ARMANO PTPi User manual

www.armano-messtechnik.com
Operating Instructions
Process Pressure Transmitters PTPi and PTDi
B09-711
10/23
1. Information on This Operating Instruction
• The manual is aimed at specialists and semi-skilled
personnel.
• Please read the instructions carefully before carry-
ing out any operation and keep the specied order.
• Thoroughly read and understand the information in
chapter 2 “Safety Instructions”.
If you have any problems or questions, please contact
your supplier or contact us directly at:
ARMANO Messtechnik GmbH
Location Beierfeld
Am Gewerbepark 9 •08344 Grünhain-Beierfeld
Tel.: [phone] – 0 •Fax: [phone] – 545
[e-mail]
Location Wesel
Manometerstraße5 •46487 Wesel-Ginderich
Tel.: [phone] – 0 •Fax: [phone]
[email protected]
1. Information on This Operating Instruction 1
1.1 Pictographs Used 2
1.2 Exclusion of Liability 2
1.3 General Information 2
2. Safety Instructions 2
3. Device Description 3
3.1 Intended Use 4
4. Technical Data 4
4.1 PTPi, PTDi Common Parameters 4
4.2 PTPi – Pressure Ranges and
Metrological Parameters 5
4.3 PTDi – Pressure Ranges and
Metrological Parameters 7
4.4 PTPi, PTDi – Environmental Parameters 8
5. Construction 8
5.1 Measurement Principle,
Structure of the Electronic System 8
5.2 Pressure Transmitter Housing 9
5.3 Main Board with Display 9
5.4 Sensor Unit 9
5.5 Chemical Seal 9
6. Place of Installation 9
6.1 General Recommendations 9
6.2 Low Ambient Temperature 10
6.3 High Medium Temperature 10
6.4 Electrostatic Hazards 10
6.5 Mechanical Vibrations / Shocks,
Corrosive Media 10
7. Installation and Mechanical Connections 10
7.1 PTPi Installation and Connections 11
7.2 PTDi Installation and Connections 11
8. Electrical Connection 11
8.1 General Recommendations 11
8.2 Electrical Connections for PTPi, PTDi 12
8.3 Overvoltage Protection 12
8.4 Earthing 12
9. Settings and Regulation 12
Contents
9.1 Set Range, Nominal Measuring Range,
Denitions 12
9.2 Conguration and Calibration 13
9.3 Alarms 19
10. Maintenance/Cleaning, Storage and Transport 20
11. Dismounting and Disposal 20
12. CE Conformity 21
13. Figures 22
14. Declaration of Conformity 32

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Operating Instructions
Process Pressure Transmitters PTPi and PTDi
1.1 Pictographs Used
In this manual, pictographs are used as hazard warnings.
Particular information, instructions and restrictions
designed for the prevention of personal or substantial
property damage:
WARNING! Is used to warn you against an
imminent danger that may result in personal
injury or death.
IMPORTANT!Is used to warn you against
a possibly hazardous situation that may re-
sult in personal, property or environmental
damage.
CAUTION! Is used to draw your attention
to important recommendations to be ob-
served. Disregarding them may result in
property damage.
Passages in the text containing explana-
tions, information or advice are highlight-
ed with this pictograph.
The following symbol highlights
actions you have to conduct
or
instructions that have to be strictly observed.
1.2 Exclusion of Liability
We accept no liability for any damage or malfunction
resulting from incorrect installation, inappropriate
use of the device or failure to follow the instructions
in this manual.
1.3 General Information
Please inspect the transport packaging and the deliv-
ered goods immediately upon their receipt to deter-
mine their integrity and completeness.
You have purchased an instrument that was manu-
factured in a high quality standard in our company,
which is certied according to DIN ISO 9001. Should a
reason for complaint however arise, please return the
instrument with a precise description of faults to our
factory.
The process transmitter models PTPi and PTDi are
manufactured in accordance with the corresponding
valid standards. The following operating instruction
was composed with due care. It is not possible, how-
ever, to take into account all variants and possible
cases of application in this operating instruction. If you
have any questions regarding a special application, in-
struments, storage, mounting, operation or diculties,
please contact us as manufacturer or the distributor.
With special versions (labelling S on the nameplate),
please note the specications indicated on the deliv-
ery note.
Please support us in improving this operating instruc-
tion. We will gladly accept your advice.
