INSTRUCTION MANUAL
Discontinued
Model 220, 221 and 222 FLOW METERS
TABLE OF CONTENTS
Do’s and Don’ts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 2
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 2
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 3
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 4
Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 5
Assembly Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 6, 7
Graphs:
220 Series Linearity . . . . . . . . . . . . . . . . . . . . . . .Pg. 8
220 Pressure Drop . . . . . . . . . . . . . . . . . . . . . . . .Pg. 9
221 Series Linearity . . . . . . . . . . . . . . . . . . . . . . .Pg. 10
221 Pressure Drop . . . . . . . . . . . . . . . . . . . . . . . .Pg. 11
222 Series Linearity . . . . . . . . . . . . . . . . . . . . . . .Pg. 12
222 Pressure Drop . . . . . . . . . . . . . . . . . . . . . . . .Pg. 13
MA 220-000-350 © 2004, Max Machinery, Inc.
Max Machinery, Inc. reserves the right to make changes to the product in this Instruction
Manual to improve performance, reliability, or manufacturability. Consequently, contact
MMI for the latest available specifications and performance data.
Although every effort has been made to ensure accuracy of the information contained in
this Instruction Manual, MMI assumes no responsibility for inadvertent errors.
Do’s & Don’ts, General Description
Discontinued
DO’S & D
DO: Read entire manual before installation. If you need further information, contact
DO: Install proper filtration immediately upstream of the flow meter.
DO: Install bypass plumbing around the flow meter. Use the bypass during start-up
DO: Be very careful to keep all parts clean during installation or teardown. Alittle
DON’T: Run water or aqueous solutions not approved by MAX through your flow meter
DON’T: Steam clean the meter (bypass or remove the meter if necessary).
DON’T: Blow down the meter with compressed air, gas, etc., because it will overspeed
ON’TS
:
MAX and ask for Flow Meter Technical Service.
while flushing the system to (1) remove dirt by filtration and (2) bleed air and
vapor from the system. Open the meter valves slowly on start-up to avoid over-
speeding the meter with entrapped air. The bypass allows removal of the meter
for service without disabling the system.
dirt on a fitting or in a line (from the floor, bench, etc.) looks like a truckload
on a microscopic level. Any dirt introduced into the system between the filter
and meter will not be filtered out.
because of internal galling.
and possibly damage the meter.
DON’T: Turn on the pump in a system filled with material which is a solid at room tem-
perature until the material has been melted completely. Use a bypass around the
meter during start up.
DON’T: Apply excessive differential pressure across meter (see pressure drop curve safe
zone) as it will cause internal parts to fail.
DON’T: Over pressurize the meter. Please refer to specifications for maximum operat-
ing pressure.
DON’T: Exceed the maximum flow rates specified (see performance curves) as it will
cause internal parts to fail.
G
ENERAL
MAX 220, 221 and 222 Series are positive displacement, high-pressure, gear type flow
meters, similar in design to a conventional hydraulic motor. The flow of fluid through the
meter turns a set of gears which drive a precision transmitter through a magnetic coupling.
This generates an analog or pulse signal proportional to the volumetric flow rate.
The flow range and pressure drop through the 220 Series Flow Meter depend upon the viscosity of the fluid to be metered. Normally, these flow meters are utilized on liquids having viscosities in excess of those recommended for turbine or variable area (rotameter) flow meter.
D
ESCRIPTION
:
Page 2 220-000-350 © 2004 Max Machinery, Inc.
Applications, Specifications
Discontinued
A
PPLICATIONS
Although originally designed for the metering of rigid urethane foam components, the
Model 220, 221 and 222 Flow Meters have found wide application in the following areas:
• Unsaturated polyester resins, especially in spray-up applications.
• Other non-corrosive chemicals and resins of high viscosity.
• Lubricating oils and other high viscosity petroleum products at low flow rates.
• Metering of silicone and tin catalyst components in flexible urethane foam production
systems.
• Metering of pre-polymer and catalyst components for semirigid urethane foam crash-pad
and other automotive trim component production.
