Burkert 8136 User Manual [en, de, fr]
Operating Instructions
LEVEL TRANSMITTER
8136
4 … 20 mA/HART - two-wire
Contents
Contents
1 About this document
1.1 Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Target group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 Symbolism used. . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 For your safety
2.1 Authorised personnel . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Appropriate use . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Warning about misuse . . . . . . . . . . . . . . . . . . . . . . .
2.4 General safety instructions . . . . . . . . . . . . . . . . . . . .
2.5 CE conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.6 NAMUR recommendations . . . . . . . . . . . . . . . . . . . .
2.7 Radio license for Europe. . . . . . . . . . . . . . . . . . . . . .
2.8 Radio license for USA/Canada . . . . . . . . . . . . . . . . .
3 Product description
3.1 Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Principle of operation . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Packaging, transport and storage . . . . . . . . . . . . . . .
3.4 Accessories and replacement parts . . . . . . . . . . . . . .
4 Mounting
4.1 General instructions . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 Collar or adapter flange . . . . . . . . . . . . . . . . . . . . . .
4.3 Mounting preparations, mounting strap. . . . . . . . . . . .
4.4 Instructions for installation . . . . . . . . . . . . . . . . . . . . .
4
4
4
5
5
5
5
6
6
6
6
7
8
8
9
10
10
11
12
5 Connecting to power supply
5.1 Preparing the connection . . . . . . . . . . . . . . . . . . . . .
5.2 Connect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.3 Wiring plan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.4 Switch-on phase. . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Set up with the indicating and adjustment module
6.1 Insert indicating and adjustment module. . . . . . . . . . .
6.2 Adjustment system . . . . . . . . . . . . . . . . . . . . . . . . . .
6.3 Parameter adjustment. . . . . . . . . . . . . . . . . . . . . . . .
6.4 Saving the parameter adjustment data . . . . . . . . . . . .
7 Setup with PACTware
7.1 Connect the PC . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2 Parameter adjustment with PACTware . . . . . . . . . . . .
7.3 Saving the parameter adjustment data . . . . . . . . . . . .
8 Set up with other systems
8.1 DD adjustment programs . . . . . . . . . . . . . . . . . . . . .
8.2 Communicator 375, 475 . . . . . . . . . . . . . . . . . . . . . .
2 LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire
25
26
27
28
29
30
31
44
46
46
46
47
47
41783-EN-120316
9 Diagnosis, Asset Management and service
9.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2 Diagnosis memory . . . . . . . . . . . . . . . . . . . . . . . . . .
9.3 Asset Management function . . . . . . . . . . . . . . . . . . .
9.4 Remove interferences. . . . . . . . . . . . . . . . . . . . . . . .
9.5 Exchanging the electronics module . . . . . . . . . . . . . .
9.6 How to proceed in case of repair. . . . . . . . . . . . . . . .
10 Dismounting
10.1 Dismounting steps . . . . . . . . . . . . . . . . . . . . . . . . . .
10.2 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11 Supplement
11.1 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11.2 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents
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48
49
53
57
57
58
58
59
67
Safety instructions for Ex areas
Please note the Ex-specific safety information for installation and
operation in Ex areas. These safety instructions are part of the
operating instructions manual and come with the Ex-approved
instruments.
Editing status: 2012-02-29
41783-EN-120316
LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire 3
1 About this document
1 About this document
1.1 Function
This operating instructions manual provides all the information you
need for mounting, connection and setup as well as important
instructions for maintenance and fault rectification. Please read this
information before putting the instrument into operation and keep this
manual accessible in the immediate vicinity of the device.
1.2 Target group
This operating instructions manual is directed to trained qualified
personnel. The contents of this manual should be made available to
these personnel and put into practice by them.
1.3 Symbolism used
Information, tip, note
This symbol indicates helpful additional information.
Caution: If this warning is ignored, faults or malfunctions can
result.
