B40-P & B40-H
Liquid Level Switch
ASME B31.1 Compliant
D E S C R I P T I O N
Magnetrol B40-P & B40-H liquid level switches are
utilized in high pressure, high temperature service
conditions. They are designed, constructed and certified
to the ASME B31.1 Power Piping code.
F E A T U R E S
•
Choices of chamber materials are 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" butt welds
1" or 1
1
⁄
2
" socket welds
A P P L I C A T I O N S
•
Accumulators
•
Receivers
•
Flash tanks
•
Knock-out drums
•
Storage tanks
•
Separators
•
Drip Legs
O P T I O N S
•
ATEX housing
•
Flanged connections
•
Temperature extensions
•
Low specific gravity calibration
•
Additional QC testing
T E C H N O L O G Y
B40 level switches employ permanent magnetic force as
the 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° C 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)
TYPE 4X/7/9 Cast Iron Enclosure
TYPE 4X Carbon Steel Enclosure
TYPE 4X/7/9 Aluminum Enclosure
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
A S M E
B 3 1 . 1
C O N S T R U C T I O N
WELDING
All welding is performed by qualified welders and per
procedures required by the ASME Boiler Pressure Vessel
Code Sec. IX. Welds are visually inspected for FULL
penetration. All other non-destructive examination is
performed per ANSI B31.1.
HYDROSTATIC TEST
All chambers are hydrostatically tested at 1.5 times the
design pressure.
PRODUCT DESIGN
Pressure vessels are designed within code specified
stress limits. Design calculations, design prints and weld
qualifications are available for audit. All chamber branch
and circumferential weld joints are designed to achieve
FULL penetration.
MATERIALS OF CONSTRUCTION
All pressure-retaining materials are procured with
Certificates of Conformance to assure compliance of
components with required standards.
3
B A S I C
E L E C T R I C A L
R A T I N G S
Voltage
120 VAC
240 VAC
24 VDC
120 VDC
240 VDC
C
15.00
15.00
10.00
1.00
0.50
Switch Series and Non-Inductive Ampere Rating
D
F
HS
R
S/AC
S/DC
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
—
—
D I M E N S I O N A L
I N C H E S
( M M )
5.93
(150)
Rotation Clearance
3.87
(98)
S P E C I F I C A T I O N S
10.12
Electrical (257)
Connection
8.46
(214)
Plug
1
1
⁄
2
" Socket Weld
8.50
(215)
7.19
(182)
Rising Level
0.50 (13)
0.50 (13)
4.75
(121)
9.50
(241)
6.62
L
(168)
C
Falling Level
Rotation Clearance
5.93
(150)
3.87 (98)
1
1
/
2
" Socket Weld
19.62 (498)
7.56
(192)
Electrical
Connection
10.12
(257)
8.46
(214)
B40-PC30
Plug
Rotation Clearance
5.93
(150)
A
3.87 (98)
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)
10.12
D
(257)
Electrical
Connection
8.46
C
(214)
1
1
/
2
" Socket Weld
25.63 (651)
10.56
(268)
Plug 1" Socket Weld
B40-PC40 and B40-HC40
7.19
(132)
4.18
(106)
C
L
Rising Level
0.50 (13)
0.50 (13)
4.15
(105)
Falling Level
5.56
(141)
8.30
(210)
7.19
(182)
1" Socket Weld
19.88 (504)
B40-PC20
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
8.00 (203)
1" Schedule 80 Weldolet
7.19
(182)
3.90
(99)
C
L
3.90
(99)
Rising Level
0.50 (13)
0.50 (13)
5.56
(141)
Falling Level
1" Schedule 80 Weldolet
8.18 (208)
20.88 (530)
B40-HF30 and B40-PF30
5.93
(150)
3.87 (98)
Rotation Clearance
8.46
(214)
10.12
(257)
Electrical
Connection
Plug
8.00 (203)
1" Sockolet
7.19
(182)
4.15
(105)
C
L
4.15
(105)
Rising Level
0.50 (13)
0.50 (13)
5.56
(141)
Falling Level
1" Sockolet
8.18 (208)
NOTES:
20.88 (530)
B40-PB60 and B40-HB60
1. Allow 8 inches (203 mm) overhead clearance for cover removal.
2. Maximum ambient temperature at switch head should not
exceed +140° F (+60° C).
5
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