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.

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Operating Instructions
Process Pressure Transmitters PTPi and PTDi
7.1 PTPi Installation and Connections
The PTPi transmitters can be mounted directly on rig-
id impulse lines.
For the various process connections with thread
spigot, suitable screw holes must be used (g. 5a
to 8e and DIN EN 837-1).
Suitable adapters are also available for process con-
nections for hygienic applications (e.g. clamps).
Sealings are available for every pressure transmitter
with connection types P, CM 30x2, CG1, CG ⁄ and GP.
The sealing material is selected on the basis of pres-
sure, temperature and type of medium.
Screw the pressure transmitters with a torque suita-
ble for the seal type and the measured pressure.
Using gauge holder brackets, the PTPi pressure
transmitter can be installed on walls or on horizontal
or vertical pipes.
7.2 PTDi Installation and Connections
The PTDi transmitters can be mounted directly on
rigid impulse lines.
To install the basic version of the pressure transmit-
ter, two M 20x1.5 connections (P-type connection)
are necessary, e.g. straight C-type connecting ele-
ments with nuts. If elastic impulse lines are used, the
pressure transmitter should be additionally fastened
to a pipe, panel or supporting construction.
The PTDi can be installed on a Ø 25 mm pipe using a
Ø 25 mm fastener or on a at surface using an angle
bracket (g. 11).
The device must not be pressurised un-
til it has been ensured that the pressure
range and the seals of the device are
suitable for the process pressure, that
the seals are installed correctly and that
the process connections are tightened
properly.
Attempts to loosen the screws or to fas-
ten the connecting tubes to a transmit-
ter under pressure may cause the me-
dium to leak and cause hazards for the
personnel.
When disassembling the pressure trans-
mitter, it is necessary to separate it from
the process pressure or to reduce the
pressure to atmospheric level and to
take particular care and precautions
with media that are highly reactive, cor-
rosive, explosive or in any other way dan-
gerous for the personnel.
If necessary, rinse this part of the system.
Pressure transmitters with ange-type
chemical seal have to be installed on the cor-
responding counter anges of the system.
It is recommended that the user adapts
the material of the ttings to the pressure,
temperature, ange material and seal to
ensure tightness of the ange connection
in the expected operating conditions.
For the anges in the transmitters PTPi,
PTDi, please use screws according to
ISO 261.
8. Electrical Connection
8.1 General Recommendations
We recommend using twisted pair cabling for the
signal lines. If pressure transmitter and signal cable
are exposed to strong electromagnetic interference,
shielded twisted pair cables should be used. The sig-
nal lines must not run next to power supply cables or
near large electrical consumers.
The devices used together with the pressure trans-
mitters should be resistant to electromagnetic in-
terference from the transmission line in accordance
with the compatibility requirements. It is also advan-
tageous to use noise lters on the primary side of the
transformers, the power supplies for the transmitters
and devices used in conjunction with them.
Moisture or rising dampness within the
pressure transmitter can cause damage.
Cable glands must be installed in such a
way that the degree of protection IP66 is
maintained. Avoid water running in the di-
rection of the cable entry.

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Operating Instructions
Process Pressure Transmitters PTPi and PTDi
8.2 Electrical Connections for PTPi, PTDi
The PTPi, PTDi transmitters must be con-
nected as shown in g. 2a – 2d.
In PTPi, PTDi transmitters, a 240 Ω resistor
is permanently tted in series in the trans-
mitter’s circuit and short-circuited with a
jumper between <SIGNAL−> and <TEST−>
as shown in g. 2a and 2b. If the resistance
in the current loop is smaller than 240 Ω,
the jumper must be disassembled to ena-
ble HART communication.
8.3 Overvoltage Protection
The pressure transmitters can be damaged due to
overvoltages caused by connection errors or atmos-
pheric electrical discharge.
Protection against overvoltage between the wires
of the transmission line is provided by TVS diodes,
which are installed in all pressure transmitter types
(table, column 2).
