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Tag Archives: pH Meter
Digital pH Meter Signal Conditioner
A pH meter circuit is basically an amplifier to boost a voltage signal which is produced by a pH probe. The pH probe itself is equal to a battery cell when submersed in the measured solution, producing a weak voltage … Continue reading
A Ph Probe Buffer Amplifier
Buffer amplifier is required by a typical pH probe to isolate its 10^6 to 10^9 ohm source resistance from external circuitry. Such an amplifier is shown in the following figure. The voltage error produced by the bias current and electrode … Continue reading
Simple pH Meter Circuit, A Low Cost Adapter for Your Digital Voltmeter
What is A pH Meter? A pH meter is actually a precise voltmeter that measures the generated voltage of a pH electrodes. The requirement of such meter is high input impedance and has the gain of voltage-pH conversion. The standard … Continue reading
