Siemens XCT-8 Operating Instructions Manual
Ultrasonic Transducers
XCT-8
Operating Instructions 03/2010
Safety Guidelines: Warning notices must be observed to ensure personal safety as well as that of
others, and to protect the product and the connected equipment. These warning notices are
accompanied by a clarification of the level of caution to be observed.
Qualified Personnel: This device/system may only be set up and operated in conjunction with this
manual. Qualified personnel are only authorized to install and operate this equipment in accordance with
established safety practices and standards.
Unit Repair and Excluded Liability:
• The user is responsible for all changes and repairs made to the device by the user or the user’s
agent.
• All new components are to be provided by Siemens Milltronics Process Instruments Inc.
• Restrict repair to faulty components only.
• Do not reuse faulty components.
Warning: Cardboard shipping package provides limited humidity and moisture protection. This product
can only function properly and safely if it is correctly transported, stored, installed, set up, operated, and
maintained.
This product is intended for use in industrial areas. Operation of this equipment in a residential area
may cause interference to several frequency based communications.
Note: Always use product in accordance with specifications.
Copyright Siemens Milltronics Process
Disclaimer of Liability
Instruments Inc. 2010. All Rights Reserved
This document is available in bound version and in
electronic version. We encourage users to purchase
authorized bound manuals, or to view electronic
versions as designed and authored by Siemens
Milltronics Process Instruments Inc. Siemens
Milltronics Process Instruments Inc. will not be
responsible for the contents of partial or whole
reproductions of either bound or electronic versions.
While we have verified the contents of this
manual for agreement with the instrumentation
described, variations remain possible. Thus we
cannot guarantee full agreement. The contents
of this manual are regularly reviewed and
corrections are included in subsequent editions.
Please check the website shown below for the
latest manual revisions.
We welcome all suggestions for improvement.
Technical data subject to change.
MILLTRONICS®is a registered trademark of Siemens Milltronics Process Instruments Inc.
Contact SMPI Technical Publications European Authorized Representative
at the following address:
Technical Publications Siemens AG
Siemens Milltronics Process Instruments Inc. Industry Sector
1954 Technology Drive, P.O. Box 4225 76181 Karlsruhe
Peterborough, Ontario, Canada, K9J 7B1 Deutschland
Email: techpubs.smpi@siemens.com
• For a selection of Siemens Milltronics level measurement manuals, go to:
www. siemens.com/level. Choose Instructions and Manuals under the More Info list.
• For a selection of Siemens Milltronics weighing manuals, go to:
www. siemens.com/weighing. Choose Support, and then Manuals / Operating Instructions.
© Siemens Milltronics Process Instruments Inc. 2010
Introduction
This product is intended for use in industrial areas. Operation of this
equipment in a residential area may cause interference to several
frequency based communications.
The Echomax XCT-8 transducer operates in
association with Siemens Milltronics ultrasonic
level monitoring products.
The transducer converts electrical pulses
provided by the transceiver to ultrasonic pulses
used for measurement and converts the ultrasonic
echoes back into an electrical signal. The signal is
interpreted by the Siemens Milltronics transceiver
using the patented Sonic Intelligence® algorithms
developed by Siemens Milltronics. The ultrasonic
pulse reduces in power by – 3 dB in a 12° cone
from the transducer face. Keep objects out of this
cone path to reduce the chance of false echoes
being recorded.
English
transducer
transducer
face
– 3 dB
boundary
The XCT-8 transducer incorporates an integral
temperature sensor that reports the ambient
temperature to the transceiver. The connection is
transparent because the ultrasonic and
temperature components of the transducer use
the same leads. This ensures that the Siemens
Milltronics transceiver can automatically
compensate and adjust the speed of sound
constant for varying temperatures.
The PTFE face allows it to be used in the food industry in intense clean-in-place
applications.
