In this lab testing, we connected pH and reference electrodes provided by Dr. Hintz to INA116 amplifier. The amplifier was powered with 12 V DC batteries. During our testing we experienced more stability in the output using batteries as oppose to AC to DC power supply.  The output of INA116 was connected to an oscilloscope and ADC ( provided by Dr. Hintz). Through ADC we were able to read output as displayed on the GUI.

Modification to amplifier circuit: Please refer to Menu TAB (Issues/Fixes) for more information.

1. pH 4 buffer fluid test

2. pH 7 buffer fluid test

3. pH 10 buffer fluid test

In this lab testing, we connected pH and reference electrodes provided by Dr. Hintz to INA116 amplifier. The amplifier was powered with AC to DC power supply provided by Dr. Hintz. The output of INA116 was connected to an oscilloscope.

1. pH 4 buffer fluid test

2. pH 7 buffer fluid test

3. pH 10 buffer fluid test

VIDEO 1: Introduction of INA116 Instrumental Amplifier

VIDEO 2: INA116 Testing with Ph Probe

VIDEO 3: INA116 pH Measurement with ADC