2. Safety Instructions
Please read this operating instruction thoroughly be-
fore installing the device.
Disregarding the containing warnings, especially the
safety instructions, may result in danger for people,
the environment, and the device and the system it is
connected to.
The instrument corresponds with the state of engi-
neering at the time of printing. This concerns the ac-
curacy, the operating mode and the safe operation of
the device.
In order to guarantee that the device operates safely,
the operator must act competently and be conscious
of safety issues.
The ARMANO Messtechnik GmbH provides support
for the use of its products either personally or via rele-
vant literature. The customer veries that our product
is t for purpose based on our technical information.
The customer performs customer and application
specic tests to ensure that the product is suitable for
the intended use. With this verication, all hazards and
risks are transferred to our customers. Our warranty
expires in case of inappropriate use.

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Operating Instructions
Process Pressure Transmitters PTPi and PTDi
Qualied personnel:
• The personnel that is charged for the installation, op-
eration and maintenance of the instrument must hold
a relevant qualication. This can be based on training
or relevant tuition. The personnel must be aware of
this manual and have access to it at all times.
• The electrical connection shall be carried out by a
fully qualied electrician only.
General safety instructions:
• In all work, the existing national regulations for ac-
cident prevention and safety at the workplace must
be complied with. Any internal regulations of the op-
erator must also be complied with, even if these are
not mentioned in this manual.
• Degree of protection according to DIN EN 60529:
Ensure that the ambient conditions at the installa-
tion location do not exceed the requirements of the
specied degree of protection (chapter 4 “Tech-
nical Data”).
• Use the device in its perfect technical condition
only. Damaged or defective instruments need to be
checked immediately and replaced if necessary.
• Only use appropriate tools for mounting, connect-
ing and dismounting the device.
• Nameplates or other information on the device shall
neither be removed nor obliterated, since other-
wise any warranty and manufacturer responsibility
expires.
IMPORTANT! Disregarding the respective
regulations may result in severe personal
injuries and / or property damage.
In order to ensure measurement accuracy and dura-
bility of the instrument and to avoid damage, the limit
values (chapter 4 “Technical Data”) have to be ob-
served.
In case of visible damage or malfunctions, the instru-
ment must be put out of operation immediately.
All parts have to be protected against direct contact
during the installation of the instrument and the con-
nections.
Special safety instructions:
Warnings, which are specically relevant to individual
operating procedures or activities, are to be found at
the beginning of the relevant sections of this operating
instruction.
3. Device Description
The pressure transmitter is suitable for precisely
measuring and monitoring dierential pressures and
positive pressures of liquid as well as gaseous media.
A piezoresistive resistance silicon sensor, which is sep-
arated from the medium by the membrane and a spe-
cial manometric liquid, serves as measuring element.
The case is made of die-cast aluminum or stainless
steel 316 with degree of protection IP66.
It is equipped with an integrated LC display (adjust-
able horizontally / vertically) and can be rotated by
0 – 340° relative to the sensor. The SIL2 version is op-
tionally available. The mounting of chemical seals is
possible, e.g. for the petrochemical industry (mod-
el overview 7000 and the data sheets of heading 7,
e.g. data sheet 7500).
Each pressure transmitter has a nameplate con-
taining at least the following information: CE mark,
manufacturer name, transmitter type, serial number,
pressure range, static pressure limit, output signal,
supply voltage.
The nameplates of the PTPi and PTDi
transmitters in versions compliant with
the PED (pressure equipment directive)
contain the number of the notied body in
addition to CE mark, certicate number:
(H1), maximum permissible pressure PS,
test pressure PT, minimum/maximum per-
missible temperature TS.
The instrument version is indicated on the nameplate:

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Operating Instructions
Process Pressure Transmitters PTPi and PTDi
3.1 Intended Use
The PTPi pressure transmitters are designed to
measure gauge pressure, vacuum pressure and ab-
solute pressure of gases, vapours and liquids (includ-
ing corrosive substances).
The dierential pressure transmitter models PTDi are
used to measure liquids in closed vessels with static
pressure up to 25 MPa (32 MPa for special versions)
and to measure dierential pressures.
The transmitters can be equipped with a
number of process connections that allow
operation in e.g. corrosive, highly viscous
media or operation at high or low tempera-
tures.
