B1T / B2T0 pages
Index: F / 923-1497
Bourdon Tube Pressure Switches
B1T/B2T
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, UL, CSA, marine, SIL2/3 (IEC 61508)
Adjustment ranges
4.8 ... 950 bar
Applications
Pump control,
Die-casting machines,
Press control,
Power plants,
Alarm functions
Technical Data
Electrical ratings and
hysteresis:
Repeatability:
±1 % at constant temperature
Switching rate:
max. 20/min
Temperature range:
-40 °C... +75 °C
Protection class:
IP65
Housing:
Internal terminal strip (0.5 ... 2.5 mm2)
Standard: WAGO terminal and
cable gland M20 x 1,5
Turn the adjustment screw clockwise
to decrease the set point
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:
---
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:
B1T-...: approx. 1.1 kg
B2T-...: approx. 1.2 kg
Aluminium, anodized
Process connection:
Weight:
Intrinsically safe:
Stainless steel 1.4401
Stainless steel 1.4401
A large variety of micro switches
offers different electrical ratings and
hysteresis for many applications.
Set point adjustment:
Wetted parts:
Process connection:
Bourdon tube:
Pressure Ranges
Pressure range
code
Adjustment range [bar]
Max. operating
pressure [bar]
Increasing press.
Decreasing press.
12SS
4.8 ... 82
3.4 ... 81
100
32SS
13.7 ... 220
11.0 ... 217
250
48SS
22.4 ... 330
16.5 ... 325
400
(short term)
65SS*
30.3 ... 448
22.5 ... 440
550
120SS*
79.3 ... 827
41.4 ... 790
900
180SS
79.3 ... 950
41.4 ... 950
999
Barksdale
Proof pressure Max. hysteresis of switch types in
bar (end of range)
[bar]
.
.
.
.
.
.
Subject to technical changes.
H, GH [bar]
M, GM [bar]
120
0.96
1.86
2.68
5.44
2.75
5.90
330
500
670
.
.
.
.
.
.
.
.
.
.
3.58
7.92
.
1200
16.90
1600
16.90
.
.
.
37.90
37.90
.
.
1
"