Transceivers
The XCT-8 Sanitary transducer is compatible with the following:
• MiniRanger Plus
• MultiRanger 100/200
•HydroRanger 200
• SITRANS LU 01
• SITRANS LU 02
• SITRANS LU 10
•AiRanger SPL
•AiRanger DPL
•AiRanger XPL
axis of
transmission
perpendicular to
transducer face
7ML19985HX62 XCT-8 Sanitary Transducer– INSTRUCTION MANUAL Page EN-1
General Guidelines
WARNING: Materials of construction are chosen based on their
chemical compatibility (or inertness) for general purposes. For exposure
to specific environments, check with chemical compatibility charts
English
before installing.
Note: PVDF and PTFE are resistant to attack from most chemicals under the
described operating conditions. However, for exposure to specific environments,
check with chemical compatibility charts before installing the XCT-8 Transducer
in your application.
Maintenance
The XCT-8 requires no special maintenance or cleaning.
Unit Repair and Excluded Liability
All changes and repairs must be done by qualified personnel and applicable safety
regulations must be followed. Please note the following:
• The user is responsible for all changes and repairs made to the device by the user or
by the user’s agent.
• All new components to be provided by Siemens Milltronics Process Instruments Inc.
• Restrict repair to faulty components only.
• Do not re-use faulty components.
Page EN-2 XCT-8 Sanitary Transducer– INSTRUCTION MANUAL 7ML19985HX62
Specifications
Measurement Range
• 0.6 m (2 ft) to 8.0 m (26 ft). Dependent on application conditions.
Temperature Range
• – 40 to 125 °C (–40 to 260 °F) at 0.6 m (2 ft)
Beam Angle
•12°
Frequency
•44 kHz
Environmental
• Location: indoor / outdoor
• Ambient temperature: – 40 to 125 °C (–40 to 260 °F)
• Altitude 2000 m maximum
• Pollution degree 4
English
Pressure
• 200 kPa (29 psi)
Temperature Sensor
•Internal
Enclosure
• PVDF with PTFE transducer face
• PTFE flange / ferrule
Mounting
• Base: 4” sanitary fitting clamp
• Conduit: 1” NPT thread or 1” BSP
Cable
• 2-wire twisted pair / braided and foil shielded, 0.55 mm2 (20 AWG), PVC jacket
• Maximum cable run: 365 m (1200 ft)
Approvals
•CE •CSA
7ML19985HX62 XCT-8 Sanitary Transducer– INSTRUCTION MANUAL Page EN-3
US/C
•C-TICK
Outline and Dimensions
”
English
1” BSP
or
1” NPT
122 mm
(4.8”)
119 mm
(4.68”)
Ferrule Considerations
The primary customer requirement is
a 4" sanitary ferrule welded to a short
standpipe on the top of the tank. The
inner standpipe wall and ends must
be smooth and free of burrs, ridges,
or seams, and
applicable regulations.
The standpipe extension between
the mating ferrule and the tank top
cannot be longer than the blanking
distance as determined by the
Siemens Milltronics transceiver. The
blanking distance is the minimum
possible measurement range listed in
Specifications
the
must comply with all
on page 3.
radiating PTFE face
XCT-8
transducer
sanitary
clamp
standpipe
topped with 4
ferrule
Do not over tighten the mounting.
Hand tightening of the mounting
hardware is sufficient.
Page EN-4 XCT-8 Sanitary Transducer– INSTRUCTION MANUAL 7ML19985HX62
blanking
distance
Mounting
Mount the transducer so that it is above the maximum material level by more than the
blanking value to ensure that accurate results are achieved. Refer to the associated
transceiver manual for information on setting the blanking value.
The transducer must be mounted so that the axis of transmission is perpendicular to the
measured surface to get the most reliable signal. See
for an example.
Always use an isolation gasket
(customer supplied) when
mounting the XCT-8. This gasket
reduces ultrasonic energy
coupling to the mounting
hardware.
Transducer must be mounted on a
4” ferrule. Do not mount by conduit
threads.
After applying the sanitary clamp,
adjust the clamp as required to
seal the transducer to the vessel
ferrule. Do not over tighten the
mounting. Hand tightening of the
mounting hardware is sufficient.