In a 2-wire system, the PTPi and PTDi transmitters
generate a 4…20 mA output signal with superim-
posed HART signal. The use of intelligent (smart)
electronics enables the regulation of zero point, pres-
sure range, damping, square root extracted charac-
teristics and other functions using a HART communi-
cator or the PC conguration software.
4. Technical Data
4.1 PTPi, PTDi Common Parameters
Pressure
transmitter
version
Minimum
supply voltage
at the pressure
transmitter
Umin [V] DC
Maximum
supply voltage
at the pressure
transmitter
Umax [V] DC
normal 101) 55
Output signal: 4…20 mA + HART Rev 5.1
Communication with the transmitter to check its con-
guration parameters is carried out via HART trans-
mission protocol and a signal of 4…20 mA.
For the communication via HART protocol, the cur-
rent loop requires a certain minimum resistance.
This, together with the other resistances, must not
exceed the maximum total resistance.
Resistance necessary for communication (HART)
min. 240 Ω
The maximum values of the permissible Rmax load
resistance for the supply voltage of the power supply
unit (Usup [V] DC) shall be calculated based on the
following formula:
Rmax[Ω] = Usup [V] − Umin [V]
0.0225 [A]
If the Ro total load resistance in the current loop is
given, the minimum supply voltage (Usup[V] DC), re-
quired for the use of the power supply, can be calcu-
lated likewise.
Usup[V] = Umin[V] + 0.0225 [A] x Ro[Ω]
whereas: Rmax = maximum permissible load
resistance for a specic voltage
of the power supply
Ro = total resistance in the current
loop
Usup = supply voltage
Maximum length of the connection cable:
1500 m
Update time of the outputs:
16…480 ms (programmable)
Additional electronic damping:
0…60 sec
Materials
membrane stainless steel 316L
(1.4404 / 1.4435) (PED version)
or Hastelloy C276
sensor module stainless steel 316L (1.4404)
liquid lling within
the sensor module
silicone oil, chemically inactive
liquid for the measurement of
oxygen
process
connection for
PTPi
stainless steel 316L (1.4404)
or Hastelloy C276 only for P, GP,
CM 30x2
case die-cast aluminum alloy, coated
with chemical resistant oxide
enamel, or 316L (1.4404)
1) minimum supply voltage when the backlight is switched on (backlight cannot be switched o)

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Operating Instructions
Process Pressure Transmitters PTPi and PTDi
Degree of protection
IP66, 67 according to DIN EN 60529
IP65 according to DIN EN 60529
with PD plug connector
Accuracy depending on the set range
ρ0= error for nominal pressure range (0…100 % FSO)
ρ1= error for span (0…10 % FSO)
ρ1= 2x ρ0
4.2 PTPi – Pressure Ranges and Metrological
Parameters
Pressure ranges
Permissible ambient conditions
Ambient temperature
−40 / +85 °C
(for PED version in accordance with metrological
parameters according to PED version)
Medium temperature
−40 / +120 °C for direct measurement
(for PED version in accordance with metrological
parameters according to PED version)
above 120 °C measurement with a cooling
element or chemical seal
Compensated temperature range
−25 / +80 °C
−40 / +80 °C for special version
Relative humidity
max. 98 % with condensation
For pressure transmitters with chemical seals, the
permissible temperature and corrosive properties of
the medium depend on the type of chemical seal.
