The first ZrO2 square works as an electrochemical oxygen pump, evacuating or re-pressurising the hermetically sealed chamber. Depending on the direction of the DC constant current source, the oxygen ions move through the plate from one electrode to the other, this in turn changes the oxygen con...
The blood oxygen sensor is built into the back of the Apple Watch. It uses four clusters of red, green and infrared LED lights and four photodiodes, devices that convert light into an electrical current. The lights shine onto the blood vessels in your wrist and the photodiodes measure how m...
Specific antibodies bind only to specific virus antigens, so different types of sensors detect different types of diseases (see How Your Immune System Works to learn more). The idea is that when these antibody-based sensors start reacting -- that is, binding to particles in the air -- we ...
Before one can understand the PWC hardware circuitry and control software, it helps to understand how the wideband oxygen sensor [WBO2] operates (These sensors are also known as universal exhaust gas oxygen sensors [UEGO]). The Precision Wideband Controller is designed to use the latest 'wide ...
How the Alcosensor III or IV Works Modern fuel-cell technology (which may power our cars and even our houses some day) has been applied to breath-alcohol detectors. Devices like the Alcosensor III and IV use fuel cell sensors. The fuel cell has two platinum electrodes with a po...
One of the largest barriers to the search for good water quality data is the threat of fouling, which is why having a strong anti-fouling plan in place for...
How the Alcosensor III or IV Works Modern fuel-cell technology (which may power our cars and even our houses some day) has been applied to breath-alcohol detectors. Devices like the Alcosensor III and IV use fuel cell sensors. The fuel cell has two platinum electrodes with a po...
The second concern comes for people who are taking drugs like nitroglycerin for angina. Nitroglycerin works by increasing nitric oxide, and it helps with angina by opening up the arteries that supply the heart with oxygen. If you take nitroglycerin and Viagra together, the increased nitric oxide ...
Oxygen sensor(s) - Monitors the amount of oxygen in the exhaust so the ECU can determine how rich or lean the fuel mixture is and make adjustments accordingly Throttle position sensor - Monitors the throttle valve position (which determines how much air goes into the engine) so the ECU can...
see this chart of the air-fuel ratio sensor signal on a scan tool: when the engine is revved, the signal jumps to "rich", then as the RPM drops and the fuel is cut off, the sensor indicates "lean". After that, the signal goes back to normal. This air fuel sensor works properly....