Dwyer Instruments V10SS, V10 User manual

Bulletin E-26

L

OWER

B

ODY

7/8 HEX

1

/2 MALE

N

PT

V

ANE

N

ORMALLY OPEN

P

OSITION

N

ORMALLY CLOSED

P

OSITION

2-3/8

[61.11]

2-7/8

[73.07]

1/4 [6.35]
TRAVEL TO
NORMALLY

CLOSED

POSITION

1

[

25.40]

4 [101.6]

2-7/8 [73.07]

18 AWG LEAD WIRES
19˝ [482.6] LONG
CABLE

Model V10 Flotect®Mini-Size Flow Switch

Specifications – Installation and Operating Instructions

INSTALLATION

. Carefully unpack switch and remove any packing material from lower housing.

1

rim the vane at the appropriate mark for the size of pipe being used. See

T

ctuation/deactuation chart. CAUTION: Mechanical shock or vibration can cause

a
permanent damage to the reed switch. Take care to avoid dropping the unit on hard
surfaces or impacting the switch assembly.

2. Apply pipe thread sealant tape or pipe thread sealant to the 1/2˝ male NPT
ounting threads and install switch in the system piping with the arrow on side

m

ointing in the direction of flow.

p

3. Connect wiring in accordance with local electrical codes.

4. Inductive, capacitive and lamp loads can all create conditions harmful to the reed

switch.

A) Inductive loads can be caused by electromagnetic relays, electromagnetic
solenoids and electromagnetic counters, all with inductive components as the
circuit load.

B) Capacitive loads can be caused by capacitors connected in series with or
parallel to the reed switch. In a closed circuit the cable length (150 ft. or more) to
the switch can introduce a capacitance.

C) Lamp loads can be caused by switching lamp filaments which have low cold
resistance.

In addition to these causes, exceeding any of the maximum electrical ratings can
lead to premature or immediate failure. This includes inrush and surge currents
greater than the maximum switching current. Use caution when evaluating system
loads and current. To accommodate these conditions, see diagrams on the reverse
which depict possible solutions.

5. After installation, set the switch action to NO

closed). Normally closed contacts open and normally open contacts close when
increasing flow actuates the reed switch. To change, loosen, but do not remove,
the two screws on the top cap. Slide the reed switch assembly to expose the switch
action selected. Tighten screws when adjustment is complete.

MAINTENANCE/REPAIR

Upon final installation of the Model V10, no routine maintenance is required. The
Model V10 is not field serviceable and should be returned if repair is needed. Field
repair should not be attempted and may void warranty.

WARRANTY/RETURN

Refer to “Terms and Conditions of Sales” in our catalog and on our website.
Contact customer service to receive a Return Goods Authorization number before
shipping the product back for repair. Be sure to include a brief description of the
problem plus any additional application notes.

W.E. ANDERSON DIV., DWYER INSTRUMENTS, INC.

(normally open) or NC (normally

P.O. BOX 358 • MICHIGAN CITY, INDIANA 46361 U.S.A.

Find Quality Products Online at: [e-mail]

www.GlobalTestSupply.com

SPECIFICATIONS
Service: Compatible gases or liquids.
Wetted Materials:

Vane: 301 SS;
Body: Brass or 303 SS;
Pin and spring: 301 SS, 302 SS and 316 SS;

agnet: Ceramic 8.

M

emperature Limit: 200°F (93°C).

T

ressure Limit: Brass body: 1000 psig (69 bar); 303 SS body: 2000 psig (138

P

bar).

Enclosure Rating: Weatherproof, meets NEMA 4X (IP66).
Switch Type: SPST hermetically sealed reed switch. Field adjustable for

normally open or normally closed.
Electrical Rating: 0.5 A @ 120 VAC; 1.5 A @ 24 VDC res.; 0.001 A @ 200 VDC
res.
Electrical Connections: 18 AWG, 19˝ (483 mm) long, PVC jacket. Rated 221°F
(105°C).

Process Connection: 1/2˝ male NPT standard. Contact factory for other options.
Mounting Orientation: Switch can be installed in any position but the

actuation/deactuation flow rates are based on horizontal pipe runs and are
nominal values.

Set Point Adjustment: Vane is trimmable.
Weight: 5.5 oz (0.16 kg).
Agency Approvals: CE, UL and CSA.
Switch Enclosure: Nylon.

Cold Water Flow Rates

Approximate actuation/deactuation

GPM upper, LPM lower

Pipe

1/2˝

3/4˝

1˝

1-1/4˝

1-1/2˝

2˝

Trim

L

J

H

E

C

Full

N.O.