No. Nominal measuring range (FSO) Minimum set range Turn-
down
Max. overpressure
(without hysteresis)3)
10 –1000 bar 0 – 100 MPa4) 10 bar 1 MPa 100:1 1200 bar 120 MPa
20 – 600 bar 0 – 60 MPa 6 bar 600 kPa 100:1 1200 bar 120 MPa
30 – 300 bar 0 – 30 MPa2) 3 bar 300 kPa 100:1 450 bar 45 MPa
40 – 160 bar 0 – 16 MPa2) 1.6 bar 160 kPa 100:1 450 bar 45 MPa
50 – 70 bar 0 – 7 MPa2) 0.7 bar 70 kPa 100:1 140 bar 14 MPa
60 – 25 bar 0 – 2.5 MPa2) 0.25 bar 25 kPa 100:1 50 bar 5 MPa
70 – 7 bar 0 – 0.7 MPa2) 0.07 bar 7 kPa 100:1 14 bar 1.4 MPa
8−1 / +7 bar −100 /+700 kPa2) 0.07 bar 7 kPa 114:1 14 bar 1.4 MPa
9−1 / +1.5 bar −100 /+150 kPa2) 0.12 bar 12 kPa 20:1 4 bar 400 kPa
10 0 – 2 bar 0 – 200 kPa2) 100 mbar 10 kPa 20:1 4 bar 400 kPa
11 0 – 1 bar 0 – 100 kPa2) 50 mbar 5 kPa 20:1 2 bar 200 kPa
12 −0.5 / +0.5 bar −50 / +50 kPa2) 50 mbar 5 kPa 20:1 2 bar 200 kPa
13 0 – 0.25 bar 0 – 25 kPa2) 25 mbar 2.5 kPa 10:1 1 bar 100 kPa
14 −100 /+100 mbar −10 / +10 kPa2) 20 mbar 2 kPa 10:1 1 bar 100 kPa
15 −15 / +70 mbar −1.5 / +7 kPa1)2) 5 mbar 0.5 kPa 17:1 0.5 bar 50 kPa
16 −25 / +25 mbar1)2) −2.5 / +2.5 kPa 2 mbar 0.2 kPa 25:1 1 bar 100 kPa
17 −7 / +7 mbar1)2) −0.7 / +0.7 kPa 1 mbar 0.1 kPa 14:1 1 bar 100 kPa
18 0 – 1.3 bar abs 0 – 130 kPa abs 100 mbar abs 10 kPa abs 13:1 2 bar 200 kPa
19 0 – 7 bar abs 0 – 0.7 MPa abs 100 mbar abs 10 kPa abs 70:1 14 bar 1.4 MPa
20 0 – 25 bar abs 0 – 2.5 MPa abs 0.25 bar abs 25 kPa abs 100:1 50 bar 5 MPa
21 0 – 70 bar abs 0 – 7 MPa abs 0.7 bar abs 70 kPa abs 100:1 140 bar 14 MPa
22 0 – 300 bar abs 0 – 30 MPa abs 3 bar abs 300 kPa abs 100:1 450 bar 45 MPa
1) pressure transmitter not available with chemical seal
2) transmitter available only as ultra-stable (HS) version, not available with SIL2
3) overpressure limit may vary for the version according to PED standard
4) 0 – 700 bar for pressure transmitters with ⁄" NPT-M process connection

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Operating Instructions
Process Pressure Transmitters PTPi and PTDi
Metrological parameters
Accuracy
≤ ±0.075 % of the calibrated range
0.1 % for range no. 16
special version
≤ ±0.05 % of the calibrated range
Long-term stability
≤ accuracy / 3 years (for nominal measuring range)
or
≤ 2x accuracy / 5 years (for nominal measuring range)
ultra-stable (HS) version
≤ accuracy for 6 years
Error due to supply voltage change
max. ±0.002 % (FSO) / 1 V
Thermal error
≤ ±0.05 % (FSO) / 10 °C
max. ±0.1 % FSO) / 10 °C for ranges no. 13, 14, 16
Thermal error for the compensation range
max. ±0.25 % (FSO)
max. ±0.4 % (FSO) for ranges no. 13, 14, 16
Metrological parameters according to PED version
PTPi transmitters in the versions according to the
pressure equipment directive PED can be manufac-
tured with a pressure range from −1 / +400 bar vacu-
um and overpressure, 0 – 400 bar absolute pressure
and an overload limit of PS = 440 bar.
Temperature limit:
for options according to H1 modules
TS min. / max.: −40 °C and +100 °C
Process connections
• M-type connection with M 20x1.5 thread
gure 5a, available for PED version
• P-type connection with M20x1.5 thread
gure 6a, available for PED version
• CM 30x2 plug with ush welded membrane
gure 7a
• G connection with G ⁄" thread
gure 8a, available for PED version
• GP connection with G ⁄" thread,
available for PED version
• CG connection with G 1" thread ush welded
membrane gure 8e, available for PED version
• RM connection with M 20x1.5 thread and
cooling element
• RP connection with M 20x1.5 thread and
cooling element
• G connection with G ⁄" thread,
available for PED version
• other connection types upon request
Limitation of the maximum measuring
range up to 70 MPa for transmitters with
⁄" NPT-M connections for male threads
⁄" NPT.
The limitation does not apply to the
female threads G ⁄".

