WIKA PG28 User manual

DE
EN
Operating instructions
Betriebsanleitung
Bourdon tube pressure gauge, Hastelloy, model PG28
Rohrfedermanometer, Hastelloy, Typ PG28
Model PG28

DE
EN
14401362.01 06/2020 EN/DE
WIKA operating instructions, pressure gauge model PG 28
2
© 06/2020 WIKA Alexander Wiegand SE & Co. KG
All rights reserved. / Alle Rechte vorbehalten.
WIKA® is a registered trademark in various countries.
WIKA® ist eine geschützte Marke in verschiedenen Ländern.
Prior to starting any work, read the operating instructions!
Keep for later use!
Vor Beginn aller Arbeiten Betriebsanleitung lesen!
Zum späteren Gebrauch aufbewahren!
Operating instructions, model PG28 Page 3 - 24
Betriebsanleitung, Typ PG28 Seite 25 - 46

EN
WIKA operating instructions pressure gauge, model PG28 3
14401362.01 06/2020 EN/DE
1. General information 4
2. Design and function 5
3. Safety 6
4. Transport, packaging and storage 13
5. Commissioning, operation 13
6. Faults 18
7. Maintenance and cleaning 20
8. Dismounting, return and disposal 22
9. Specications 23
Annex: Declaration of conformity 47
Contents
Contents
Declarations of conformity can be found online at www.wika.com.

EN
WIKA operating instructions pressure gauge, model PG284
14401362.01 06/2020 EN/DE
1. General information
The instrument described in the operating instructions has been
designed and manufactured using state-of-the-art technology. All
components are subject to stringent quality and environmental
criteria during production. Our management systems are certied to
ISO 9001 and ISO 14001.
These operating instructions contain important information on
handling the instrument. Working safely requires that all safety
instructions and work instructions are observed.
Observe the relevant local accident prevention regulations and
general safety regulations for the instrument's range of use.
The operating instructions are part of the product and must be kept
in the immediate vicinity of the instrument and readily accessible to
skilled personnel at any time. Pass the operating instructions on to the
next operator or owner of the instrument.
Skilled personnel must have carefully read and understood the
operating instructions prior to beginning any work.
The general terms and conditions contained in the sales
documentation shall apply.
Subject to technical modications.
Scope and further information:
Data sheet, model PG28: PM 02.32
Technical information: IN 00.05
Internet address: www.wika.de / www.wika.com
1. General information

EN
WIKA operating instructions pressure gauge, model PG28 5
14401362.01 06/2020 EN/DE
2. Design and function
2.1 Overview
Vent valve
Window
Pressure element: Bourdon tube
Dial with scale
Case: Safety version “S3” in
accordance with EN 837
Process connection
Pointer
2.2 Description
All wetted parts (process connection and pressure element) of the
model PG28 pressure gauge described below are manufactured from
Hastelloy C276 (2.4819).The nominal size (NS) of 100 mm or 160 mm
stated is a rounded value referred to the case diameter.
Case designs in accordance with EN 837
Version “S1”, not shown here, is equipped with a blow-out device in the
case back.
Safety version “S3”, shown above, is equipped with a solid bae wall
between the measuring system and the dial and with a blow-out back. In
the event of a failure, the operator is protected at the front side, as media
or components can only be ejected via the back of the case.
2.3 Scope of delivery
Cross-check scope of delivery with delivery note.


 



2. Design and function

EN
WIKA operating instructions pressure gauge, model PG286
14401362.01 06/2020 EN/DE
3. Safety
3.1 Explanation of symbols
WARNING!
... indicates a potentially dangerous situation that can result in
serious injury or death, if not avoided.
CAUTION!
... indicates a potentially dangerous situation that can result
in light injuries or damage to property or the environment, if
not avoided.
Information
... points out useful tips, recommendations and information
for ecient and trouble-free operation.
3.2 Intended use
The pressure gauge models described here are suitable:
For pressure measurement in indoor and outdoor areas
For gaseous and liquid aggressive media that are not highly viscous
or crystallising, also in aggressive environments
For high dynamic pressure loads and vibrations (only with case liquid
lling)
For applications in the oil and gas industry, chemical and petrochem-
ical industries
Classication per European pressure equipment directive
Instrument type: Pressure accessory without safety function
Media: Liquid or gaseous, group 1 (dangerous)
Maximum permissible pressure PS, see chapter 3.6 “Labelling /
safety marks”
Volume of wetted parts: < 0.1 L
3. Safety

