WIKA PGW23.100.11 User manual

Operating instructions
Betriebsanleitung
EN
DE
Rohrfedermanometer mit drahtlosem Ausgangssignal,
Typ PGW23.100.11
Bourdon tube pressure gauge with wireless output signal,
model PGW23.100.11
Bourdon tube pressure gauge with wireless output signal, model PGW23.100.11

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WIKA operating instructions, model PGW23.100.11
EN
EN
Further languages can be found at www.wika.com.
© 10/2020 WIKA Alexander Wiegand SE & Co. KG
All rights reserved. / Alle Rechte vorbehalten.
WIKA®is a registered trademark in various countries.
WIKA®is a registered trademark in various countries.
Prior to starting any work, read the operating instructions!
Keep for later use!
Prior to starting any work, read the operating instructions!
Keep for later use!
Operating instructions model PGW23.100.11 Page 3 - 38
Operating instructions model PGW23 Page 39 - 75

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Contents
Contents
1. General information 5
2. Short overview 6
2.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Description . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 LPWAN infrastructure . . . . . . . . . . . . . . . . . . . 7
2.4 Connection to IIoT platform . . . . . . . . . . . . . . . . . 7
2.5 LoRaWAN®specification . . . . . . . . . . . . . . . . . . 8
2.6 Scope of delivery . . . . . . . . . . . . . . . . . . . . . 8
3. Safety 9
3.1 Explanation of symbols . . . . . . . . . . . . . . . . . . . 9
3.2 Intended use . . . . . . . . . . . . . . . . . . . . . . 9
3.3 Improper use . . . . . . . . . . . . . . . . . . . . . . 10
3.4 Responsibility of the operator . . . . . . . . . . . . . . . . . 10
3.5 Personnel qualification . . . . . . . . . . . . . . . . . . . 11
3.6 Labelling, safety marks . . . . . . . . . . . . . . . . . . .12
3.7 Product passport . . . . . . . . . . . . . . . . . . . . .12
3.8 Approved batteries and antennas . . . . . . . . . . . . . . . 14
3.9 Data transmission security . . . . . . . . . . . . . . . . . . 15
4. Design and function 16
5. Transport, packaging and storage 17
5.1 Transport. . . . . . . . . . . . . . . . . . . . . . . . 17
5.2 Packaging and storage . . . . . . . . . . . . . . . . . . .17
6. Commissioning, operation 18
6.1 Mechanical mounting . . . . . . . . . . . . . . . . . . . 18
6.2 Activating the radio module . . . . . . . . . . . . . . . . . 22
6.3 App “myWIKA wireless device” . . . . . . . . . . . . . . . . 23
6.4 Battery status . . . . . . . . . . . . . . . . . . . . . . 24
6.5 Integrating the instrument . . . . . . . . . . . . . . . . . . 24
6.6 Operation . . . . . . . . . . . . . . . . . . . . . . . 25
6.6.1 Operating modes of the LoRaWAN®functionality. . . . . . . . . . . . . .25
7. Faults 26
8. Maintenance, cleaning and recalibration 28
8.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . 28
8.2 Battery replacement . . . . . . . . . . . . . . . . . . . .28
8.3 Initialising the battery . . . . . . . . . . . . . . . . . . . 29
8.4 Cleaning . . . . . . . . . . . . . . . . . . . . . . . .29

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Contents
9. Dismounting, return and disposal 30
9.1 Dismounting . . . . . . . . . . . . . . . . . . . . . . 30
9.2 Return. . . . . . . . . . . . . . . . . . . . . . . . . 31
9.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . .32
10.Specifications 33
10.1 Specifications . . . . . . . . . . . . . . . . . . . . . .33
10.2 Certificates (option) . . . . . . . . . . . . . . . . . . . .35
10.3 Dimensions in mm . . . . . . . . . . . . . . . . . . . . 36
11.Accessories 38
Annex : EU declaration of conformity 75

