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The unit may only be stored/installed in enclosed
rooms/buildings.
The unit is suitable for a maximum installation height
of 2000 m AMSL.
Enclosure: IP 65.
This unit is not suitable for cleaning with a high-pres-
sure cleaner and/or cleaning products.
15.2 Mechanical data
Gas types for relative pressure sensor: natural gas,
town gas, LPG (gaseous), flue gas, biogas (max.
0.1 %-by-vol. H
S), hydrogen and air.
2
Gas types for differential pressure sensor: air.
The gas must be clean and dry in all temperature
conditions and must not contain condensate.
Max. inlet pressure p
max.
measuring range and max. deviations, see page
9 (15.4 Measuring range).
Maximum leakage rate Q
Upper housing section: steel fibre reinforced PBT
plastic with low gas release.
Lower housing section: AlSi 12.
Rp 1/4 (1/4" NPT) connecting thread.
Weight: 450 g.
15.2.1 Recommended tightening torque
Component
Rp 1/4 (1/4" NPT) connection on
aluminium lower section
T15 test point screw
T20 ground screw
M12 x 1 protective cap
15.3 electrical data
100% duty cycle (continuous operation)
Safety class: 3
DGS..A (ePSD Cat A): non-fail-safe regulating and
control functions.
DGS..C (ePSD Cat C): fail-safe regulating and
control functions.
Mains voltage: 24 V DC, ±20%, SELV/PELV, power:
≥ 5 W.
Overvoltage category III
Communication interface: 10/100 Mbit/s (Fast
Ethernet)
Bus protocol: Modbus TCP
electrical connection
Voltage supply and 4–20 mA signal: M12 connector
(plug/plug, 4-pin, A-coded).
4–20 mA output signal load impedance: ≤ 500 Ω
Ethernet: M12 connector (socket/coupling, 4-pin,
D-coded)
Functional earth: ground terminal for connecting
fine-strand cables up to 4 mm
Internal fuse: replaceable fuse (slow-acting, 200 mA).
= withstand pressure,
= max. 20 cm
3
/h.
L
tightening
torque
[ncm]
1000
150
100
60
2
.
15.3.1 output signal coding
The 4–20 mA output supplies the current pressure in
the form of an analog value. The pressure measur-
ing range is scaled to 4–20 mA.
The Recommendation NAMUR NE43 (standardiza-
tion of the signal level for the failure information of
digital transmitters with an analog output signal) is
used as a reference for standardized error informa-
tion (in addition to the measuring information).
Current
range
[mA]
22.0
21.0
MAX switching pressure detected
21.0
20.5
20.0
4.0
3.8
3.6
3.0
MIN switching pressure detected
Over-/undervoltage or over-/undertem-
2.0
1.0
0
Output off (internal or device error)
15.4 Measuring range
Relative pressure (positive pressure)
Meas-
With-
uring
stand
range
pressure
[mbar]
[mbar]
0–100
600
0–350
600
Meas-
uring
Accuracy at
range
25°C [% Fso]*
[mbar]
0–100
≤ ±0.5
0–350
≤ ±0.5
* Includes repeat accuracy, hysteresis and linearity using
the limit point method.
EN-9
Description
Overpressure detected
Upper error range
Upper tech range
Upper nominal range
Lower nominal range
Lower tech range
Lower error range
perature detected
Underpressure detected
MAX/MIn
switching
sensor type
point range
[mbar]
Stainless
steel,
11–100
media-insu-
Stainless
steel,
24–350
media-insu-
overall accuracy at
0–60°C to en 1854
[% Fso]
≤ ±1.6
≤ ±1.0
lated
lated
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