Warning: If this warning is ignored, injury to persons and/or serious
damage to the instrument can result.
Danger: If this warning is ignored, serious injury to persons and/or
destruction of the instrument can result.
Ex applications
This symbol indicates special instructions for Ex applications.
l List
The dot set in front indicates a list with no implied sequence.
à Act
1 Sequence
4 LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire
ion
This arrow indicates a single action.
Numbers set in front indicate successive steps in a procedure.
41783-EN-120316
2 For your safety
2 For your safety
2.1 Authorised personnel
All operations described in this operating instructions manual must be
carried out only by trained specialist personnel authorised by the plant
operator.
During work on and with the device the required personal protective
equipment must always be worn.
2.2 Appropriate use
LEVEL TRANSMITTER 8136 is a sensor for continuous level
measurement.
You can find detailed information on the application range in chapter
"Product description".
Operational reliability is ensured only if the instrument is properly used
according to the specifications in the operating instructions manual as
well as possible supplementary instructions.
2.3 Warning about misuse
Inappropriate or incorrect use of the instrument can give rise to
application-specific hazards, e.g. vessel overfill or damage to system
components through incorrect mounting or adjustment.
2.4 General safety instructions
This is a state-of-the-art instrument complying with all prevailing
regulations and guidelines. The instrument must only be operated in a
technically flawless and reliable condition. The operator is responsible
for the trouble-free operation of the instrument.
During the entire duration of use, the user is obliged to determine the
compliance of the necessary occupational safety measures with the
current valid rules and regulations and also take note of new
regulations.
The safety instructions in this operating instructions manual, the
national installation standards as well as the valid safety regulations
and accident prevention rules must be observed by the user.
For safety and warranty reasons, any invasive work on the device
beyond that described in the operating instructions manual may be
carried out only by personnel authorised by the manufacturer. Arbitrary
conversions or modifications are explicitly forbidden.
The safety approval markings and safety tips on the device must also
be observed.
41783-EN-120316
LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire 5
2 For your safety
Depending on the instrument version, the emitting frequencies are in
the C or K band range. The low emitting frequencies are far below the
internationally approved limit values. When used correctly, there is no
danger to health.
2.5 CE conformity
The device fulfills the legal requirements of the applicable EC
guidelines. With the CE mark, we provide confirmation of successful
testing.
2.6 NAMUR recommendations
NAMUR is the automation technology user association in the process
industry in Germany. The published NAMUR recommendations are
accepted as the standard in field instrumentation.
The device fulfills the requirements of the following NAMUR
recommendations:
l NE 21 – Electromagnetic compatibility of equipment
l NE 43 – Signal level for malfunction information from measuring
transducers
l NE 53 – Compatibility of field devices and indicating/adjustment
components
l NE 107 - Self-monitoring and diagnosis of field devices
For further information see
www.namur.de.
2.7 Radio license for Europe
The instrument is approved according to EN 302372-1/2 (2006-04) for
use in closed vessels.
2.8 Radio license for USA/Canada
The instrument is in conformity with part 15 of the FCC regulations.
Take note of the following two regulations:
l The device must not generate interfering emissions, and
l The device must be non-sensitive to interfering immissions,
including those that may cause undesirable operating conditions.
Modifications not expressly approved by the manufacturer will lead to
expiry of the operating licence according to FCC/IC.
The instrument is in conformity with RSS-210 of the IC regulations.
The instrument may only be operated in closed vessels made of metal,
concrete, or fibre-reinforced plastic.