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Operating Instructions
Process Pressure Transmitters PTPi and PTDi
Pressure ranges
No. Nominal measuring range (FSO) Minimum set range Turn-
down
Max.
overpressure
Max.
static pressure
10 – 70 bar 0 – 7 MPa 7 bar 700 kPa 10:1
C-type: 250, 320, 420 bar
(PS = 275 bar for PED version)
(P-type: 40 bar)
20 – 16 bar 0 – 1.6 MPa 0.16 bar 160 kPa 10:1
30 – 2.5 bar 0 – 250 kPa 0.2 bar 20 kPa 12.5:1
40 – 1 bar1) 0 – 100 kPa 50 mbar 5 kPa 20:1
50 – 0.25 bar1) 0 – 25 kPa 10 mbar 1 kPa 25:1
6−0.5 / +0.5 bar1) −50 / +50 kPa 0.1 bar 10 kPa 10:1
7−100 /+100 mbar1) −10 / +10 kPa 10 mbar 1 kPa 20:1
8−5 / +70 mbar1) −0.5 / +7 kPa 4 mbar 0.4 kPa 18:1
9−25 / +25 mbar1) −2.5 / +2.5 kPa 2 mbar 0.2 kPa 25:1 C-type: 200 bar; P-type: 40 bar
10 −7 / +7 mbar2) −0.7 / +0.7 kPa 1 mbar 0.1 kPa 14:1 20 bar
Permissible ambient conditions
Ambient temperature
−25 / +85 °C
(for PED version in accordance with metrological
parameters according to PED version)
special version
−40 / +85 °C
Medium temperature
−25 / +120 °C for direct measurement
(for PED version in accordance with metrological
parameters according to PED version)
above 120 °C measurement with a transmis-
sion tube or chemical seal
Compensated temperature range
−25 / +80 °C
Relative humidity
max. 98 % with condensation
For pressure transmitters with chemical seals, the per-
missible temperature and corrosive properties depend
on the type of chemical seal.
Metrological parameters
Accuracy
≤ ±0.075 % (FSO) of the calibrated range
≤ ±0.1 % (FSO) for range no. 10
special version
≤ ±0.05 % of the calibrated range
Long-term stability
≤ accuracy / 3 years
or
≤ 2x accuracy / 5 years
ultra-stable (HS) version
≤ accuracy for 6 years
Error due to supply voltage change
±0.002 % (FSO) / 1 V
Thermal error
≤ ±0.05 % (FSO) / 10 °C for ranges no. 1 – 9
≤ ±0.08 % (FSO) / 10 °C for range no. 10
≤ ±0.25 % (FSO) for the entire compensation range
special version
≤ ±0.03 % (FSO) / 10 °C for ranges no. 1 – 9
≤ ±0.1 % (FSO) for the entire compensation range,
ranges 1 – 9
Zero shift error for static pressure3)
±0.06 % (FSO) / 10 bar for ranges no. 1, 2
±0.01 % (FSO) / 10 bar for ranges no. 3, 4, 5, 6, 7, 9
±0.03 % (FSO) / 10 bar for range no. 8
±0.02 % (FSO) / 10 bar for range no. 10
±0.01 % (FSO) / 10 bar for ranges no. 2, 8
as ultra-stable (HS) version
Cutting-o the square root extracted characteristics
up to 10 % of the ow
Metrological parameters according to PED version
PTDi transmitters in the versions according to the pres-
sure equipment directive PED can be manufactured
with a pressure range −1/ +250 bar, a max. static pres-
sure of 250 bar and an overpressure of PS = 275 bar.
Temperature limit:
for options according to H1 modules
TS min. / max.: −25 °C and +100 °C
1) also available as ultra-stable (HS) version
2) only available as ultra-stable (HS) version
3) the error can be corrected by resetting the pressure transmitter
under static pressure conditions
4.3 PTDi – Pressure Ranges and Metrological Parameters

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Operating Instructions
Process Pressure Transmitters PTPi and PTDi
Process connections
PTDi connection type C for mounting with a manifold
(g. 9), available for PED version.
PTDi with single direct chemical seal as in the exam-
ple (g. 11) or with other chemical seals according to
chemical seal specication.