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1. General information
1. General information
■The instrument described in the operating instructions has been manufactured
using state-of-the-art technology. All components are subject to stringent quality and
environmental criteria during production. Our management systems are certified 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 modifications.
■Further information:
- Internet address: www.wika.de / www.wika.com
- Relevant data sheet: PV 42.02
- Application consultant: Tel.: [phone]
Fax: [phone]
[e-mail]

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2. Short overview
2.1 Overview






2. Short overview
Pressure element
Movement
Sensor PCB
Laminated safety glass
Connection for antenna
Battery compartment incl. LoRa®radio
module
Process connection
2.2 Description
Wherever the process pressure has to be indicated locally and, at the same
time, centralised, web-based remote monitoring is required, the IIoT-ready model
PGW23.100.11 measuring instrument finds its use.
The all welded and robust Bourdon tube measuring system produces a pointer rotation
proportional to the pressure.The process pressure is indicated continuously by the pointer
on the dial.The measuring electronics convert the pointer rotation into an electronic
signal, which is further transmitted to the gateway via the radio module and the antenna.
The transmission of the measured pressure values can be carried out in a customer-
specific IIoT infrastructure. For this, an LPWAN infrastructure is needed (→ see chapter
2.3 “LPWAN infrastructure”).
Battery-operated radio transmission via LoRa®is based on LPWAN technology (“low
power wide area network”) to enable high transmission ranges and long battery life.
The IIoT-ready model PGW23.100.11 fulfils all safety-related requirements of the relevant
standards and regulations for the on-site display of the working pressure of pressure vessels,
as well as the requirements of the radio equipment directive for data communication.
WIKA manufactures and qualifies the pressure gauge in accordance with the
requirements of the EN 837-1 European standard in the “S3” safety version.The safety
version is made up of a non-splintering window, a solid baffle wall between measuring
system and dial and a blow-out back.
The transmission of the measured pressure values is carried out in the IIoT platform at
a preset sending interval.The measurement and sending intervals, and also the alarm

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limits, for particular measured values can be configured over the IIoT platform. In addition,
the instrument status (current measured value, battery life, etc.) can also be queried
locally via a mobile device using a local interface via NFC (“near field communication”).
2.3 LPWAN infrastructure
A measuring instrument that allows remote transmission via radio must be integrated into
the IIoT infrastructure. The following schematic illustration shows a typical LPWAN
infrastructure:
Data from an IIoT-ready measuring instrument is transmitted wirelessly to the gateway. It is
ensured that only authorised end devices may communicate with the network server (e.g.
LoRaWAN®). For this, the measuring instrument must first be coupled with the network
server. In LoRaWAN®, the radio transmission can be up to 10 km.The ranges depend on
the topography.
Measured values from several hundred LoRa®-enabled IIoT instruments, such as
the model PGW23.100.11, can be captured by a gateway and transmitted via cable
connections (e.g. via Ethernet) or over-the-air (e.g. via 4G or WLAN) on to a network server.
In a web-based IIoT platform, the measured data can be stored, alarms can be set and
configurations can be made on the instrument. If the limit values are exceeded, alarm
messages can be sent as notification via SMS or e-mail.The measured data can be
analysed via the visualization in the dashboard, thus enabling remote monitoring of the
process pressure. WIKA provides an app called “myWIKA wireless device” to support
commissioning and local status inquiries of the measuring instrument.
2.4 Connection to IIoT platform
The instrument is connected to a LoRaWAN®gateway and the measured values are
transferred to the IIoT infrastructure (e.g. platform, PC, mobile device, etc.) at freely
configurable intervals.
Application server
(dashboard)
Gateway Network server
IIoT platform
Instrument
2. Short overview
The LoRa®mark and LoRa logo are trademarks of Semtech Corporation.
LoRaWAN®is a mark used under license from the LoRa Alliance®.

