MAGNETROL B40-1F30-R1M

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 temperature 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 11⁄2" socket welds
O P T I O N S
A P P L I C A T I O N S
• Accumulators
• Receivers
• Flare pots
• 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 Πinto or out of the field of a switch
actuating magnet  causing switch operation. A nonmagnetic barrier tube Ž effectively isolates the switch
mechanism from the controlled liquid.
Snap
Switch
Pivot
3
2
1
Tension Spring
Swing-In Position
Float
Pivots
A G E N C Y
A P P R O V A L S
AGENCY
APPROVED MODEL
APPROVAL CLASSES
FM
All with an electric switch mechanism and a housing
listed as Type 4X/7/9
Class I, Div 1, Groups C & D
Class II, Div 1, Groups E, F & G
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 B, C & D
Class II, Div 1, Groups E, F & G
All with a Series F, HS, 8 or 9 electric switch mechanism
and a housing listed as CSA Type 4X
Class I, Div 2, Groups B, C & D
All with an electric switch mechanism and a housing
listed as Type 4X/7/9
Class I, Div 1, Groups C & D
Class II, Div 1, Groups E, F & G
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 B, C & D
Class II, Div 1, Groups E, F & G
All with an electric switch mechanism and an
ATEX housing
ATEX II 2 G EEx d IIC T6
94/9/EC
IEC Ex Ex d IIC T6
Low Voltage Directive 2006/95/EC
Per Harmonized Standard:
EN 61010-1/1993 & Amendment No. 1
Installation Category II
Pollution Degree 2
CSA
ATEX / IEC Ex Œ
CE
ΠIEC Installation Instructions:
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.
2
Maximum Process
Temperature
Temperature
Classification
< 85° C
T6
< 100° C
T5
< 135° C
T4
< 200° C
T3
< 300° C
T2
< 450° C
T1
These units are in conformity with IECEx KEM 05.0020X
Classification Ex d IIC T6
Tambient -40° to +70° C
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 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)
SERIES C, D, R & S DRY CONTACT SWITCHES
• Designed for AC and DC current applications
• 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
B A S I C
Voltage
120 VAC
240 VAC
24 VDC
120 VDC
240 VDC
NEMA 4X/7/9 Cast Iron Enclosure
E L E C T R I C A L
R A T I N G S
Switch Series and Non-Inductive Ampere Rating
S (AC) S (DC)
F
HS
R
8
C
D
15.00
15.00
10.00
1.00
0.50
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
TYPE 4X Carbon Steel Enclosure
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
S P E C I F I C A T I O N S
( M M )
5.93
(150)
3.87
(98)
Rotation Clearance
10.12
(257)
8.46 (214)
Electrical
Connection
Plug 1" Socket Weld
Rotation Clearance
5.93
3.87 (150)
(98)
7.19
(132)
5.56
(141)
4.18
(106)
CL
4.15
(105)
Rising Level
0.50 (13)
0.50 (13)
Falling Level
8.30
(210)
8.46 (214)
10.12
(257)
Electrical
Connection
7.19
(182)
1" Socket Weld
19.88 (504)
B40-5C20
Plug
1 1⁄2" Socket Weld
8.50
(215)
6.62
(168) CL
O.D.
