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7
Level
Installation, operation & maintenance instructions
IP152, Rev AD
April
2012
Operating Level Data
Models Type No. B
11F, B
12F, B
13F, B
14F, B
17D, X
11F, X
12F, X
13F, X
14F, X
17D
C = Highest Operating Liquid Level D (Multi-Switch) = Lowest Operating Liquid Level
D (Single Switch) = Reset Level D-C = Wet Switching Differential (Max)
Operating Levels : Single switch models
Min Operating S.G. 11F : 0.80 12F : 0.75 13F : 0.65 14F : 0.54
Dimension C 50 50 50 50
Dimension D 70 70 70 70
Op
erating Levels : Multi-switch models
Min Operating S.G. 11F : 0.80 12F : 0.75 13F : 0.65 14F : 0.54
Dimension C 50 50 50 50
Dimension D 170 170 170 170
Operating Levels : Type 17D float in any chamber : Single switch only
Min Operating S.G. 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2
Dimension C 65 73 82 91 100 109 118 127 136
Dimension D 118 122 127 132 137 141 147 152 156
Dimensional Data : Enclosures
Type Duty Height G Conduit Thread Switch Adjustment Weatherproof Rating
R7A, R71
Flameproof
190
1” NPT
10
IP66 to IEC 60529
(NEMA 4)
S7A, S71 300 94
R4N
Weatherproof
170
1” NPT
10
IP66 to IEC 60529
(NEMA 4)
S4N 275 94
L4N 375 194
Enclosures for use with 8 contact switch mechanisms have both conduit entries threaded, whilst those for use with 4 contact
switch mechanisms have only one entry. See Note 4, page 4.