45-610 Displacer Type Liquid Level Switches and Proof-er
®
Switches
37
B
1
4.5
Model Numbers
4.5.2 B10 & B15 Dual Switch Models (continued)
ELECTrIC SWITCH MECHANISM AND ENCLOSUrE
➇
FOr MODELS B10 AND B15
➀
Not available with displacer material and proof-er option codes K, L.
➁
Not available with displacer material and proof-er option codes D, E, F, K and L.
➂
Pressure/temperature ratings on page 13. Flanges are ANSI type.
➃
Not available with material of construction codes M and N.
➄
Not available with displacer material and Proof-er option codes K, L.
➅
Not available with material of construction code 4.
➆
316 SS flange is provided with material of construction code 4 and M.
➇
Consult factory for NEMA 4X/7/9 cast iron housings.
➈
Pneumatic switch mechanisms and enclosures are unavailable for Models B10
and B15 switches.
➉
Process temperature based on +100° F (+38° C) ambient.
Uncontrolled housing heater or drain available in NEMA 4X/7/9 enclosures.
Consult factory for standard part numbers.
On steam applications, temperature down rated to +400° F (+204° C) process
at +100° F (+38° C) ambient.
125# flanges will be cast iron.
11
12
13
Switch Description
➈
Max.
➉
Process Temp.
° F (°C)
Two
Set Points
Switch Enclosure
NEMA 4X/7/9
Class
I
, Div. 1,
Groups C & D
Class
I
, Div. 1,
Group B
ATEX
Series B Snap Switch
250
(121)
SPDT
BLB
BLK
BD9
DPDT
BOB
BOK
BG9
Series C Snap Switch
450
(232)
SPDT
CLB
CLK
CD9
DPDT
COB
COK
CG9
Series D Snap Switch
For DC Current Applications
250
(121)
SPDT
DLB
DLK
DD9
DPDT
DOB
DOK
DG9
Series F Hermetically Sealed
Snap Switch
500
(260)
SPDT
FLB
FLK
FD9
DPDT
FOB
FOK
FG9
Series 8 Hermetically Sealed
Snap Switch
500
(260)
SPDT
8LB
8LK
8D9
DPDT
8OB
8OK
8G9
11