EN
WIKA operating instructions pressure gauge, model PG28 7
14401362.01 06/2020 EN/DE
The instrument must only be used with media which are not harmful
to the wetted parts over the entire operating range of the instrument.
Any change in the state of the matter or any decomposition of unstable
media is not permitted.
Only use the instrument in applications that lie within its technical
performance limits (e.g. max. ambient temperature, material
compatibility, ...).
→ For performance limits see chapter 9 “Specications”.
In order to achieve an optimal service life of the instrument,
it is recommended to load the instrument between 1/3 x PS
and 2/3 x PS. See Technical information IN 00.05.
This instrument is not permitted to be used in hazardous areas!
The instrument has been designed and built solely for the intended use
described here, and may only be used accordingly.
The technical specications contained in these operating instructions
and the limit values in accordance with EN 837-1 must be observed.
Improper handling or operation of the instrument outside of its technical
specications and the limit values in accordance with EN 837-1 requires
the instrument to be taken out of service immediately and inspected by
an authorised WIKA service engineer.
With instruments which do not correspond to the safety version “S3”,
highly pressurised media might leak out through the possibly bursting
window in case of a component failure.
The manufacturer shall not be liable for claims of any type based on
operation contrary to the intended use.
3. Safety

EN
WIKA operating instructions pressure gauge, model PG288
14401362.01 06/2020 EN/DE
3. Safety
3.3 Improper use
WARNING!
Injuries through improper use
Improper use of the instrument can lead to hazardous situa-
tions and injuries.
▶
Refrain from unauthorised modications to the instrument.
▶
Do not use the instrument within hazardous areas.
▶
The instrument should not be used for abrasive, corrosive
and highly viscous media.
Any use beyond or dierent to the intended use is considered as improp-
er use.
The instrument must not be used as part of a safety or emergency stop
device (safety accessory).
3.4 Responsibility of the operator
The instrument is used in the industrial sector. The operator is therefore
responsible for legal obligations regarding safety at work.
The safety instructions within these operating instructions, as well as the
safety, accident prevention and environmental protection regulations for
the application area must be maintained.
The instrument must only be used with media which are not harmful to
the wetted parts over the entire operating range of the instrument.
The operator is obliged to maintain the product label in a legible
condition.

EN
WIKA operating instructions pressure gauge, model PG28 9
14401362.01 06/2020 EN/DE
To ensure safe working on the instrument, the operating company must
ensure
that suitable rst-aid equipment is available and aid is provided
whenever required.
that the operating personnel are regularly instructed in all topics
regarding work safety, rst aid and environmental protection and
know the operating instructions and, in particular, the safety instruc-
tions contained therein.
that the instrument is suitable for the particular application in accord-
ance with its intended use.
On the wetted parts of the instrument, small residual amounts
of the adjustment medium (e.g. compressed air, water, oil)
can adhere from production.With increased requirements for
technical cleanliness, suitability for the application must be
checked by the operator before commissioning.
Liquid media with the property of changing the volume during
solidication can damage the measuring system (e.g. water if
it falls below the freezing point).
3.5 Personnel qualication
WARNING!
Risk of injury should qualication be insucient
Improper handling can result in considerable injury and
damage to property.
▶
The activities described in these operating instructions
may only be carried out by skilled personnel who have the
qualications described below.
3. Safety

EN
WIKA operating instructions pressure gauge, model PG2810
14401362.01 06/2020 EN/DE
3. Safety
Skilled personnel
Skilled personnel, authorised by the operator, are understood to be
personnel who, based on their technical training, knowledge of measure-
ment and control technology and on their experience and knowledge
of country-specic regulations, current standards and directives, are
capable of carrying out the work described and independently recognis-
ing potential hazards.
Personal protective equipment
The personal protective equipment is designed to protect the skilled
personnel from hazards that could impair their safety or health during
work.When carrying out the various tasks on and with the instrument,
the skilled personnel must wear personal protective equipment.
Follow the instructions displayed in the work area regarding
personal protective equipment!
The requisite personal protective equipment must be provided by the
operating company.

EN
WIKA operating instructions pressure gauge, model PG28 11
14401362.01 06/2020 EN/DE
3.6 Labelling / Safety marks
Product label
Model
Volume of wetted parts
Maximum permissible pressure PS
Serial number
Year of manufacture
Manufacturer/address
CE marking in accordance with the European pressure equipment
directive
Instruments with PS > 200 bar are marked with the CE symbol.
Instruments with PS ≤ 200 bar must not be marked with the CE symbol
per pressure equipment directive and are subject to the applicable
“sound engineering practice”.
Before mounting and commissioning the instrument,
ensure you read the operating instructions!
  