4.4 PTPi, PTDi – Environmental Parameters
Electromagnetic compatibility (EMC), stability
criterion according to EN 61326-1,2
Electrostatic discharge (ESD):
EN 61000-4-2
level 3,
±6 kV contact
±8 kV air
criterion A
Conducted radio frequency:
EN 61000-4-6
0.15…80 MHz, 10 V
criterion A
Radiated electromagnetic eld:
EN 61000-4-3
80…2000 MHz - 10 V/ m
…2700 MHz - 1 V / m
criterion A
Electrical fast transient (burst):
EN 61000-4-4
±1 kV
criterion A
Electrical slow transient (surge):
EN 61000-4-5
±1 kV
criterion B
Electromagnetic compatibility, interference
emission
criterion according to CISPR 16-1, CISPR 16-2,
class B
Radiated emission:
distance from the antenna: 3 m
quasi-peak values:
0.15…30 MHz, 80 – 52 dBµV/ m;
30…2000 MHz, < 54 dBµV / m
Conducted emission:
quasi-peak values:
0.01…0.150 MHz, 96 – 50 dBµV/ m;
0.150…0.350 MHz, 60 – 50 dBµV/ m;
0.35…30 MHz, < 50 dBµV / m
Climatic immunity
Temperature:
EN 60068-2-1, EN 60068-2-2
hot: T = 55 °C, RH = max. 55 %
cold: T = −25 °C
Damp heat cycle:
EN 60068-2-30
(T = 55 °C, RH = min. 95 %, 24 h) x 2
Salt mist:
5 % NaCl, pH 6.5…7.2 at 20 °C
T = 40 °C, RH = min. 93 %, 28 days
Mechanical strength
Shocks:
EN 60068-2-27
50 g / 11 ms
Sinusoidal vibrations:
EN 60068-2-6, test Fc
up to 1.6 mm, 2…25 Hz
up to 4 g for 25…100 Hz tun
Insulation strength
550 V AC or 750 V DC, 1 min.
Ex, marine
75 V AC or 110 V DC, 1 min.
normal, PED
Degree of protection
DIN EN 60529
IP66, 67
5. Construction
5.1 Measurement Principle,
Structure of the Electronic System
The signal, which is proportional to the pressure,
and the temperature of the measuring element are
digitised and transmitted to the main module via an
optoelectronic isolator. The main module calculates
the exact pressure and temperature values from the
measured values and indicates them on the LCD
module. It also generates an analogue 4…20 mA cur-
rent output signal as well as a digital signal accord-
ing to HART standard, superimposed on the current
signal. The electrical output is equipped with a noise
lter and an overvoltage protection. Fig. 1 shows a
block diagram of the pressure transmitter.

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Operating Instructions
Process Pressure Transmitters PTPi and PTDi
5.2 Pressure Transmitter Housing
The cases of PTPi, PTDi pressure transmitters are
made of die-cast aluminum or stainless steel and
consist of a body and two screw covers (display and
electrical connection). One of them is equipped with
a glass window. The case has two openings for the
cable entries with thread M 20x1.5 or ⁄" NPT (the
unused opening is closed with blind plugs). The case
consists of two chambers connected by an electrical
bushing. The case is equipped with internal and ex-
ternal ground terminals.
5.3 Main Board with Display
The main board and the display are placed in a poly-
carbonate case. It is inserted into the larger of the
two chambers. The display can be rotated 345° in 15°
steps. In the second chamber is a connection board
with protective devices and EMC lters.
5.4 Sensor Unit
The sensor unit contains a piezoresistive pressure
sensor, which is connected to an analogue/ digi-
tal transmitter via a glass feed-through. The sensor
is separated from the medium by a membrane. The
pressure is transferred to the sensor via a lling liq-
uid. The sensor units have a process connection as
shown in g. 5a, 6a and 7a. The dierential pressure
sensor units have two process connections type P or
C as shown in g. 9.
5.5 Chemical Seal
For the pressure measurement of viscous, chemical-
ly reactive or hot process media, the transmitter can
additionally be equipped with various types of chem-
ical seals.
The chemical seal transmits the process pressure
via an internal liquid lling between the membrane of
the chemical seal and the membrane of the pressure
transmitter. Chemical seals can also be connected to
the process spatially separated from the measuring
instrument. The pressure is then transmitted via cap-
illary line.
6. Place of Installation
6.1 General Recommendations
The intelligent pressure and dierential pressure
transmitters can be installed both indoors and out-
doors. We recommend mounting pressure transmit-
ters for outdoor use in an additional housing or under
a cover.