2.6/2.3

9.8/8.7

3.1/2.7

11.7/10.2

4.8/4.5

18.2/17

6.2/5.6

23.5/21.2

8.2/7.7
31/29.1

9.5/9.1
36/34.4

N.C.

2.6/2.5

9.8/9.5

3.1/2.8

11.7/10.6

4.8/4.4

18.2/16.7

6.1/5.6

23.1/21.2

8.2/7.7
31/29.1

9.5/9
36/34.1

Air Flow Rates

Approximate actuation/deactuation

SCFM upper, LPM lower

Pipe

1/2˝

3/4˝

1˝

1-1/4˝

1-1/2˝

2˝

Trim

L

J

H

E

C

Full

N.O.

10.3/8.8

291.7/250
13/11.6

368.3/328

19.2/17.6

543.3/498

24.8/22.2

701.7/628

33.4/31.2

946.7/883

50.2/48.4
1422/1370

N.C.

10.2/9.2
288/260

12.9/11.6
365/328

18.9/17.6
535/498

24.5/22.5
693/637
33/30.6
935/867

50.2/47.7
1422/1352

Phone: [phone] www.dwyer-inst.com
Fax: [phone] e-mail: [e-mail]

REED SWITCH PROTECTION CIRCUIT INFORMATION BULLETIN

D

IODE SUPPRESSION

D

IODE

INDUCTIVE

LOAD

P

IV DIODE > V

R

EED

S

WITCH

R

EED

S

WITCH

U

SED IN

A

C CIRCUITS

V

ARISTER

VARISTER PROTECTION

I

NDUCTIVE

L

OAD

R

C SUPPRESSION

R

C

INDUCTIVE PROTECTION FOR
CABLE LENGTH CAPACITANCE

LOAD

REED

SWITCH

Cable Length

over 50 meters

[162.5 ft.]

REED

SWITCH

RESISTOR PROTECTION

FOR CAPACITIVE LOAD

S

URGE LIMITER FOR

C

APACITANCE IN SERIES

REED

SWITCH

CURRENT LIMITING RESISTOR

IN SERIES

CURRENT LIMITING RESISTOR

IN PARALLEL

REED

SWITCH

REED

SWITCH

INDUCTIVE

L

OAD

REED

S

WITCH

S

WITCH

[uf]

1

0

C

R

10*I

(1+50/E)

S

WITCH

2

C

LOAD

S

WITCH

SWITCH

L

OAD

C

R

L =0.5~5 mH

P

+V

R

A

P

L

R

A

+V

R = 50~500 Ohms

R

B

P

L

L = 0.5~5 mH

P

+V

R

L

R

R

V-0.12 R

L

2

+V R

L

5R > R

L

R

EAD INFORMATION BELOW BEFORE INSTALLING YOUR NEW REED SWITCH CONTROL!

R

xceeding the current capacity of this Reed Switch control may cause FAULTY OPERATION!

E

ou Reed Switch Control. The circuits below outline possible solutions to preventing overloads due to inrush or surge currents exceeding maximum or when the switch current

y

nd product of the inductive back EMF exceed the switch’s power rating. Also the circuit for prevention of overload when switching filament lamps (low “cold” resistance) is

a

e aware of the inductive and capacitive or lamp loads you may be placing on

B

outlined below. Failure to follow these measures to protect Reed Switch Contacts may cause the contacts to weld together or result in premature wear.

Possible Circuit Solutions Indicated by Dashed Lines

nductive Loads

I

ossible causes –

P

An electromagnetic relay, electromagnetic solenoid,
electromagnetic counter with inductive component as
circuit load.

apacitive Loads

C

Possible causes –
A capacitor connected in series or parallel with Reed
Switch control. In a closed circuit, a cable length (usually
greater than 50m [162.5 ft.]) used to connect reed switch
may also introduce static capacitance.

Lamp Loads

Possible causes –
A tungsten filament lamp load.

Do not subject reed switch control to excessive shock and
vibration, including:

• Bending or placing force loads on reed

switch housing

• Over-torquing fittings on reed switch housing

• Placing pull-out force on load wires

©Copyright 2012 Dwyer Instruments, Inc.

W.E. ANDERSON DIV., DWYER INSTRUMENTS, INC.

P.O. BOX 358 • MICHIGAN CITY, INDIANA 46361 U.S.A.

Find Quality Products Online at: [e-mail]

Printed in U.S.A. 11/12

Phone: [phone] www.dwyer-inst.com
Fax: [phone] e-mail: [e-mail]

www.GlobalTestSupply.com

FR# 82-440783-00 Rev. 9