Siemens SITRANS P - Manual (Page 134)

SITRANS P measuring instruments for pressure
SITRANS P Accessories
Supplementary electronics for 4-wire connection
2/134 Siemens FI 01 · 2009
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Overview
SITRANS P pressure transmitter with supplementary electronics for 4-
wire connection
Direct connection of the supplementary electronics to a
SITRANS P pressure transmitter from the DS III HART series pro-
duces a transmitter for four-wire connection.
The supplementary electronics cannot be attached to explosion-
protected pressure transmitters. The supplementary electronics
is fitted in a light metal housing which is mounted on the left side
of the pressure transmitter.
Note on ordering:
The supplementary electronics has to be be ordered through the
supplementary options of the pressure transmitter in question.
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Technical specifications
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Dimensional drawings
SITRANS P pressure transmitters with supplementary electronics for four-
wire connection, dimension drawing, dimensions in mm (inch)
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Schematics
Supplementary electronics for 4-wire connection, connection diagram
SITRANS P, supplementary electronics for 4-wire connection
Output
Output signal 0 ... 20 mA or 4 ... 20 mA
Load Max. 750 Ω
Voltage measurement Linear (square-rooting in transmit-
ter if necessary)
Electrical isolation Between power supply and input/
output
Measuring accuracy To EN 60770-1
Conformity error (in addition to
transmitter) ≤ 0.15% of set span
Influence of ambient temperature ≤ 0.1% per 10 K
Power supply effect ≤ 0.1% per 10% change in volt-
age or frequency
Load effect ≤ 0.1% per 100% change
Rated conditions
Ambient temperature -20 ... +80 °C (-4 ... +176 °F)
Storage temperature -50 ... +85 °C (-58 ... +185 °F)
Degree of protection IP54 to EN 60529
Electromagnetic compatibility
(EMC) EN 50081, EN 50082
Structural design
Dimensions (W x H x D) in mm
(inch) 80 x 120 x 60 (3.15 x 4.72 x 2.36)
Electrical connection Screw terminals (Pg 13.5 cable
inlet) or Han 7D / Han 8U plug
Power supply
Supply voltage 230 V AC (-10 ... +6%,
47 ... 63 Hz, approx. 6 VA) or
24 V AC/DC (24 V AC ± 10%,
47 ... 63 Hz, approx. 3 VA)
Permissible ripple (within the speci-
fied limits) Approx. 2.5 V
pp
1 2
3
4
5
6 7
1 2
3
4
5
6 7 SL
+
1
+
2 3 4 5 6
SL
1 2
3
4
5
6 7 SL
+ -
- I a U H
Ia U H
I
a
U H
-
Terminals
1 HAN 8U/7D plug
2 plugs
AC 230 V
UC 24 V
Han 7D
Han 7D
Han 7D
Han 8U
I
a
Output current SL Protective earth conductor U
H
Power supply
© Siemens AG 2008