The place of installation should be selected to allow
access to the device and to protect it against mechan-
ical damage. When planning the installation of the
pressure transmitters and conguring the impulse
lines, the following requirements have to be met:
• The impulse lines should be as short as possible,
with a suciently large cross-section and free of
sharp bends to avoid clogging;
• If the medium is a gas, the pressure transmitters
should be installed above the process opening so
that condensate ows down towards the process.
If the medium is a liquid or if a separating liquid is
used, the pressure transmitters should be installed
below the process opening where the pressure
measurement is carried out.
• The impulse lines should be inclined at least 10 cm /m;
• The levels of the lling uid in the impulse lines
should be the same the dierence should be kept
constant.
• The impulse lines and the valve connection system
should be designed with regard to the measuring
conditions and requirements, such as accessibility
to the transmitter or points for sampling or ushing.
If there is a risk that the pressure trans-
mitter may be damaged by external me-
chanical inuences (in extreme cases,
this may result in the transmitter being
disconnected from the connecting lines,
allowing leakage of the medium), appro-
priate protective measures should be
taken for safety reasons and to avoid
damage, including ying sparks. If the
transmitter cannot be protected prop-
erly, an alternative installation location
should be sought.
Please also regard possible installation errors, which
can lead to measuring errors, e.g. non-tight connec-
tions, sediment clogging in lines that are too small, gas
bubbles in a liquid line or liquid column in a gas line.

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Operating Instructions
Process Pressure Transmitters PTPi and PTDi
6.5 Mechanical Vibrations / Shocks,
Corrosive Media
The pressure transmitters should work properly with
vibration amplitudes up to 1.6 mm and accelerations
up to 4 g. If strong vibrations are transmitted via the
pressure line and disturb the measurement, elastic
impulse lines or transmitters with a chemical seal and
capillary line should be used.
The pressure transmitters should not be
installed in places where the membrane,
made of stainless steel 316L (1.4404 /
1.4435), would be exposed to the risk of
corrosion due to the medium. If possible,
use transmitters with membranes made
of Hastelloy C276 or use other protective
means (e.g. by using a separating liquid
or transmitters with chemical seal for the
measurement of aggressive media).
7. Installation and Mechanical Connections
Pressure transmitters with ⁄" NPT thread
can be supplied with mounted transport
plugs instead of plug and screwed cable
gland.
In this case, remove the transport plugs
and install the corresponding cable gland
and plug before installing the transmitter.
The PTPi, PTDi pressure transmitters can be operat-
ed in any position.
When mounting on an object with a high-
temperature medium, it is recommended
to install the transmitter in a horizontal or
downwards position so that the transmit-
ter is kept away from the rising hot air.
For the small pressure ranges, the meas-
ured value can be inuenced by the trans-
mitter position, by the conguration of the
impulse lines or by the way they are lled
with liquid. This error can be corrected us-
ing the zero-setting function.
6.2 Low Ambient Temperature
Suitable measures here can be, for exam-
ple, the use of a separating liquid mixed
with an antifreeze agent or thermal insula-
tion of the exposed parts. At very low tem-
peratures, a heating for these parts should
be considered.
This is particularly important for outdoor installations.
Protection is achieved by lling the impulse lines
with a mixture of ethylene glycol and water or anoth-
er liquid whose solidication point does not exceed
the ambient temperature. The thermal insulation can
protect the housing and the lines of the transmitter
from temporary low temperatures only. If the temper-
atures are very low, the transmitter and impulse lines
should be heated.
6.3 High Medium Temperature
With the PTPi, PTDi transmitters, media with temper-
atures up to 120 °C can be measured (PED version
chapter 4 “Technical Data”).
To protect the sensor module from temperatures
higher than 120 °C, long impulse lines are used to
dissipate the heat and reduce the temperature of the
sensor module.
If it is not possible to use impulse lines with the re-
quired length, the transmitters PTPi, PTDi should be
used with chemical seals.
6.4 Electrostatic Hazards
Paint on the housing, plastic nameplates and Tef-
lon on the chemical seal are non-conductive layers
on conductive surfaces. Pressure transmitters with
these surfaces should not be installed in areas with
dust explosion risks, but in areas without the possibil-
ity of electrostatic charging, especially through con-
tact with electrically conductive dust.