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2.5 LoRaWAN®specification
For the data transfer from the model PGW23.100.11 measuring instrument, a radio
module with LoRaWAN®version 1.0.3. is used. The specification of the radio module can
be taken from the following table:
Radio module LoRaWAN®Version 1.0.3
LPWAN 1 LPWAN 2 LPWAN 3 LPWAN 4/5
Spreading factor (SF) /
modulation 1)
7 ... 12
Frequency band (ERC 2019) 2) h1.5 h1.5 h1.5 h1.0
Channel frequency (in MHz) 3) 868.1 868.3 868.5 863.1 ... 869.9
Power (in mW/in dBm) 4) 25/14
Duty cycle (DC) (in %) 5) 1 1 1 0.1
Data rate (DR) 6) 0 ... 5 (BW = 125 kHz)
Comment Standard
channel
Standard
channel
Standard
channel
-
1) Spreading factors (graded between 7 ... 12) are automatically assigned according to the ambient conditions between the instrument
and the gateway. A higher SF increases the sending time and improves the communication range, though the energy consumption
of the instrument rises.
2) The range of frequencies in the radio frequency spectrum that is limited by a lower and an upper frequency.The frequency band shown
in the table is defined in the document published in 2019 by the European committee for radio communications (ERC).
3) The part of the frequency spectrum that should be used for the transmission.
4) Amount of energy transmitted to the antenna for communication. In Europe, the maximum sending power for the uplink is limited
to 25 mW (14 dBm).
5) The fraction of time in which an end device can occupy a channel. In Europe there is a duty cycle depending on the selected
channel of 0.1 % or 1 % per day.
6) The speed with which the data is transmitted. Dependent upon the bandwidth used and the spreading factor.
2.6 Scope of delivery
■Bourdon tube pressure gauge with wireless output signal, model PGW23.100.11
■Operating instructions
■Quick start guide with login credentials for commissioning (in envelope)
■Battery
■Antenna
■Threaded safety cap
Cross-check scope of delivery with delivery note.
2. Short overview

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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.
WARNING!
... indicates a potentially dangerous situation that can result in burns,
caused by hot surfaces or liquids, if not avoided.
Information
... points out useful tips, recommendations and information for efficient and
trouble-free operation.
3.2 Intended use
The model PGW23.100.11 is used for condition-oriented and preventive maintenance in
industrial applications.The instrument can be used wherever the process pressure has to
be indicated locally and, at the same time, centralised, web-based remote monitoring is
required.
The remote monitoring of the process pressure via radio transmission is only suitable for
non-critical and non-safety-relevant applications.
The remote monitoring function must not be used for control purposes,
as it cannot be guaranteed that data packets won't be lost during radio
transmission.
The LoRa®signal may only be used for mobile applications to a limited
extent. This applies particularly for high spreading factors.
The remote monitoring of the process pressure is achieved over a web-based platform.
The instrument offers many application possibilities for gaseous and liquid aggressive
media that are not highly viscous or crystallising.
Only use the instrument in applications that lie within its technical performance limits (e.g.
temperature limits, material compatibility, ...).
3. Safety

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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 manufacturer shall not be liable for claims of any
type based on operation contrary to the intended use.
3.3 Improper use
WARNING!
Changes to the instrument
Changes to the instrument can lead to hazardous situations and injuries.
▶Refrain from unauthorised modifications to the instrument.
▶The instrument must only be used for the usage described here.
▶Only use the approved batteries and antennas (→ see chapter 3.8
“Approved batteries and antennas”).
▶Do not shorten or extend the antennas.
WARNING!
Injuries through improper use
Improper use of the instrument can lead to hazardous situations and injuries.
▶Refrain from unauthorised modifications to the instrument.
▶Do not hold the instrument by the antenna.
▶Do not use the instrument for abrasive and highly viscous or crystallising
media.
▶Do not use the instrument within hazardous areas.
The remote monitoring function must not be used for control purposes,
as it cannot be guaranteed that data packets won't be lost during radio
transmission.
Any use beyond or different to the intended use is considered as improper use.
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 operator is obliged to maintain the product label in a legible condition.
3. Safety

