Meriam Manometers have
many advantages in this
age of technology
because of their
inherent accuracy and
simplicity. Manometers
are unique in being both
pressure measurement
instruments and
standards for
calibration of other
instruments. The
manometer is commonly
used to measure
pressures ranging from
as high as 100 inches of
2.95 Red Fluid (10.65
PSI) to the lowest
vacuums of space.
Meriam
U-Tube Manometers
The Meriam U-tube manometer is
the basic and most
widely used style of
manometer. The Meriam
U-tube manometer is a
versatile, economical
instrument for the
measurement of
pressures, vacuums or
differential pressures.
Pressure measurements
are accomplished by
balancing a vertical
head of indicating fluid
with the pressure to be
measured. There are no
cams, gears, or levers
to operate in the
manometer. This allows
the Meriam U-tube manometer to
be recognized by NIST as
a primary standard due
to its inherent accuracy
and simplicity of
operation. Meriam U-tube
manometers are
constructed of a ridged
cast aluminum frame,
aluminum indicating
scale and hand bent
glass U-tube. Mounting
holes are provided in
the frame for mounting
to a wall, column or
other suitable
structure.
Meriam
Well Type Manometers
Meriam
Well manometers are a
direct reading device
designed for process
monitoring, general
purpose production
testing or laboratory
measurement. Designed
for a maximum line
pressure of 250 PSI (500
PSI optional) these
instruments may also be
used for tank level,
flow measurement and
leak detection. Meriam Well
manometers are
constructed of aluminum
channel, stainless steel
end blocks and stainless
steel manometer well.
The 7/16” diameter glass
tubing is yoke packed
with viton gaskets at
each end block and is
supported at spaced
intervals to prevent
distortion. In most
cases, the uncertainty
of a manometer reading
is +˝ of the smallest
scale graduation. This
is due to the human
eye’s ability to
interpolate between
graduations.
Meriam
Inclined Manometers
Meriam
Inclined manometers
provide greater
readability by
stretching a vertical
differential along an
inclined indicating
column, giving more
graduations per unit of
vertical height. This
effectively increases
the instrument’s
sensitivity and
accuracy. Scales are
typically graduated to
the hundredth of an
inch. The Meriam Model 40HEX
Inclined manometer is
individually calibrated
and the angle of
inclination is set
relative to the
instrument level mounted
above the channel. The
unit is also capable of
operating with 350-PSI
line pressure. The
construction of the
Meriam 40HEX35 is similar to
the well type manometer
described above.
Additional Meriam inclined
manometers are available
depending on your
requirements. Please
review the manometer
chart on the facing page
or contact the factory
for assistance.