7.19
(182)
4.75
(121)
Rising Level
9.50
(241)
0.50 (13)
0.50 (13)
Falling Level
11/2" Socket Weld
7.56
(192)
19.62 (498)
5.93
(150)
3.87 (98)
B40-3C30
Rotation Clearance
8.46
(214)
10.12
Electrical (257)
Connection
Plug
11/2" Socket Weld
9.50
(241)
6.63
(168) CL
7.19
(132)
5.06
(129)
Rising Level
0.50 (13)
0.50 (13)
Falling Level
6.12
(155)
11/2" Socket Weld
22.63 (574)
B40-4C40
4
9.06
(230)
10.12
(257)
D I M E N S I O N A L
I N C H E S
S P E C I F I C A T I O N S
( M M )
5.93
(150)
3.87 (98)
Rotation Clearance
8.46
(214)
10.12
(257) Electrical
Connection
Plug
1" Weldolet
9.75
(248)
4.88
(124)
5.93
(150)
8.50
(216)
7.19
(132)
Rising Level
3.87
(98)
6.63
CL (168)
0.50 (13)
0.50 (13)
Rotation Clearance
1" Schedule 80
Beveled Nipple
Falling Level
8.46 (214)
10.12 (257)
5.37
(136)
7.07
(180)
Electrical
Connection
1" Weldolet
19.63
(499)
14.50
(368)
Plug
8.00 (203)
B40-1C50
7.19
(182)
Rising Level
CL
5.93 (150)
3.87
(98)
0.50 (13)
Falling Level
5.56
(141)
O.D.
4.50
(114)
1" Socket Weld
8.46
(214)
0.50 (13)
1" Schedule 80
Beveled Nipple
B40-1F30 6.68 (169)
B40-2F30 7.06 (179)
10.12
(257)
B40-1F30 17.88 (454)
B40-2F30 18.63 (473)
Electrical
Connection
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)
B40-1B60 and B40-2B60
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).
5
M O D E L
N U M B E R
BASIC MODEL
B40
B40 Liquid Level Switch
MATERIALS OF CONSTRUCTION/PRESSURE RATING (psig)
Code
Chamber
Material
Float
Min.
Tank Connection
MaterialŒ
S.G.
Temperature (°F)
100
500
750
800
1000
2067
1777
1670
1668
651
1857
1566
1294
1240
n/a
11/2" socket weld
1925
1820
1250
1100
215
11/2" socket weld
3700
3543
3169
3129
3011
5C20 Carbon Steel
1" socket weld
2085
1820
1350
1110
165
1C50 Chrome-Moly
1" weld coupling
2533
2010
1872
1845
956
1F30
1" welding nipple
Chrome-Moly 321/347 SS
1B60
1" socket weld
2F30
1" welding nipple
304 SS
316 SS
2B60
1" socket weld
0.65
3C30 Carbon Steel
4C40
316 SS
321/347 SS
ΠFloat material based on availability. Both 321SS and 347SS are stabilized
austenitic stainless steels.
 Consult factory for TYPE 4X/7/9 cast iron housings.
Ž Aluminum enclosure limited to +750° F (+399° C) in hazardous locations.
 Process temperature based on +100° F (+38° C) ambient.
 On steam applications, temperature down-rated to +400° F (+204° C) process
at +100° F (+38° C) ambient.
B
6
4
0
ELECTRIC SWITCH MECHANISM AND ENCLOSURE FOR ALL MODELS EXCEPT B40-5C20

TYPE 4X/7/9 Aluminum Enclosure Ž
ATEX
Class I, Div. 1
Class I, Div. 1
Process
Temperature
Range 
One
Set
Point
Groups C & D
Group B
Ex II 2 G EEx
d IIC T6
Series F Snap Switch
Hermetically Sealed
-50° to +750° F
(-46° to +399° C)
SPDT
DPDT
FKB
FNB
FKK
FNK
FC9
FF9
Series H1 Hermetically Sealed 1 Amp
Snap Switch with Wiring Leads
-50° to +750° F
(-46° to +399° C)
SPDT
HKJ
HKK
N/A
Series R Snap Switch
-40° to +750° F
(-40° to +399° C)
Series S Snap Switch for
AC Current Applications
-40° to +550° F
(-40° to +288° C)
Series S Snap Switch for
DC Current Applications
-40° to +250° F
(-40° to +121° C)
Series 8 Hermetically
Sealed Snap Switch
-50° to +750° F
(-46° to +399° C)
Series 9 Hermetically
Sealed Snap Switch
-50° to +750° F
(-46° to +399° C)
