Wika DPGT40 Instrukcja Użytkownika Strona 9

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GB
WIKA operating instructions dierential pressure transmitter, model DPGT40 9
14093267.01 03/2014 GB/D/F/E
3. Specications
Electrical data
Power supply U
B
DC V
12 < U
B
≤ 30
Inuence of power
supply
% FS/10 V
≤ 0.1
Permissible residual
ripple
% ss
≤ 10
Output signal
Variant 1
Variant 3
Variant 4
4 … 20 mA, 2-wire, passive, per NAMUR NE 43
0 ... 20 mA, 3-wire
0 ... 10 V, 3-wire
Permissible max. load R
A
for variant 1 - 3
R
A
≤ (U
B
- 12 V)/0.02 A with R
A
in Ohm and U
B
in
Volt, however max. 600 Ω
Eect of load
(variant 1 - 3)
% FS
≤ 0.1
Electrical zero point
through a jumper across terminals 5 and 6 (see
operating instructions)
Long-term stability of
electronics
% FS/a
< 0.3
Electr. output signal ≤ 2.5 % of the measuring span (option ≤ 1.6 %)
Linearity
% of span
≤ 2.5 % (option ≤ 1.6 %), terminal method
Electrical connection via angular connector, 180° rotatable, wire
protection, cable gland M20 x 1.5, incl. strain relief,
connection cable: Outer diameter 7 ... 13 mm,
conductor cross-section 0.14 ... 1.5 mm
2
,
temperature resistance up to 70 °C
Ingress protection Angular connector: IP 65 per EN 60529 / IEC 60529
EMC directive 2007/108/EC interference emission (limit class B)
and immunity to EN 61 326-1
As a power supply, an unstabilised DC power supply is sucient in the range of
the specied limits. It is important to ensure that the applied power supply is at
least greater than the maximum required voltage drop from the external display
and evaluation units; i.e. the voltage at the pressure transmitter must not fall
below 10 V.
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