King Instrument 7310 Series User manual

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7310 Series Installation Instructions
FLOW METER LIMITED WARRANTY
Meters are warranted against defects in materials and workmanship to the original user for a period of thir-
teen (13) months from the date of factory shipment, provided the meter is installed, operated and maintained
in accordance with King Instrument Company’s instructions and recommendations.
This warranty does not apply if failure is caused or contributed to by any of the following: improper handling,
improper storage, abuse, unsuitable application of the product, lack of reasonable and necessary mainte-
nance, use exceeding suggested pressure and temperature maximums, improper packaging for return, or
repairs made or attempted to be made by anyone other than King Instrument Company, Inc.
KING INSTRUMENT COMPANY, INC. MAKES NO WARRANTY AS TO THE FITNESS OF ITS PRODUCTS FOR SPECIFIC
APPLICATIONS.
This warranty is valid for the original end-user only and does not apply to products that have been damaged
or modied. This warranty is non-transferrable and is limited to replacement or repair. The liability of King In-
strument Company arising out of its supply of the products, or their use, shall not in any case exceed the cost
of correcting defects in the products as set forth above.
THIS WARRANTY IS A LIMITED WARRANTY AND SHALL BE IN LIEU OF ANY OTHER WARRANTIES, EXPRESSED OR
IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OR MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. THERE ARE NO OTHER WARRANTIES WHICH EXIST BEYOND THE DESCRIPTION OR FACE
HEREOF.
IN NO EVENT SHALL KING INSTRUMENT COMPANY BE LIABLE FOR LOSS OF PROFITS, INDIRECT, CONSEQUEN-
TIAL OR INCIDENTAL DAMAGES.
Products should be returned, prepaid, to King Instrument Company, Inc. with proof of purchase. Call factory
for Return Merchandise Authorization (RMA) number and return instructions.
THIS IS IMPORTANT INFORMATION.
READ IT CAREFULLY BEFORE BEGINNING WORK.
1) Inspect meter for damage that may have occurred during shipping.
Report any damage to the container to the freight carrier
immediately.
2) Make sure your pressure, temperature, uid and other requirements
are compatible with the meter (including o-rings.)
3) Select a suitable location for installation to prevent excess stress on
the meter which may result from:
a) Misaligned pipe.
b) The weight of related plumbing.
c) “Water Hammer” which is most likely to occur when ow is
suddenly stopped as with quick closing solenoid operated valves.
(If necessary, a surge chamber should be installed. This will also
be useful in pressure start-up situations.)
d) Thermal expansion of liquid in a stagnated or valve
isolated system.
e) Instantaneous pressurization which will stress the meter and
could result in tube failure.
NOTE: In closed thermal transfer or cooling systems, install the meter
in the cool side of the line to minimize meter expansion and contrac-
tion and possible uid leaks at the threaded connections.
4) Handle the meter carefully during installation.
a) Use an appropriate amount of teon tape on external pipe
threads before making connections. Do not use paste or stick
type thread sealing products.
5) Install the meter vertically with the inlet port at the bottom.
6) Meters with stainless steel ttings will support several feet of pipe
as long as signicant vibration or stress resulting from misaligned
pipe are not factors.
ADDITIONALLY
7310 Series meters are designed for vertical installation only. (Inlet at
bottom, Outlet at top)
Max Non-Shock Pressure and Temperature
Fitting Temp Pressure
316LSS
PVC & PVDF
200° F
130° F
200 psig (41W-103W)
150 psig (41W-72W)
125 psig (90W-103W)
Ambient Temp. 33° F -125° F

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7310 Series Installation InstructionsInstallation Instructions
CAUTION
• O-rings should be replaced if meter is disassembled after it has been
in service.
• Serious property damage and great personal injury could occur as
the result of a meter misused or used in an unsuitable application.
CLEANING:
Carefully remove the owmeter from piping system. Remove the 4
end tting retainer screws. Carefully remove the end tting and end
tting retainer. Carefully remove the polysulfone tube from the top.
