King instrument 7910 series User manual

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7910 Series Installation Instructions

FLOW METER LIMITED WARRANTY

Meters are warranted against defects in materials and workmanship to the original user for a period of

thirteen (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 maintenance, 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 Instrument 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 MERCHANT-

ABILITY 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, CONSE-

QUENTIAL 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 and components (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) Connections: Fittings are fully rotatable by loosening the tting

retainer screws during installation. Make sure tting retainer screws

are tightening after adjustment of tting.

7) 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.

8) Meters with plastic ttings must be installed so that ttings are not

made to support any part of the associated plumbing. In addition,

meter frame should be fastened to bulkhead, panel or column.

9) 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 out-

let should be used to create back pressure as required to prevent oat

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 instal-

lations. Remember: To get a correct reading of ow in gas service, it is

necessary to know the pressure right at the outlet of the meter (before

the valve).

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7910 Series Installation 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

shield cover screws from the back cover. Remove the back shield

cover and shield. Remove the end tting retainer screws from the

top end tting. Remove the top end tting and end tting retainer.

Carefully remove the glass meter tube from the top of the case. Pull-

ing glass tube at an extreme angle, or by excessive force will cause

tube to break. 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 install the meter back into the case from the

top. Reinstall the top end tting and end tting retainer and tighten

end tting retainer screws. Reinstall back shield and back shield

cover and tighten the shield cover screws. Reinstall owmeter into

piping system.

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 materi-

als of construction are not damaged by cleaning solutions. Hard wa-

ter deposIts can be removed with 5% acetic acid solution (vinegar).

REPAIR

7910 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 de-

structive 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, exces-

sive 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 rup-

ture 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.

Maximum Non-Shock Pressure and Temperature

Fitting Temperature Pressure

PVC 115°F 150 psig (31W-89W)

125 psig (94W-99W)

316LSS 200°F

300 psig (31W-46W)

250 psig (51W-613W)

150 psig (84W-89W)

125 psig (94W-99W)

Ambient Temp. 33° F -125° F

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7910 Series Installation Instructions

7910 SERIES ASSEMBLY – RIB GUIDED

PARTS LIST:

1. End Fitting Retainer Screw

2. End Fitting Retainer

3. End Fitting Plug

4. Float Stop

5. Float Stop Extension

6. End Fitting

7. O-Ring

8. Float Stop Retaining Screw

9. Glass Meter Tube Gasket

10. Float

11. Glass Meter Tube

12. Case

13. Case Cover Screw

14. Case Cover

15. Polycarbonate Shield (Clear)

16. Polycarbonate Shield (White)

17. Case Bracket Screw

18. Case Bracket

19. Scale Plate Bracket

20. Scale Plate Screw

21. Scale Plate

END FITTING RETAINER

GLASS METER TUBE

CASE

CASE COVER SCREW

CASE COVER

POLYCARBONATE SHIELD

END FITTING

O-RING

FLOAT STOP RETAINING

GLASS METER TUBE

FLOAT

CASE BRACKET

SCALE PLATE BRACKET

SCALE PLATE SCREW

SCALE PLATE

END FITTING RETAINER

CASE BRACKET SCREW

FLOAT STOP EXTENSION

END FITTING PLUG

FLOAT STOP

THIS PLUG USED FOR

HORIZONTAL CONNECTION

THIS PLUG USED FOR

VERTICAL CONNECTION

END FITTING RETAINER

GLASS METER TUBE

CASE

CASE COVER SCREW

CASE COVER

POLYCARBONATE SHIELD

END FITTING

O-RING

FLOAT STOP RETAINING

GLASS METER TUBE

FLOAT

CASE BRACKET

SCALE PLATE BRACKET

SCALE PLATE SCREW

SCALE PLATE

END FITTING RETAINER

CASE BRACKET SCREWEND FITTING PLUG

FLOAT STOP

GUIDE ROD ASSEMBLY

10X

THIS PLUG USED FOR

VERTICAL CONNECTION

THIS PLUG USED FOR

HORIZONTAL CONNECTION

THIS PLUG USED FOR

HORIZONTAL CONNECTION

THIS PLUG USED FOR

VERTICAL CONNECTION

10X

THIS PLUG USED FOR

VERTICAL CONNECTION

THIS PLUG USED FOR

HORIZONTAL CONNECTION

SCREW (CLEAR)

