WIKA DPGT40 - Manual (Page 9)

GB
WIKA operating instructions differential pressure transmitter, model DPGT40 9
14093267.01 03/2014 GB/D/F/E
3. Specifications
Electrical data
Power supply U
B
DC V 12 < U
B
≤ 30
Influence 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
Effect 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 sufficient in the range of
the specified 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.