King Instrument 7710 Series, 724-726, 715-722, 706-714, 728-734 Installation Instructions Manual

7710 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 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, CONSEQUEN­TIAL 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) Remove any shipping material placed in the inlet and outlet of the
meter. (This is done to prevent damage caused by movement of the
oat during shipping).

3) Make sure your pressure, temperature, uid and other requirements
are compatible with the meter and components (including o-rings).

4) 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
contraction and possible uid leaks at the threaded connections.

5) 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.

6) Install the meter vertically with the inlet port at the bottom.
No piping runs are required. Because the guide rod extends
from the top of the meter during operation, 4” of straight pipe
must be provided at the outlet of the meter.

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 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
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 installations. 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).

ADDITIONALLY:

• 7710 Series meters are designed for vertical installation only. (Inlet at
bottom, Outlet at top)

• Do not remove or adjust the screws on the back of the indicator
housing. These screws were positioned during factory calibration and
represent the zero adjustment. If the pointer is set on zero, proceed

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1

PARTS LIST:

SHIELD RETAINER

1

SHIELD GASKET

2

SHIELD

3

4

5

6

7710 SERIES ASSEMBLY

7

8

9

10

11

12

INDICATOR HOUSING/

POINTER NEEDLE SET SCREW

FLOAT

END FITTING O-RING

OUTLET END FITTING

ORIFICE HOUSING O-RING

ORIFICE HOUSING/

OUTLET FLOAT STOP

10

9

8

7

32

1

9

11

12

11

6

5

11

METER TUBE ASSEMBLY

ORIFICE ASSEMBLY

HOUSING ASSEMBLY

13

TAPER SLEEVE

14

INLET END FITTING

INLET FLOAT STOP
HOUSING ASSEMBLY

12

11

15

FLANGE

1

1

1

1

CONFIGURATIONS VARY BY FLOW RATE AND METER SIZE.

1

FNPT

1

11

14

www.kinginstrumentco.com

7700 SERIES FLOWMETER

King Instrument Company

Garden Grove, CA

Made in U.S.A.

www.kinginstrumentco.com

7700 SERIES FLOWMETER

King Instrument Company

Garden Grove, CA

Made in U.S.A.

B

A

D

E

Ø4.80

F

GC

4.87

15

SHIELD RETAINER O-RING

4

7710 Series

1) Remove front cover with gasket and shield from indicator housing.

2) Loosen set screw at the base of the pointer hub.

3) Reposition pointer to zero line. 4) Tighten set screw with a 1/16”
allen wrench by holding the pointer hub and gently tightening the set
screws.

5) Replace front cover with gasket and shield on indicator housing.

CAUTION: Zero is factory set when meter is calibrated. Do not
loosen screws that fasten indicator housing to meter body. If
indicator housing is moved, the meter will need to be calibrated.

Max Non-Shock Pressure and Temperature O-Ring

Temperture**

Temp Stainless Steel Flange Class O-Ring

Material

°F 150# psig 300# psig 600# psig EPR 225° F

200 225 600 1,200 Buna-N 275° F

300 200 540 1,100 Viton® 350° F

400 180 515 1,000 Kalrez® 400° F

**CAUTION: Meters with NPT (threaded) connections can be used
in service up to 1,500 psi and 400° F, but always make certain that
materials of construction (including O-Ring material) are compatible
with the uid to be metered at the desired temperature and pres­sure.

Viton® and Kalrez® are registered trademarks of
DuPont Dow Elastomers.

Note: The maximum ambient temperature for the indicator housing is 400°F

CAUTION

Max

Temp

Installation Instructions

of construction are not damaged by cleaning solutions. Hard water
deposits can be removed with 5% acetic acid solution (vinegar).

REPAIR

7710 meters that require repair should be sent to the factory. Please
call for aReturn Merchandise Authorization (RMA) number and return
instructions.

WARNING:

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 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.

OVERALL DIMENSIONS:

• O-rings should be replaced if meter is disassembled after it has been
in service.

