Miniature Multi-Station Level Switch Series F7-MM

Miniature Multi-Station Level Switch Series F7-MM
p354:Layout 6
7/8/09
3:00 PM
Page 1
Miniature Multi-Station Level Switch
Series
F7-MM
Custom, Lightweight, Low Cost, 316 SS or Buna-N Floats
Float Dimensions
L5 A
15/16
[23.80]
L4
01.000
[25.40]
F1
B
L3
LO
1-19/32
[40.49]
Ø 29/32
[22.61]
L2
1-1/4
[31.75]
0 29/32
[22.86]
F2
Level
Float
Type
F1
F2
F3
F4
F5
F6
A
in.
7/8
3/4
3/4
13/16
9/16
15/16
B
in.
1-3/4
1-7/8
1-13/16
2-7/16
2-7/16
1-7/8
F7
F8
13/16
3/4
2
1-7/8
D
in.
3/4
1-1/16
15/16
1-7/16
1-3/4
7/8, NO
1-3/16, NC
1-1/8
1-1/16
0 3-5/8
[92.08]
3/16
[4.78]
1 5 F1 1
#
F1
F2
F3
F4
F5
F6
F7
F8
Overall Length
Options
354
Type 4
1-1/2 HEX
[38.10]
1-5/16-12 THREAD
Type 5
Type 3
3/8-24
THREAD
Type 6
Electrical Connection: 24˝ (61 cm)
free leads #22 AWG, TFE jacketed.
Mounting Orientation: Vertical ±30°.
F7-MMB1-5F11-03.00-07.00-11.00-15.00-20.00-25.00
Multi-station level, 1 to 5 switch points
Brass with Beryllium copper stops
316SS with SS ARMCO PH-15-7MO stops
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
Put 1 to 5 for the number of switch points desired
Material
Min. s.g.
Max. Pres. psi (bar)
Buna-N
.45
300 (20.68)
Buna-N
.60
250 (17.24)
316SS
.70
100 (6.89)
316SS
.85
150 (10.34)
316SS
1.1
400 (27.58)
PTFE
.65
1000 (68.95)
316SS
.85
275 (18.96)
316SS
.90
600 (41.37)
SPST, .17A @ 120 VAC, .08A @ 240 VAC, .13A @ 120 VDC, .06A @ 240 VDC
SPST, .8A @ 120 VAC, .4A @ 240 VAC (not UL)
NO switch is standard. For NC place an “*” after the corresponding set point distance in the model
number
1
2
3
4
5
6
1
2
L5
L4
L3
L2
L1
L0
6 HOLES 0 5/16 [7.95]
EQUALLY SPACED
ON A 3.000 B.C.
[76.20]
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).
Models are built to your specifications
1 NPT
Type 2
1/8 NPT
Miniature custom level switches with a sturdy, lightweight design are ideal for tanks
less than four feet (1.2 m) deep. Control up to five different level points across a maximum
length of 48˝ (121 cm). Stems and mounting fixtures are available in 316 SS or brass.
Set Point
Distance
F8
1-5/16 Hex
[33.32]
3/4 NPT
Type 1
Actuation Levels
Each switching point requires one float.
A = Minimum distance from actuation point to bottom of mounting.
B = Minimum distance between actuation levels.
D = Minimum distance from end of unit to lowest actuation point.
Switch
Type
1-9/64
[29.79]
F7
1-1/16 Hex
[26.97]
1/8 NPT
[.125]
1/2 HEX
[12.7]
Switch Points
Float Type
1-1/8
[28.58]
Mounting Dimensions
D
F7-MM B
F7-MM
B
S
1-7/32
[30.99]
1-1/32
[26.16]
F6
F4, F5
L1
Example
Construction
Stem & Connection
Material
Connection
Type
F3
1-3/32
[27.79]
Ø 29/32
[22.86]
1
[25.40]
0 1-1/2
[38.10]
00.00
00.00
00.00
00.00
00.00
VISIT OUR WEBSITES:
In inches referenced from bottom of connection
Repeat for each switch point with dashes in between.
No numbers needed beyond the number of switches specified. In inches for example 12.25 would
be 12.25˝ from the bottom of the process connection.
00.00 Maximum overall length of 48 inches (121 cm). Minimum length is L1 + D.
www.dwyer-inst.com
•
www.dwyer-inst.co.uk
•
www.dwyer-inst.com.au
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