B1X / B2X0 pages
Index: G / 923-1500
Bourdon Tube Press. Switches `
B1X/B2X
Mechanical single/dual pressure switch
Repeatability ±1.0 % at constant temperature
Features
► Bourdon tube pressure switch
► All welded parts wetted
► Direct acting, no friction, high accuracy
► Approvals: Ex ia, Ex d, UL, CSA, SIL 2/3 (IEC 61508)
Adjustment ranges
5.3 ... 496 bar
Applications
Petrochemicals industry,
Process technology,
Shipbuilding technology,
Alarm applications
Technical Data
Weight:
max. 20/min
Temperature range:
-40 °C... +75 °C
Protection class:
IP65
Housing:
Explosion proof housing, aluminum
anodized and lacquered
Process connection:
1/4" NPT female thread except
ranges marked with*). These
switches have proof pressures
above 500 bar and are provided
with high pressure thread with
adapter G1/4'' IG.
Ex: Ex d II C T6 acc. to ATEX
cULus:
Class I, Groups B, C, D
Class II, Groups E, F, G acc.
to Underwriter Laboratories Inc.
and Canadian Standard Assn.
±1 % at constant temperature
Switching rate:
The switches are designed for
intrinsically safe applications.
Please add "Exi" to your ordering
details when placing an order. To
comply with the intrinsically safe
approval following max. ratings
must not be
exceeded:
Umax = 28 V Imax = 50 mA
Approval:
Repeatability:
Turn the adjustment screw
clockwise to decrease the set
point.
Intrinsically safe:
Stainless steel 1.4401
Stainless steel 1.4401
B1X-...: approx. 3.9 kg
B2X-...: approx. 3.9 kg
Set point adjustment:
Wetted parts:
Process connection:
Bourdon tube:
Electrical connection:
Internal terminal strip (0.5 - 2.5
mm2), approved cable gland has to
be provided by the customer
Electrical rating and
hysteresis:
Many micro switch versions with
different switching powers and
hysteresis are applicable and make
it possible to make customized
changes.
Pressure Ranges
Pressure range
code
Adjustment range [bar]
Increasing press. Decreasing press.
Max. operating
pressure [bar]
12SS
5.3... 83
3.4... 81
100
20SS
13.7... 137
11.0... 134
250
32SS
22.4... 220
16.5... 215
400
72SS*
79.3... 496
41.4... 459
600
Barksdale
Proof pressure
[bar]
Max. hyst. of the different switches in
bar (end of range)
(short term)
H, GH [bar]
M, GM [bar]
125
0.96
1.86
2.68
5.44
2.75
5.90
.
.
.
.
Subject to technical changes.
330
500
950
.
.
.
.
.
.
.
.
.
16.90
.
.
37.90
.
1
"