Transducer Placement
XCT - 8 transducer
isolating gasket
(customer
supplied)
sanitary clamp
4” sanitary ferrule
on page 7
English
• sanitary clamp – Siemens
Milltronics 7ML1830-1BR
May be substituted with a
clamp meeting these
specifications:
• 4” single hinge, sanitary clamp
• 4.820” interior diameter
•300 psi rated
• sanitary ferrule – customer supplied
Refer to the associated transceiver manual for details on blanking, standpipe length, and
wiring.
7ML19985HX62 XCT-8 Sanitary Transducer– INSTRUCTION MANUAL Page EN-5
Interconnection
Notes:
• Installation shall only be performed by qualified personnel and in accordance
English
Cable Extension
with local governing regulations.
• Do not route cable openly. Run cable separately in a grounded metal conduit
to protect it from ambient electrical noise.
• Use the supplied shielded, 3-wire cable to connect the transducer to the
Siemens Milltronics transceiver. Supplied cable lengths are 1 m (3 ft).
• Seal all thread connections to prevent the ingress of moisture.
• Do not run cable near high voltage or current runs, contacts, or SCR control
drives.
• The terminal blocks on the transceiver are described in the transceiver
manual.
Applies to the MiniRanger Plus and SITRANS LU/AiRanger series of transceivers.
Connect the supplied cable to a junction box and use RG–62 A/U coaxial cable from there
to the transceiver. This setup is effective for combined runs up to 365 m (1200 ft).
Siemens
Milltronics
transceiver
junction box
Twisted Pair Extension
Applies to the MultiRanger 100/200 transceiver. Extend the cable using 18 AWG shielded /
twisted pair.
black
white
Page EN-6 XCT-8 Sanitary Transducer– INSTRUCTION MANUAL 7ML19985HX62
drain / shield
junction box
Application
A
Transducer Placement
Locations (See diagram below for reference)
A: Primary location
The preferred location and to be used when possible. The center of the tank generally
gives the most reliable readings as there are fewer obstructions, minimizing false echoes.
B: Alternate location
The alternate location and used if the centre of the tank is already in use or if the tank
roof cannot hold the transducer safely.
C: Poor location
The avoided location. The echoes will reflect away from the transducer face.
English
maintain full fluid
level for full or
offset calibration.
Do not allow
.
material to enter
the blanking zone.
B
C
beam angle
span: distance between
Empty and Full levels in
measurement process.
empty level for B
location. Below this
level the echo reflects
away from the
transducer.
may require target to
obtain empty reading.
7ML19985HX62 XCT-8 Sanitary Transducer– INSTRUCTION MANUAL Page EN-7
run
tank manufacturer’s
empty level.
discharge
Placement Notes
Please refer to the tank diagram on the previous page to locate the reference numbers
cited below.
1. Beam should not detect bin bottom.
English
If this occurs use range extension parameters (on transceivers where available) to omit
false echoes. The XCT- 8 transducer operates with a beam angle of 12° and has a rise to
run ratio of approximately 10:1. This means that for every 1m (3.3 ft.) of tank height you
must allow for 0.1m (0.3 ft.) of material surface to reflect the ultrasonic pulses. In most
tanks the transducer should be centered as much as possible (without interference from
inlet) for optimum reading range.
2. Sound beam must be perpendicular to liquid surface.
When mounting the standpipe and ferrule you must ensure that the transducer face is
parallel with the liquid surface.
3. Echo has missed an improperly leveled transducer.
Similar to Note 2, ensure that the standpipe and ferrule are mounted so that the
transducer is face level with the measured liquid.
4. Calibrate under normal conditions.
When performing an empty or full calibration, the tank must contain its normal vapour
and be at its normal temperature.
Notes:
• The transducer is to be used only in the manner outlined in this instruction
manual.
• This transducer is recommended for use with liquids only.
Process Temperature Variations
The PTFE facing is constructed to allow for intense "clean-in-place" applications. When
installing the XCT-8 transducer into a system that uses a high temperature "clean-inplace" process you must account for temperature variations in the transducer.
The temperature sensor’s time constant is 45 minutes. This means that it takes 45 minutes
to change 63.2% of the temperature difference between the transducer and ambient.