• Do not loosen nuts that fasten indicator housing to metering tube.
If the relationship of meter tube and indicator housing are changed,
meter must be calibrated.

• 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
threaded outlet end tting and withdraw the oat from the top.
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, carefully guide the magnetic oat back into the tube.
Reinstall and tighten outlet end tting. Reinstall the instrument into
the plumbing system after removing the old teon tape (with a wire
brush) and replacing with fresh teon tape.

*Do not use cleaning agents that will damage oat, tube or o-rings.
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

Dim. 706-714 715-722 724-726 728-734 736-738 740-744

A 1.30 1.88 2.34 3.46 4.46 5.49

B 11.000 13.240 13.864 13.875 - -

C* 1/2” 1” 1-1/2” 2” 3” 4”

D 4.32 4.86 5.24 6.35 7.26 8.24

E 3.92 4.50 4.96 6.08 7.08 8.11

F** 13.125/

13.625

G** 3.50/

3.75

16.750/

17.500

4.25/

4.88

* FNPT/Flange Connection **150#/300#

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18.625/

19.250

5.00/

6.12

17.156/

17.786

6.00/

6.50

17.867/

18.867

7.50/

8.25

18.562/

19.696

9.00/

10.00

2

4

5

6

7

8

12

INDICATOR HOUSING/

POINTER NEEDLE SET SCREW

FLOAT

ORIFICE HOUSING/

OUTLET FLOAT STOP

METER TUBE ASSEMBLY

ORIFICE ASSEMBLY

HOUSING ASSEMBLY

13

TAPER SLEEVE

14

INLET END FITTING

INLET FLOAT STOP
HOUSING ASSEMBLY

1

1

1

CONFIGURATIONS VARY BY FLOW RATE AND METER SIZE.

1

1

15

SHIELD RETAINER O-RING

7710 Series

Installation Instructions

7710 SERIES ASSEMBLY
PARTS LIST:

1. Shield Retainer

2. Shield Gasket

3. Shield

4. Shield Retainer O-Ring

5. Indicator Housing/

Meter Tube Assembly

6. Pointer Needle Set Screw

7. Float

8. Outlet Float Stop Housing

Assembly

9. End Fitting O-Ring

10. Outlet End Fitting

11. Orice Housing O-Ring*

12. Orice Housing/

Orice Assembly

13. Inlet Float Stop

Housing Assembly

14. Taper Sleeve

15. Inlet End Fitting

1

Congurations vary by ow

rate and meter size.

1

1

FLANGE

1

1

4

15

FNPT

32

10

9

8

7

5

6

1

11

12

11

11

11

9

12

11

14

13

FLANGE FNPT

15

10

11

11

9

13

11

9

[phone] • www.kinginstrumentco.comWhen it comes to ow...we’re instrumental.

3

7710 SERIES 4-20 mA TRANSMITTER

To convert the measured flow into a 4-20 mAdc signal, an angle of
rotation transmitter is mounted to the indicator. This device is factory

calibrated to ensure accuracy and should only be adjusted by King
Instrument Company.

4-20 mA TRANSMITTER SPECIFICATIONS:

POWER SUPPLY:
MAXIMUM CURRENT CONSUMPTION:
TEMPERATURE LIMITS:

OUTPUT:

12-33V DC

40 mA

-13°F to 158°F

4 to 20 mAdc

ACCURACY: <=0.5%

LINEARITY:

+/- 0.4%

INFLUENCE FROM BEARING: +/- 0.1%

ELECTRICAL CONNECTIONS:

S1

SPANZERO

-

+

OUT

V

TRANSMITTER HOUSING

TRANSMITTER SHAFT

TRANSMITTER

JUMPER WIRE

RED WIRE (+)

BLACK WIRE (-)

R

ext: EXTERNAL RESISTANCE =

POWER SUPPLY (V) -12V

OUTPUT SIGNAL (mA)