3. Safety

EN
WIKA operating instructions pressure gauge, model PG2812
14401362.01 06/2020 EN/DE
3. Safety ... / 4. Transport, packaging
Dial (example)
4. Transport, packaging and storage
4.1 Tran sport
Check the instrument for any damage that may have been caused by
transport.
Obvious damage must be reported immediately.
CAUTION!
Damage through improper transport
With improper transport, a high level of damage to property
can occur.
▶
When unloading packed goods upon delivery as well as
during internal transport, proceed carefully and observe
the symbols on the packaging.
▶
With internal transport, observe the instructions in chapter
5.2 “Packaging and storage”.
Shocks can cause small bubbles to form in the ll uid of
lled instruments. This has no eect on the function of the
instrument.
Lower scale value
Accuracy class
Full scale value
Identifying mark for steady load
capacity
Instruments with this marking
correspond to the safety ver-
sion “S3” with solid bae wall
(Solidfront) and blow-out back





Cl. 1.0
EN 837-1
bar
16
15
10
5
0
S
W
I
S
S
M
O
V
E
M
E
N
T
Hastelloy C276

EN
WIKA operating instructions pressure gauge, model PG28 13
14401362.01 06/2020 EN/DE
4. Transport ... / 5. Commissioning, operation
4.2 Packaging and storage
Do not remove packaging until just before mounting.
Keep the packaging as it will provide optimum protection during trans-
port (e.g. change in installation site, sending for repair).
Permissible conditions at the place of storage:
Storage temperature: -40 ... +70 °C 1)
1) For low-temperature version -70 °C ... +70 °C
Avoid the following inuence:
Mechanical vibration, mechanical shock (putting it down hard)
5. Commissioning, operation
Before installation, commissioning and operation, ensure that the appro-
priate instrument has been selected in terms of scale range, design and
specic measuring conditions.
Personnel: Skilled personnel
WARNING!
Physical injuries and damage to property and the
environment caused by hazardous media
Upon contact with hazardous media (e.g. with ammable
or toxic substances), harmful media (e.g. corrosive, toxic,
carcinogenic, radioactive), there is a danger of physical
injuries and damage to property and the environment.

EN
WIKA operating instructions pressure gauge, model PG2814
14401362.01 06/2020 EN/DE
Hazardous media with extremely high temperature and under
high pressure may be present at the instrument.
▶
For these media, in addition to all standard regulations,
the appropriate existing codes or regulations must also be
followed.
▶
Wear the requisite protective equipment (see chapter 3.5
“Personal protective equipment”).
WARNING!
Physical injuries and damage to property and the
environment caused by media escaping under high
pressure
With the pressurisation of the instrument, as a result of
poor sealing of the process connection, media under high
pressure can escape.
Due to the high energy of the media that can escape in
the event of a failure, the possibility of physical injuries and
damage to property exists.
▶
The sealing of the process connection must be carried out
expertly and checked for leak tightness.
WARNING!
Physical injuries and damage to property and the
environment caused by components blowing out in the
event of a failure
In the event of a failure, either the plug of the blow-out device
or, in case of instruments with safety version “S3”, the entire
case back is ejected.
Due to the high energy of the components blown out in
the event of a failure and the media that can subsequently
escape, the possibility of physical injuries and damage to
property exists.
5. Commissioning, operation

EN
WIKA operating instructions pressure gauge, model PG28 15
14401362.01 06/2020 EN/DE
▶
It must be ensured, e.g. by suitable safety devices or
sucient distance, that in the event of a failure neither
personal injury nor damage to property or the environment
can occur.
5.1 Requirements for the installation point
If the line to the measuring instrument is not adequately stable, an
instrument mounting bracket should be used for fastening.
If vibrations cannot be avoided by means of suitable installation,
instruments with case lling should be used.
For outdoor applications, the selected installation location has to be
suitable for the specied ingress protection, so that the instrument is
not exposed to impermissible weather conditions.
In order to avoid any additional heating, the instruments must not be
exposed to direct solar irradiation while in operation!
To ensure that the pressure can be safely vented in the case of
a failure, a minimum distance of 20 mm from any object must be
maintained.
5.2 Installation
After unpacking the instrument, a visual inspection for damage (e. g.
pointer, threads, sealing face, pressure port) must be carried out.
Depending on the application, the instrument should be lled with the
medium before screwing in, in order to ensure it functions properly.
Mounting is only permitted in the depressurised state. Reliably
depressurise the instrument using the available valves and protective
devices (e.g. shut-o valve, monoange).
Nominal position per EN 837-3 / 9.6.6 image 7: 90°±5° ( ⊥ ), if not
stated otherwise in the order documentation.
5. Commissioning, operation

