Endress+Hauser cerabar M PMP 46 Manual

Technical
Information
TI322P/00/en
Applications
The Cerabar M transmitter measures the
gauge and absolute pressure of gases,
vapours and liquids and can be used in
all areas of industry.
Installation and process conditions often
make the use of diaphragm seals
necessary. Endress+Hauser offers you
the following:
•PMP 46: diaphragm seals for hygienic
applications
•PMP 48: diaphragm seals with
threaded boss, separator, flange or
flange with extension
Features and Benefits
•Accuracy
−Linearity better than 0.2% of set span
−Adjustable measuring range with
TD 10:1
−Long-term stability better than 0.1%
•Piezoresistive metal sensor with metal
diaphragm for measuring ranges up to
400 bar (6000 psi).
•Electronics
−Analogue: cost effective version with
short response time especially for
fast processes
−Smart: intelligent with versatile
operating procedures via HART
protocol
−PROFIBUS-PA: tried and tested for
digital communications
•Housing
With its stainless steel housing and no
dead volume, the Cerabar M fulfils all
the special hygienic requirements of
the food and pharmaceutical
industries. The polyester-epoxy
coated aluminium housing has proven
itself well in the process industry.
•Process connections
All customary thread versions,
hygienic connections and flanges
available.
Pressure Transmitter
cerabar M PMP 46
cerabar M PMP 48
Overload resistant pressure transmitter with
diaphragm seal and analogue, Smart or
PROFIBUS-PA electronics
PMP 46
Clamp
PMP 48
Flange
Hauser+Endress
The Power of Know How

Construction Diaphragm
seal Connection Page/Version Standard Nominal width Pressure range Instrument type
Hygienic
applications Diaphragm
seal
Groove nut Page 21 DIN 11851 DN 32,
DN 40,
DN 50
max. 40 bar
(600 psi)
PMP 46
Page 23 SMS 1½", 2"
Page 23 RJT 1½", 2"
Page 23 ISS 1½", 2"
Clamping
bracket
Page 24 Varivent Type N
Page 22 Clamp 1½", 2", 3"
Flange Page 24 DRD D = 65 mm
Pipe
diaphragm
seal
Thread
adapter
Page 21 DIN 11851 DN 25,
DN 40,
DN 50
Clamping
bracket
Page 22 Clamp ¾", 1", 1½", 2"
Threaded boss Diaphragm
seal
G Page 27 DIN ISO
228/1
G 1
G 1½
G 2
max. 400 bar
(6000 psi)
PMP 48
NPT Page 27 ANSI
B1.20.1
1 NPT
1½ NPT
2 NPT
Threaded boss
with separator Diaphragm
seal
G Page 28 EN 837 G ½ max. 160 bar
(2300 psi)
NPT Page 28 ANSI
B1.20.1
½ NPT
Flange Diaphragm
seal
DIN
flange
Page 29 DIN 2501 DN 25
DN 50
DN 80
max. 400 bar
(6000 psi)
ANSI
flange
Page 30 ANSI B.16.5 1", 2", 3", 4"
Flange with
extension Diaphragm
seal
DIN
flange
Page 29 DIN 2501 DN 50
DN 80
ANSI
flange
Page 30 ANSI B.16.5 2", 3", 4"
2

Housings
The stainless steel housing of Cerabar M
is especially remarkable due to its
chemical resistance and hygienic
properties. Having no dead volume and
being condensation-tight with a surface
roughness of Ra ≤0,8 µm, it is easy to
clean and thereby ideal for the food and
pharmaceutical industry.
The aluminium housing has proven its
ruggedness and has become a
standard in many industries such as
chemicals, papermaking, power
generation, water and wastewater
treatment.
•Ingress protection
−IP 65 with Harting plug (Han7D),
−IP 66/Nema 4X as standard or
−IP 68/Nema 6P with 5 m (16.4 ft)
assembled cable with pressure
compensation or plug M 12x1.
This version is recommended for
very moist applications (e.g. wet
vessel walls or pipes).
•Optional connection with
−cable gland M 20x1.5 or
−cable entry ½ NPT or G ½,
−Harting plug (Han7D) or
plug M 12x1 or
−with assembled cable
•A raised cover with sight glass is
provided when using a display. A low
cover is available for versions without
a local display.
Electronic Inserts
Cerabar M has three electronics versions
•Analogue: 4…20 mA
Operation directly at the measuring
point with one potentiometer each for
lower range-value and upper
range-value and a three-step range
switch as well as an on/off switch for
damping.
•Smart: 4…20 mA with HART protocol
Operation:
−at the measuring point via two push
buttons for lower range-value and
upper range-value as well as an
on/off switch for damping, or
−via the Universal HART Communicator
DXR 275 handheld terminal at any
point along the 4…20 mA line, or
−via PC e.g. with the Endress+Hauser
Commuwin II operating program.
•PROFIBUS-PA:
Operation:
– Using a PC with an operating
program, e.g. Commuwin II from
Endress+Hauser, or
– using two keys for lower range-value
and upper range-value.
low coverraised cover
with sight glass
for display
display
holder for
display
electronic insert
housing
process connection
PMP 48
e.g. flange
process connection
PMP 46
e.g. with dairy
thread connection
process connection
PMP 48
e.g. with G 2 A thread
Instrument Configuration of Cerabar M with Stainless Steel Housing
3