6 LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire
41783-EN-120316
3 Product description
2
1
10
11
12
13
9
8
3
4
5
6
7
3.1 Structure
3 Product description
Type
label
The type label contains the most important data for identification and
use of the instrument:
Fig. 1: Structure of the type label (example)
1 Instrument type
2 Product code
3 Approvals
4 Process and ambient temperature, process pressure
5 Signal output electronics, voltage supply
6 Protection rating
7 Order number
8 Serial number of the instrument
9 Symbol of the device protection class
10 ID numbers, instrument documentation
11 Note to observe the instrument documentation
12 Notified authority for CE marking
13 Approval directive
Sco
pe of the operating
instructions manual
Sco
pe of delivery
This operating instructions manual applies to the following instrument
versions:
l Hardware from 2.1.1
l Software from 4.4.0
The scope of delivery encompasses:
l Radar sensor
l Documentation
- this operating instructions manual
- Operating instructions manual "Indicating and adjustment
module" (optional)
- Ex-specific "Safety instructions" (with Ex versions)
- if necessary, further certificates
41783-EN-120316
LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire 7
3 Product description
3.2 Principle of operation
cation area
Appli
Func
tional principle
Packag
ing
The LEVEL TRANSMITTER 8136 is a radar sensor for continuous
level measurement of liquids under simple process conditions.
Dependent on the application range, different versions are used:
l Level measurement of aggressive liquids in small vessels:
encapsulated antenna system
l Flow measurement in open flumes or gauge measurement of
bodies of water: Plastic horn antenna
l Products with an ε
l Products with an ε
value ≥1.8: Standard electronics
r
value ≥1.5, < 1.8; applications with very poor
r
reflective properties: Electronics with increased sensitivity
The actual values that can be reached depend on the measurement
conditions, the antenna system or the standpipe or bypass.
The antenna of the radar sensor emits short radar pulses with a
duration of approx. 1 ns. These pulses are reflected by the product
and received by the antenna as echoes. The transit time of the radar
pulses from emission to reception is proportional to the distance and
hence to the level. The determined level is converted into an
appropriate output signal and outputted as measured value.
3.3 Packaging, transport and storage
Your instrument was protected by packaging during transport. Its
capacity to handle normal loads during transport is assured by a test
according to DIN EN 24180.
The packaging of standard instruments consists of environmentfriendly, recyclable cardboard. For special versions, PE foam or PE foil
is also used. Dispose of the packaging material via specialised
recycling companies.
Tr
ansport
Transport must be carried out under consideration of the notes on the
transport packaging. Nonobservance of these instructions can cause
damage to the device.
Tr
ansport inspection
The delivery must be checked for completeness and possible transit
damage immediately at receipt. Ascertained transit damage or
concealed defects must be appropriately dealt with.
Stora
ge
Up to the time of installation, the packages must be left closed and
stored according to the orientation and storage markings on the
outside.
Unless otherwise indicated, the packages must be stored only under
the following conditions:
l Not in the open
l Dry and dust free
l Not exposed to corrosive media
8 LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire
41783-EN-120316
Stora
ge and transport
temperature
3 Product description
l Protected against solar radiation
l Avoiding mechanical shock and vibration
l Storage and transport temperature see chapter "Supplement -
Technical data - Ambient conditions"
l Relative humidity 20 … 85 %
3.4 Accessories and replacement parts
Indic
ating and adjust-
ment module
Electro
nics module
The indicating and adjustment module is used for measured value
indication, adjustment and diagnosis. It can be inserted into the sensor
and removed at any time.
You can find further information in the operating instructions "Indicating
and adjustment module" (Document-ID 41787).
The electronics module is a replacement part of the LEVEL TRANSMITTER series. An own version is available for each type of signal
output.
You can find further information in the operating instructions
"Electronics module LEVEL TRANSMITTER 813X" (Document-ID
41786).
41783-EN-120316
LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire 9
4 Mounting
4 Mounting
4.1 General instructions
wing in
Scre
Moisture
Suita
bility for the proc-
ess conditions
With instruments with threaded process fitting, suitable tools must be
applied for tightening the hexagon.
Warning:
The housing must not be used to screw the instrument in! Applying
tightening force can damage internal parts of the housing.
Use the recommended cables (see chapter "Connecting to power
supply") and tighten the cable gland.
