mercury manometer

mercury manometer

[′mər·kyə·rē mə′näm·əd·ər]
(engineering)
A manometer in which the instrument fluid is mercury; used to record or control difference of pressure or fluid flow.
References in periodicals archive ?
There was a mercury manometer to measure the air pressure, the ability to add oxygen to the air and a foot pump as a safety mechanism ".
A glass tube dipped in mercury provided a primitive 'blow off' valve, and there were three taps--two before the ether bottle to control the pressure of air from the blower and allow admission of oxygen and/or nitrous oxide, and one on the other side, adjacent to a mercury manometer that allowed the anaesthetist to reduce the pressure in the trachea to zero if required.
The gas pressure scale which existed prior to 2008 used secondary standard piston gauges traceable to a mercury manometer known at NIST as the Gas Thermometer Manometer (GTM) (4).
They are further validated by comparison of the gauges to the NIST mercury manometer, which is an independent primary pressure standard traceable to the density and speed of sound of mercury.
As for equipment, the mercury manometer remains the standard.
As for equipment, the mercury manometer remains the standard, and every facility should have at least one that can be used to calibrate automated machines.
The actual risks of toxicity from the mercury in the mercury manometer seemed to be dwarfed by the consequences of the widespread use of inaccurate aneroid devices.
Your equipment should be checked against a standard mercury manometer at least every six months.
All of the sites used aneroid devices exclusively, but most of the personnel using these devices had no idea that these are supposed to be standardized to a mercury manometer.
His work was hampered by mercury manometers which responded slowly and dampened the oscillations.
The pressure standard in the atmospheric pressure range at the National Institute of Standards and Technology (NIST) is presently established using mercury manometers (1-4).
customer locations which use or previously used mercury manometers to