Displays
A display module can be used for
showing measured values and for
simplifying local operation. The display
is plugged onto the electronic insert
using a holder.
•Analogue display for Cerabar M with
analogue electronics: The analogue
display gives the current pressure
value related to the measuring range
in the form of a bar graph.
•Digital display for Cerabar M with
Smart electronics: The digital display
gives the pressure in the form of a
four-digit number. The appropriate
current value from 4…20 mA is shown
as a bar graph underneath.
•Digital display for Cerabar M with
PROFIBUS-PA electronics:
The digital display gives the pressure
in the form of a four-digit number. The
bar graph depicts the current pressure
value related to the measuring range.
Process Connections
•Process connections are available
with all common threads,
flush-mounted hygienic connections
and flanges (see summary, page 2).
•Chemical resistance can be
guaranteed by selecting suitable
materials for the process connection.
This applies especially to the metal
separating diaphragm of the
diaphragm seal in contact with the
medium.
•The diaphragm is welded to every
diaphragm seal with no dead volume.
raised cover
with sight glass
for display
display
holder for
display electronic insert
housing
process connection
PMP 48
e.g. with G 2 A thread
process connection
PMP 46
e.g. with dairy
thread connection
process connection
PMP 48
e.g. flange
low cover
Instrument Configuration of Cerabar M with Aluminium Housing
4

Measuring System System Components
The complete measuring system
consists of:
•Cerabar M pressure transmitter with
−analogue output 4…20 mA and
−supply voltage, e.g. with the
RN 221N transmitter power supply
unit from Endress+Hauser
Supply voltage: 11.5…45 V DC
or
•Cerabar M pressure transmitter with
−4…20 mA signal output and HART
communication signal and
−supply voltage, e.g. RN 221N
transmitter power supply unit from
Endress+Hauser
Supply voltage: 11.5…45 V DC
or Ex ia: 11.5…30 V DC
or
•Cerabar M pressure transmitter with
−PROFIBUS-PA digital communication
signal and
−connection via segment coupler to a
PLC or PC using e.g. the
Endress+Hauser Commuwin II
operating program
Supply voltage: 9…32 V DC
or Ex ia: 9…24 V DC
ENDRESS + HAUSER
Cerabar M
Cerabar M
PROFIBUS-PA
PROFIBUS-DP
via segment coupler
connection to
PLC or PC
Supply voltage
(e.g. with RN 221N):
11.5…45 V DC
for Ex ia (Smart electronics only):
11.5…30 V DC
4…20 mA
Complete measuring
system Cerabar M
above:
with PROFIBUS-PA
electronics
below:
with Smart electronics or
with analogue electronics
5

Operating Principle Piezoresistive Sensor with
Diaphragm Seal
The process pressure acting on the
diaphragm of the diaphragm seal is
transmitted to the metallic separating
diaphragm of the sensor by the filling
fluid of the diaphragm seal. The
separating diaphragm is deflected and
the fluid transmits the pressure to a
resistance bridge. The bridge output
voltage, which is proportional to
pressure, is then measured and
evaluated.
Advantages:
•For process pressures up to 400 bar
(6000 psi)
•Excellent long-term stability
•Guaranteed resistance to overload up
to 4-times nominal pressure
(max. 600 bar/9000 psi)
6
5
2
1
3
4
2
1
6
5
4
3
process pressure
process pressure
➀Diaphragm of
diaphragm seal
➁Copper ring
➂Diaphragm seal filling
fluid
➃Metallic
separation diaphragm
➄Channel with
filling fluid
➅Polysilicone
measuring element
6

Operation Three electronics versions are available
for operating the Cerabar M.
•The analogue electronics is the
simplest and most cost-effective
method to operate the Cerabar M.
•Smart electronics opens up a wide
range of operating and calibration
routines. It can then be operated
either by means of a handheld
terminal or an operating program (e.g.
Endress+Hauser Commuwin II).
•The PROFIBUS-PA electronics provide
direct connection to the PROFIBUS-PA
field bus. The PROFIBUS-PA can be
easily set up and many values are
retrievable from the control room.
Analogue Electronics
For the Cerabar M with analogue
electronics lower range-value (Zero)
and upper range-value (Span) are
directly calibrated at the measuring
point via two potentiometers. The
required lower and upper range-values
must be applied as reference pressure.
•For coarse calibration of the
measuring span, a spread between
TD 1:1 and TD 10:1 can be selected
using DIP switches.
•A 2 s damping of the measured value
can be activated using a DIP switch.
•The analogue display shows the
pressure on a bar graph as a ratio to
the measuring range.
•Over- or under-run of the signal can
be indicated by a flashing of the bar
graph.
Smart Electronics
A Cerabar M with Smart electronics can
be calibrated with or without reference
pressure.
– When calibrating with reference
pressure, the pressure for lower
range-value and upper range-value
must be entered and confirmed by
pressing the Zero or Span key twice.
Press these keys once to display saved
values for lower range-value and upper
range-value.
– If you calibrate without reference
pressure, enter the measuring points
using a handheld terminal or using an
operating program.
•A damping of 2 s can be set directly
on the instrument. A damping value of
0...40 s can be selected using
communication.
•The digital display shows the pressure
as a four-character number. The
appropriate 4…20 mA current is
shown as a bar graph underneath.
•Error codes on the digital display and
in Commuwin II simplify error
diagnosis.
τ
τ
τ
1
off
on
23
1
off
on
23
1
off
on
23
τ
1
off
on
23
τ
1
off
on
23
fine coarse τ
Zero Span
1
off
on
23
12
+–
3
Display
Zero Span
fine 123τ
coarse
Potentiometer for
calibrating the
lower range-value
TD 1:1
TD 3:1
TD 6:1
TD 10:1
Switch position “on”
Damping = 2 s activated
Potentiometer and switches
for calibrating the upper range-value
Operating elements
Analogue display
(optional)
Damping switch
Coarse adjustment
for upper range-value
TD: turn down
Zero
Damping
on
Span
12
+–
3
Zero
Damping
on off
Span
Display
off
0,753
Digital display
(optional)
Keys for
calibrating the
lower range-
value
and upper
range-value
Lower range-
value:
Display
1x
Registration
1x
Upper range-
value:
Display
2x
2x
Registration
Switch position "on"
Damping = 2 s activated
Operating elements
7

