Siemens C11 - User Manual
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Table of Contents:
- Page 2 – SITRANS P; Transmitters for differential pressure and flow; Introduction; Mode of operation; Parameterization using
- Page 3 – Technical data; Application
- Page 4 – Accuracy
- Page 5 – Displays and controls; Certificates and approvals
- Page 6 – Communication
- Page 7 – Ordering data; Order code
- Page 8 – Example for ordering
- Page 9 – example for ordering
- Page 13 – Dimensional drawings
Siemens FI 01 · 2000
1/28
SITRANS P
Introduction
Transmitters for differential pressure and flow
■
Application
The transmitter measures
• the differential pressure,
• low pressures above or below atmospheric pressure,
• the flow q ~
(in conjunction with a primary differential
pressure device)
of gases, vapors and liquids. Different spans are possible de-
pending on the version.
The output signal is a load-independent direct current of 4 to
20 mA or a digital bus signal where a linear characteristic (pro-
portional to the differential pressure) or a square-rooted charac-
teristic (proportional to the flow) can be selected.
Transmitters conforming to the type of protection "Intrinsic safe-
ty" and "Explosion-proof" may be installed within potentially ex-
plosive atmospheres (zone 1). The conformity certificate
corresponds to the European standard (CENELEC), the Ameri-
can standard (FM) or the Canadian standard (CSA).
The transmitters can be equipped with various designs of re-
mote seals for special applications such as the measurement of
highly viscous substances.
■
Adjustable spans
■
Types of protection and conformity certificates
Fig. 1/16 SITRANS P transmitters for differential pressure and flow, with built-in analog indicator or digital display
D
p
Series
Span in bar
1
to
30,000
HK
DS
DS (PA)
Measuring cells from 20 mbar to 30 bar
Series
Type of protection
Conformity certificate
Intrinsic
safety
Explosion-
proof
CENELEC
FM/CSA
HK
4
4
DS
4
4
4
4
DS (PA)
4
4
4
o
4
= Exists
o
= In planning
Fig. 1/17 Functional diagram
5
7
1
6
4
3
+
-
2
4
,
8
9
10
11
I A U H
C
12
14
00 00000
M
00000
00
15
M
13
13
m
14
HK series
DS series
+
Differential pressure
-
as input variable
I
A
Output signal
U
H
Power supply
1 Process flange
2 Body of measuring cell
3 Filling liquid
4 Seal diaphragm
5 O-ring
6 Center diaphragm
7 Silicon pressure sensor
8 Instrument amplifier
9 Analog-to-digital converter
10 Microcontroller
11 Digital-to-analog converter or
PROFIBUS-PA interface
12 Digital display for
parameterization
13 Keys for parameterization
14 Analog indicator (option)
15 Digital display for
parameterization
and measured value
}
HK series
DS series with
PROFIBUS-PA
Fi01_e_K01_S22-33.fm Seite 28 Freitag, 17. Dezember 1999 2:35 14
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Summary
Siemens FI 01 · 2000 1/29 SITRANS P Transmitters for differential pressure and flow Introduction ■ Mode of operation The differential pressure is applied via the seal diaphragm (4, Fig. 1/17) and the filling liquid (3) to the silicon pressure sensor (7). If the measuring limits are exceeded, the ove...
Siemens FI 01 · 2000 1/30 SITRANS P Technical data Transmitters for differential pressure and flow ■ Technical data HK7MF4420, MF4520 DS7MF4432, 7MF4532 DS with PROFIBUS-PA7MF4432, 7MF4532 Application See page 1/28 Mode of operation Measuring principle See page 1/29 Piezo-resistive Input Measured va...
Siemens FI 01 · 2000 1/31 SITRANS P Transmitters for differential pressure and flow Technical data ■ Technical data HK7MF4420, MF4520 DS7MF4432, 7MF4532 DS with PROFIBUS-PA7MF4432, 7MF4532 Accuracy (continued) Influence of static pressure • On start-of-scale value 0.15 % per 100 bar at max. span; ...