Be sure to not let the internals fall out. Use caution when removing
the polysulfone tube. Do not allow oat to fall out. Float damage may
result in inaccuracy. All necessary instrument components are now
fully accessible for cleaning with a bottle brush and appropriate mild
soap solution*. Before the meter is reassembled, inspect all parts for
damage. O-rings should be replaced during meter maintenance and
cleaning.
*Do not use cleaning agents that will damage oat, tube or o-rings.
To reassemble, carefully guide the polysulfone tube back into the case.
Reinstall the top end tting and end tting retainer. Tighten the 4
end tting retainer screws. Reinstall the instrument into the plumb-
ing system after removing the old teon tape (with a wire brush) and
replacing with fresh teon tape.
Meters should be cleaned with a mild soap solution. This will be an
eective cleaner of rust stains. Caution must be used so that materials
of construction are not damaged by cleaning solutions. Hard water
deposits can be removed with 5% acetic acid solution (vinegar).
REPAIR
7310 meters that require repair should be sent to the factory. Please
call for a Return Merchandise Authorization (RMA) number and return
instructions.
WARNING:
Pressure and temperature ratings are based on a study of the engi-
neering data for particular materials used in construction and on the
design of individual models. This information is supplemented by
destructive test results. Meters with stainless enclosures must never be
operated without shields securely in place. Meters exposed to dicult
environments such as those created by certain chemicals, excessive
vibration or other stress inducing factors could fail at or below the
suggested maximums. Never operate meters above pressure and
temperature maximums. It is strongly recommended that all meter
installations utilize an appropriate pressure relief valve and/or rupture
disc. The pressure settings and locations of these devices should be
such that meters cannot be over pressurized. Meter failure could
result in damage to equipment and serious personal injury. Always
use suitable safety gear, including OSHA approved eye protection
when working around meters in service. We are happy to pass along
chemical compatibility information that has been published by the
manufacturer’s of raw materials used in our products; however, this
information should not be construed as a recommendation made by
King Instrument Company, Inc. for a specic application.
FLOAT TYPES AND ORIENTATIONS
GV FLOAT SL FLOAT
END FITTING UNION NUT
END FITTING
END FITTING O-RING
FLOAT STOP/
FLOAT
Pressure and temperature ratings are based on a study of the engineering data
for particular materials used in construction and on the design of individual
models. This information is supplemented by destructive test results. Meters with
stainless enclosures must never be operated without shields securely in place.
Meters exposed to difficult environments such as those created by certain
chemicals, excessive vibration or other stress inducing factors could fail at or
below the suggested maximums. Never operate meters above pressure and
temperature maximums. It is strongly recommended that all meter installations
utilize an appropriate pressure relief valve and/or rupture disc. The pressure
settings and locations of these devices should be such that meters cannot be
over pressurized. Meter failure could result in damage to equipment and serious
personal injury. Always use suitable safety gear, including OSHA approved eye
protection when working around meters in service. We are happy to pass along
chemical compatibility information that has been published by the manufacturer's
of raw materials used in our products; however, this information should not be
construed as a recommendation made by King Instrument Company, Inc. for a
specific application.
*Do not use cleaning agents that will damage float, tube or o-rings.
Meters should be cleaned with a mild soap solution. This will be an effective
cleaner of rust stains. Caution must be used so that materials of construction are
not damaged by cleaning solutions. Hard water deposits can be removed with 5%
acetic acid solution (vinegar).
7330 meters that require repair should be sent to the factory. Please call for a
Return Merchandise Authorization (RMA) number and return instructions.
-O-rings should be replaced if meter is disassembled after it has been in service.
-Serious property damage and great personal injury could occur as the result of a
meter misused or used in an unsuitable application.
1) Inspect meter for damage that may have occurred during shipping.
Report any damage to the container to the freight carrier immediately.
This is important information. Read it carefully
before beginning work.