1 2
Type of
pressure transmitter
Protection between wires
(TVS diodes)
nominal voltage
PTPi, PTDi 68 V DC
8.4 Earthing
The transmitters are equipped with internal and ex-
ternal ground terminals.
9. Settings and Regulation
PTPi, PTDi pressure transmitters are factory calibrated
to the range specied in the order or to the basic range.
After installation, the transmitter's zero point may
shift and require adjustment.
This applies especially in cases where the measuring
range is small, the impulse lines are lled with a sepa-
rating liquid or when PTPi, PTDi transmitters are used
with chemical seals and capillary line.
9.1 Set Range, Nominal Measuring Range,
Denitions
The maximum pressure or dierential pressure range,
which can be measured by the pressure transmitter, is
called “nominal measuring range” (chapter 4 “Tech-
nical Data” specication of the pressure ranges).
The span of the nominal measuring range is the dif-
ference between upper and lower limits of the nomi-
nal measuring range.
The internal characteristic conversion curve for the
nominal measuring range is saved in the memory of
the pressure transmitter. This is the reference curve
used when making any adjustments that aect the
output signal of the pressure transmitter.
When the transmitter is used, the term “set range” is
used. The set range is the range, whose lower endpoint
corresponds to an output current of 4 mA and whose
upper endpoint corresponds to a current of 20 mA (or
20 mA and 4 mA with inverted conversion curve).
The set range can cover the entire nominal measur-
ing range or only a part of it.
The width of the set range is the dierence between
its upper and lower endpoint.
Within the nominal measuring range of the pressure
values, the pressure transmitter can be set to any
measuring range, subject to the limitations listed in
the table in chapter 4.

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Operating Instructions
Process Pressure Transmitters PTPi and PTDi
9.2 Conguration and Calibration
The pressure transmitter has functions for setting
and changing metrological and identication param-
eters. The congurable metrological parameters that
aect the output current of the transmitter include:
• unit in which the measured pressure is expressed
on the display
• upper endpoint of the set range
• lower endpoint of the set range
• time constant
• type of characteristic curve: linear or square root
extracted
Parameters of an informational nature, which cannot
be changed, are:
• upper limit of the nominal measuring range
• lower limit of the nominal measuring range
• smallest adjustable range (minimum range)
Other identication parameters that do not aect the
output signal are: device address, device type code,
factory identication code, factory device code, num-
ber of preambles (3 – 20), UCS, TSD, program version,
electronics version, ags, serial number, label tag,
description tag, date tag, message, record number,
sensor module number.
It is possible to carry out a “zeroing procedure”, e.g. to
compensate for the measurement deviation caused
by a position change during the device installation.
The pressure transmitter can also be calibrated by
measuring the input pressure with a standard device.
These process and zero point adjustments are called
“calibration”.
The pressure transmitters are congured and cali-
brated using a factory-owned communicator, HART
communicators or a PC with HART / RS-232 interface
and an own conguration software.
Together with the conguration software, an “INTER-
VAL LINEARISATION” software is supplied to enable
the input of a non-linear characteristic curve with 21
data points to the pressure transmitter.
Transmitter conguration using the buttons on the
device and the local menu
Local menu structure. Local conguration of the
pressure transmitters.
When the local conguration option is enabled, the
operator can change the pressure transmitter settings
using the buttons below the display. These buttons
can be accessed after opening the display cover. Then,
you can also change the display position (g. 4).
When the local conguration option is enabled, the
operator can change the pressure transmitter set-
tings using the buttons below the display.
To enter changes in the local setting mode, press
and hold one of the buttons for about 4 seconds. If
the message ERR_L16 is displayed after pressing the
button, the local conguration of the pressure trans-
mitter is disabled.
The HART communicator or a PC must be used for
switching on (HART command 132, 133).
The buttons are marked with the following symbols:
[] [] []
After pressing any of the buttons for 4 seconds, the
menu item: “EXIT” appears in the display.