PROFIBUS-PA Electronics
A Cerabar M with PROFIBUS-PA
electronics has the following operating
options.
•You can set a damping of between 0
and 40 s using communication.
•You can set instrument bus address
direct in the instrument using the
address switch.
•The digital display gives the pressure
as a four-digit number. The bar graph
depicts the current pressure value
related to the measuring range. The
measuring range can be set either on
site using the Zero and Span keys or
remotely using an operating program,
such as Commuwin II.
•Error codes on the digital display and
in Commuwin II simplify error
diagnosis.
Smart Electronics Operation Using a
Handheld Terminal
Using the Universal HART
Communicator DXR 275 handheld
terminal, you can set the Cerabar M,
make checks and use additional
functions such as "Damping" and
"Calibration without reference pressure"
all along the 4...20 mA line.
4...20 mA
R
EX EX
IOIO
minimum line resistance
250 Ω
Universal HART Comunicator
DXR 275
Cerabar M
*
*Use an
intrinsically
safe supply
voltage for Ex i
(e.g. RN 221 N)
Cerabar M
operation with Smart
electronics using a
handheld terminal
Zero Span
0,753
Zero Span
Display
address
on
off
123
12
345678
ON
OFF
14
16 32 64
Switch No.
Value
SW
HW
28
Digital display
(optional)
Keys for
calibrating the
lower range-
value
and upper
range-value
Lower range-
value:
Display
1x
Registration
1x
Upper range-
value:
Display
2x
2x
Registration
Operating elements
DIP switches to set
bus address
8

Smart Electronics Operation Using
PC
The Commubox FXA 191 connects
4…20 mA Smart transmitters that have a
HART protocol to the RS 232 C serial
interface of a personal computer. This
enables the transmitter to be remotely
operated with the Endress+Hauser
Commuwin II operating program.
You can connect the Commubox
FXA 191 at any point along the
4…20 mA line. It is also suited for
connection to intrinsically-safe signal
circuits.
Connecting to PROFIBUS-PA
PROFIBUS-PA is an open fieldbus
standard to enable serveral sensors and
actuators, including those in
explosion-hazardous areas, to be
connected to bus line. With
PROFIBUS-PA, two-wire looped
instruments can be supplied by the
sensor with power and digital process
information.
The number of instruments operated by
one bus segment is:
•up to 10 for Ex ia applications
•up to 32 for all further applications
(e.g. non-Ex, EEx nA)
+
PC with
operating program
e.g. Commuwin II
Commubox
FXA 191
Cerabar M
minimum line
resistance
250 Ω
supply voltage
4…20 mA
Cerabar M
operation with Smart
electronics using PC
ENDRESS + HAUSER
PC with
operating program
e.g. Commuwin II
PLC
Fieldbus with
PROFIBUS-PA
segment coupler
Cerabar M
pressure transmitters
PROFIBUS-DP
Cerabar M
operation with
PROFIBUS-PA
electronics
9

Installation Mounting Instructions
•The protective cap of the diaphragm
seal should only be removed just
before mounting.
•The diaphragm seal and the pressure
sensor together form a closed,
oil-filled, calibrated system. The
following rules should be observed:
−The filling hole is sealed and not to
be opened.
−When mounting the Cerabar M, it
should only be turned by the nut of
the diaphragm seal and not by the
hex nut of the Cerabar M.
Cleaning
The diaphragm of the diaphragm seal
must not be pressed in or cleaned with
pointed or hard objects.
Mounting
To prevent moisture from entering, the
cable entry should preferably hang
downwards or to the side.
Shifting of the Zero Point due to
Position
The Cerabar M is calibrated based on
the limit point method according to
DIN 16086.
Depending on the orientation of the
instrument, there may be a slight shift in
the measured value. Diaphragm seals
also shift the zero point depending on
the orientation of the instrument.
•neutral calibration position
•max. positive zero point shift
•max. negative zero point shift
This zero point shift due to position can
be corrected (refer to zero point
increase and decrease, page 16).
The max. effect of position for all
diaphragm seals is given in the tables
on page 21 onwards. These values are
for silicone oil. For other oils available,
the shift in zero point due to position
varies according to the density of the oil
(see page 12).
Mounting with Temperature Spacer
Endress+Hauser recommends the use
of a temperature spacer when extreme
media temperatures (from approx.
150°C/302°F) continually cause the
ambient temperature to exceed the
permissible limit of +85°C (+185°F).
100 mm*
* Additional zero point shift
caused by the hydrostatic
pressure of the water column
in the temperature spacer:
10 mbar (0.15 psi)
Information on the maximum installation height is given on page 21 onwards
(3.94 in)
Cerabar M with
temperature spacer
vertical
mounting
cable points
downwards
10

Installation
(Continuation)
Mounting with Capillary Tubing
To protect from high temperatures (max.
350°C/+662°F media temperature),
moisture, vibration, or where the
mounting point is not easily accessible,
the housing of the Cerabar M can be
mounted with a capillary tubing away
from the measuring point.
A bracket for mounting on a wall and
pipe is available for this:
•Material: 1.4301 (AISI 304)
•Order No.: 52001402
(It can also be selected as an
accessory in the Product Structure.)
Mounting point remote
from the measuring point
Measuring point:
•very moist
•hot
•strongly vibrating
•difficult to access
184.5
187.6
60.3
81
119.5
26 99 (119)
108 (122)
70
Values in brackets apply
to instruments with
raised cover.
Values in italics apply to
instruments with an
aluminium housing.
All dimensions are in mm.
Dimensions
•1 mm = 0.039 in
1 in = 25.4 mm
102.5
167.5
170.7
108 (122)
99 (119)
26
3
11

