Archive for October, 2014
During our lab testing with pH and reference electrodes provided by Dr. Hintz, we found the reference electrode to be very sensitive to any movement around it even though the electrodes were enclosed inside a Faraday box . Thus, causing output signal to shift up/down. Per our group conversation with Mr. Marc Hebert at Microelectrodes, he recommended to […]
ASTEC AA16130 power supply provided by Dr. Hintz for our senior design project is being used to power up Dr. Hintz’s alkalinity measurement protoytpe and also our INA116 amplifier. During our lab testing we found out that the (-12 V) outputted by the power supply had a AC ripple as to clean DC signal. In […]
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 […]
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 […]