SPDT
DPDT
SPDT
DPDT
SPDT
DPDT
SPDT
DPDT
SPDT
DPDT
RKB
RNB
SKB
SNB
SLB
SOB
8KB
8NB
9KB
9NB
CS/Aluminum
RKK
RNK
SKK
SNK
SLK
SOK
8KK
8NK
9KK
9NK
RC9
RF9
SA9
SB9
SC9
SF9
8C9
8F9
9C9
9F9
Switch Description
TYPE 4X
-40° to +1000° F
(-40° to +538° C)
-50° to +1000° F
(-46° to +538° C)
Series R
Snap Switch
Series 9 Hermetically
Sealed Snap Switch
B
4
SPDT
DPDT
SPDT
DPDT
R1M
RDM
9AM
9DM
Cast Iron
Class I, Div 1,
Class I, Div 1,
Groups C & D
Group B
RKM
RKW
RNM
RNW
9KM
9KW
9NM
9NW
0
ELECTRIC SWITCH MECHANISM AND ENCLOSURE FOR MODEL B40-5C20 ONLY
One
Set
Point
Class I, Div. 1
Groups C & D
Class I, Div. 1
Group B
Ex II 2 G EEx
d IIC T6
Series C Snap Switch
-40° to +450° F
(-40° to +232° C)
Series D Snap Switch for
DC Current Applications
-40° to +250° F
(-40° to +121° C)
Series F Snap Switch
Hermetically Sealed
-50° to +750° F
(-46° to +399° C)
SPDT
DPDT
SPDT
DPDT
SPDT
DPDT
CKB
CNB
DKB
DNB
FKB
FNB
CKK
CNK
DKK
DNK
FKK
FNK
CC9
CF9
DC9
DF9
FC9
FF9
Series HS 5 amp Snap Switch
Hermetically Sealed
w/Terminal Block 
-50° to +550° F
(-46° to +288° C)
SPDT
HM3
HM4
HA9
DPDT
HM7
HM8
HB9
Series HS 5 amp Snap Switch
Hermetically Sealed
w/Wiring Leads 
-50° to +550° F
(-46° to +288° C)
SPDT
HMJ
HMK
—
DPDT
HMS
HMT
—
Switch Description
B
TYPE 4X/7/9 Aluminum Enclosure Ž
Process
Temperature
Range 
4
0
5
C
2
ATEX
0
7
Q U A L I T Y
The quality assurance system in place at
Magnetrol guarantees the highest level of
The Magnetrol quality assurance system is
registered to ISO 9001 affirming its com-
quality throughout the company. Magnetrol
is committed to providing full customer
satisfaction both in quality products and
mitment to known international quality
standards providing the strongest assurance
of product/service quality available.
quality service.
W A R R A N T Y
All Magnetrol mechanical level and flow
controls are warranted free of defects in
materials or workmanship for five full years
from the date of original factory shipment.
If returned within the warranty period; and,
upon factory inspection of the control, the
cause of the claim is determined to be covered under the warranty; then, Magnetrol
will repair or replace the control at no cost
to the purchaser (or owner) other than
transportation.
Magnetrol shall not be liable for misapplication, labor claims, direct or consequential
damage or expense arising from the installation or use of equipment. There are no
other warranties expressed or implied,
except special written warranties covering
some Magnetrol products.
5300 Belmont Road • Downers Grove, Illinois 60515-4499 • 630-969-4000 • Fax 630-969-9489 • www.magnetrol.com
145 Jardin Drive, Units 1 & 2 • Concord, Ontario Canada L4K 1X7 • 905-738-9600 • Fax 905-738-1306
Heikensstraat 6 • B 9240 Zele, Belgium • 052 45.11.11 • Fax 052 45.09.93
Regent Business Ctr., Jubilee Rd. • Burgess Hill, Sussex RH15 9TL U.K. • 01444-871313 • Fax 01444-871317
Copyright © 2011 Magnetrol International, Incorporated. All rights reserved. Printed in the USA.
Performance specifications are effective with date of issue and are subject to change without notice.
BULLETIN: 46-120.20
EFFECTIVE: April 2009
SUPERSEDES: June 2007