• Other applications where conventional flow metering systems are affected by product
viscosity or where the flow rate to be measured is below the minimum recommended
flow of conventional positive displacement flow meters.
:
• High-pressure applications where conventional flow metering devices are not applicable.
For applications outside the area of rigid and flexible urethane foams or petroleum products,
it is recommended that the factory be consulted regarding the material to be metered for specific application assistance.
S
PECIFICATIONS
Maximum case pressure
bar (psi) (standard) 105 (1,500)
Port Size, inches (standard) 1/2 NPTF (optional) 7/8-14 SAE
:
MODEL 220 MODEL 221 MODEL 222
(high pressure) 210 (3,000)
Filtration required
(mesh minimum) 60
(mesh recommended) 80 - 100
272 Transmitter output 10 V F.S.
276 Transmitter output 4-20mA
284 Transmitter output 10.97 pulses/cc 4.26 pulses/cc 2.11 pulses/cc
Displacement (cc/revolution) 9.12 23.53 47.4
NOTE: Fluid acceleration should be limited to 75 liters per minute per second to prevent de-cou pling the transmitter from the drive magnet. This limitation is due to the inertia of the transmitter
magnet and rotor system and is an inherent characteristic of any magnetically coupled device.
220-000-350 © 2004 Max Machinery, Inc. Page 3
Installation
Discontinued
I
NSTALLATION
Prior to installing the flow meter,
determine that the gears turn freely
by rotating them through the connection ports by means of plastic or
fiber rod (do not use a steel rod to
rotate gears due to hazards of
scratching the sealing surface).
Make sure that adequate filtration
exists upstream of the flow meter
and that no contaminants exist in
the line between the filter and flow
meter.
It is recommended that the flow
meter be connected to the circuit by
means of unions close to the flow
meter to allow easy removal for
maintenance.
:
A by-pass valve should be installed
between the inlet and outlet ports of
the flow meter to allow flow
through the system in the event that
the flow meter should become
blocked by foreign material.
For the best low flow accuracy, the
flow meter should be mounted with
the transmitter tube in a horizontal
position like the drawing indicates.
Consult the transmitter manual for
information on adjustment and utilization of the flow signal. See also
manuals on any readout instrument
purchased with the flow meter.
Page 4 220-000-350 © 2004 Max Machinery, Inc.
Troubleshooting, Maintenance
Discontinued
T
ROUBLESHOOTING
Problem Cause Solution
Material will not pass Solid particle in Disassemble and remove
through flow meter. gears or hardened particle or clean.
Material flows through Solid particle in Disassemble and remove
flow meter, but transmitter gears. particle.
does not run and pressure
drop is high.
Material flows through Frozen or hard Warm flow meter or
flow meter. Meter sounds material in magnet disassemble and clean.
like it runs but trans- shield.
mitter does not rotate.
:
material.
Flow meter operates, but Transmitter drive Straighten shaft and
output is erratic. magnet drags on check end clearance.
meter body.
220-000-350 © 2004 Max Machinery, Inc. Page 5
Dimensional Drawing
Discontinued
1000 PSI RATED VERSIONS
1.75
(45)
3.125
(79)
Thermocouple and RTD
1/8 diameter probe
hole with 1/16 NPTfitting
See
Below*
*Model 220-3XX 3.35 (85)
221-3XX 4.12 (105)
222-3XX 5.34 (136)
4.0
4.75
(102)
(121)
1/2” NPT
7/8-14 SAE (optional)
4.0
(102)
3/16 diameter probe
hole with 1/8 NPTfitting
2.75
(70)
3.5
(89)
Page 6 220-000-350 © 2004 Max Machinery, Inc.
Dimensional Drawings
Discontinued
3000 PSI RATED VERSIONS
REAM .375 & 1/4NPT
HEATING PORT
BOTH SIDES
0.190 X 2” DEEP
& 1/8 NPTTYP
ON OTHERSIDE
REAM .375 & 1/4NPT
HEATING PORT
BOTH SIDES
2 1/8
(54)
1 1/8
(29)
Standard NPT Connection
0.130 FOR THEMO COUPLING X 1-1/2
& 1/16 NPTTYPON OTHER SIDE
.255 X 2” DEEP
TYPON OTHER SIDE
2 1/8
(54)
5/16-18NC X 5/8 DEEP
(2 LOCATION EACH SIDE)
4.00sq.
