Digital Gas Flow Meter

within the working range of the meter the rotor spins
proportional to the actual velocity of gaseous material
flowing. a pick-up sensor produces an electrical signal as
each blade crosses through its low magnetic or rf
field. this signal is amplified and conditioned by a
transmitter or fed directly into a ratetotalizer, and represents
the actual cubic feet per minute (acfm) flowing
through the meter. the k-factor is stenciled on the
meter body in pulses per actual cubic feet (pacf).
because gases are compressible, most people desire
to measure the equivalent amount of gas corrected for
the line pressure and temperature to standard cubic
feet per minute (scfm at 60ã�â°f, 14.69 psia). if the
flow temperature and pressure are relatively constant,
then a simple correction can be calculated to shift the
k-factor from pacf to pscf and a simple totalizer
(measurement systems india make ) may be used. when flow
temperature and pressure are not constant, a flow computer.
specifications
linearity 1
ã�â±1.0%0.5%
repeatability 1
ã�â±0.25%
maximum over-range
125% of flow rate for intermittent periods
frequency output
0 to 1,100 hz
voltage output
approximately 100 mv@ 100 hz to 1.5 v (rms)@
1,000 hz.
pressure drop
0.5 psi at 100% of flow range
pressure rating we manufacture flowmeters for most pressures.
installation
vertical or horizontal (any direction).
materials of construction
body: 316 l stainless steel.
flanges: 316 stainless steel
rotor: 431 stainless steel.
rotor shaftbearings:
standard: tungsten carbide v-cup
cartridge frame retainer: 302 stainless steel
cartridge frame: 316 l stainless steel.
temperature range:meter with bearing structure of:
for other temperatures consult factory.