7710 SERIES INDUCTIVE SLOT SENSOR

All 7710 Series flowmeters may be fitted with one or two inductive slot
sensors. Inductive slot sensors are 2-wire, DC, low current devices and are
designed to be used with a remote barrier / switch isolator capable of

Inductive

5-25V DC (Switch Isolator)
NAMUR
<= 1mA-Float Present

>= 3mA (15mA Max.)-Float Absent

2kHZ

IP67

POS=BROWN / NEG=BLUE

TERMINALS: #1=POS / #2=NEG

General Purpose

UL:

CSA:SENSOR APPROVALS:

TEMPERATURE INFLUENCE (AMBIENT): +/- 0.03% per degree C

POWER SUPPLY INFLUENCE: +/- 0.1%

LOAD RESISTANCE INFLUENCE: +/- 0.03% at R max.

ZERO POINT MARK

ZERO POINT MARK

(2 WIRE ONLY)

TRANSMITTER - REAR VIEW 2-WIRE CONNECTION

ZERO: POTENTIOMETER P1 FOR

ZERO POINT

POTENTIOMETER P2 FOR
MEASURING RANGE AND

VALUE

SPAN:

SWITCH FOR REVERSING

S1:

H: DC POWER SUPPLY

(-25°C to 70°C)

DUAL ALARM WIRING DIAGRAM

RED-2

BLACK-2

BLACK-3

(GROUND)

RED-1

BLACK-1

BROWN
BLUE

BLACK-3

BROWN
BLUE

RED-2
BLACK-2

ALARM
SENSOR

ALARM
SENSOR

(HIGH)

(LOW)

(GROUND)

BLACK-1

RED-1

FLOWMETER LIMITED WARRANTY

7710 SERIES 4-20 mA TRANSMITTER

To convert the measured flow into a 4-20 mAdc signal, an angle of

rotation transmitter is mounted to the indicator. This device is factory

calibrated to ensure accuracy and should only be adjusted by King
Instrument Company.

4-20 mA TRANSMITTER SPECIFICATIONS:

POWER SUPPLY:
MAXIMUM CURRENT CONSUMPTION:
TEMPERATURE LIMITS:

OUTPUT:

12-33V DC

40 mA

-13°F to 158°F

4 to 20 mAdc

ACCURACY: <=0.5%

LINEARITY:

+/- 0.4%

INFLUENCE FROM BEARING: +/- 0.1%

ELECTRICAL CONNECTIONS:

S1

SPANZERO

-

+

OUT

V

TRANSMITTER HOUSING

TRANSMITTER SHAFT

TRANSMITTER

JUMPER WIRE

RED WIRE (+)

BLACK WIRE (-)

V-V+OUT

ext

R

R

ext: EXTERNAL RESISTANCE =

POWER SUPPLY (V) -12V

OUTPUT SIGNAL (mA)

H

Inductive

5-25V DC (Switch Isolator)
NAMUR
<= 1mA-Float Present

>= 3mA (15mA Max.)-Float Absent
2kHZ

IP67

POS=BROWN / NEG=BLUE

TERMINALS: #1=POS / #2=NEG

General Purpose

TEMPERATURE INFLUENCE (AMBIENT): +/- 0.03% per degree C

POWER SUPPLY INFLUENCE: +/- 0.1%

LOAD RESISTANCE INFLUENCE: +/- 0.03% at R max.

ZERO POINT MARK

ZERO POINT MARK

(2 WIRE ONLY)

TRANSMITTER - REAR VIEW 2-WIRE CONNECTION

ZERO: POTENTIOMETER P1 FOR

ZERO POINT

POTENTIOMETER P2 FOR
MEASURING RANGE AND

VALUE

SPAN:

SWITCH FOR REVERSING

S1:

H: DC POWER SUPPLY

(-25°C to 70°C)

BLACK-3

TEMPERATURE LIMITS:

OUTPUT:

-13°F to 158°F

4 to 20 mAdc

ACCURACY: <=0.5%

LINEARITY:

+/- 0.4%

INFLUENCE FROM BEARING: +/- 0.1%

ELECTRICAL CONNECTIONS:

S1

SPANZERO

-

+

OUT

V

TRANSMITTER HOUSING

TRANSMITTER SHAFT

TRANSMITTER

JUMPER WIRE

RED WIRE (+)

BLACK WIRE (-)

V-V+OUT

ext

R

R

ext: EXTERNAL RESISTANCE =

POWER SUPPLY (V) -12V

OUTPUT SIGNAL (mA)

H

Inductive

5-25V DC (Switch Isolator)
NAMUR
<= 1mA-Float Present

>= 3mA (15mA Max.)-Float Absent
2kHZ

IP67

POS=BROWN / NEG=BLUE

TERMINALS: #1=POS / #2=NEG

General Purpose

UL:
CSA:SENSOR APPROVALS:

TEMPERATURE INFLUENCE (AMBIENT): +/- 0.03% per degree C

POWER SUPPLY INFLUENCE: +/- 0.1%

LOAD RESISTANCE INFLUENCE: +/- 0.03% at R max.

ZERO POINT MARK

ZERO POINT MARK

(2 WIRE ONLY)

TRANSMITTER - REAR VIEW 2-WIRE CONNECTION

ZERO: POTENTIOMETER P1 FOR

ZERO POINT

POTENTIOMETER P2 FOR
MEASURING RANGE AND

VALUE

SPAN:

SWITCH FOR REVERSING
ROTATION (NOT

APPLICABLE)

S1:

H: DC POWER SUPPLY

(-25°C to 70°C)

(12V-33V)

RED-2

BLACK-2

BLACK-3

(GROUND)

RED-1

BLACK-1

BROWN
BLUE

BLACK-2
(GROUND)

ALARM

BLACK-1
RED-1

BROWN
BLUE

BLACK-3

BROWN
BLUE

RED-2
BLACK-2

ALARM

SENSOR

ALARM

SENSOR

(HIGH)

(LOW)

(GROUND)

BLACK-1

RED-1

1

2

3

6

5

4

7710 Series

7710 SERIES INDUCTIVE SLOT SENSOR

All 7710 Series owmeters may be tted with one or two inductive slot

sensors. Inductive slot sensors are 2-wire, DC, low current devices and
are designed to be used with a remote barrier / switch isolator capable
of powering the sensor and providing the desired switching option(s).

ELECTRICAL CONNECTIONS

Barrier / switch isolators are available with 220VAC, 110VAC or 24VDC
supply voltage requirements, contain single pole double throw (SPDT)
relays, and are DIN rail mountable. (Only 24VDC units are actually
powered by the rail.) See barrier / switch isolator specications for
electrical connections and further details.

INDUCTIVE SLOT SENSOR-ELECTRICAL
SPECIFICATIONS

TYPE: INDUCTIVE

SUPPLY VOLTAGE: 5-25V DC (Switch Isolator)

OUTPUT: NAMUR

OUTPUT LOAD CURRENT: <= 1mA-Float Present

>= 3mA (15mA Max.)-Float Absent

SWITCHING FREQUENCY: 2kHZ

(GROUND)

HOUSING RATING: IP67

WIRING: 2 Conductor, NAMUR
POS=BROWN / NEG=BLUE
TERMINALS: #1=POS / #2=NEG
PEPPERL+FUCHS UL: General Purpose

SENSOR APPROVALS CSA: Intrinsically Safe

7710 SERIES ASSEMBLY INDUCTIVE
SLOT SENSOR

SETTING ALARM TRIGGER POINTS

1) Unscrew the SHIELD RETAINER to remove the SHIELD and GASKET.

2) Remove the SHIELD and GASKET.

3) Carefully loosen the ALARM NUT. (Loosen just enough to rotate the
ALARM SENSOR BRACKET).

4) Carefully rotate the ALARM SENSOR BRACKET to the desired alarm
set point. If the meter has DUAL ALARMS, set the LOW ALARM set
point and then the HIGH ALARM set point.

5) Tighten the ALARM NUT.

