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Dwyer Series F7 Level Switch

Low Cost, Reliable, Compact. Hermtically Sealed

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, -SS2 AC: 25VA. 1.0A, 200V DC: 10W, 1.0A, 200V
    F7-PP, -BT, -HSS AC: 30W, 0.14A, 220V DC: 0.28A, 24V; 0.07A, 120V
    F7-HPS-1, -2 AC/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)