SN general with X transmitter0 pages

MAX FLOW SIZES FROM
0.5 TO 20 GPM (2 TO 75 LPM)

MAX LIQUID PRESSURE 300 PSI (20.69 BAR)t
MAX LIQUID PRESSURE 500 PSI (34.48 BAR) t
MAX LIQUID PRESSURE 2000 PSI (137.93 BAR)t

SN SERIES
SM SERIES
SH SERIES

Flow meters,
Flow switches and
Flow transmitters
A Small Vane Style
For Liquids

CSA Certified NRTL/C
CE Marked (as noted)
NIST Traceable Calibration
Certificate Available

DESCRIPTION
These are variable area meters
with a spring biased semi-circular
vane that opens wider with more
flow. They are installed in-line
in any position. Straight pipe
runs before or after the meter
are not required. The simple
mechanical connection directly
drives pointers, switches and
transmitters.
READOUTS
The flowmeter has outputs both
visual and electronic. Visual
displays are either pointer (with
inscribed scale) or numeric (digital
LCD). Electronic outputs can be
mechanical switch closure, 4-20
mA analog or both (for signal
redundancy). The switches can
be general purpose or rated for
hazardous locations (all classes,
groups and divisions). The 4-20
mA transmitters are Intrinsically
Safe if used with approved
barriers.

SN Series

SN091312 t

SN Series shown with
“A” style control box

CALIBRATION
All flow meters are individually
calibrated for fluids with the
viscosity you specify (up to 3000
SSU/650 Centistokes). We also
compensate for your fluid's specific gravity. For NIST Traceability
please consult factory.
CONSTRUCTION MATERIALS
The meter body, internal moving
parts, and seals are offered in a
variety of materials to suit a wide
range of applications: water, synthetic and petroleum based oils,
paint, corrosives and solvents.
See selections in the “How to
Order” section.
LINE CONNECTION
Ports can be threaded or flanged.
See selections in the “How to
Order” section.

1

C
A

B

F
D

G

E

Fluid enters at A, passes
around the semi-circular
vane B. exits at outlet C.
The vane resists the flow
because of the spring D.
The further the vane is
pushed the larger the passageway E becomes. This
minimizes the pressure
drop. The vane shaft turns
to operate the pointer F
and remote signal devices
such as the switch G.

Viton® and Kalrez™ are registered trademarks
for DuPont Performance Elastomers.