Series F7-MM Miniature Multi-Station Level Switch

Custom, Lightweight, Low Cost, 316 SS or Buna-N Floats

The Series F7-MM Miniature Multi-Station Level Switches provides a customized level switch to meet application requirements in a miniature size. Control up to five different level points across a maximum length of 48" (121 cm). Stems and mounting fixtures are available in 316 stainless steel or brass.

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Product Applications

Water level monitoring
Oil level control
Tank level control
Diesel level monitoring

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Models & Ordering

Specifications

Service:: Compatible liquids.
Wetted Materials:: Stem, connection, and float.
Temperature Limits:: F1 and F2: Water, 180°F (82.2°C); Oil, -40 to 250°F (-40 to 121.1°C). All other floats: -40 to 300°F (-40 to 148.9°C).
Electrical Connection:: 24" (61 cm) free leads #22 AWG, TFE jacketed.
Mounting Orientation:: Vertical ±30°.

Features

Customized miniature level indication in a compact, lightweight design ideal for tanks less than 4' (1.2 m) deep
Rugged construction with multiple options yielding exceptional versatility
Miniature custom level switches are sturdy, compact and lightweight yet still rugged and durable

Model Chart

EXAMPLE

F7-MM

01.25

03.50

09.75

12.00

15.95

20.00

Series F7-MMB1-5F11-01.25-03.50-09.75-12.00-15.95-20.00-12 Miniature Multi-Station Level Switch, brass with beryllium copper stops, 1/8" NPT, 5 switch points, Buna-N float, min. s.g. 0.45, max. pressure 300 psi, SPST, .17A @ 120VAC, L5 set point distance 1.25", L4 set point distance 3.5", L3 set point distance 9.75", L2 set point distance 12", L1 set point distance 15.95", 20" overall length, with 12' lead wire.

SERIES

F7-MM

Miniature Multi-Station Level Switch

STEM & CONN.
MATERIAL

B
S

Brass with Beryllium Copper Stops
316SS with SS Armco PH-15-7MO Stops

CONNECTION
TYPE

1
2
3
4
5
6
7

1/8" NPT
3/4" NPT (cannot be used with float F1, F3, F7 and F8)
1" NPT (cannot be used with float F3)
3-5/8" Flange [maximum pressure is 50 psi (3.45 bar)]
1-5/16-12UNF-2A (cannot be used with float F3)
3/8-24
2" NPT and 1/2 conduit (only use with float F3 and 316SST)

NUMBER OF
SWITCH
POINTS

1
2
3
4
5

1 Switch Point
2 Switch Points
3 Switch Points
4 Switch Points
5 Switch Points

FLOAT TYPE

F1
F2
F3
F4
F5
F6
F7
F8

Buna-N, Min. S.G. 0.45, Max. Pressure 300 psi (20.68 bar)
Buna-N, Min. S.G. 0.60, Max. Pressure 250 psi (17.24 bar)
316SS, Min. S.G. 0.70, Max. Pressure 100 psi (6.89 bar)
316SS, Min. S.G. 0.85, Max. Pressure 150 psi (10.34 bar)
316SS, Min. S.G. 1.10, Max. Pressure 400 psi (27.58 bar)
TFE, Min. S.G. 0.65, Max. Pressure 1000 psi (68.95 bar)
316SS, Min. S.G. 0.85, Max. Pressure 275 psi (18.96 bar)
316SS, Min. S.G. 0.90, Max. Pressure 600 psi (41.37 bar)

SWITCH TYPE

1
2

SPST, .17 A @ 120 VAC
SPST, .8 A @ 120 VAC
NO switch is standard. For NC place and "*" after the corresponding set point distance in the model number.

SET POINT
DISTANCE
(L5)

00.00

In inches referenced from bottom of connection. Example: 01.25 would be 1.25" from the bottom of the process connection.

SET POINT
DISTANCE
(L4)

00.00

In inches referenced from bottom of connection. Example: 03.50 would be 3.5" from the bottom of the process connection.

SET POINT
DISTANCE
(L3)

00.00

In inches referenced from bottom of connection. Example: 09.75 would be 9.75" from the bottom of the process connection.

SET POINT
DISTANCE
(L2)

00.00

In inches referenced from bottom of connection. Example: 12.00 would be 12" from the bottom of the process connection.