B1S / B2S0 pages
Index: E / 923-1494
Bourdon Tube Pressure Switches
Type B1S/B2S
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
Adjustment ranges
4.8 ... 950 bar
Applications
Pump control,
Die-casting machines,
Press control,
Power plants,
Alarm functions
Technical Data
Wetted parts:
Process connection:
Electrical ratings and
hysteresis:
A large variety of micro switches
offers different electrical ratings
and hysteresis for many
applications.
Weight:
B1S-...: approx. 0.6 kg
B2S-...: approx. 0.7 kg
Set point adjustment:
Turn the adjustment screw
clockwise to decrease the set point
Intrinsically safe:
Stainless steel 1.4401
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:
---
Stainless steel 1.4401
Bourdon tube:
Repeatability:
±1 % at constant temperature
Switching rate:
max. 20/min
Temperature range:
-40 °C... +75 °C
Protection class:
IP00
Housing:
Without housing for installation
in control panels:
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 female".
Electrical connection:
Lead wire PVC 1.5 mm2,
length appr. 450 mm
Connection Chart
Pressure range
code
Adjustment range [bar]
Max. operating
pressure [bar]
Test pressure
[bar]
Max. hysteresis of switch types in
bar (end of range)
Increasing press.
Decreasing press.
(short term)
H, GH [bar]
M, GM [bar]
12SS
4.8 ... 82
3.4 ... 81
90.
100.
0.96.
1.86.
32SS
13.7 ... 220
11.0 ... 217
250.
280.
2.68.
5.44.
5.90.
48SS
22.4 ... 330
16.5 ... 325
370.
415.
2.75.
65SS*
30.3 ... 448
22.5 ... 440
500.
560.
3.58.
7.92.
120SS*
79.3 ... 827
41.4 ... 790
850.
1035
16.90.
37.90.
180SS*
79.3 ... 950
41.4 ... 950
999.
1380
16.90.
37.90.
Barksdale
Subject to technical changes.
1
"