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12 Technical data
12 Technical data
12 . 1 Ambient conditions
Icing, condensation and dew in and on the unit are not per-
mitted.
Permitted ambient temperature in operation: 0 to +60°C (32
to 140°F).
Long-term use in the upper ambient temperature range ac-
celerates the ageing of the elastomer materials and reduces
the service life (please contact manufacturer).
Storage and transport temperatures: -20 to +40°C (4 to
104°F).
Medium temperature: 0 to +60°C (32 to 140°F).
Avoid direct sunlight or radiation from red-hot surfaces on
the unit. Note the maximum medium and ambient temper-
atures!
Avoid corrosive influences, e.g. salty ambient air or SO
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-pressure
cleaner and/or cleaning products.
12 .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.
DG smart · Edition 09.23 · EN
The gas must be clean and dry in all temperature conditions
and must not contain condensate.
Max. inlet pressure p
measuring range and max. deviations, see page 29 (12.4
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.
12 .3 Electrical data
100% duty cycle (continuous operation)
Safety class: 3
DGS..A (ePSD Cat A): non-fail-safe regulating and control
.
2
functions.
DGS..C (ePSD Cat C): fail-safe regulating and control func-
tions.
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)
= withstand pressure,
max.
= max. 20 cm
3
/h.
L
28
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