Consult your engineering handbook for details on temperature constants.
Page EN-8 XCT-8 Sanitary Transducer– INSTRUCTION MANUAL 7ML19985HX62
Einleitung
Dieses Produkt ist vorgesehen zum Gebrauch in Industrieumgebungen. Bei Verwendung in Wohngebieten kann es zu Störungen von
verschiedenen Funkanwendungen kommen.
Die Ultraschallsensoren Baureihe Echomax XCT-8
werden zusammen mit Siemens Milltronics Ultra-
schall-Füllstandmessumformern betrieben.
Der Sensor wandelt die elektrische Energie des
Sendeimpulses vom Messumformer in akustische
Energie um. Die akustische Energie des Echos wird
dann wieder in elektrische Energie für den Messumformer zurückgewandelt. Zur Auswertung des
Signals verwendet der Siemens Milltronics Messumformer die von Siemens Milltronics entwickelte,
patentierte Sonic Intelligence®. Die Leistung des
Ultraschallimpulses nimmt am 12° Schallkegel von
der Sendefläche um –3 dB ab. Innerhalb dieses
Kegels dürfen sich keine Gegenstände befinden,
die als Störechos ausgewertet werden könnten.
Ultraschallsensor
Deutsch
Sensor-
sendefläche
-3db Grenzlinie
Die XCT-8 Sensoren sind mit einem integrierten
Temperaturfühler ausgestattet. Dieser meldet dem
Messumformer die Temperatur am Ultraschallsensor. Der Anschluss ist eindeutig, sowohl Ultraschallals auch Temperaturkomponenten des Sensors verwenden dieselben Adern in der Leitung. Dies
ermöglicht dem Siemens Milltronics Messumformer eine automatische Kompensation der Schallgeschwindigkeitskonstante bei Temperaturschwankungen.
Die Sensorsendefläche aus PTFE ermöglicht den Einsatz des Sensors in Applikationen mit
Reinigungszyklen der Lebensmittelindustrie.
Übertragungsachse, senkrecht zur
Sensorsendefläche
Messumformer
Die XCT-8 Sanitärsensoren sind mit folgenden Messumformern kompatibel:
• MiniRanger Plus
• MultiRanger 100/200
•HydroRanger 200
• SITRANS LU 01
• SITRANS LU 02
• SITRANS LU 10
•AiRanger SPL
•AiRanger DPL
•AiRanger XPL
7ML19985HX62 XCT-8 Sanitärsensor– BETRIEBSANLEITUNG Seite DE-1
Allgemeine Richtlinien
WARNUNG: Die Werkstoffe werden entsprechend ihrer chemischen
Beständigkeit (oder Trägheit) für allgemeine Zwecke gewählt. Bei Einsatz
in besonderen Umgebungen prüfen Sie vor Installation die chemische
Beständigkeit anhand einschlägiger Tabellen.
Hinweis: PVDF und PTFE sind unter den beschriebenen Einsatzbedingungen
gegen die meisten Chemikalien beständig. Vor der Installation des XCT-8
Sensors sollten Sie jedoch, bei Einsatz in besonderen Umgebungen, zunächst
die chemische Beständigkeit anhand einschlägiger Tabellen prüfen.
Wartung
Deutsch
Der XCT-8 erfordert keine besondere Wartung oder Reinigung.
Gerätereparatur und Haftungsausschluss
Alle Änderungen und Reparaturen müssen von qualifiziertem Personal unter Beachtung
der jeweiligen Sicherheitsbestimmungen vorgenommen werden. Bitte beachten Sie:
• Der Anwender ist für alle vom Anwender oder seinem Bevollmächtigten
durchgeführten Änderungen und Reparaturen am Gerät verantwortlich.
• Alle neuen Bauteile sind von Siemens Milltronics Process Instruments Inc. bereit zu
stellen.
• Reparieren Sie lediglich defekte Bauteile.
• Defekte Bauteile dürfen nicht wiederverwendet werden.
Seite DE-2 XCT-8 Sanitärsensor– BETRIEBSANLEITUNG 7ML19985HX62
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