If you conrm this message by pressing and holding
the button [] for 1 sec, you exit the menu “Setting”.
You can navigate in the menu as follows.
Press the button [] to scroll up.
Press the button [] to scroll down.
Press the button [] to conrm the selection and to
make changes.
If you do not perform any operation in the menu for
more than 2 minutes, the menu is automatically ex-
ited and the display returns to the indication of the
process variable.

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Operating Instructions
Process Pressure Transmitters PTPi and PTDi
The menu structure of the PTPi and PTDi is shown below:
The selected unit should be conrmed by pressing the button [].
After conrming the parameter, the pressure transmitter conrms acceptance of the command with the mes-
sage “DONE” or reports the error number. With the command “BACK”, you enter to the higher menu level.

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Operating Instructions
Process Pressure Transmitters PTPi and PTDi
Descriptions:
Local Menu Submenu Information
EXIT return from the local menu to normal operation of the pressure transmitter
PVZERO pressure zero adjustment
SETLRV
set the lower measuring value (no change of the measuring range)
BYPRES set by the pre-set pressure
BYVALU set by entering a number; the current value is indicated and you enter the editing mode
+ / − ______
select and conrm the sign of the value to be entered. Select, one digit after the other, a
5-digit number with or without decimal point; after conrming the last digit, the device
conrms the acceptance of the entry with the message “DONE” or reports an error number;
the unit of the value is selected in “UNIT”
SETURV set the upper measuring value (change of the measuring range)
UNIT
menu process variable units
IN_H2O inch of water at a temperature of 20 °C (68 °F)
IN_HG inch of mercury at a temperature of 20 °C (68 °F)
FT_H2O foot of water at a temperature of 20 °C (68 °F)
MM_H2O mm of water at a temperature of 20 °C (68 °F)
MM_HG mm of mercury at a temperature of 0 °C (32 °F)
MBAR millibar
G/SQCM gram per square centimetre
KG/SQCM kilogram per square centimetre, technical atmosphere
KPA kilopascal
TORR torr (mmHg)
ATM physical atmosphere
M_H2O meter of water at a temperature of 4 °C (39.2 °F)
MPA megapascal
INH2O4 inch of water at a temperature of 4 °C (39.2 °F)
MMH2O4 mm of water at a temperature of 4 °C (39.2 °F)
DAMPIN set the damping
TRANSF
set the type of output current characteristic
LINEAR linear
SQRT square root extracted
SPECIA user-specic
SQUARE square
% SQRT square root extracted characteristic with setting of the switch-o point
LCD 1 VR
assign a process variable indicated on LCD 1
CURREN LCD 1 indicates the current (in mA) in the current loop
PERCEN LCD 1 indicates the percentage value of the output signal – in %
LCD 2 VR
assign a process variable indicated on LCD 2
PRESS LCD 2 indicates the pressure value
USER LCD 2 indicates the units of the user; the scaling of the user range and record of the user units
can be carried out using a computer or communicator, see HART command no. 244.245
SENS_T LCD 2 indicates the current temperature of the pressure sensor
CPU_T LCD 2 indicates the current temperature of the transmitter CPU – in °C
LCD 2 DP
set the position of the decimal point on LCD 2; if the value to be displayed on LCD 2 cannot
be indicated properly due to the position of the decimal point, it is indicated by four ashing
dots • • • •; in this case, enter the local menu setting and move the decimal point to the right
FACTOR reset to factory settings (please note: current and pressure calibration will be deleted)
RESET reboot of the pressure transmitter
MID_WP
lock the recording/ change of parameters related to the transmitter metrology
ON activation of the lock
OFF deactivation of the lock

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Operating Instructions
Process Pressure Transmitters PTPi and PTDi
Local menu, reporting errors
When executing some functions in the local menu, a
message may appear on the LCD 2 screen. The error
message indicates that a command in the local menu
has not been executed.
A brief description of the messages is given below:
ERR_L07
[in_write_protected_mode] This error occurs when
an attempt is made to change the settings in the local
menu and the transmitter is protected.
