Chanscope II and Standard Bureau of Mines Dew Point Tester0 pages

CHANDLER ENGINEERING

®

PROCESS INSTRUMENTS

Dew Point Testers

Bureau of Mines-Type Dew Point Tester from AMETEK
Features
►t Meets ASTM D1142
►t Portable and rugged for
repeatable results
►t No calibration needed
►t RTD traceable to NIST
(Chanscope II)
►t Easy to maintain and use

Applications
►t Natural Gas
t Designed for accuracy in the
rugged environment typically
found in the gas industry. A
special model is available for
offshore use.
►t Sour Gas
t Corrosion-resistant materials are
used for H2S atmospheres.
►t Industrial Gases
t The tester is ideally suited for the
measurement of the dew point of
pressurized N2, O2, H2, Ar, air, and
other bottled gases.

Bureau of Mines Model

Operation

The Chandler Bureau of Mines Dew
Point Tester is a primary instrument
used to measure the dew point
temperature of any gas. It is rugged,
portable, and can provide very
repeatable results. Because of its
primary nature, the standard dew
point tester requires no calibration.
Consequently, it is frequently
used to verify results of electronic
instruments.

The Chandler “Bureau of Minestype” Dew Point Tester consists
of a small high pressure chamber
through which the gas sample
flows. A polished mirror is at one
end of the chamber and a viewing
window at the other. The operator
controls an expandable gas through
a valve, cooling the polished mirror
until the dew point is observed. The
observed dew point temperature
and pressure may be entered into
the moisture content software
supplied with the dew point tester
to calculate the water content of the
sample. Hydrocarbon dew points in
natural gas can be obtained using
the same method.

t The Chandler Dew Point Tester is
a chilled mirror device that operates
by achieving the conditions required
by the definition of dew point.
When a gas is cooled out of contact
with liquid water, the humidity or
water content remains constant,
but the percentage of saturation
increases until it reaches 100% and
moisture begins to condense. The
temperature at this point is known
as the dew point or frost point.

►t Heat Treating Furnaces
t Chandler instruments are easy
to use and produce reliable,
accurate answers. They have
been used for years in this
application.

The Chandler Dew Point Tester
is a chilled mirror device that
operates by achieving the
conditions required by the
definition of dew point.
The Chanscope II version allows lighted,
magnified viewing of the dew point with a digital
temperature display superimposed on the viewing
window in tenths of degree.

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