Design Planning for
the Diaphragm Seal
Diaphragm Seal Filling Fluid
The temperature and pressure of the
process are of critical importance when
selecting the filling fluid for the
diaphragm seal.
,
The suitability of the fluid to meet the
requirements of the medium must also
be considered. For foodstuffs
applications, only physiologically safe
fluids such as vegetable oil or silicone
oil (AK 100) may be used in the
diaphragm seal.
Guidelines for Mounting Capillary
Tubes
The transmitter should generally be
mounted below the tapping point. A
maximum height difference between the
tapping point and transmitter should not
be exceeded. This will otherwise result
in a break in the column of fluid in the
capillary and damage the diaphragm
seal.
•Minimum bending radius of capillary
tubing: 100 mm (3.94 in).
•In the case of applications in vacuum,
the instrument should be mounted
below the pressure tapping point.
Smallest Recommended Measuring
Span and Diaphragm Diameter
The effects of temperature cause the
diaphragm seal to expand. This in turn
gives rise to an additional temperature
effect on the zero point. When selecting
the diaphragm seal the following points
are to be observed:
•The nominal diameter of the
diaphragm seal determines the width
of the diaphragm.
•Temperature effects vary inversely
with the width of the diaphragm
diameter.
The largest possible width of diaphragm
should be chosen for small measuring
spans and/or capillaries so that
temperature effects remain within the
nominal range of the application.
Temperature Effects
The temperature coefficients of the
diaphragm seals as stated in the
technical data and dimensions (page 21
onwards) apply to silicone oil
(calibrating temperature +20°C/+68°F)
and are determined by the process and
ambient temperatures.
For other fluids, the TKvalue is to be
multiplied by the TKcorrection factor.
For instruments with capillary tubing, the
total temperature coefficient TKcan be
calculated by adding the TKof the
Cerabar M to that of the diaphragm
seal, together with the TKof the capillary
tubing.
The TKof the capillary tubing is
determined by the ambient temperature:
TKper meter for silicone oil:
0.5 mbar/10 K.
➀
➁
➄
➂
➃
Filling fluid
of
diaphragm seal
Code Permissible
temperature of
medium at
0.05 bar ≤pabs ≤1 bar
(0.73 psi ≤pabs ≤14.5 psi)
Permissible
temperature of
medium at
pabs ≥1 bar
(pabs ≥14.5 psi)
Maximum
height
difference
at pabs ≥1 bar
(pabs ≥14.5 psi)
Minimum
permissible
pressure
at +20°C
(+68°F)
Density
[g/cm3]TK -
Correction
factor
Remarks
Silicone oil
(AK 100) A, J –40…+180°C
(–40…+356°F)
–40… +250°C
(–40…+482°F)
max. 7 m
(max. 23 ft)
10 mbarabs
(0.15 psi)
0,96 1 standard, foodstuffs
applications
High-
temperature oil
(paraffin)
G,
H, K
–10…+200°C
(+14…+392°F)
–10… +350°C
(+14…+662°F)
max. 7 m
(max. 23 ft)
10 mbarabs
(0.15 psi)
0.81 0.72
Fluorolube FS-5 1) N –40…+80°C
(–40…+176°F)
–40…+175°C
(–40…+347°F)
max. 7 m
(max. 23 ft)
10 mbarabs
(0.15 psi)
1.87 0.91 inert oil e.g. for oxygen
or chlorine
Glycerine E — +15…+200°C
(+59…+392°F)
max. 4 m
(max. 13.1 ft)
10 mbarabs
(0.15 psi)
1.26 0.64 foodstuffs applications
Vegetable oil
(Neobee M20) D, F –10…+120°C
(+14…+392°F)
–10…+200°C
(+14…+392°F)
max. 7 m
(max. 23 ft)
10 mbarabs
(0.15 psi)
0.94 1.05 FDA No.:
21CFR172.856
1) Observe operating limits for oxygen service for non-metallic materials.
➀
➁➂➃ ➄
12

Electrical Connection Wiring Analogue and Smart
Electronics
The two-wire cable is connected to
screw terminals on the electronic insert.
•Supply voltage: 11.5…45 V DC;
additional for Smart electronics
Ex ia: 11.5…30 V DC
•Cable:
−Analogue: two-wire instrumentation
cable
−Smart: screened, twisted-pairs
−max. wire cross-section: 2.5 mm2
(solid conductor)
•Internal protection circuits against
reverse polarity, HF interference and
overvoltage peaks.
•Test signal:
The output current can be measured
using the terminal plugs for this
purpose on the electronic insert
without interrupting the process
measurement.
•Always connect the screening or
ground cable (if present) to the
internal ground terminal of the
housing, not to terminal 3.
12
+
+
–
–
3
Display
Zero Span
fine
123
τ
coarse
12
+–3
Test 4…20 mA
T 50 mA
*
Electrical connection analogue electronics
internal ground terminal
*For analogue
electronics versions with
certificate ATEX II 1/3 D
(non Ex supply voltage)
the instrument must
always be protected by a
50 mA (slow-blow) fuse.
U/V
R/Ω
0
1522
1000
840
500
11.5
30 45
20
Standard
EEx ia IIC T6
Load diagram for
analogue and Smart
electronics
12
+–3
12
+
+
–
–
3
Zero
Damping
on off
Span
Display
Test 4…20 mA
Electrical connection Smart electronics
internal ground terminal
13