To properly change the settings using the local menu,
in the pressure transmitter the support for the local
menu has to be enabled and the write protection has
to be disabled. These parameters can be changed us-
ing the HART communicator or the PC conguration
software.
Default setting:
• local menu support enabled
• write protection disabled
ERR_L09
[applied_process_too_high] This error occurs when
certain parameters (pressure) are too high. Zero ad-
justment or a check of the settings is necessary.
ERR_L10
[applied_process_too_low] This error occurs when
certain parameters (pressure) are too low. Zero ad-
justment or a check of the settings is necessary.
ERR_L14
[span_too_small] This error occurs when the measur-
ing range is smaller than permissible due to a change
of the set range.
ERR_L16
[acces_restricted] This error occurs when the local
menu of the pressure transmitter is disabled and the
user tries to access the local menu support. Please
enable the local menu via HART communicator or PC
conguration software.
Warning! ERR_L16 can also occur when trying to zero
the absolute pressure transmitter.
WNG_L 14
[WARNING! New Lower Range Value Pushed!] This
error occurs when the change of the set upper range
value (URV) will cause a change of the set lower range
value (LRV).
Local LC display
Changes of the indication options in the local menu
can be made with the buttons, the HART communica-
tor or the PC software. If required, it is also possible
to switch o the indication. The function “Display o”
is only available with the HART communicator or PC
software.
The PTPi, PTDi transmitter indication:
There, 3 main indications are visible:
LCD 1
The current or percentage indication of the pre-set
range. According to the indication conguration, the
current value in 4…20 mA current loop or the percent-
age value of the output signal will be displayed.
LCD 2
Field for indicating the digital value measured by the
pressure sensor, re-scaling the values according to
process variable unit or user unit, as well as sensor
temperature (medium), CPU temperature (ambient),
menu messages and other alarm and information
messages. When displaying the digital pressure val-
ue and the scaled pressure value, the indication can
be preceded by a “−” sign. The position of the decimal
point can be set in the local menu, via HART commu-
nicator or PC conguration software. The PTPi, PTDi
transmitters allow the re-scaling of the pressure val-
ues to user specic units. Enter those values into the
PC software that correspond to the beginning and
the end of the set range and select the name of the
unit. After activating the user mode, the scaled value
is indicated in the display.
LCD 3
Information eld. During standard operation, it is
intended for continuous indication of the pressure
transmitter's basic unit or of the user unit. If errors
occur during operation of the pressure transmitter,
here also the error number is displayed. In the local
menu operation mode it indicates the setting selec-
tion options. It is also used to indicate errors related
to the execution of commands in the local change of
settings menu.

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Operating Instructions
Process Pressure Transmitters PTPi and PTDi
The local display is equipped with a background lighting.
Figure 4 shows how to change the display position by
rotation.
Warning! Exceeding the nominal meas-
uring range of the pressure transmitter
by 50 % upwards or downwards is indi-
cated by “o u E r” or “u n d E r” in LCD 2.
Such a situation most often occurs when
a dierential pressure transmitter is
overloaded, when a blockage or leakage
in one of the capillaries is caused by the
static pressure, which is large compared
to the pressure range.
After conguration it is important to
protect the transmitters with the HART
command [247]. During operation, the
pressure transmitter should be protect-
ed against changes. This prevents ac-
cidental or intentional changes to the
conguration data. The protection func-
tion can be accessed via HART commu-
nicator or PC conguration software, as
well as by using the DD or DMT program
libraries.
Remote conguration
Remote conguration is possible via HART commu-
nicator or PC conguration software. The measuring
circuit should comply with g. 2.
Conguration of the PTDi pressure transmitter for
ow measurement with an orice plate
It is important to position the transmitter properly,
depending on the type of medium to be measured,
otherwise this may have negative eects on the
measurement.
Mounting diagram for liquid and vapour ow:
The pressure transmitter should be located below
the pipeline. This prevents the formation of air bub-
bles in the connecting line.