6) Replace the SHIELD and GASKET, secure with the SHIELD RETAINER.

Installation Instructions

BLACK-2

(GROUND)

RED-1

BLACK-1

SINGLE ALARM WIRING DIAGRAM

BLACK-3

RED-2

BLACK-2

RED-1

BLACK-1

BLACK-1

DUAL ALARM WIRING DIAGRAM

BLACK-2

(GROUND)

BLACK-1
RED-1

ALARM

BROWN
BLUE

RED-1

(GROUND)

BROWN
BLUE
ALARM

SENSOR
(HIGH)

RED-2
BLACK-2

ALARM
SENSOR
(LOW)

BROWN
BLUE

7710 SERIES ASSEMBLY INDUCTIVE SLOT SENSOR
PARTS LIST:

1. Shield Retainer

2. Shield With Gasket

3. Indicator Housing/ Meter Tube Assembly

4. Pointer Hub and Pointer Needle

5. Alarm Nut

6. Alarm Sensor Bracket

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4

7710 Series

7710 SERIES 4-20 mA TRANSMITTER

To convert the measured flow into a 4-20 mAdc signal, an angle of

rotation transmitter is mounted to the indicator. This device is factory

calibrated to ensure accuracy and should only be adjusted by King

Instrument Company.

4-20 mA TRANSMITTER SPECIFICATIONS:

POWER SUPPLY:
MAXIMUM CURRENT CONSUMPTION:

TEMPERATURE LIMITS:

OUTPUT:

12-33V DC

40 mA

-13°F to 158°F

4 to 20 mAdc

ACCURACY: <=0.5%

LINEARITY:

+/- 0.4%

INFLUENCE FROM BEARING: +/- 0.1%

ELECTRICAL CONNECTIONS:

V-V+OUT

ext

R

H

TEMPERATURE INFLUENCE (AMBIENT): +/- 0.03% per degree C

POWER SUPPLY INFLUENCE: +/- 0.1%

LOAD RESISTANCE INFLUENCE: +/- 0.03% at R max.

(-25°C to 70°C)

7710 SERIES

INSTALLATION

INSTRUCTIONS

Installation Instructions

7710 SERIES 4-20 mA TRANSMITER

To convert the measured ow into a 4-20 mAdc signal, an angle of
rotation transmitter is mounted to the indicator. This device is fac­tory calibrated to ensure accuracy and should only be adjusted by
King Instrument Company.

4-20 MA TRANSMITTER SPECIFICATIONS:

POWER SUPPLY: 12-33V DC

MAXIMUM CURRENT CONSUMPTION: 40 mA

TEMPERATURE LIMITS: -13°F to 158°F (-25°C to 70° C)

OUTPUT: 4 to 20 mAdc

ACCURACY: <=0.5%

LINEARITY: +/- 0.4%

INFLUENCE FROM BEARING: +/- 0.1%

TEMPERATURE INFLUENCE (AMBIENT): +/- 0.03% per degree C

POWER SUPPLY INFLUENCE: +/- 0.1%

LOAD RESISTANCE INFLUENCE: +/- 0.03% at R max.

ELECTRICAL CONNECTIONS:

ZERO

OUT

SPAN

S1

-

V

+

TRANSMITTER

TRANSMITTER HOUSING

ZERO POINT MARK

TRANSMITTER SHAFT

ZERO POINT MARK

BLACK WIRE (-)

RED WIRE (+)

JUMPER WIRE

(2 WIRE ONLY)

TRANSMITTER - REAR VIEW

ZERO: POTENTIOMETER P1 FOR ZERO POINT

SPAN: POTENTIOMETER P2 FOR MEASURING RANGE AND VALUE

S 1: SWITCH FOR REVERSING ROTATION (NOT APPLICABLE)

V-V+OUT

2-WIRE CONNECTION

R

ext: EXTERNAL RESISTANCE =

R

ext

H

POWER SUPPLY (V) -12V
OUTPUT SIGNAL (mA)

H: DC POWER SUPPLY
(12V-33V)

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5