A
A P P E N D I X
Appendix A
Technical Aspects
27
This appendix describes technical aspects of the pH Amp to give some
insight into how it works. You do not need to know the material here
to use the pH Amp. It is likely to be of interest to the technically
minded. (However, you should not use it as a service manual: user
modification of the equipment voids your rights under warranty.)
pH Amp Operation
The pH Amp and other ADInstruments front-ends have been
designed to be used with a PowerLab system. The pH Amp is an
extension of the PowerLab’s analog inputs. It provides:
•
a very high impedance amplifier suitable for direct connection to
pH or other ion selective electrodes;
•
software controlled filtering for the pH channel;
•
reference electrode input;
•
software selectable electrode sensitivity;
•
a temperature amplifier, factory configured for use with an RTD
temperature probe.
A
Technical
Aspects
Summary of Contents for pH Amp
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