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65 Cards in this Set
- Front
- Back
- 3rd side (hint)
An on-line analyzer provides as accurate results as lab analyzers do. |
F |
T o F |
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In a NDIR analyzer, it can also use a luft-type sensor |
T |
T o F |
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A combustion analyzer is used to measure the composition of boiler combustion gases |
T |
T o F |
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The measurement of oxygen is not very important, since it is not used very much in the chemical process. |
F |
T o F |
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Electrochemical oxygen analyzers need to have the electrolyte checked on a regular basis. |
T |
T o F |
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Opacity is measured by the amount of light that is received at the detector |
T |
T o F |
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All gases conduct heat |
Yes |
Y o N |
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_ is the process of measuring the physical, chemical, or electrical properties of chemical compounds so that the composition and quantities of the components can be determined. |
Analysis |
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An _ is an instrument used to provide an analysis of a sample from the process |
Analyzer |
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An _ is an instrument that is located in the process area and obtain frequent or continuous samples from the process. |
Online Analyzer |
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A _ is an instrument that measures the concentration of an individual gas in a gaseous sample |
Gas analyzer |
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A _ is a gas analyzer that measures the concentration of a single gas in a sample by comparing its ability to conduct heat to the ability of a reference gas to conduct heat. |
Thermal conductivity |
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Two-chamber designs for a thermal conductivity analyzer allow a sample gas to be compared to a _ gas |
Reference |
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The thermal conductivity detector can be a _ or _ design. |
2 chamber or 4 chamber |
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A _ is a gas analyzer that uses the principle that different gases absorb different, very specific, wavelength of electromagnetic radiation in the infrared or ultraviolet regions of the electromagnetic spectrum |
Radiant-energy absorption |
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A _ is a radiant-energy absorption analyzer consisting consisting of an IR electromagnetic radiation source, an IR detector, and 2 IR absorption chambers. |
Nondispertion infrared |
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In a NDIR analyzer, on chamber contains the _ gas, and the other contains the _ |
Reference & Sample |
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In a _ sensor, the sample gas absorbs the IR radiation and heats up, while the reference gas does not absorb the IR radiation. |
Luft Type |
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An NDIR analyzer is very specific for a _ suitable gas regardless of the composition of the background gases because the absorption of infrared radiation is _ related to the structure of the molecule |
Single & directly |
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NOX contributes to _, _, and _ in our cities |
Acid Rain, ozone, smog |
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An _ is a radiant-energy absorption analyzer consisting of a UV electromagnetic radiation source, a sample cell, and a detector that measures the absorption of UV radiation by the specific molecules. |
Ultraviolet Analyzer |
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_ is necessary to support nearly all combustion reactions. |
Oxygen |
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A _ is an analyzer consisting of 2 diamagnetic spheres filled with nitrogen which are connected with a bar to form a "dumbbell" shaped assembly. |
Paramagnetic oxygen analyzer |
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An English chemist by the name of Michael Faraday discovered paramagnetism through his observation of how materials respond to _ |
Magnetic Field |
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A _ is an analyzer consisting of sensing head that uses magnetic fields to generate a "magnetic wind" that carries the oxygen-containing gas sample through a sample cell and across a pair of thermistors. |
Thermoparamagnetic oxygen analyzer |
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A _ analyzer is an analyzer that measures an electric current generated when the analyzer is subjected to different oxygen concentrations on opposite sides of an electrode. |
Zirconium oxide analyzer |
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An _ analyzer is a analyzer that measures an electric current generated by the reaction of oxygen with an eletrolytic reagent |
Electrochemical oxygen |
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An _ is a gas analyzer consisting of a focused light source and an analyzer to measure the received light intensity |
Opacity analyzer |
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A _ is an instrument that measures the amount of humidity in air. |
Humidity analyzer |
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_is the ratio of the mass of water vapor to the mass of dry air |
Humidity ratio |
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_ is the ratio of the actual amount of water vapor in the air to the maximum amount of water vapor possible at the same temperature. |
Relative Humidity |
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When the relative humidity is 100%, the air is said to be _ |
Saturated |
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_ is the ratio of the mass of water vapor to the mass of dry air plus moisture. |
Specific humidity |
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_ is the ambient air temperature measured by a thermometer that is freely exposed to the air but shielded from other heating or cooling effects. |
Dry Bulb temp |
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_ is the lowest temperature that can be obtained through the cooling effect of water evaporating into the atmosphere. |
Wet Bulb temp |
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A _ is a combination of a hygrometer, pressure sensor, and temperature-sensing instrument with digital processing to calculate relative humidity, absolute humidity, dry bulb temperature, dewpoint reading, and other properties for local display or transmission |
Thermohygrometer |
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A sample that is used in an analyzer may be in the form of. |
Gas, liquid, solids |
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What is one thing that an online analyzer provides. |
Rapid Results |
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Name the common types of online analyzers. |
Gas , humidity , solids |
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What is one thing all gas analyzer have in common? |
Clean, constant temp, constant pressure |
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Name the most common types of gas analyzers. |
Thermal Conductivity, radiant energy absorption, oxygen |
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The most common type of radiant-energy absorption analyzers are? |
Nondispersive IR, UV analyzers |
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what flue gases are NDIR analyzers commonly used to monitor from combustion processes? |
Carbon Dioxide, Nitrogen Oxide, Sulfuroxide, Methane |
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What is the largest source of NOX emissions. |
Powerplants |
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Air contains what percentage of oxygen? |
21% |
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Common types of oxygen analyzers are ? |
Paramagnetic, thermaparamagnetic, electrochemical, zirconium |
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Air contains what percentage of nitrogen? |
78% |
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A zirconium oxide oxygen analyzer need to operate at temperatures above about what temperature? |
1000 F |
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What are the 2 designs of an opacity analyzer? |
Single pass, Dual pass |
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What is a common application for an opacity analyzer? |
Measures the amount of particular matter in a flue stack |
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What is another name for humidity ratio? |
Absolute humidity |
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What are 2 common types of psychrometers? |
Recording, sling |
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What instruments have mostly replaced the sling psychrometer because they provide a direct readout in readout in relative humidity values? |
Hygrometer, Thermohygrometer |
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What forms when air cools below the dewpoint? |
Clouds |
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The primary element for an electrical hygrometer is what? |
Capacitance probe |
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In many industrial processes, what is more significant than relative humidity? |
Dewpoint temperature |
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Air dryers are manufactured to keep the dewpoint of instrument air at what temperature? |
-40 |
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Define Humidity |
Amount of water vapor in a given amount of air or other gas |
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_ is the temperature to which air must be cooled for the air to saturated with the water and any further cooling result in water condensing out |
Dew point |
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A _ graphically combined the properties of most air at standard atmospheric pressure (14.7 psi) into one graph |
Psychometric Chart |
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A _ is a humidity analyzer that uses two thermometers with the bulb of one kept dry, and the bulb if the other one kept wet. |
Psychrometer |
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A _ is a psychrometer consisting of a wet and dry bulb thermometer connected to a recorder |
Recording psychrometer |
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A _ is a psychrometer consisting of two glass thermometers attached to a assembly that permits the two thermometers to be rotated through the air. |
Sling Psychrometer |
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A _ is a humidity analyzer that measures the physical or electrical changes that occur in various materials as they observe or release moisture |
Hygrometer |
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A _ is a material that readily absorbs and retains moisture with the increases in humidity and releases moisture with decreases in humidity |
Hygroscopic materials |
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