slope.............................................................................................................31
8.5 Program 4.0: Unit configuration ...................................................................................32-33
P4.1: READY indicator and auto endpoint function......................................................32
P4.2: Selecting number of pH calibration points ............................................................33
P4.3: Calibration buffer selection sets (AP72 meter only) ...............................................34
P4.4 Selecting °C or °F (AP72 meter only) .........................................................................35
8.6 Program 5.0: Resetting to factory default settings (AP71 meter only) ...........................36
8.7 Program 5.0: Setting the real-time clock (AP72 meter only).......................................37-38
8.8 Program 6.0: Resetting to factory default settings (AP72 meter only) ...........................39
9. Probe care and maintenance ............................................................40-41
10. Troubleshooting ...................................................................................42
11. Error Messages......................................................................................43
12. Specifications........................................................................................44
Summary of Contents for AP71
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