(WHITE)

SCREW

GASKET

SCREW (CLEAR)

(WHITE)

SCREW

GASKET

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7910 Series Installation Instructions

7910 SERIES ASSEMBLY – POLE GUIDED TUBE

PARTS LIST:

1. End Fitting Retainer Screw

2. End Fitting Retainer

3. End Fitting Plug

4. Float Stop

5. End Fitting

6. Float Stop Retaining Screw

7. O-Ring

8. Glass Meter Tube Gasket

9. Guide Rod Assembly

10. Float

11. Glass Meter Tube

12. Case

13. Case Cover Screw

14. Case Cover

15. Polycarbonate Shield (Clear)

16. Polycarbonate Shield (White)

17. Case Bracket Screw

18. Case Bracket

19. Scale Plate Bracket

20. Scale Plate Screw

21. Scale Plate

END FITTING RETAINER

GLASS METER TUBE

CASE

CASE COVER SCREW

CASE COVER

POLYCARBONATE SHIELD

END FITTING

O-RING

FLOAT STOP RETAINING

GLASS METER TUBE

FLOAT

CASE BRACKET

SCALE PLATE BRACKET

SCALE PLATE SCREW

SCALE PLATE

END FITTING RETAINER

CASE BRACKET SCREW

FLOAT STOP EXTENSION

END FITTING PLUG

FLOAT STOP

THIS PLUG USED FOR

HORIZONTAL CONNECTION

THIS PLUG USED FOR

VERTICAL CONNECTION

END FITTING RETAINER

GLASS METER TUBE

CASE

CASE COVER SCREW

CASE COVER

POLYCARBONATE SHIELD

END FITTING

O-RING

FLOAT STOP RETAINING

GLASS METER TUBE

FLOAT

CASE BRACKET

SCALE PLATE BRACKET

SCALE PLATE SCREW

SCALE PLATE

END FITTING RETAINER

CASE BRACKET SCREWEND FITTING PLUG

FLOAT STOP

GUIDE ROD ASSEMBLY

10X

THIS PLUG USED FOR

VERTICAL CONNECTION

THIS PLUG USED FOR

HORIZONTAL CONNECTION

THIS PLUG USED FOR

HORIZONTAL CONNECTION

THIS PLUG USED FOR

VERTICAL CONNECTION

10X

THIS PLUG USED FOR

VERTICAL CONNECTION

THIS PLUG USED FOR

HORIZONTAL CONNECTION

SCREW (CLEAR)

(WHITE)

SCREW

GASKET

SCREW (CLEAR)

(WHITE)

SCREW

GASKET

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7910 Series Installation Instructions

LATCHING REED SWITCH

All 7910 Series owmeters may be tted with one or two latching reed

switches.

The switch assembly is mounted on the guide rod. 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: 0.20 A 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 ISOLATER 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.

FLOAT TYPES AND ORIENTATIONS

GV FLOAT GS FLOAT LP FLOAT SL 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.

Carefully remove the flowmeter from piping system. Remove the 4 screws on each

side holding the side plates on. Remove the side plates. Carefully remove the glass

meter tube from the end fittings. Be sure to not let the internals fall out. Use caution

when removing the glass meter tube. Do not allow float 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.

To reassemble, install the glass meter tube back onto the end fittings. Reinstall the

side plates. Tighten the 4 screws on each side. Reinstall the instrument into the

plumbing system after removing the old teflon tape (with a wire brush) and

replacing with fresh teflon tape.

*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).

7460 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.

CAUTION:

CLEANING:

REPAIR:

WARNING:

FLOAT TYPES AND

ORIENTATIONS:

LP FLOAT

Maximum flow meter

capacity with limited

viscosity immunity

GV FLOAT (Rib Guided)

Highest immunity to

viscous fluids with

medium capacity.

SL FLOAT

Maximum flow meter

capacity with limited

viscosity immunity

GS FLOAT (Rib Guided)

Maximum flow meter

capacity with limited

viscosity immunity

SP FLOAT

Maximum flow meter

capacity with limited

viscosity immunity

GV FLOAT (Pole Guided)

Highest immunity to

viscous fluids with

medium capacity.

GS FLOAT (Pole Guided)