Dwyer Instruments SERIES F6, SERIES F7 Catalog Page

SERIES F6 & F7 | W.E. ANDERSON™ BY DWYER

LEVEL SWITCHES - VERTICAL

LEVEL

Low Cost, Reliable and Compact, Hermetically Sealed Contacts

F7-SB F7-ST713

The Series F6 & F7 Vertical Level Switches are designed to be mounted at the maximum or minimum level point to provide level indication and control. Models are

shipped with normally open switch contacts which close as the oat rises toward the

mounting threads.

FEATURES/BENEFITS

• Combine low cost and reliability with fast, simple installation

• Hermetically sealed reed switches are actuated by magnets permanently bonded

inside the oat and can be easily adapted to open or close a circuit on rising or falling

levels

• Easily reverse switch action by removing the oat, rotating it end-for-end and

replacing it on the stem

• Vertical models mount internally, oriented within 30° of vertical, or select optional

ttings for external mounting

• Switch ratings are suitable for many solid state control systems and monitors or alarms

• Simple relay interfaces can be used for higher current applications

APPLICATIONS

• Water level monitoring

• Oil level control

• Chemical level indication

• Sumps

• Stand pipes

• Tank level control

Float

• High viscosity liquids

Level Switches,

MODEL CHART

Model Applications F7-SB*

F7-SS2*

F6-SS

F7-MPP**

F7-MPP-NO**

F7-PP*

F7-BT*

F7-C11

F7-PVC

F7-T1

F7-ST713

*UL listed **F7-MPP is normally closed/F7-MPP-NO is normally open ***PBT-Polybutylene terephthalate

General purpose

High temp/pressure, corrosives Corrosives

Broad chemical compatibility Broad chemical compatibility Broad chemical compatibility Oils & fuels

General purpose

Chemical & plating

Viscous, sticky or corrosive liquids Oils, water & chemicals

Material Float/Stem

Buna-N & epoxy/ 316 SS 316 SS (CYC)/ 316 SS 316 SS/316 SS

Polypropylene/ polypropylene Polypropylene/ polypropylene Polypropylene & epoxy/polypropylene Buna-N & epoxy/ PBT*** Buna-N/brass

CPVC/CPVC

PTFE/TFE

316 SS/316 SS

Temperature Limits

220°F (105°C)

300°F (149°C)

257°F (125°C)

180°F (82°C)

176°F (80°C)

220°F (105°C)

180°F (82°C)

300°F (149°C)

Pressure Limits

150 psig (10 bar)

450 psig (31 bar)

218 psig (15 bar)

100 psig (6.89 bar)

150 psig (10 bar)

15 psig (1 bar)

30 psig (2 bar)

750 psig (52 bar)

ACCESSORIES - FOR EXTERNAL MOUNTING OF VERTICAL MODELS Model Description A-347

A-347-SS A-348

DIMENSIONS - IN (MM)

Model F7-SB

F7-SS2

1/8 NPT

Min.

Electrical

S.G.

Rating Wire Leads

0.60

25 VA: 1 A @ 220 VAC

0.75

25 VA: 1 A @ 200 VAC

0.65

20 VA: 0.08 A @ 240 VAC

0.90

10 VA: 0.1 A @ 100 VAC

0.90

50 VA: 0.2 A @ 240 VAC

0.60

30 VA: 0.14 A @ 220 VAC

0.45

30 VA: 0.14 A @ 220 VAC

0.45

20 VA: 0.08 A @ 240 VAC

0.85

20 VA: 0.08 A @ 240 VAC

0.80

20 VA: 0.08 A @ 240 VAC

0.80

20 VA: 0.08 A @ 240 VAC

F6-SS F7-MPP F7-PP F7-BT F7-C11 F7-PVC F7-T1 F7-ST713 F7-ST714

jDistance between hex and liquid (S.G. = 1.0) level at

actuation point will vary with specic gravity changes.

1/8˝ x 1-1/4˝ NPT carbon steel adapter 1/8˝ x 1-1/4˝ NPT 316 SS adapter 1/8˝ x 1-1/2˝ NPT carbon steel adapter

(A) Stem Length

2.75 (70)

2.06 (52)

2.17 (55)

1.63 (41)

2.18 (55)

2.06 (52)

3.44 (87)

3.47 (88)

3.38 (86)

22 AWG 18˝ (45 cm)

20 AWG 11.8˝ (30 cm)

22 AWG 24˝ (61 cm)

(B) Float Diameter

1.38 (35)

1.0 (25)

1.11 (28)

0.63 (16)

1.18 (30)

1.0 (25)

1.5 (38)

2.13 (54)

2.06 (52)

1.13 (29)

1.0 (25)

1.11 (28)

0.63 (16)

1.0 (25)

1.81 (46)

1.94 (49)

2.06 (52)

Mtg NPT (M)

1/8˝

1/4˝

(D) Actuation from Hexj

1.2 (31)

0.73 (19) –

0.47 (12)

0.69 (18)

0.56 (14)

0.75 (19)

0.92 (22)

1.09 (28)

Weight oz (g)

2 (58)

1.2 (34)

1.59 (45)

0.8 (23)

0.7 (20)

1.5 (43)

5 (140)

6 (170)

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