Mounting diagram for gas ow:
The pressure transmitter should be located above
the pipeline. This allows condensate to ow into the
pipeline.
Function describing the relationship between mass
ow and pressure dierence:
Function describing the relationship between volume
ow and pressure dierence:
ρ – density of the medium
∆p – dierential pressure

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Operating Instructions
Process Pressure Transmitters PTPi and PTDi
Orice ow meters are based on the square root out-
put signal of the dierential pressure transmitters.
For ow measurement, you should:
Æinstall the PTDi pressure transmitter on the ow
measurement station with orice plate;
Æzero the transmitter at the installation location; ei-
ther via HART communicator or PC conguration
software, or with the local keypad;
Æset the square root output signal and the decimal
point [in % FS]; either via HART communicator or
PC conguration software, or with the local keypad
(only up to 1 %).
For pressure transmitters with software version 1.9
or higher, the switch-o point setting means that
with a pressure increase from 0 to the set switch-o
point (n % FS), the output signal is zero (4 mA). From
the set switch-o point, the output characteristics for
the analogue output and the linear characteristics for
the HART digital output are changed. If the pressure
drops below the n % minus 0.2 % (hysteresis) point,
the elementary characteristic of the processing is
switched to zero. As an example, the switch-o algo-
rithm of the analogue output signal is shown in the
following gure.
Description:
I [mA] analogue output signal; loop current
[4…20 mA] or A [%]
n % switch-o point at the square root
output transmitter signal
PV or Z [%] axis of the process variable in the user
unit or in percentage of the set range
LRV lower range value; the lower value of
the set pressure range (corresponds
to the 4 mA current output signal)
URV upper range value; the upper value of
the set pressure range (corresponds
to the 20 mA current output signal)
PTDi pressure transmitter analogue output signal
with set switch-o point in n %
Example device conguration:
Transmitter conguration parameters
• nominal measuring range 0…100 kPa
• set measuring range 0…50 kPa
• switch-o point 5 % of the set range
Assemble the measuring system according to gure
2 and run the PC software:
ÆSet the zero point of the transmitter
– tab page: Basic Commands →Zeroing
ÆSet the width of the transmitter to 0…50 kPa
– tab page: Common Parameters →Lower Range
Value and Upper Range Value
ÆSet the square root output signal of the transmitter
– tab page: Common Parameters →Transfer
Function
ÆEnter 5 in the eld Parameter Inection Point
– tab page: Common Parameters →Start point rad
ÆSave the data in the pressure transmitter
(button: Write Parameters)
The switch-o point function will be executed at 5 %
of the set range when the pressure increases or at
4.8 % of the set range when the pressure decreases.

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Operating Instructions
Process Pressure Transmitters PTPi and PTDi
9.3 Alarms
The alarms indicate if operating parameters of the
pressure transmitter (maximum temperature, pres-
sure) are exceeded and if any electronic components
have failures.
You can view the diagnostic checklist of the alerts
with the PC software after reading the transmitter
parameters. In this way, the values of the alarm cur-
rent in the current loop can also be set to < 3.7 (low)
or > 21.5 mA (high).
Due to extensive diagnostic measures, the alarms
have been grouped by type to simplify the user in-
terface. The user can decide which type of alarm
triggers the alarm current in the current loop. We
recommend to operate the transmitter with the alarm
current function enabled.
Example:
The user can also set the limits of the alarm signal-
ling: > 21.5 mA (high alarm) or < 3.7 mA (low alarm).
Example:
Exceeding the nominal pressure by more than 50 % is
signalled in the display with OVER “ouEr” or UNDER
“undEr”.