Wiring PROFIBUS-PA
The digital communication signal is
transmitted to the bus using a two-wire
connecting cable. The bus cable also
carries the supply voltage.
•Supply voltage: 9…32 V DC
Ex ia: 9…24 V DC
•Bus cable:
Use a twisted, screened two-wire
cable. The following specifications
must be observed when using the
FISCO model (explosion protection):
−Loop resistance (DC):
15…150 Ω/km
−Inductance: 0.4…1 mH/km
−Capacitance: 80…200 nF/km
•Always connect the screening or
ground cable (if present) to the
internal ground terminal of the
housing, not to terminal 3.
Infomation on the structure and
grounding of the network are given in
Operating Instructions BA 198F
»PROFIBUS-PA: Guidelines for planning
and comissioning« and the
PROFIBUS-PA specification EN 50170
(DIN 19245).
Connection: M12 Plug
(PROFIBUS-PA)
Endress+Hauser also provides a
Cerabar M with a M12 plug. This version
can be easily connected to the
PROFIBUS network using a
preterminated cable.
Versions:
•PM ❏4❏–❏L1 ❏❏ ❏ P❏❏❏❏(❏)
•PM ❏4❏–❏L1 ❏❏ ❏ R❏❏❏❏(❏)
•PM ❏4❏–❏L2 ❏❏ ❏ P❏❏❏❏(❏)
•PM ❏4❏–❏L2 ❏❏ ❏ R❏❏❏❏(❏)
Connection M12 Plug
For hygienic applications or humid
operating areas, Endress+Hauser also
offers a Cerabar M with a M12 plug with
IP 68 ingress protection. A socket for
user-specific connection to this housing
connector is available from
Endress+Hauser, order no. 52006263.
Versions:
•PMP 4❏–❏L1 ❏❏ ❏ H❏❏❏❏(❏)
•PMP 4❏–❏L1 ❏❏ ❏ J❏❏❏❏(❏)
•PMP 4❏–❏L2 ❏❏ ❏ H❏❏❏❏(❏)
•PMP 4❏–❏L2 ❏❏ ❏ J❏❏❏❏(❏)
•PMP 4❏–❏L1 ❏❏ ❏ A❏❏❏❏(❏)
•PMP 4❏–❏L1 ❏❏ ❏ C❏❏❏❏(❏)
•PMP 4❏–❏L2 ❏❏ ❏ A❏❏❏❏(❏)
•PMP 4❏–❏L2 ❏❏ ❏ C❏❏❏❏(❏)
Connection Harting Plug
For applications in power stations, there
is a Cerabar M with a Han7D Harting
plug:
Versions:
•PM ❏4❏–❏H1 ❏❏❏❏❏❏❏❏(❏)
•PM ❏4❏–❏H2 ❏❏❏❏❏❏❏❏(❏)
+–
on
off
Zero Span
Display
123
1
2
+–3
address
internal ground terminal
Electrical connection PROFIBUS-PA electronics
Cerabar M
–
+
1 2 3
rdbk
gn
M12
screen
Cerabar M
–
+
1 2 3
bn bu bk
M12
PROFIBUS-PA
screen
Cerabar M
Han7D
–
+
1 2 3
bu bn gnye
screen
screen
(red)
–
(black)
not
connected
+
(green)
View onto pins, plug on instrument
screen
(black)
PA–
(blue)
not
connected
PA+
(brown)
View onto pins, plug on instrument
12
3
8
7
6
5
4
–
(brown)
+
(blue) PE connection
(green yellow)
Plug on instrument
14

Technical Data
General Information Manufacturer Endress+Hauser
Instrument Pressure transmitter
Designation Cerabar M PMP 46, PMP 48
Technical documentation
Version
Technical data
TI322P/00/en
03.05
according to DIN 19259
Application Measurement of absolute and gauge pressure in gases, vapours, liquids and dusts
Operation and System Design Measuring principle
Piezoresistive sensor with diaphragm seal The process pressure acting on the diaphragm of the
diaphragm seal is transmitted to the metal separating
diaphragm of the sensor by a filling fluid. The separating
diaphragm is deflected and the resulting pressure
proportional change in the output voltage of the resistance
bridge is then measured and evaluated.
Working volume: smaller than 1 mm2(0.039 in2)
Measuring system
with analogue electronics
(see page 7)
Cerabar M and supply voltage
Calibration via potentiometers for lower range-value and upper
range-value, optional analogue display
with Smart electronics
(see page 7)
Cerabar M and supply voltage:
– two keys on the instrument
Universal HART Communicator DXR 275
– PC with operating program e.g. Commuwin II via
Commubox FXA 191
Optional digital display.
with PROFIBUS-PA electronics
(see page 8)
Connection via segment coupler to PLC or PC with an
operating program e.g. Commuwin II.
Optional digital display.
Construction Stainless steel or aluminium housing,
all common diaphragm seal versions
see "Product Structure" and "Dimensions"
Signal transmission Analogue
Smart
PROFIBUS-PA
– 4…20 mA, 2-wire
– 4…20 mA with superposed HART communication signal,
2-wire
– digital communication signal, 2-wire
Input Measured variables Absolute or gauge pressure
Measuring ranges
The stated overload applies to the sensor. Please also note the maximum permissible overloads for the diaphragm
seals.
PMP 46 (max. 40 bar), PMP 48
Type of
pressure Measure- ment limits Min. span Overload Type of pressure Measure- ment limits Min. Span Overload
bar bar bar bar bar bar bar
gauge 0…1 0.1 4 absolute 0…1 0.1 4
gauge 0…4 0.4 16 absolute 0…4 0.4 16
gauge 0…10 1 40 absolute 0…10 1 40
gauge 0…40* 4 160 absolute 0…40 4 160
gauge 0…100* 10 400 absolute 0…100 10 400
gauge 0…400* 40 600 absolute 0…400 40 600
gauge –1…+1 0.2 4 * Absolute pressure sensors
gauge –1…+4 0.5 16
gauge –1…+10 1.1 40
15