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To ensure safe working on the instrument, the operating company must ensure
■that suitable first-aid equipment is available and aid is provided whenever required.
■that the operating personnel are regularly instructed in all topics regarding work safety,
first aid and environmental protection and know the operating instructions and, in
particular, the safety instructions contained therein.
■that the instrument is suitable for the particular application in accordance with its
intended use.
■that personal protective equipment is available.
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 solidification can
damage the measuring system (e.g. water if it falls below the freezing point).
3.5 Personnel qualification
WARNING!
Risk of injury should qualification be insufficient
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 qualifications described below.
Skilled personnel
Skilled personnel, authorised by the operator, are understood to be personnel who, based
on their technical training, knowledge of measurement and control technology and on
their experience and knowledge of country-specific regulations, current standards and
directives, are capable of carrying out the work described and independently recognising
potential hazards.
Special operating conditions require further appropriate knowledge, e.g. of aggressive
media.
3. Safety

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3.6 Labelling, safety marks
Product label (example)
WIKA Alexander Wiegand SE & Co. KG 63911 Klingenberg / Germany








Product name Login credentials for commissioning
Pressure range Note on battery use
Radio standard; wireless output signal Date of manufacture
Article number QR code per DIN SPEC 91406:2019-12
with the link to the product passport
(→ see chapter 3.7 “Product passport”)
Serial number
Symbols
Before mounting and commissioning the instrument, ensure you read
the operating instructions!
Do not dispose of with household waste. Ensure a proper disposal in
accordance with national regulations.
DC voltage
3.7 Product passport
The product passport can be accessed on the product detail page, via the QR code on
the product label or directly from the corresponding web application.
Web application
3. Safety

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WIKA - Intelligent serial number
The “WIKA intelligent serial number” and the corresponding web application is the central tool
in which all the required information on the specific instrument can be found.
After entering 1the intelligent serial number into the web application, all instrument-
specific details on the manufactured version are displayed.
Under 2“Product pass”, the most important additional information on the instrument,
such as measuring range, accuracy, process connection, manufacturing date, etc., can
be retrieved.You can also download (calibration) certificates directly from this location.
Under 3“Article details”, further article details are listed, as well as current product
documentation (e.g. the data sheet 6and operating instructions 7).
1
2
3
3. Safety

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3. Safety
From this view, the required information can be printed directly via the 4[Print View].
Furthermore, by clicking on 5[Email], an e-mail is opened which already contains the
intelligent serial number of the currently retrieved instrument and this can be sent to any
recipient, but also, for example, to a corresponding WIKA contact, in order to re-order
exactly the same product, as an example.
3.8 Approved batteries and antennas
To ensure proper operation and the best possible performance, only use the batteries
and antennas listed below:
Battery/antenna type Designation
Lithium thionyl chloride battery Saft LS 17500
Rigid antenna (standard) Pulse W5017
Antenna with extended cable (option) Linx ANT-868-ID-2000-SMA
CAUTION!
Physical injuries and damage to property and the environment
Lithium thionyl chloride batteries are not rechargeable. Improper handling can
lead to leakage or escape of vapourised electrolyte vapours and cause a fire or
explosion.
▶Do not open the battery.
▶Do not damage the battery cells.
▶The positive and negative connections must not be short-circuited with
conductors.
▶Do not reverse the polarity.
▶Do not expose the battery to excessive mechanical loads.
▶Do not expose the battery to water or condensation.
▶Do not heat, solder or expose the battery to fire.
34
6
5
7