You can give your instrument additional protection against moisture
penetration by leading the connection cable downward in front of the
cable entry. Rain and condensation water can thus drain off. This
applies mainly to outdoor mounting as well as installation in areas
where high humidity is expected (e.g. through cleaning processes) or
on cooled or heated vessels.
Make sure that all parts of the instrument exposed to the process, in
particular the active measuring component, process seal and process
fitting, are suitable for the existing process conditions. These include
above all the process pressure, process temperature as well as the
chemical properties of the medium.
You can find the specifications in chapter "Technical data" and on the
type label.
4.2 Collar or adapter flange
For mounting the instrument on a socket, a combi compression flange
for DN 80 (ASME 3" or JIS 80) is also available for retro fitting.
Optionally, the instrument can be also equipped with an adapter flange
from DN 100 (ASME 4" or JIS 100).
With the housing versions plastic, aluminium single chamber and
stainless steel, the collar flange can be placed directly over the
housing. With the aluminium double chamber housing, retroactive
mounting in this way is not possible - the mounting type must be
specified with the order.
You can find drawings of these mounting options in chapter
"Dimensions".
10 LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire
41783-EN-120316
4 Mounting
Fig. 2: Flange mounting of the radar sensor
4.3 Mounting preparations, mounting strap
The mounting strap enables simple mounting on the vessel wall or silo
top. It is suitable for wall, ceiling or boom mounting. Especially in open
vessels this is a very easy and effective way to align the sensor to the
bulk solid surface.
The strap is supplied unassembled and must be screwed to the sensor
before setup with three hexagon screws M5 x 10 and spring washers.
Max. torque, see chapter "Technical data". Required tools: Allen
wrench size 4.
There are two ways to screw the strap onto the sensor. Depending on
the selected version, the sensors can be swivelled in the strap as
follows:
l Single chamber housing
- Angle of inclination 180°, infinitely variable
- Angle of inclination in three steps 0°, 90° and 180°
l Double chamber housing
- Angle of inclination 90°, infinitely variable
- Angle of inclination in two steps 0° and 90°
41783-EN-120316
LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire 11
4 Mounting
Fig. 3: Adjustment of the angle of inclination
Fig. 4: Turning by fastening in the centre
4.4 Instructions for installation
Ti
ght installation of the
plastic horn antenna
Polaris
ation plane
12 LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire
For tight installation of the version with plastic horn antenna with
compression or adapter flange, the following conditions must be
fulfilled:
1 Use suitable flat seal, e.g. of EPDM with Shore hardness 25 or 50
2 Make sure the number of flange screws corresponds to the
number of flange holes
3 Tighten all screws with the torque stated in the technical data
The emitted radar impulses of the radar sensor are electromagnetic
waves. The polarisation plane is the direction of the electrical wave
component. By turning the instrument in the connection flange or
mounting boss, the polarisation can be used to reduce the effects of
false echoes.
The position of the polarisation plane is marked on the process fitting
of the instrument.
41783-EN-120316
1
1
4 Mounting
Fig. 5: P osition of the polarisation plane with LEVEL TRANSMITTER 8136 with
encapsulated antenna system
1 Marking hole
Fig. 6: P osition of the polarisation plane with LEVEL TRANSMITTER 8136 with
plastic horn antenna
1 Marking bars
Mountin
g position
When mounting the sensor, keep a distance of at least 200 mm
(7.874 in) to the vessel wall. If the sensor is installed in the center of
dished or round vessel tops, multiple ec hoes can arise. These can,
however, be suppressed by an appropriate adjustment (see chapter
"Setup").
If you cannot keep this distance you should carry out a false echo
storage before setup. This applies mainly if buildup on the vessel wall
is expected. In this case, w e recommend repeating a false echo
storage later with existing buildup.