Input (Continuation) Resistance to low pressures (vacuum resistance) to 10 mbarabsolute (0.15 psia)
Adjusting the span (turn down) to TD 10:1 (see also this page figure 2)
Zero point increase and Analogue
decrease Smart
PROFIBUS-PA
– ±10% within extended measurement limits
– any within extended measurement limits
– any within extended measurement limits
(see also this page figure 1)
Output Analogue signal 4…20 mA (analogue electronics)
Output signal 4…20 mA
Signal on alarm Signal overrun (>20.5 mA) or underrun (<3.6 mA)
Integration time (damping) Directly on instrument using DIP switches,
switch position "off": 0 s; "on": 2 s
4…20 mA with HART protocol (Smart electronics)
Output signal 4…20 mA with HART protocol
Resolution 1 µA
Signal on alarm optional 3.6 mA, 22 mA or "continue" (last current value will
be held)
Integration time (damping) Directly on instrument using DIP switches,
switch position "off": 0 s; "on": 2 s
or with Universal HART Communicator DXR 275
or using operating program e.g. Commuwin II: 0…40 s
PROFIBUS-PA (PROFIBUS-PA electronics)
Output signal Digital communication signal PROFIBUS-PA (Profile 3.0)
PA function Slave
Transmission rate 31.25 kBit/s
Response time Slave: approx. 20 ms
PLC: 300…600 ms for approx. 30 transmitters
(depending on segment coupler)
Integration time (damping) 0…40 ms via communication
Communication resistance none, PROFIBUS-PA termination-resistor
Physical layer IEC 61158-2
Accuracy Reference conditions DIN IEC 770 TU=25°C (+77°F)
Accuracy data adopted after entering "Low sensor
calibration" and "High sensor calibration" for lower
range-value and upper range-value.
Linearity including hysteresis and reproducibility
(based on the limit point method to DIN IEC 770)
±0.2% of set span***
Linearity at low absolute pressure ranges (due to
performance limits of currently available DKD
calibration rigs)
for ≥40 mbar absolute to <100 mbar absolute:
±0.3 % of set span***
Warm-up time Analogue
Smart
PROFIBUS-PA
– 200 ms
– 1 s
– 1 s
Rise time (T90 time) Analogue
Smart
PROFIBUS-PA
– 60 ms
– 220 ms
– 220 ms
Settling time Analogue
Smart
PROFIBUS-PA
– 180 ms
– 600 ms
– 600 ms
Long-term drift
(with reference to the set span***)
±0.1% per year
±0.25% per 3 years
Thermal effects
– with reference to the set span***
– Applies to transmitters without diaphragm seals or
capillary tubes, see also "Temperature Effects"
page 12.
Analogue electronics:
– for –10°C…+60°C (+14…+140°F): ±(0.3% x TD + 0.3%)
– for –40°C…–10°C (–40…+14°F),
+60°C…+85°C (+140…185°F): ±(0.5% x TD + 0.5%)
Smart and PROFIBUS-PA electronics:
– for –10°C…+60°C (+14…+140°F): ±(0.2% x TD + 0.2%)
– for –40°C…–10°C (–40…+14°F),
+60°C…+85°C (+140…185°F): ±(0.4% x TD + 0.4%)
Temperature coefficient (maximum TK)
– If the temperature coefficient level exceeds the
thermal change, then the thermal change
automatically becomes valid.
– Applies to transmitters without diaphragm seals or
capillary tubes, see also "Temperature Effects"
page 12.
Zero signal and span:
Analogue electronics:
– for –10…+60°C (+14…+140°F): ±0.15% of nominal value/10 K
– for –40…–10°C (–40…+14°F),
+60…+85°C (+140…185°F): ±0.2% of nominal value/10 K
Smart and PROFIBUS-PA electronics:
– for –10…+60°C (+14…+140°F): ±0.08% of nominal value/10 K
– for –40…–10°C (–40…+14°F),
+60…+85°C(+140…185°F): ±0.1% of nominal value/10 K
Vibration effects None (4 mm in path peak-to-peak 5…15 Hz,
2 g: 15…150 Hz, 1 g: 150 Hz…2000 Hz)
–1 0 0.4 +1
nominal value
set span***
measurement limits** +5%–5%*
extended measurement limits
Figure 1: extended measurement limits
* not with absolute pressure sensors or
with overpressure sensors with lower
measurement limit of –1 bar
** measurement limits, see page 15
Examples:
0…4 bar overpressure sensor:
extended measurement limits:
–0.2…4.2 bar
0…10 bar absolute pressure sensor:
extended measurement limits:
0…10.5 bar abs
Figure 2: Turn down
Explanation of terms:
Turn down (TD) =
nominal value / set span***
Example:
nominal value = 1 bar
set span*** = 0.4 bar
TD = 1 : 0.4
*** Calibrated span for instruments
with PROFIBUS-PA electronics
16

Process conditions Installation conditions Any position
Zero point shift due to position can be corrected,
see page 16, " Zero point increase and decrease"
Ambient conditions
Ambient temperature –40…+85°C (–40…+185°F)
For instruments approved for use in hazardous areas, see
Safety Instructions (XA…), Installation Drawing (CSA) or
Control Drawing (FM).
Ambient temperature range (temporary) –40…+100°C (–40…+212°F)
Storage temperature –40…+85°C (–40…+185°F)
Climatic class 4K4H to DIN EN 60721-3
Protection – IP 65: Instruments with Harting plug Han7D
– IP 66/Nema 4X: instruments with cable gland, cable entry
or M 12 plug (in combination with gauge pressure sensor)
– IP 68 (1m water over 24 h) or NEMA 6P (1.8 m water over
30 min): instruments with assembled cable or M 12 plug
(in combination with absolute pressure sensor)
Electromagnetic compatibility Interference Emission to EN 61326, Electrical Equipment
Class B, Interference immunity to EN 61326 Annex A
(Industrial) and NAMUR Recommendation EMC (NE 21)
Influence to EMC ≤0.5%
Smart and PROFIBUS-PA electronics: Twisted, screened
pairs must be used.
Process conditions
Process temperature Depending on maximum permissible temperature of filling
liquid of diaphragm seal and diameter of diaphragm
(see also page 12)
For instruments approved for use in hazardous areas, see
Safety Instructions (XA…), Installation Drawing (CSA) or
Control Drawing (FM).
Pressure specifications
The MWP (maximum working pressure) is specified on the nameplate. The value refers to a reference temperature of
20°C (68°F) or 100°F for ANSI flanges.
– Test pressure (over pressure limit OPL) = MWP (nameplate) x 1.5
– The pressure values permitted at higher temperatures can be found in the following standards:
EN 1092-1: 2001 Tab. 18; ASME B 16.5a – 1998 Tab. 2-2.2 F316; ASME B 16.5a – 1998 Tab. 2.3.8 N10276;
JIS B2201
The maximum pressure for the measuring device is dependent on the lowest-rated element with respect to pressure,
see following sections for this:
– permitted overload of the sensor, page 15, table "Measuring range"
– for process connections "Product structure" and "Dimensions", from page 19 onwards
Mechanical Construction Design
Housing Stainless steel (type F 15) with a surface roughness
Ra ≤0.8 µm or aluminium (type F 18)
Optional electrical connection via
– M 20 x 1.5 cable gland
– Cable entry G ½, ½ NPT,
– Harting plug (Han7D) or M 12x1 plug
– assembled cable with reference air feed
Process connections All common diaphragm seal versions, see "Product Structure"
and "Dimensions"
Materials
Housing – Stainless steel 1.4404 (AISI 316L) or
– cast aluminium housing with protective polyester based
powder coating
Nameplate Stainless steel housing
Aluminium housing
– Engraved on housing with laser
– 1.4301 (AISI 304)
Process connections (in contact with the medium) 1.4435 (AISI 316L)
Union nuts 1.4307 (AISI 304L)
Process diaphragm PMP 46
(in contact with the medium) PMP 48
– 1.4435 (AISI 316L)
– 1.4435 (AISI 316L), Hastelloy 2.4819 (C 276), tantalum,
PTFE film 0.09 mm (0.0035 in) on 1.4435 (AISI 316L) (not
for vacuum)
PTFE film 0.25 mm (0.0098 in) on 1.4435 (AISI 316L) (not
for vacuum)
O-Ring for Stainless steel housing
cover sealing Aluminium housing
– Silicone
– NBR
Bracket for pipe and wall mounting 1.4301 (AISI 304)
Filling fluid in diaphragm seals Silicone oil, vegetable oil (FDA listed), glycerine,
high-temperature oil, Fluorolobe (see also page 12)
17