(102)
1/2 NPT
7/8-14 SAE
(OPTIONAL)
0.3
(7)
221-600-000 Bottom
5” sq.
(127)
Model 220-6XX 3.85 (98)
221-6XX 4.62 (117)
222-6XX 5.84 (148)
220-000-350 © 2004 Max Machinery, Inc. Page 7
220 Series Gear Flowmeters — Linearity
Discontinued
S
ERIES
220 L
INEARITY
(This Flowmeter is generally used for 100 CPS or greater viscosities.)
Pulses/CC with 284-XXX Transmitter: 10.97
:
Typical Linearity (at various viscosities)
Maximum Error: -5 cc/min. or 0.75%
Typical Flowmeter Specifications
Displacement: 9.12 cc/rev
Maximum Pressure: 1500 PSI standard
3000 PSI High Pressure
Page 8 220-000-350 © 2004 Max Machinery, Inc.
220 Series Gear Flowmeters — Pressure Drop
Discontinued
S
ERIES
220 P
RESSURE
(This Flowmeter is generally used for 100 CPS or greater viscosities.)
Pulses/CC with 284-XXX Transmitter: 10.97
D
ROP
:
Delta P vs Flow Rate (at various viscosities)
Typical Flowmeter Specifications
Displacement: 9.12 cc/rev
Maximum Pressure: 1500 PSI standard
3000 PSI High Pressure
*When used with Lubricating Hydrocarbons.
220-000-350 © 2004 Max Machinery, Inc. Page 9
221 Series Gear Flowmeters — Linearity
Discontinued
S
ERIES
221 L
INEARITY
(This Flowmeter is generally used for 100 CPS or greater viscosities.)
Pulses/CC with 284-XXX Transmitter: 4.26
:
Typical Linearity (at various viscosities)
Maximum Error: -7.5 cc/min. or 0.75%
Typical Flowmeter Specifications
Displacement: 23.5 cc/rev
Maximum Pressure: 1500 PSI standard
3000 PSI High Pressure
Page 10 220-000-350 © 2004 Max Machinery, Inc.
221 Series Gear Flowmeters — Pressure Drop
Discontinued
S
ERIES
221 P
RESSURE
(This Flowmeter is generally used for 100 CPS or greater viscosities.)
Pulses/CC with 284-XXX Transmitter: 4.26
D
ROP
:
Delta P vs Flow Rate (at various viscosities)
Typical Flowmeter Specifications
Displacement: 23.5 cc/rev
Maximum Pressure: 1500 PSI standard
3000 PSI High Pressure
220-000-350 © 2004 Max Machinery, Inc. Page 11
222 Series Gear Flowmeters — Linearity
Discontinued
S
ERIES
222 L
INEARITY
(This Flowmeter is generally used for 100 CPS or greater viscosities.)
Pulses/CC with 284-XXX Transmitter: 2.11
:
Typical Linearity (at various viscosities)
Maximum Error: -10 cc/min. or 0.75%
Typical Flowmeter Specifications
Displacement: 47.4 cc/rev
Maximum Pressure: 1500 PSI standard
3000 PSI High Pressure
Page 12 220-000-350 © 2004 Max Machinery, Inc.
222 Series Gear Flowmeters — Pressure Drop
Discontinued
S
ERIES
222 P
RESSURE
(This Flowmeter is generally used for 100 CPS or greater viscosities.)
Pulses/CC with 284-XXX Transmitter: 2.11
D
ROP
:
Delta P vs Flow Rate (at various viscosities)
Typical Flowmeter Specifications
Displacement: 47.4 cc/rev
Maximum Pressure: 1500 PSI standard
3000 PSI High Pressure
220-000-350 © 2004 Max Machinery, Inc. Page 13
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