The pressure transmitters PTPi generate a pro-
cess variable analogue signal in the range
≥ 3.8 – 3.9 mA…≤ 20.5 mA. Depending on the set-
ting, this signal can be proportional or inversely
proportional to the measured pressure or pressure
dierence. This current is read by a logic controller
connected to the current loop line, which monitors
whether the signal supplied is present:
• within the pressure or dierential pressure range
between lower range value (LRV) and upper range
value (URV)
range (≥4.0 mA… ≤ 20.0 mA) with simple
characteristics (4…20 mA)
range (≤20.0 mA… ≥ 4.0 mA) with inverse
characteristic (20…4 mA)
• within the pressure or dierential pressure range
below the lower range value (LRV)
range (≥3.9 mA…< 4.0 mA) for normal mode with
simple characteristics (4…20 mA)
range (≥3.8 mA…< 4.0 mA) for Namur mode with
simple characteristics (4…20 mA)
or
range > 20.0 mA…≤20.5 mA) for normal mode with
inverse characteristic (20…4 mA)
range > 20.0 mA…≤20.5 mA) for Namur mode with
inverse characteristic (20…4 mA)
• within the pressure or dierential pressure range
above the upper range value (URV)
range (>20.0 mA…≤ 20.5 mA) for normal mode
with simple characteristics (4…20 mA)
range (>20.0 mA…≤ 20.5 mA) for Namur mode
with simple characteristics (4…20 mA)
or
range (≥3.9 mA…< 4.0 mA) for normal mode with
inverse characteristic (20…4 mA)
range (≥3.8 mA…< 4.0 mA) for Namur mode with
inverse characteristic (20…4 mA)
or
range (<3.7 mA) for alarm signal type “L”
range (>21.5 mA) for alarm signal type “H”

B0 9 -711•B73•10/23•GB •p. 20 of 32•www.armano-messtechnik.com
Operating Instructions
Process Pressure Transmitters PTPi and PTDi
10. Maintenance / Cleaning,
Storage and Transport
CAUTION! Material damage and loss of
warranty!
Any modications or interventions in the
device, made by the customer, might dam-
age important parts or components. Such
intervention leads to the loss of any war-
ranty and manufacturer’s responsibility!
ÆNever modify the device or perform any
repairs yourself.
Maintenance:
Regular inspections should be carried out in accord-
ance with the regulations applicable to the user. Dur-
ing the inspection, the pressure connections should
be checked for loose connections and leakages, the
electrical connections should be checked for tight-
ness and condition of the seals, the cable glands and
the chemical seal should be checked for tarnishing
and corrosion.
Further Inspections:
If the pressure transmitters are installed in a location
where they may be exposed to mechanical damage,
overpressure, hydraulic impulses or overvoltage, or
where the membrane might be endangered by sed-
imentation, crystallisation or erosion, inspections
should be carried out as required.
If you notice that a signal in the transmission line is
missing or its value is incorrect, the line and its con-
necting terminals should be checked.
Check whether the values for supply voltage and load
resistance are correct.
If the line is working properly, check the function of
the pressure transmitter.
Cleaning:
• Clean the device with a dry or slightly dampened
soft cloth.
• Do not use any sharp objects or aggressive agents
for cleaning.
CAUTION! Never use sharp or hard ob-
jects or ultrasonic baths when cleaning
the pressure connection, as these de-
stroy the sensor!
Spare parts:
Parts of the pressure transmitters that may be sub-
ject to wear or damage and need to be replaced: seal-
ing of the cover.
Storage and transport:
Pressure transmitters are sensitive sen-
sors and have to be handled with due
care.
• Use the original packaging or comparable packag-
ing for storage/ for transport. Especially the pro-
tection cap should not be removed from the pro-
cess connection and the plug connector until the
installation of the device.
• Avoid impacts or strong vibrations.
• Protect the device against damage caused by ex-
ternal inuences.
• During storage, the specied temperature limits
must not be exceeded.
11. Dismounting and Disposal
WARNING! Risk of injury!
Never remove the device from a system in
operation.
Make sure that the system is switched o
professionally.
Before dismounting:
Check before dismounting, whether the system
• is switched o,
• is in a safe and currentless state,
• is unpressurised and cooled down.