Siemens SITRANS P Brochure & Specs page 134

SITRANS P measuring instruments for pressure
SITRANS P Accessories
Supplementary electronics for 4-wire connection
■
Overview
2
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.
■
Technical specifications
SITRANS P, supplementary electronics for 4-wire connection
Output
Output signal
Load
Voltage measurement
Electrical isolation
Measuring accuracy
Conformity error (in addition to
transmitter)
Influence of ambient temperature
Power supply effect
Load effect
Rated conditions
Ambient temperature
Storage temperature
Degree of protection
Electromagnetic compatibility
(EMC)
2/134 Siemens FI 01 · 2009
© Siemens AG 2008
0 ... 20 mA or 4 ... 20 mA
Max. 750 Ω
Linear (square-rooting in transmit-
ter if necessary)
Between power supply and input/
output
To EN 60770-1
≤ 0.15% of set span
≤ 0.1% per 10 K
≤ 0.1% per 10% change in volt-
age or frequency
≤ 0.1% per 100% change
-20 ... +80 °C (-4 ... +176 °F)
-50 ... +85 °C (-58 ... +185 °F)
IP54 to EN 60529
EN 50081, EN 50082
Structural design
Dimensions (W x H x D) in mm
(inch)
Electrical connection
Power supply
Supply voltage
Permissible ripple (within the speci-
fied limits)
■
Dimensional drawings
SITRANS P pressure transmitters with supplementary electronics for four-
wire connection, dimension drawing, dimensions in mm (inch)
■
Schematics
I
Supplementary electronics for 4-wire connection, connection diagram
80 x 120 x 60 (3.15 x 4.72 x 2.36)
Screw terminals (Pg 13.5 cable
inlet) or Han 7D / Han 8U plug
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)
Approx. 2.5 V
pp
U