41783-EN-120316
LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire 13
> 200 mm
(7.87
")
4 Mounting
Fig. 7: Mounting of the radar sensor on round vessel tops
In vessels with conical bottom it can be advantageous to mount the
sensor in the center of the vessel, as measurement is then possible
down to the lowest point of the vessel bottom.
Fig. 8: Mounting of the radar sensor on vessels with conical bottom
Inflow
ing medium
Do not mount the instruments in or above the filling stream. Make sure
that you detect the product surface, not the inflowing product.
14 LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire
41783-EN-120316
Fig. 9: Mounting of the radar sensor with inflowing medium
4 Mounting
ket with plastic horn
Soc
antenna
A corresponding collar flange for DN 80 (ASME 3" or JIS 80) as well as
a suitable adapter flange are available for mounting LEVEL TRANS-
MITTER 8136.
With the housing versions plastic, aluminium single chamber and
stainless steel, the collar flange can be placed directly over the
housing. With the aluminium double chamber housing, retroactive
mounting in this way is not possible - the mounting type must be
specified with the order.
Information:
The socket should be as short as possible and the socket end should
be rounded. Interfering reflections from the vessel socket are thus
minimised.
Fig. 10: Recommended socket mounting
41783-EN-120316
LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire 15
d
h
4 Mounting
If the medium has good reflective properties, LEVEL TRANSMITTER
8136 can also be mounted on a longer socket piece. Recommended
values for socket heights are specified in the following illustration. You
must carry out a false echo storage afterwards.
The below charts specify the max. socket piece length h depending on
the diameter d.
Socket diameter d Socket length h
80 mm 300 mm
100 mm 400 mm
150 mm 500 mm
Socket diameter d Socket length h
3" 11.8 in
4" 15.8 in
6" 19.7 in
Tip:
In new facilities it is useful to incline the vessel socket in the direction
of the outlet. False reflections from the vessel wall are thus reduced
and measurement all the way down to the bottom of the conical outlet
is possible.
16 LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire
41783-EN-120316
Fig. 12: Alignment in silos
ca. 10 mm
4 Mounting
ket with encapsu-
Soc
lated antenna system
The socket piece should be dimensioned in such a way that the
antenna end protrudes at least 10 mm (0.4 in) out of the socket.
Fig. 13: Recommended socket mounting
If the reflective properties of the medium are good, you can mount
LEVEL TRANSMITTER 8136 on sockets which are higher than the
length of the antenna. You will find recommended values for socket
heights in the following illustration. The socket end should be smooth
and burr-free, if possible also rounded. After installation you must carry
out a false echo storage.
41783-EN-120316
LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire 17
d
h
d
h
1½"
50 mm/2"
80 mm/3"
100 mm/4"
150 mm/6"
200 mm
250 mm
300 mm
500 mm
800 mm
4 Mounting
Fig. 14: Deviating socket dimensions
Sen
sor orientation
Vess
el installations
Align the sensor in liquids as vertical as possible to the product surface
to achieve optimum measurement results.
Fig. 15: Alignment in liquids
The mounting location of the radar sensor should be a place where no
other equipment or fixtures cross the path of the microwave signals.
Vessel installations, such as e.g. ladders, limit switches, heating
spirals, struts, etc., can cause false echoes and impair the useful echo.
Make sure when planning your measuring site that the radar sensor
has a "clear view" to the measured product.
In case of existing vessel installations, a false echo storage should be
carried out during setup.
If large vessel installations such as struts or supports cause false
echoes, these can be attenuated through supplementary measures.
Small, inclined sheet metal baffles above the installations scatter the
radar signals and prevent direct interfering reflections.
41783-EN-120316
18 LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire
Fig. 16: Cover smooth profiles with deflectors
4 Mounting
Agitato
Foam
rs
generation
If there are agitators in the vessel, a false signal memory should be
carried out with the agitators in motion. This ensures that the interfering
reflections from the agitators are saved with the blades in different
positions.