Display and Operating Interface Display and Operation
Display Analogue
(optional)
Smart and PROFIBUS-PA
– Pluggable analogue display with bar graph
(Pressure display related to set measuring range as bar
graph with 30 segments)
– Pluggable digital display and extra bar graph
(Pressure display as four-digit number and also in relating
to set measuring range as bar graph with 28 segments)
Display resolution Analogue display
Digital display
– Bar graph: 1 segment equals 3.33% of the set measuring
range
– Digital display 0.1%
bar graph: 1 segment equals 3.57% of the set measuring
range
Operation Analogue
Smart
PROFIBUS-PA
– Lower range-value and upper range-value calibration using
two potentiometers and DIP switches on the instrument
– Lower range-value and upper range-value calibration using
two keys on the instrument
– Lower range-value and upper range-value calibration for
the bar graph using two keys on the instrument
For further setting options, refer to pages 7…9
Communication Interfaces
Handheld terminal HART protocol: Universal HART Communicator DXR 275,
The HART Communicator can be connected anywhere
along the 4…20 mA line,
minimum line resistance: 250 Ω
PC Connection via Commubox FXA 191 to a serial interface of a
PC
The commubox can be connected anywhere along the
4…20 mA line.
minimum line resistance: 250 Ω
Operating e.g. via Commuwin II operating program.
PROFIBUS-PA Connection via segment coupler connection to PLC or PC
with an operating program e.g. Commuwin II
Analogue and Smart Electronics
Power Supply Supply voltage – 11.5…45 V DC
– Ex ia: 11.5…30 V DC (Smart electronics only)
Overvoltage category II to DIN EN 61010-1
Ripple No effect for 4…20 mA signal up to ±5% residual ripple
within permissible range
With HART Communicator and Commubox:
max. ripple (measured on 500 Ω) 47…125 Hz:
UPP=200 mV
max. noise (measured on 500 Ω) 500 Hz…10 kHz:
Ueff=2.2 mV
PROFIBUS-PA Electronics
Supply voltage – 9…32 V DC
– Ex ia: 9…24 V DC, see also Safety Instructions (XA…),
Installation Drawing (CSA) or Control Drawing (FM).
Current consumption 11 mA ± 1 mA
Power up current Corresponds to table 4, IEC 61158-2
Certificates and Approvals Ignition protection see "Product Structure, Certificates"
CE Mark By attaching the CE Mark, Endress+Hauser confirms that
the instrument fulfils all the requirements of the relevant EC
directives.
Order Code see "Product Structure"
Supplementary Documentation Cerabar M System Information: SI 038P/00/en
Cerabar M Technical Information: TI 321P/00/en
Cerabar M with analogue electronics Operating Instructions: BA 200P/00/en
Cerabar M with Smart electronics Operating Instructions: BA 201P/00/en
Cerabar M PROFIBUS-PA Operating Instructions: BA 222P/00/en
PROFIBUS-DP/PA, Guidelines for planning and comissioning: BA 198F/00/en
ATEX II 1/2 G EEx ia IIC T4/T6 Safety Instructions: XA 039P/00
ATEX II 1/2 G EEx ia IIC T4/T6, PROFIBUS-PA Safety Instructions: XA 096P/00
ATEX II 2 G EEx ia IIC T4/T6 Safety Instructions: XA 130P/00
ATEX II 2 G EEx ia IIC T4/T6, PROFIBUS-PA Safety Instructions: XA 149P/00
ATEX II 3 G EEx nA II T5 Safety Instructions: XA 052P/00
ATEX II 1/2 D EEx ia IIC T4/T6 Safety Instructions: XA 038P/00
ATEX II 1/2 D EEx ia IIC T4/T6, PROFIBUS-PA Safety Instructions: XA 097P/00
ATEX II 1/3 D Safety Instructions: XA 040P/00
ATEX II 1/3 D PROFIBUS-PA Safety Instructions: XA 098P/00
EMC guidelines Technical Information: TI 241F/00/en
18

