Glossary of Terms
EVM Series User Manual
Correction Override
Factor
This is the correction override factor that is applied during your run or after a run for
particulate measurements or PID (VOCs) measurements. In DMS, an override factor
can be applied after a run via the Correction Override icon. The applied dust override
is displayed in the General Data Panel (if selected under the sensor data list).
The dew point measurement is the absolute measurement of the amount of water
vapor in the air (indicating how much humidity is in the air). It is also defined by
Wikipedia as, “the temperature to which a given parcel of air must be cooled, at
constant barometric pressure, for water vapor to condense into water. The
condensed water is called dew. The dew point is also referred to as the saturation
point”.
Is a percentage of signal loss of a gas sensor per month.
This is required to cover a sensor socket when no sensor is present to maintain unit
to environment sealing capability.
When setting up the Dust profile in DMS, there is an active profile field. The Dust
Override profile field corresponds with the active (or applied) dust profile.
Dust is typically known as a type of particulate matter or an aerosol with a miniscule
diameter of 0.1 μm upwards.
This is the surrounding of a person by finely divided solids or a liquid. A worker in a
storage tank filled with sawdust, for example, could fall into an air pocket, be
completely surrounded by sawdust, and suffocate to death.
Filtered CO sensor vs.
Unfiltered
There is a high cross-sensitivity between CO and H
2
S. A filtered CO sensor lessens
the sensitivity of the sensor to H
2
S.
A term for the three components required to start a fire: fuel, oxygen, and ignition.
Describes an analytical chemistry methodology for determining the quantitative mass
of a solid. The EVM collects particulates in an internal gravimetric sample holder that
are filtered, collected, and weighed to determine the severity of the worker exposure.
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