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Ts series, principle of operation, Lower cost of ownership – Fill-Rite TS AA Mechanical Precision Meter User Manual

Page 3

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About FPP Meters

We thank you for purchasing an

FPP Meter

for liquid meas-

urement service.

FPP Meters

, formerly Fluid Power Prod-

ucts, is now a trade name of Tuthill Transfer Systems. FPP
was established in 1980. Since its inception, the company
has been dedicated to manufacturing cost-effective, high
performance flow metering devices for petroleum, industrial,
commercial and municipal service.

Our facilities include computerized order entry and inventory
control, so that you are assured of accurate and prompt de-
liveries. Furthermore, our production personnel ensure that
each order, regardless of size, receives individual attention.

Constant attention to new product development and produc-
tion design, our high standards of manufacture and final
testing are the reasons why

FPP Meters

meet your most

demanding requirements. With the ‘Waveform’ oval gear
(2003 patent) meter accuracy is better than ever before.

Our meters are used in batching, blending, process control
and to dispense fluids in liquid handling facilities throughout
the World. Service includes gasohol blends, bio-diesel and
special formulation racing fuels.

Principle of Operation

Positive Displacement meters have a measuring chamber,
where inlet & outlet are separated by rotors, a rotating ele-
ment or sliding vanes. As the liquid passes through the flow
meter, it causes the rotors/element/vanes to turn, which
forms the basis for volumetric measurement.

The Oval Gear metering principle is based on two elliptical
(oval) gears, which turn on center on two horizontal shafts
inside a measuring chamber formed by two overlapping cyl-
inders. The oval gears have meshing teeth along their en-
tire circumference, ensuring that the gears will maintain cor-
rect position in relation to each other at all times, without the
use of timing gears.

The volume being transferred from the
inlet to the outlet side (= volume meas-
ured), forms between the oval gear
and the side of the measuring cham-
ber, alternately in the upper and the
lower half of the measuring chamber.

In a full 360° rotation of the gears, four such known volumes
are released to the downstream side of the flow meter.

With precision machining and close internal tolerances, the
slippage is minimal for superior linearity (accuracy) over a
broad turn-down ratio. Oval gear meters are largely unaf-
fected by changes in liquid viscosity (see page 1.8).

The TS Series meter is designed to provide:

V●● Assy: Drive to a mechanical register (

this manual

).

E & F●● Assy: Electric pulse signal to an electronic
register

installed

on

the

flow

meter.

S & W●● Assy: Electric pulse signal to a remote
electronic register.

In the two electronic versions, the flow meter is 100% gland-
less with static O-ring seals only. A pulser (pulse pick-up)
detects the movement of internal magnets, to generate the
signal to the electronic register. Several types of pulse sig-
nal are available to ensure signal compatibility with all elec-
tronic registers.

Fluid Compatibility

FPP Meter

flow meters are available in anodized aluminum

and stainless steel, with a variety of rotor types, and seal &
bearing materials, to ensure compatibility with a broad range
of liquids and operating conditions. If in doubt about com-
patibility with a specific fluid or the operating conditions,
please refer to FPP210 (Liquid Compatibitily list) or
FPP200 (FPP Technical Manual)

. If those publication do

not provide a clear answer, please consult with your author-
ized FPP Meter distributor, or Customer Care at the factory.

While most refined petroleum products can be handled with
the same flow meter, some require different rotors and/or
seals.

Do not change service liquid, without consulting with

your authorized FPP Meter distributor.


Model Nominal Capacity
TS10A 40

GPM

150

lpm

TS15A 60

GPM

230

lpm

TS20A 150

GPM

570

lpm

TS30A 200

GPM

760

lpm

1 . 3

TS Series, Principle of Operation



Only 2 moving parts.



Patented ‘Waveform’ oval gears = sustained accuracy with a minimum of maintenance.



No metal-to-metal contact in measuring chamber or in bearings.



The lowest differential pressure values amongst rotary PD meters.

=> Lower Cost of Ownership!

Normal turn-down is 10:1.
Operation in excess of nominal
capacity will cause excessive
wear or premature failure.
Meters can be calibrated for
use below 10%, if the flow rate
is steady or viscosity > 50 cSt.