Tech Note 1120 Detail

Oxygen gas sensor is sensitive to changes in ambient pressure.

Affected Products:

PS-2126 PASPORT Oxygen Gas Sensor
PS-2126A PASPORT Oxygen Gas Sensor
CI-6562 Oxygen Gas Sensor

Problem/Symptom:
Oxygen gas sensor is sensitive to changes in ambient pressure.

PASCO Solution:

For best results when using the oxygen gas sensors, maintain the same ambient pressure throughout the experiment. The sensor works by detecting the partial pressure of oxygen within the sampled gas. If the pressure of the gas is increased (without changing the proportions of the contituent gases), the reading for the % oxygen will increase due to the increase in the oxygen partial pressure even though the % oxygen within the sample has not changed.

Creation Date: 11/10/2010
Last Modified: 11/10/2010
Mod Summary: