Series 123/125 Boiler Water Level Control

Series 123/125 Boiler Water Level Control

Series F7-MM Miniature Multi-Station Level Switch

Series F7-MM Miniature Multi-Station Level Switch

Series F6 & F7 Level Switches – Vertical

Low Cost, Reliable and Compact, Hermetically Sealed Contacts

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 float rises toward the mounting threads.

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Product Applications

  • Water level monitoring
  • Oil level control
  • Chemical level indication
  • Sumps
  • Stand pipes
  • Tank level control
  • High viscosity liquids
Starting at $23.75
Grouped product items
Model Description Availability* Qty Price
F7-BT Vertical level switch, Buna-N & epoxy float, polybutylene terephthalate stem, temperature limit 220°F (105°C), pressure limit 150 psig (10 bar), 0.45 min. specific gravity, electrical rating 30 VA: 0.14A @ 220 VAC, 22 AWG 24" (61 cm) wire leads, 1/8" male NPT mounting, UL listed, weight 0.7 oz (20 g). 1-3 days*
$26.25
F7-MPP Vertical level switch, polypropylene float and stem, temperature limit 180°F (82°C), pressure limit 100 psig (6.89 bar), 0.90 min. specific gravity, electrical rating 10 VA: 0.1A @ 100 VAC N.C. operation, 22 AWG 24" (61 cm) wire leads, 1/8" male NPT mounting, weight 0.8 oz (23 g). 1-3 days*
$57.00
F7-MPP-NO Vertical level switch, polypropylene float and stem, temperature limit 176°F (80°C), pressure limit 100 psig (6.89 bar), 0.90 min. specific gravity, electrical rating 50 VA: 0.2A @ 240 VAC N.O. operation, 22 AWG 24" (61 cm) wire leads, 1/8" male NPT mounting, weight 0.8 oz (23 g). 1-3 days*
$57.00
F7-PP Vertical level switch, polypropylene & epoxy float, polypropylene stem, temperature limit 220°F (105°C), pressure limit 100 psig (6.89 bar), 0.60 min. specific gravity, electrical rating 30 VA: 0.14A @ 220 VAC, 22 AWG 24" (61 cm) wire leads, 1/8" male NPT mounting, UL listed, weight 0.8 oz (23 g). 1-3 days*
$23.75
F7-PVC Vertical level switch, CPVC float and stem, temperature limit 180°F (82°C), pressure limit 15 psig (1 bar), 0.85 min. specific gravity, electrical rating 20 VA: 0.08A @ 240 VAC, 22 AWG 24" (61 cm) wire leads, 1/4" male NPT mounting, weight 5 oz (140 g). 5-6 Weeks*
$148.00
F7-SB Vertical level switch, Buna-N & epoxy float, 316SS stem, temperature limit 220°F (105°C), pressure limit 150 psig (10 bar), 0.60 min. specific gravity, electrical rating 25 VA: 1A @ 220 VAC, 22 AWG 18" (45 cm) wire leads, 1/8" male NPT mounting, UL listed, weight 2 oz (58 g). 1-3 days*
$60.00
F7-SS2 Vertical level switch, 316SS (CYC) float, 316SS stem, temperature limit 300°F (149°C), pressure limit 450 psig (31 bar), 0.75 min. specific gravity, electrical rating 25 VA: 1A @ 200 VAC, 22 AWG 18" (45 cm) wire leads, 1/8" male NPT mounting, UL listed, weight 1.2 oz (34 g). 1-3 days*
$62.50
F7-ST713 Vertical level switch, 316SS float and stem, temperature limit 300°F (149°C), pressure limit 750 psig (52 bar), 0.80 min. specific gravity, electrical rating 20 VA: 0.08A @ 240 VAC, 22 AWG 24" (61 cm) wire leads, 1/4" male NPT mounting, weight 6 oz (170 g). 1-3 days*
$338.00
F7-T1 Vertical level switch, PTFE float, TFE stem, temperature limit 300°F (149°C), pressure limit 30 psig (2 bar), 0.80 min. specific gravity, electrical rating 20 VA: 0.08A @ 240 VAC, 22 AWG 24" (61 cm) wire leads, 1/4" male NPT mounting, weight 6 oz (170 g). 5-6 Weeks*
$926.00

Specifications

Series F6
Service:
Compatible liquids.
Wetted Materials:
See model table on catalog page.
Temperature Limit:
F6-SS & F6-MHS: -4 to 257°F (-20 to 125°C). F6-HPS-11, 21, 31: 14 to 176°F (-10 to 80°C).
Pressure Limit:
F6-SS & F6-MHS: 218 psi (15 bar). F6-HPS-11, 21, 31: 116 psi (8 bar).
Enclosure Rating:
General purpose.
Switch Type:
SPST Hermetically sealed reed switch, reversible for NO or NC.
Electrical Rating:
20 VA: 0.17 A @ 120 VAC, 0.08 A @ 240 VAC.
Electrical Connections:
22 AWG, 11.811" (300mm) long.
Process Connection:
F6-SS: 1/8" NPT, HPS-21, 31: 1/2" NPT, F6-MHS, F6-HPS-11: M16*2.
Mounting Orientation:
F6-SS: vertical ±20°, F6-MHS/HPS: horizontal with index arrow pointing up or down.
Specific Gravity:
F6-SS: 0.65, F6-MHS: 0.85, F6-HPS-11, 21, 31: 0.6.
Weight:
F6-HPS-11, 21: 1.23 oz (38 g), F6-MHS-31: 1.41 oz (40 g), F6-MHS: 3.35 oz (95 g), F6-SS: 1.59 oz (45 g).
Agency Approvals:
CE.

Series F7
Electrical Rating (Maximum):
F7-SB, -SS2 AC: 25 VA, 1.0A, 200 V DC: 10 W, 1.0 A, 200 V F7-PP, -BT, -HSS, -MHS AC: 25 VA, 1.0 A, 200 V DC: 10 W, 1.0 A, 200 V F7-HPS-1, -2 AC: 25 VA, 1.0 A, 200 V DC: 10 W, 1.0 A, 200 V (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), 1/2" NPTM (F7-HPS-2, F7-HSS), M16 x 2 (F7-HPS-1), 1/2" x 13 thread (F7-MHS).
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), models F7-HSS, -MHS.
Magnet:
Alnico (F7-SB, -PP, -BT, -HPS), ceramic (F7-SS2, -HSS, -MHS).
Weight:
2 oz. (58 g), F7-SB; 1.2 oz. (34g), F7-SS2; 0.8 oz. (23 g), F7- PP; 0.7 oz.. (20 g), F7-BT; 1.5 oz. (43 g), F7-HPS-1; 2 oz. (57 g), F7- HPS-2 and -MHS; 3 oz. (94 g), F7-HSS.

Features

  • Combine low cost and reliability with fast, simple installation
  • 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
  • Easily 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
  • Switch ratings are suitable for many solid state control systems and monitors or alarms
  • Simple relay interfaces can be used for higher current applications

Questions

Question
How are the F6 & F7 vertical level switches converted from N.O. to N.C. or vice versa?
Answer
The float is removed and replaced upside down.
Question
Why is the minimum specific gravity important on the float level switches?
Answer
If a medium has a lower s.g. than the rated minimum for a float, the float will sink through the media and the switch will not operate.
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