2) Make sure your pressure, temperature, fluid and other
requirements are compatible with the meter including o-rings.
3) Select a suitable location for installation to prevent excess stress
on the meter which may result from:
a) Misaligned pipe.
b) The weight of related plumbing.
c) "Water Hammer" which is most likely to occur when flow is
suddenly stopped as with quick closing solenoid operated valves.
(If necessary, a surge chamber should be installed. This will also be
useful in pressure start-up situations.)
d) Thermal expansion of liquid in a stagnated or valve isolated
system.
e) Instantaneous pressurization which will stress the meter and
could result in tube failure.
NOTE: In closed thermal transfer or cooling systems, install the meter
in the cool side of the line to minimize meter expansion and
contraction and possible fluid leaks at the threaded connections.
4) Handle the meter carefully during installation.
a) Use an appropriate amount of teflon tape on external pipe
threads before making connections. Do not use paste or stick type
thread sealing products.
5) Install the meter vertically with the inlet port at the bottom.
Maximum Non-Shock
Pressure and
Temperature O-Ring Temperature
Viton and Kalrez are registered trademarks of DuPont Dow
Elastomers.
Meters are not specifically recommended for service other than
water or air. The user must determine meter suitability for use
with other fluids.
ADDITIONALLY:
-7330 Series meters are designed for vertical installation only. (Inlet at
bottom, Outlet at top)
SCALE PLATE SCREW
SCALE PLATE
END FITTING UNION NUT
END FITTING
END FITTING O-RING
FLOAT
SCALE PLATE SCREW
SCALE PLATE
-7330 meters are not oxygen cleaned. Use with incompatible fluids may cause
o-rings to swell and break.
6) Meters with plastic fittings must be installed so that fittings are not
made to support any part of the associated plumbing. In addition,
meter frame should be fastened to bulkhead, panel or column.
7) Meters used in gas service should have suitable valves plumbed in
at the inlet and outlet of the meter. These valves should be no more
than 1-1/2 pipe diameters from the meter ports. The valve at the
outlet should be used to create back pressure as required to prevent
float bounce. It should be set initially and then left alone. The inlet
valve should be used for throttling purposes. Depending on the
installation, valves may not be essential, but they are most useful in
many installations. Remember: To get a correct reading of flow in gas
service, it is necessary to know the pressure right at the outlet of the
meter (before the valve).
8) Pressure and temperature maximums must never be exceeded.
Carefully remove the flowmeter from piping system. Loosen and remove the
outlet union nut and remove the outlet end fitting. Withdraw the float (and guide
rod assembly where applicable) from the top. All necessary instrument
components are now fully accessible for cleaning with an appropriate mild soap
solution*. Before the meter is reassembled, inspect all parts for damage. O-rings
should be replaced during meter maintenance and cleaning.
To reassemble, carefully guide the float (and guide rod assembly where
applicable) back into the tube. Reinstall the outlet end fitting and outlet union nut
and tighten the union nut. Reinstall the instrument into the plumbing system after
removing the old teflon tape (with a wire brush) and replacing with fresh teflon
tape.
EPR 225 °F
Buna-N
Viton
Kalrez
275 °F
350 °F
400 °F
PVC
PVDF
150 psig (41W-72W)
150 psig (41W-72W)
Ambient
temperature
33° F - 125° F
O-Ring
Material Maximum Temperature
130°F
200°F
130°F
200°F
125 psig (90W-103W)
125 psig (90W-103W)
Temperature Pressure
GV FLOAT
Highest immunity
to viscous fluids
with medium
meter capacity.