Product Structure
PMP 46 Cerabar M PMP 46
Certificates
R Standard
G ATEX II 1/2 G, EEx ia IIC T6
H ATEX II 2 G, EEx ia IIC T6
N ATEX II 3 G, EEx nA II T5
K ATEX II 1/2 D, EEx ia IIC T6
L ATEX II 1/3 D (non-Ex power supply)
C CSA General Purpose
S CSA IS (suitable for Div. 2) Cl. I, II, III, Div. 1, Groups A…G
T CSA, Cl. I, Div. 2, Groups A…D; Cl. II, III, Div. 1, Groups E…G
P FM IS (non-incendive) Cl. I, II, III, Div. 1, Groups A…G
M FM DIP, Cl. II, III, Div. 1, Groups E…G
V TIIS Ex ia IIC T6
Housing
Stainless steel 1.4404 (AISI 316L) Aluminium
E1 Cable gland M 20x1.5 E2 Cable gland M 20x1.5
G1 Cable entry G ½ G2 Cable entry G ½
C1 Cable entry ½ NPT C2 Cable entry ½ NPT
H1 Harting plug (Han7D) H2 Harting plug (Han7D)
L1 Plug M 12x1 L2 Plug M 12x1
K1 5 m cable (with pressure compensation) K2 5 m cable (with pressure compensation)
Metal Sensor: Nominal Value (Maximum Overload)
Gauge pressure
3H 0…1 bar (4 bar) 100 kPa (400 kPa) 15 psig (60 psig)
3M 0…4 bar (16 bar) 400 kPa (1.6 MPa) 60 psig (240 psig)
3P 0…10 bar (40 bar) 1 MPa (4 MPa) 150 psig (600 psig)
3S 0…40 bar (160 bar) 4 MPa (16 MPa) 600 psig (2400 psig)
Absolute pressure
4H 0…1 bar (4 bar) 100 kPa (400 kPa) 15 psia (60 psig)
4M 0…4 bar (16 bar) 400 kPa (1.6 MPa) 60 psia (240 psig)
4P 0…10 bar (40 bar) 1 MPa (4 MPa) 150 psia (600 psig)
4S 0…40 bar (160 bar) 4 MPa (16 MPa) 600 psia (2400 psig)
Negative gauge pressure
7H –1…+1 bar (4 bar) –100…100 kPa (400 kPa) –15…15 psig (60 psig)
7M –1…+4 bar (16 bar) –100…400 kPa (1.6 MPa) –15…60 psig (240 psig)
7P –1…+10 bar (40 bar) –0.1…1 MPa (4 MPa) –15…150 psig (600 psig)
Calibration and Technical Units
1 Calibrated nominal value mbar/bar
2 Calibrated nominal value kPa/MPa
3 Calibrated nominal value mm H2O/m H2O
4 Calibrated nominal value inch H2O
5 Calibrated nominal value kgf/cm2
6 Calibrated nominal value psi
B Calibrated from … to … technical unit … (bar, kPa, psi …)
9 Others
Electronics, Display
A Analogue 4…20 mA, without display C Analogue 4…20 mA, with analogue display
H HART 4…20 mA, without display J HART 4…20 mA, with digital display
P PROFIBUS-PA, without display R PROFIBUS-PA, with digital display
Accessories/Certification
1 None
2 Bracket for pipe and wall mounting
C 3.1.B Inspection certificate for all parts in contact with the medium made of 1.4435 (AISI 316L)
9 Others
Code for Process Connection See Page 20
Filling Fluid in Diaphragm Seal and Coupling of Diaphragm Seal
Notes on Code H, F, J: Capillary > 1 with diaphragm seals from DN 50 or 2" only
A Silicone oil, direct coupling
D Vegetable oil (FDA listed), direct coupling
E Glycerine, direct coupling
G High-temperature oil, with temperature spacer 100 mm (3.94 in)
K 1 m (3.28 ft) capillary tubing with high-temperature oil
H …m capillary tubing with high-temperature oil
F …m capillary tubing with vegetable oil
J …m capillary tubing with silicone oil
N Fluorolube, grease-free for oxygen service, direct coupling
Y Others
PMP 46 Product designation
19

in combination with diaphragm seals:
– Dairy DIN 11851,
versions AG, AH and AL as well as
PB, PH and PL
– Varivent, version LL
Note!
To meet the requirements of the EHEDG,
these instruments should be installed in
accordance with Hygienic Equipment
Design Criteria.
Dimensions
Housing
Diaphragm and Pipe Seal for Hygienic Applications
Material 1.4435 (AISI 316L)
Diaphragm seal
AG Dairy thread DIN 11851, DN 32, PN 40
AH Dairy thread DIN 11851, DN 40, PN 40
AL Dairy thread DIN 11851, DN 50, PN 40
DG Clamp, 1½", PN 40
DL Clamp, 2", PN 40
DU Clamp, 3", PN 40
EG SMS thread,1½", PN 40
EL SMS thread, 2", PN 40
FG RJT thread, 1½", PN 40
FL RJT thread, 2", PN 40
GG ISS thread, 1½", PN 40
GL ISS thread, 2", PN 40
KL DRD flange, D=65 mm
LL Varivent, type N for pipes DN 40…125
Pipe diaphragm seal
PB Dairy thread DIN 11851, DN 25, PN 40
PH Dairy thread DIN 11851, DN 40, PN 40
PL Dairy thread DIN 11851, DN 50, PN 40
SA Clamp, ¾", PN 40
SB Clamp, 1", PN 40
SG Clamp, 1½", PN 40
SL Clamp, 2", PN 40
YY Others
Code for process connection
125 (145 )
97 74
27 AF
Dimensions
•1 mm = 0.039 in
1 in = 25.4 mm
All dimensions are in mm.
135 (150)
117 74
27 AF
Housing
•
above: Stainless steel
1.4404 (AISI 316L)
below: Aluminium
•optional cover raised
(with display) or low
Values in brackets apply
to instruments with
raised cover.
Values in italics apply to
instruments with an
aluminium housing.
20