B40 Liquid Level Switch
D E S C R I P T I O N
The Magnetrol B40 liquid level switch is specifically
designed and constructed for high pressure, high tem-
perature service conditions.
F E A T U R E S
•
Choices of chamber materials include carbon steel,
stainless steel and chrome-moly
•
300 series stainless steel float.
•
Choice of switch mechanism:
Dry contact
Hermetically sealed
•
Minimum specific gravity 0.65
•
Choice of switch mechanism enclosure:
TYPE 4X polymer coated steel
TYPE 4X/7/9 Class I, Div. 1, Groups C & D,
polymer coated aluminum or cast iron
TYPE 4X/7/9 Class I, Div. 1, Group B,
polymer coated aluminum or cast iron
•
Choice of tank connection:
1" welding nipples
1" or 1
1
⁄
2
" socket welds
A P P L I C A T I O N S
•
Accumulators
•
Receivers
•
Flare pots
O P T I O N S
•
ATEX housing
•
Scrubbers
•
Flanged connections
•
Flash tanks
•
Temperature extensions
•
Knock-out drums
•
Low specific gravity
•
Storage tanks
•
Separators
T E C H N O L O G Y
B40 level switches employ permanent magnetic force as
the only link between the float and the switching element.
As the pivoted float follows liquid level changes, it moves
a magnetic sleeve
into or out of the field of a switch
actuating magnet
causing switch operation. A non-
magnetic barrier tube
effectively isolates the switch
mechanism from the controlled liquid.
Snap
Switch
Pivot
2
Tension Spring
3
1
Swing-In Position
Float
Pivots
A G E N C Y
AGENCY
A P P R O V A L S
APPROVED MODEL
APPROVAL CLASSES
FM
All with an electric switch mechanism and a housing
listed as Type 4X/7/9
All with an electric switch mechanism and a housing
listed as Type 4X/7/9 Class
I,
Div 1, Group B
Class
I,
Div 1, Groups C & D
Class
II,
Div 1, Groups E, F & G
Class
I,
Div 1, Groups B, C & D
Class
II,
Div 1, Groups E, F & G
Class
I,
Div 2, Groups B, C & D
Class
I,
Div 1, Groups C & D
Class
II,
Div 1, Groups E, F & G
Class
I,
Div 1, Groups B, C & D
Class
II,
Div 1, Groups E, F & G
ATEX
II
2 G EEx d
IIC
T6
94/9/EC
IEC Ex Ex d
IIC
T6
Installation Category
II
Pollution Degree 2
CSA
All with a Series F, HS, 8 or 9 electric switch mechanism
and a housing listed as CSA Type 4X
All with an electric switch mechanism and a housing
listed as Type 4X/7/9
All with an electric switch mechanism and a housing
listed as Type 4X/7/9 Class
I,
Div 1, Group B
All with an electric switch mechanism and an
ATEX housing
ATEX / IEC Ex
CE
IEC Installation Instructions:
Low Voltage Directive 2006/95/EC
Per Harmonized Standard:
EN 61010-1/1993 & Amendment No. 1
The cable entry and closing devices shall be Ex d certified suitable for the conditions of use
and correctly installed.
For ambient temperatures above +55° C or for process temperatures above +150° C, suitable
heat resistant cables shall be used.
Heat extensions (between process connection and housing) shall never be insulated.
Special conditions for safe use:
When the equipment is installed in process temperatures higher than +85° C the temperature
classification must be reduced according to the following table as per IEC60079-0.