SL FLOAT
Maximum flow
meter capacity
with limited
viscosity immunity
POLYSULFONE METER TUBE
INLET FLOAT STOP
POLYSULFONE
FLOAT STOP/
GUIDE ROD ASSEMBLY
METER TUBE
EXTENSION ASSEMBLY

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7310 Series Installation InstructionsInstallation Instructions
7310 SERIES ASSEMBLY
POLE GUIDED TUBE
PARTS LIST:
1. End Fitting Retainer Screw
2. End Fitting Retainer
3. End Fitting
4. End Fitting O-Ring
5. Float Stop / Guide Rod Assembly
6. Float
7. Polysulfone Meter Tube
8. Scale Plate Screw
9. Scale Plate
10. Inlet Float Stop
11. Case
12. Shield (Clear)
13. Shield (White)
14. Shield Cover
15. Shield Cover Screw
END FITTING RETAINER SCREW
END FITTING RETAINER
END FITTING
END FITTING O-RING
FLOAT STOP / EXTENSION ASSEMBLY
FLOAT
POLYSULFONE METER TUBE
SCALE PLATE SCREW
SCALE PLATE
CASE
SHIELD (CLEAR)
SHIELD (WHITE)
SHIELD COVER
SHIELD COVER SCREW
4X
2X
4X
4X
4X
END FITTING RETAINER SCREW
END FITTING RETAINER
END FITTING
END FITTING O-RING
FLOAT STOP / GUIDE ROD ASSEMBLY
FLOAT
POLYSULFONE METER TUBE
SCALE PLATE SCREW
SCALE PLATE
CASE
SHIELD (CLEAR)
SHIELD (WHITE)
SHIELD COVER
SHIELD COVER SCREW
INLET FLOAT STOP
4X4X
2X
4X4X
7310 SERIES ASSEMBLY
RIB GUIDED TUBE
PARTS LIST:
1. End Fitting Retainer Screw
2. End Fitting Retainer
3. End Fitting
4. End Fitting O-Ring
5. Float Stop / Extension Assembly
6. Float
7. Polysulfone Meter Tube
8. Scale Plate Screw
9. Scale Plate
10. Case
11. Shield (Clear)
12. Shield (White)
13. Shield Cover
14. Shield Cover Screw
END FITTING RETAINER SCREW
END FITTING RETAINER
END FITTING
END FITTING O-RING
FLOAT STOP / EXTENSION ASSEMBLY
FLOAT
POLYSULFONE METER TUBE
SCALE PLATE SCREW
SCALE PLATE
CASE
SHIELD (CLEAR)
SHIELD (WHITE)
SHIELD COVER
SHIELD COVER SCREW
4X
2X
4X
4X
4X
END FITTING RETAINER SCREW
END FITTING RETAINER
END FITTING
END FITTING O-RING
FLOAT STOP / GUIDE ROD ASSEMBLY
FLOAT
POLYSULFONE METER TUBE
SCALE PLATE SCREW
SCALE PLATE
CASE
SHIELD (CLEAR)
SHIELD (WHITE)
SHIELD COVER
SHIELD COVER SCREW
INLET FLOAT STOP
4X4X
2X
4X4X

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LATCHING REED SWITCH
All 7310 Series owmeters may be tted with one or two latching reed
switches.
The switch assembly is mounted on the meter tube. The switch can be
positioned to trip at any point on the scale.
The switch is a reed type and uses a biasing magnet to give it the
latching feature. The oat contains hermetically sealed magnet(s), so
when the oat comes in proximity to the switch it closes and remains
closed (latched) when the oat moves below the switch it resets itself.
Contact King Instrument Company for multiple switch options.
LATCHING REED SWITCH ELECTRICAL SPECIFICATIONS
TYPE: SPDT / Latching
MAXIMUM CONTACT VOLTAGE: 100V DC
MAXIMUM CONTACT CURRENT: 0.20a DC
MAXIMUM CONTACT POWER: 4 Watts DC
BREAKDOWN VOLTAGE: 200V DC
STANDARD PULL-IN RANGE: 15-40 Ampere turns
INITIAL CONTACT RESISTANCE: 0.150 Ohm
CONNECTIONS-INTRINSICALLY SAFE WIRING
SWITCH ISOLATOR 3 CONDUCTOR, 22Awg, 2’ Long
1) White - N.O. switch output 1
2) Red - Common
3) Black - N.C. switch output 2
SWITCH ISOLATOR OPTION:
Latching reed switches can be used as stand alone devices, or may be
connected to a switch isolator for intrinsically safe applications. The
purpose of the switch isolator is to supply electrical signals between
safe and hazardous areas in either direction while limiting the amount
of energy that can be transferred even under fault conditions. Switch
isolators are available with 220VAC, 110VAC or 24VDC supply voltage
requirements, contain single pole double throw (SPDT) relays, and are
DIN rail mountable. See switch isolator specications for electrical con-
nections and further details.
