D1T / D2T0 pages
Index: H / 923-1485
Metal Diaphragm Pressure Switches
D1T/D2T
Mechanical single/dual pressure switch
Repeatability ±1.0 % at constant temperature
Features
► Metal diaphragm pressure switch
► Wetted parts welded
► Direct acting, no friction, high accuracy
► Approvals: Ex ia, UL, CSA, marine, SIL2/3 (IEC 61508)
Adjustment ranges
0.005 ... 10.3 bar and
-0.006 ... -1 bar (Vaccum)
Applications
Machine and tool engineering,
Autoclaves, pump control,
Refrigerant monitoring, chemical industry
Ship building applications
Technical Data
Wetted parts:
Stainless steel 17 - 7PH /
SS304
Repeatability:
±1 % at constant temperature
Switching rate:
max. 20/min
Temperature range:
-40 °C... +75 °C
Protection class:
IP65
Housing:
Top part: aluminium powder
coated
bottom part: aluminium
anodized
Weight:
Electrical connection:
D1T-...: approx. 1.0 kg
D2T-...: approx. 1.1 kg
Set point adjustment:
Turn the adjustment screw
clockwise to decrease the set
point
Intrinsically safe:
1/4" NPT female thread
Optional: 1/2" NPT female
thread (P2)
Many micro switch versions
with different
switching powers and
hysteresis are available and
make
it possible to make customized
changes.
The switches are also available
for
intrinsically safe applications.
Add
"Exi" in case of ordering.
Maximum
rating according to ATEX: Umax
= 28 V Imax = 50 mA
Approval:
Process connection:
Electrical load capacity and
hysteresis:
---
WAGO terminal and cable
gland M20 x 1.5;
clamping range ø 5 ... 11 mm
Pressure Ranges
Pressure range
code
Adjustment range [bar]
Max. operating
pressure [bar]
Proof pressure
[bar]
Increasing press. Decreasing press.
Max. hysteresis of switch
types in bar (end of range)
short term
H, GH [bar]
M, GM [bar]
0.004
0.006
Overpressure
2SS
0.005 ... 0.11
0.001 ... 0.11
0.15
0.2
3SS
0.012 ... 0.20
0.002 ... 0.196
0.5
0.7
18SS
0.050 ... 1.20
0.030 ... 1.20
3.0
80SS
0.300 ... 5.50
0.030 ... 5.30
8.0
150SS
0.500 ... 10.30
0.100 ... 9.90
3SS
-0.006 ... -0.20
18SS
-0.040 ... -1.00
.
.
4.0
.
.
0.004
.
0.010
.
10.7
0.110
15.0
20.0
0.180
-0.002 ... -0.196
0.15
0.2
0.004
-0.020 ... -0.970
0.5
1.0
.
.
.
.
.
.
.
.
.
0.010
0.040
0.240
0.420
.
.
.
.
.
Vacuum
Barksdale
.
.
Subject to technical changes.
.
.
0.020
.
.
0.009
0.060
.
.
1
"