Level Switches Series F7
Low cost, reliable and compact. Hermetically sealed contacts.
Series F7 compact level switches combine low cost and reliability with fast, simple installation. Seven models assure you can choose just the right combination of features, capabilities and media compatibility for almost any application. Model F7 HSS is approved for use in hazardous locations. Hermetically sealed reed switches are actuated by magnets permanently bonded inside the float and can be easily adapted to open or close a circuit on rising or falling levels. Vertical mount models are shipped with normally open switch contacts which close as the float rises toward the mounting threads. Reverse switch action by removing the float, rotating it end-for-end and replacing it on the stem. Vertical models mount internally, oriented within 30° of vertical, or select optional fittings for external mounting. Contacts in horizontal models F7-HPS-1 (internal mount) and F7-HPS-2 (external mount), are normally open when the float is down and normally closed when the float is up. Horizontal model F7-HSS is in the normally open position when the indicating arrow points up, and normally closed when the arrow points down. Install model F7-HSS internally or externally. Switch ratings are suitable for many solid state control systems and monitors or alarms. Simple relay interfaces can be sued for higher current applications.
| Electrical Rating (Maximum): | F7-SB, -SS2AC: 25VA. 1.0A, 200V DC: 10W, 1.0A, 200V F7-PP, -BT, -HSSAC: 30W, 0.14A, 220V DC: 0.28A, 24V; 0.07A, 120V F7-HPS-1, -2AC/DC: 15VA, 220V, 1.0A maximum (F7-HSS is rated explosion-proof for Class I, Groups A, B, C, D; Class II, Groups E, F, G; Class III) |
|---|---|
| Mounting Connection: | 1/8" NPTM (all vertical mount), ½" NPTM F7-HPS-2, F7-HSS), M16x2 (F7-HPS-1) |
| Wire Leads: | 22 AWG x 18" (46 cm), vertical mount models; 22 AWG x 39" (1 m), models F7-HPS-1, -2, 22 AWG x 24" (61 cm) model F7-HSS |
| Magnet: | Alnico (F7-SB, -PP, -BT, -HPS), ceramic (F7-SS2, -HSS) |
| Weight: | F7-SB, 2 oz. (58 g); F7-SS2, 1.2 oz. (34 g); F5-PP, 0.8 oz. (23 g); F7-BT, 0.7 oz. (20 g)' F7-HPS-1, 1.5 oz. (43 g); F7-HPS-2, 2 oz. (57 g); F7-HSS, 3 oz. (94 g) |
| Model Number | (A) Float Length | (B) Float Diameter | (C) Float Height | (D) Actuation from Hex1 |
|---|---|---|---|---|
| F7-SB F7-SS2 F7-PP F7-BT |
2.75 (70) 2.06 (52) 2.18 (55) 2.18 (55) |
1.13 (29) 1.0 (25) 1.18 (30) 1.18 (30) |
1.35 (35) 1.0 (25) 1.0 (25) 1.0 (25) |
1.2 (31) .73 (19) .69 (118) .69 (18) |
| Model Number > |
Material Float/Stern > |
Max. Temp. > | Max. Press. > |
Min. S.G. > |
Approx. Deadband > |
|---|---|---|---|---|---|
| Vertical Mount > | |||||
| F7-SB F7-SS2 F7-PP F7-BT |
Buna-N & Epoxy/ 316SS 316SS (CYC)/ 316SS Polypropylene & Epoxy/Polypropylene Buna-N & Epoxy/ PBT* |
220°F 105°C 300°F 149°C 220°F 105°C 220°F 105°C |
150 PSIG 10 Bar 450 PSIG 31 Bar 100 PSIG 6.89 Bar 150 PSIG 10 Bar |
0.60 0.75 0.60 0.45 |
1/16" 2mm 1/16" 2mm 1/8" 4mm 1/8" 4mm |
| Horizontal Mount > | |||||
| F7-HPS -1, -2 F7-HSS |
Polysulfone/ Polysulfone 315SS/316SS |
185°F 85°C 392°F 200°C |
150 PSIG 10 Bar 300 PSIG 20.7 Bar |
0.85 0.60 |
3/16" 5mm 1/8" 4mm |
Optional Fittings - For external mounting of vertical models
A-347 1/8" x 1 ¼" NPT carbon steel adapter
A-347-SS 1/8" x 1 ¼" NPT 316 stainless steel adapter
A-348 1/8" x 1 ½" NPT carbon steel adapter
A-348-SS 1/8" x 1 ½" NPT 316 stainless steel adapter
- The F7-SB is an ideal general purpose switch.
- The F7-SS2 is designed for high temperature, high pressure or corrosives.
- The F7-PP is suggested for highly acidic conditions.
- The F7-BT is an economical choice for lubricating and hydraulic oils, gasoline, diesel fuel and many solvents.
- The F7-HPS-1, -2 are suitable for gasoline, kerosene or solvents.
- The F7-HSS is designed for high temperatures or corrosives.
SUGGESTED SPECIFICATIONS
Level switch shall be operated by a (specify material) float actuating a SPST hermetically sealed reed switch potted in a (specify material) stem, with normally open contacts, reversible to normally closed. Switch shall be W. E. Anderson Model No. F7-____.