7310 Series Installation Instructions
7310 SERIES WITH ALARM
PARTS LIST:
1. End Fitting Retainer Screw
2. End Fitting Retainer
3. End Fitting
4. Magnetic Float
5. Polysulfone Meter
Tube Assembly
6. Case
7. Shield (Clear)
8. Shield (White)
9. Shield Cover
10. Shield Cover Screw
11. Alarm Switch
12. Alarm Switch Housing
13. Alarm Set Screw O-Ring
14. Alarm Set Screw
15. Alarm Switch Housing Screw
16. Electrical Strain Connector
17. Junction Box O-ring
18. Junction Box With Cover
19. Junction Box
Mounting Screw
ALARM SWITCH
ALARM SWITCH HOUSING
ALARM SET SCREW
ALARM SET SCREW O-RING
ALARM SWITCH HOUSING SCREW
JUNCTION BOX O-RING
ELECTRICAL STRAIN CONNECTOR
JUNCTION BOX WITH COVER
JUNCTION BOX MOUNTING SCREW
1) Inspect meter for damage that may have occurred during shipping. Report any
damage to the container to the freight carrier immediately.
This is important information. Read it carefully before
beginning work.
2) Make sure your pressure, temperature, fluid and other requirements are
compatible with the meter including o-rings.
3) Select a suitable location for installation to prevent excess stress on the meter
which may result from:
a) Misaligned pipe.
b) The weight of related plumbing.
c) "Water Hammer" which is most likely to occur when flow is suddenly stopped
as with quick closing solenoid operated valves. (If necessary, a surge chamber
should be installed. This will also be useful in pressure start-up situations.)
d) Thermal expansion of liquid in a stagnated or valve isolated system.
e) Instantaneous pressurization which will stress the meter and could result in
tube failure.
NOTE: In closed thermal transfer or cooling systems, install the meter in the cool
side of the line to minimize meter expansion and contraction and possible fluid
leaks at the threaded connections.
4) Handle the meter carefully during installation.
a) Use an appropriate amount of teflon tape on external pipe threads before
making connections. Do not use paste or stick type thread sealing products.
5) Install the meter vertically with the inlet port at the bottom.
6) Meters with stainless steel fittings will support several feet of pipe as long as
significant vibration or stress resulting from misaligned pipe are not factors.
Maximum Non-Shock
Pressure and Temperature O-Ring Temperature
Viton and Kalrez are registered trademarks of DuPont Dow Elastomers.
ADDITIONALLY:
-7310 Series meters are designed for vertical installation only. (Inlet at bottom,
Outlet at top)
Temperature Pressure
Ambient temperature 33° F - 125° F
EPR 225 °F
Buna-N
Viton
Kalrez
275 °F
350 °F
400 °F
150 psig
(41W-72W)
125 psig
(90W-103W)
200 psig
(41W-103W)
130°F
(PVC)
200°F
PVC &
PVDF
316LSS
Maximum
Temperature
O-Ring
Material
END FITTING RETAINER SCREW
END FITTING RETAINER
END FITTING
MAGNETIC FLOAT
POLYSULFONE METER TUBE ASSEMBLY
CASE
SHIELD (CLEAR)
SHIELD (WHITE)
SHIELD COVER
SHIELD COVER SCREW
4X
4X4X
2X
4X
200°F
(PVDF)