EN
WIKA operating instructions pressure gauge, model PG2816
14401362.01 06/2020 EN/DE
With parallel male threads (e.g. G ½ B), use at gaskets, lens-type
sealing rings or WIKA prole sealings.
With tapered threads (e.g. NPT threads), sealing is made in the
threads, using a suitable sealing material (EN 837-2).
When screwing the instruments in, the force required for sealing must
not be applied through the case, but only through the spanner ats
provided for this purpose, and using a suitable tool.
The tightening torque is dependent on the selected process
connection.
Sealing
in the thread
Spanner ats
Sealing face
Installation with open-ended spanner
5. Commissioning, operation

EN
WIKA operating instructions pressure gauge, model PG28 17
14401362.01 06/2020 EN/DE
5.3 External zero point setting (if available)
If there is a deviation of the pointer from the zero point (in depressurised
condition), a zero point setting can be carried out through turning the
hexagon nut on the rear of the instrument. For setting the hexagon nut, a
spanner with a spanner width of 7 mm is needed.
The setting range of the pointer is ±25°.
5.4 Commissioning, operation
Check the sealing at the process connection over the entire scale
range before commissioning.
Pressure surges must be avoided at all costs, open the shut-o
valves slowly.
After installation, open the vent valve (if available) or set from CLOSE
to OPEN.The version of the vent valve depends on
the model and can deviate from the illustration shown!
Observe the eects on the ingress protection. For
information on the ingress protection, see Technical information
IN 00.18.
The instrument must not be subjected to any external loading (e.g.
use as a climbing aid, support for objects).
5. Commissioning, operation / 6. Faults

EN
WIKA operating instructions pressure gauge, model PG2818
14401362.01 06/2020 EN/DE
6. Faults
6. Faults
Personnel: Skilled personnel
CAUTION!
Physical injuries and damage to property and the
environment
If faults cannot be eliminated by means of the listed
measures, the instrument must be taken out of operation
immediately.
▶
Ensure that there is no longer any pressure present and
protect against being put into operation accidentally.
▶
Contact the manufacturer.
▶
If a return is needed, please follow the instructions given in
chapter 8.2 “Return”.
For contact details see chapter 1 “General information” or the
back page of the operating instructions.
Faults Causes Measures
No pointer movement
despite change in
pressure.
Movement blocked. Replace instrument.
Pressure element
defective.
Pressure port blocked.
After depressuri-
sation, the pointer
remains just above
the zero point.
Friction in the movement. Tap lightly on the
case.
Instrument was
overloaded.
Replace instrument.
Material fatigue of the
pressure element.

EN
WIKA operating instructions pressure gauge, model PG28 19
14401362.01 06/2020 EN/DE
6. Faults
Faults Causes Measures
The pointer remains
outside the zero
point tolerance after
installation and
depressurisation.
Mounting error: Instrument
not mounted in nominal
position.
Check the mounting
position.
Transport damage (e.g.
non-permissible shock
loading).
Replace instrument.
Instrument outside
the accuracy class.
Instrument was operated
outside of permissible
performance limits.
Check the
observance of
the operating
parameters of the
application.
Replace instrument.
Vibration of the
pointer.
Vibrations in the
application.
Use instrument with
case lling.
Mechanical damage
(e.g. window, case).
Improper handling. Replace instrument.
Impermissible loading at
the installation point (e.g.
re and impacts)
For the exchange of the instrument chapters 8 “Dismounting, return and
disposal” and 5 “Commissioning, operation” must be observed.
Optical changes without limitation of the function
If the instrument is exposed to intensive UV radiation, the colouring of
the dial printing may change.
Shocks can cause small bubbles to form in the ll uid of lled
instruments.

EN
WIKA operating instructions pressure gauge, model PG2820
14401362.01 06/2020 EN/DE
7. Maintenance and cleaning
7. Maintenance and cleaning
Personnel: Skilled personnel
7.1 Maintenance
The instruments are maintenance-free.
The indicator should be checked once or twice every year. For this
the instrument must be disconnected from the process to check with
a pressure testing device.
For lled instruments, the level must be checked once or twice every
year.The liquid level must not drop below 75 % of the instrument
diameter.
Repairs should only be carried out by the manufacturer or, following
prior consultation with the manufacturer, by correspondingly qualied
skilled personnel.
After exceeding the requirements per EN 837-1 1), the instrument
must be checked for correct functioning and replaced if necessary.
1) The scale range 0 ... 700 bar [0 ... 10,000 psi] has achieved a load cycle stability of 180,000 load cycles, in deviation
from the requirements.
7.2 Cleaning
CAUTION!
Physical injuries and damage to property and the
environment
Improper cleaning may lead to physical injuries and damage
to property and the environment. Residual media in the
dismounted instrument can result in a risk to persons, the
environment and equipment.
Carry out the cleaning process as described below.