LN series0 pages

MAX FLOW SIZES FROM
80 TO 500 GPM (300 TO 1800 LPM)

MAX LIQUID PRESSURE 300 PSI (20.69 BAR)
MAX LIQUID PRESSURE 1000 PSI (68.97 BAR)

LN SERIES
LE SERIES

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

45

CSA Certified NRTL/C
CE Marked (as noted)
NIST Traceable Calibration
Certificate Available
DESCRIPTION
These variable-area flow meters
have a spring-loaded swinging
vane. Mounting is in-line and in
any position. Straight pipe runs,
before or after the meter, are
not required. The all-mechanical
sensing system directly drives
the pointer, switches and transmitters. This swinging vane can
be manually operated with a
wrench (factory supplied) to verify or adjust switch points or to
free the vane should it become
lodged by debris in the fluid.
READOUTS
The flowmeter has outputs both
visual and electronic. Visual
displays are either pointer (with
inscribed scale) or numeric. Signal 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.

CALIBRATION
All flow meters are individually calibrated for fluids with
the viscosity you specify (up to
3000 SSU/660 Centistokes). We
also compensate for your fluid’s
specific gravity. For NIST Traceability please consult factory.

D

CONSTRUCTION MATERIALS

A

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, some corrosives, solvents, air and gases.
See selections in the “How to
Order” section.
LINE CONNECTION
Ports can be from 1-1/2 to
4 inches. All connections and
types are specified in the “How
to order” section.

C
G
B
E

F

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 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 trademark
for DuPont Performance Elastomers.
LN Series

LN081512 t

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