2B Technologies 211 Manuel - Page 2

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2B Technologies 211 Manuel

PRINTING HISTORY

This manual covers the Portable N
Ozone Monitor and the Model 408 NO Calibration Source. New editions of this manual
are complete revisions that reflect updates to the instrument itself, as well as
clarifications, additions and other modifications of the text.
Revision A .............................................................................................................. 2008
Revision B ............................................................................................ September 2016
Revision B-2 .......................................................................................... December 2017
(Clarifications regarding the use of different sizes of N
1. WARNINGS
Nitrous oxide (N
O) is supplied by a cartridge containing liquid N
2
pressure inside the cartridge of 58.5 bar at 20°C. These cartridges are the same or
similar to ones sold as a consumer product for producing whipped cream. Nitrous
oxide or "laughing gas" is also used as a general anesthetic at concentrations up to
50% and is thus well tolerated by humans. There are no known toxicological effects
of N
O other than asphyxiation at extremely highly concentrations due to exclusion of
2
oxygen. N
O is not itself combustible, but it strongly supports combustion of organic
2
materials and reducing agents. Contact with liquid N
cooling as the liquid rapidly evaporates. If an N
piercing device/regulator, the cartridge will act as a "rocket."
cartridges are commonly used consumer products available commercially and are
safe to handle if the procedures below are followed.

2. INSTALLATION

The Portable N
O Source is a standard feature of the Model 408 NO Calibration
2
Source and the Model 211 Scrubberless Ozone Monitor. A piercing device is used to
open disposable liquid N
integrated pressure regulator drops the pressure before delivering N
to the instrument. A pressure gauge shows the pressure inside the cartridge, where a
drop in pressure (<~600 psi) indicates that the cartridge is almost empty. Either 8-
gram or 16-gram N
2
O Source, which is used with the Model 211
2
O cartridges that are loaded in the cartridge cup, and an
2
O cartridges may be used.
O cartridges; other minor edits.)
2
O can cause frost bite due to
2
O cartridge is punctured outside the
2
Portable N
1
O having a vapor
2
However, the N
O
2
O (nitrous oxide)
2
O Source Manual Rev. B-2
2