Maximum Process
Temperature
< 85° C
< 100° C
< 135° C
< 200° C
< 300° C
< 450° C
Temperature
Classification
T6
T5
T4
T3
T2
T1
These units are in conformity with IECEx KEM 05.0020X
Classification Ex d
IIC
T6
Tambient -40° to +70° C
2
S P E C I F I C A T I O N S
S W I T C H
M E C H A N I S M S
A N D
E N C L O S U R E S
SERIES C, D, R & S DRY CONTACT SWITCHES
•
Designed for AC and DC current applications
•
Process temperatures to +1000° F (+538° C)
SERIES F, HS, 8 & 9 HERMETICALLY SEALED SWITCHES
•
Ideal for use in salt and other corrosive atmospheres
•
Positively pressurized capsule for entire mechanism
and contacts
•
Process temperatures to +1000° F (+538° C)
SWITCH ENCLOSURE
•
TYPE 4X blue polymer coated carbon steel, weather
resistant for non-hazardous areas
•
TYPE 4X/7/9 blue polymer coated aluminum and
cast iron enclosures
•
Designed to meet Class I, Div. 1 Groups C & D and
Class I, Div. 1 Group B
TYPE 4X/7/9 Aluminum Enclosure
NEMA 4X/7/9 Cast Iron Enclosure
TYPE 4X Carbon Steel Enclosure
B A S I C
Voltage
120 VAC
240 VAC
24 VDC
120 VDC
240 VDC
E L E C T R I C A L
R A T I N G S
C
15.00
15.00
10.00
1.00
0.50
Switch Series and Non-Inductive Ampere Rating
S
(AC)
S
(DC)
D
F
HS
R
8
10.00
—
10.00
10.00
3.00
2.50
—
4.00
0.30
—
5.00
5.00
5.00
0.50
0.25
1.00
1.00
1.00
0.40
—
15.00
15.00
10.00
1.00
0.50
10.00
—
10.00
4.00
3.00
1.00
—
3.00
—
—
9
—
—
0.50
—
—
3
D I M E N S I O N A L
I N C H E S
( M M )
S P E C I F I C A T I O N S
5.93
(150)
3.87
(98)
Rotation Clearance
10.12
(257)
Electrical
Connection
8.46 (214)
Plug 1" Socket Weld
Rotation Clearance
5.93
(150)
3.87
(98)
5.56
(141)
7.19
(132)
4.18
(106)
C
L
Rising Level
0.50 (13)
0.50 (13)
4.15
(105)
Falling Level
Electrical
Connection
10.12
(257)
8.46 (214)
1" Socket Weld
19.88 (504)
Plug
7.19
(182)
8.30
(210)
B40-5C20
1
1
⁄
2
" Socket Weld
8.50
(215)
7.19
(182)
Rising Level
0.50 (13)
0.50 (13)
6.62
(168)
C
L
O.D.
4.75
(121)
9.50
(241)
Falling Level
1
1
/
2
" Socket Weld
19.62 (498)
7.56
(192)
B40-3C30
Rotation Clearance
5.93
(150)
3.87 (98)
10.12
Electrical
(257)
Connection
8.46
(214)
Plug
9.50
(241)
1
1
/
2
" Socket Weld
7.19
(132)
Rising Level
0.50 (13)
0.50 (13)
6.63
(168) C
L
5.06
(129)
Falling Level
10.12
(257)
6.12
(155)
1
1
/
2
" Socket Weld
22.63 (574)
9.06
(230)
B40-4C40
4
D I M E N S I O N A L
I N C H E S
( M M )
S P E C I F I C A T I O N S
5.93
(150)
3.87 (98)
Rotation Clearance
8.46
(214)
10.12
(257)
Electrical
Connection
Plug
1" Weldolet
7.19
(132)
9.75
(248)
4.88
(124)
0.50 (13)
8.50
(216)
5.93
(150)
3.87
(98)
Rotation Clearance
Rising Level
0.50 (13)
6.63
C (168)
L
1" Schedule 80
Beveled Nipple
8.46 (214)
10.12 (257)
Electrical
Connection
Falling Level
7.07
(180)
5.37
(136)
1" Weldolet
19.63
(499)
14.50
(368)
Plug
8.00 (203)
7.19
(182)
Rising Level
B40-1C50
5.93 (150)
3.87
(98)
1" Socket Weld
8.46
(214)
10.12
(257)
Electrical
Connection
C
L
4.50
(114)
0.50 (13)
0.50 (13)
Falling Level
5.56
(141)
O.D.
1" Schedule 80
Beveled Nipple
B40-1F30 6.68 (169)
B40-2F30 7.06 (179)
B40-1F30 17.88 (454)
B40-2F30 18.63 (473)
B40-1F30 and B40-2F30
15.62
(396)
Plug
8.00
(203)
7.19
(182)
Rising Level
C
L
0.50 (13)
0.50 (13)
Falling Level
5.56
(141)
O.D.
5.62
(143)
1" Socket Weld
B40-1B60 6.68 (169)
B40-2B60 7.06 (179)
B40-1B60 17.88 (454)
B40-2B60 18.63 (473)
NOTES:
1. Allow 8 in (203 mm) overhead clearance for cover removal.
2. Maximum ambient temperature at switch head should not
exceed +140° F (+60° C).
B40-1B60 and B40-2B60
5
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