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3. Safety
The functionality has been successfully tested with the above-listed antennas.
Using different antennas voids the CE conformity and WIKA assumes no
responsibility.
The antenna must not be extended or shortened.
3.9 Data transmission security
As part of the network join procedure, a mutual authentication between a LoRaWAN®
end device and the LoRaWAN®network is established.This ensures that only real and
authorised devices are connected to real and authentic networks.
LoRaWAN®applications are origin-authenticated, integrity-protected, replication-protected
and encrypted. Combined with mutual authentication, this protection ensures that network
traffic has not been altered, comes from a legitimate device, is not understood by wiretaps,
and has not been intercepted and replayed by unauthorised third parties. In addition,
end-to-end encryption protects the usage data of applications exchanged between end
devices and application servers.
The security mechanisms mentioned are based on the standardised cryptographic AES
algorithms.These algorithms have been analysed by the cryptographic community for
many years, are recognised by NIST and are widely accepted as best security practice
for sensor nodes and networks.
LoRaWAN®security uses the cryptographic principle of AES cryptography in
combination with several operating modes: CMAC2 for integrity protection and CTR3
for encryption. Each LoRaWAN®device is personalised with a unique 128-bit AES key
(AppKey) and a globally unique identifier (EUI-64-based DevEUI), both used during the
device authentication process.
Further details can be found in the official LoRaWAN®security white paper from the
LoRa® alliance:
→ see https://lora-alliance.org/sites/default/files/2019-05/lorawan_security_whitepaper.pdf
The execution of a join request that was not initiated by the operator can be
an indication of a possible weakness in the security system.

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4. Design and function
4. Design and function
Operating principle
The all welded and robust Bourdon tube measuring system produces a pointer rotation
proportional to the pressure.The process pressure is indicated continuously by the pointer
on the dial.The measuring electronics convert the pointer rotation into an electronic signal,
which is further transmitted via the radio module and the antenna.
The model PGW23.100.11 uses the LoRaWAN®, class A radio standard which is
designed for energy-saving operation.
This means that communication with a suitable gateway mainly consists of uplinks
(messages originating from the measuring instrument). An uplink always occurs in regular,
preset cycles (transmission rate).The measuring rate can be defined independently of the
transmission rate. If an alarm limit is exceeded or dropped below during a measuring cycle,
a data transfer is carried out, regardless of the set transmission rate.
After a successful uplink, two time-limited windows can be used for the downlink
(message to the measuring instrument).This enables bidirectional communication and
the receipt of network control commands. If this possibility is not used, the end device can
only receive data after a new uplink.
→ For details see: https://lora-alliance.org/sites/default/files/2018-04/what-is-lorawan.pdf
Typical uplinks:
■Measured values
■Alarm parameters
■Notifications for fault diagnosis
■Configuration ID (for the identification of changes in the measuring and sending rate)
Typical downlink:
Configuration change (e.g. measuring rate, sending rate, alarm parameter etc.), which
can be recognised by the system.
The LoRaWAN®automatically detects, in the case of messages to be confirmed (e.g.
alarms), if the sending packet has not arrived and sends it again with changed sending
properties (spreading factors) until the receipt is confirmed by the system.
Higher spreading factors lead to an increased range, a longer sending time
and also an increased energy consumption of the radio device.

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5. Transport, packaging and storage
5. Transport, packaging and storage
5.1 Transport
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.
▶Do not hold the instrument by the antenna!
▶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”.
If the instrument is transported from a cold into a warm environment, the formation of
condensation may result in instrument malfunction. Before putting it back into operation,
wait for the instrument temperature and the room temperature to equalise.
Shocks can cause small bubbles to form in the fill fluid of filled instruments.
This has no effect on the function of the instrument.
5.2 Packaging and storage
Do not remove packaging until just before mounting.
Keep the packaging as it will provide optimum protection during transport (e.g. change in
installation site, sending for repair).
Permissible conditions at the place of storage:
■Storage temperature: -40 ... +70 °C [-40 ... +158 °F]
Avoid exposure to the following factors:
■Direct sunlight or proximity to hot objects
■Mechanical vibration, mechanical shock (putting it down hard)
■Soot, vapour, dust and corrosive gases
■Hazardous environments, flammable atmospheres
Store the instrument in its original packaging in a location that fulfils the conditions
listed above. If the original packaging is not available, pack and store the instrument as
described below:
1. Remove the battery from the instrument and store it separately (→ see chapter 8.2
“Battery replacement”).
2. Wrap the instrument in an antistatic plastic film.
3. Place the instrument, along with the shock-absorbent material, in the packaging.
4. If stored for a prolonged period of time (more than 30 days), place a bag containing a
desiccant inside the packaging.

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6. Commissioning, operation
Before installation, commissioning and operation, ensure that the appropriate instrument
has been selected in terms of scale range, design and specific measuring conditions.
WARNING!
Physical injury
When commissioning, there is a danger from aggressive media and high
pressures.
▶Observe the information in the material safety data sheet for the
corresponding medium.
▶Before connecting to a vessel, pipeline or system, depressurise them.
WARNING!
Physical injuries and damage to property and the environment caused
by hazardous media
Upon contact with hazardous media (e.g. oxygen, acetylene, flammable
or toxic substances), harmful media (e.g. corrosive, toxic, carcinogenic,
radioactive), and also with refrigeration plants and compressors, there is a
danger of physical injuries and damage to property and the environment.
Should a failure occur, aggressive media with extremely high temperature
and under high pressure or vacuum 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.
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.
6.1 Mechanical mounting
CAUTION!
Damage to the instrument
In order to prevent any damage to the instrument, observe the following:
▶Make sure the threaded connections are clean and undamaged.
▶The instrument should be installed in such a way that process-related
electrostatic charges (e.g. caused by flowing media) can be excluded.
▶Ensure that the antenna is not damaged and not bent.
▶The instrument must not be subjected to any external loading (e.g. use as
a climbing aid, support for objects).
6. Commissioning, operation

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In accordance with the general technical regulations for pressure gauges (e.g. EN 837-2
“Selection and installation recommendations for pressure gauges”).
When screwing the instruments in, the force required for sealing must not be applied
through the case, but only through the spanner flats provided for this purpose, and using
a suitable tool.
For parallel threads, use flat gaskets, lens-type sealing rings or WIKA profile sealings at
the sealing face .With tapered threads (e.g. NPT threads), sealing is made in the
threads , using a suitable sealing material (EN 837-2).
The tightening torque depends on the sealing used. In order to orientate the measuring
instrument so that it can be read as well as possible, a connection with LH-RH union or
union nut should be used.When a blow-out device is fitted to an instrument, it must be
protected against being blocked by debris and dirt.
Check the sealing at the process connection over the entire scale range before commissioning.
Safety instructions for installation
■Install instruments in accordance with the manufacturer's instructions and the valid
standards and regulations.
Installation
■Nominal position per EN 837-3 / 9.6.6 figure 7: 90° ( ⊥ )
■Process connection lower mount
■With filled versions the vent valve at the top of the case must be opened before
commissioning!
■For outdoor applications, the selected installation location has to be suitable for the
specified 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.
Installation with open-ended
spanner
Sealing in the thread 
Spanner ats
Sealing face 
6. Commissioning, operation

20 WIKA operating instructions, model PGW23.100.11
EN
14391169.01 10/2020 EN/DE
Respect the specific sending characteristic of the antenna (→ see chapter “Notes on the
sending characteristic”).
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, filled instruments should be used.The instruments should be protected
against coarse dirt and wide fluctuations in ambient temperature.
The ambient and medium temperatures must never be outside the permissible operating
conditions (→ see chapter 10 “Specifications”). The temperature at the case of the
instrument must not exceed a value of 60 °C [140 °F]. The limit value at the instrument
must be fulfilled by taking appropriate measures, e.g. mounting with a distance from
large, hot surfaces or vessels. If necessary, the connection must be extended with a
pipeline or provided with thermal insulation.
Notes on the sending characteristic
■To achieve the best possible sending quality, the radio link from the antenna to the
receiving gateway should be as free from barriers as possible.
■The signal strength is from slightly to severely affected by concrete walls, metallic
shielding, enclosures and hilly landscapes.
■For the best possible sending power of the antenna, no metallic objects, e.g. pipes,
may be closer than 10 cm to the antenna.
■With installation, pay attention to the sending characteristic of the instrument as well
as the information from the following figure:
y
x
z
Strong signal
Weak signal
6. Commissioning, operation