Fig. 17: Agitators
Through the action of filling, stirring and other processes in the vessel,
compact foams that considerably damp the emitted signals may form
on the product surface.
If foams are causing measurement errors, the biggest possible radar
antennas, the electronics with increased sensitivity or low frequency
radar sensors (C band) should be used.
As an alternative, sensors with guided microwave can be used. These
are unaffected by foam generation and are best suited for such
applications.
41783-EN-120316
LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire 19
1
2
3
100%
4
5
8
6
7
0%
9
4 Mounting
rement in a surge
Measu
pipe
When using a surge pipe in a vessel, influences from vessel
installations and turbulences can be excluded. Under these prerequisites, the measurement of products with low dielectric values (ε
r
value ≥ 1.6) is possible. In very adhesive products, measurement in a
surge pipe is not recommended.
Fig. 18: Configuration surge pipe
1 Radar sensor
2 Marking of the polarisation direction
3 Thread or flange on the instrument
4 Vent hole
5 Holes
6 Weld joint
20 LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire
7 Welding neck flange
8 Ball valve with complete opening
9 Fastening of the surge pipe
Instructions for orientation:
l Note marking of the polarisation plane on the sensor
l With threaded fitting, the marking is on the hexagon, with flange
connection between the two flange holes
l All holes in the surge pipe must be in one plane with this marking
Instructions for the measurement:
41783-EN-120316
4 Mounting
l The 100 % point must be below the upper vent hole and the
antenna edge
l The 0 % point is the end of the surge pipe
l The tube diameter must be at least DN 40 or 1½" with antenna
size 40 mm (1½")
l For the parameter adjustment, select "Application standpipe" and
enter the tube diameter to compensate errors due to running time
shift
l A false signal suppression with integrated sensor is recommended
but not mandatory
l The measurement through a ball valve with complete run is
possible
Constructional requirements on the surge pipe:
l Material metal, smoother inner tube
l Preferably pultruded or straight beaded stainless steel tube
l Welded joint should be straight and lie in one axis with the holes
l Flanges are welded to the tube according to the orientation of the
polarisation level
l In case of a extension with a welding neck flange or pipe collar as
well as when a ball valve is used, the inner surfaces should be
aligned and accurately joined together
l Gap size with junctions ≤ 0.1 mm
l Do not weld through the pipe wall. The surge pipe must remain
smooth inside. Roughness and beads on the inside caused by
unintentional penetration should be removed since they cause
strong false echoes and encourage buildup
l Surge pipes must extend all the way down to the requested min.
level, as measurement is only possible within the tube
l Diameter of holes ≤ 5 mm, any number OK, on one side or
completely through
l The antenna diameter of the sensor should correspond to the
inner diameter of the tube
l Diameter should be constant over the complete length
Measu
rement in the by-
pass
An alternative to measurement in a surge pipe is measurement in a
bypass tube outside of the vessel.
41783-EN-120316
LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire 21
0 %
100 %
1
2
5
4
3
6
4 Mounting
Fig. 19: Configuration bypass
1 Radar sensor
2 Marking of the polarisation direction
3 Instrument flange
4 Distance sensor reference plane to upper tube connection
5 Distance of the tube connections
6 Ball valve with complete opening
Instructions for orientation:
l Note marking of the polarisation plane on the sensor
l With threaded fitting, the marking is on the hexagon, with flange
connection between the two flange holes
l The pipe connections to the vessel must be in one plane with this
marking
Instructions for the measurement:
l The 100 % point must not be above the upper tube connection to
the vessel
l The 0 % point must not be below the lower tube connection to the
vessel
l Min. distance sensor reference plane to the upper edge upper
tube connection > 300 mm
l The tube diameter must be at least DN 40 or 1½" with antenna
size 40 mm (1½")
l For the parameter adjustment, select "Application standpipe" and
enter the tube diameter to compensate errors due to running time
shift
41783-EN-120316
22 LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire
h
max
d
min
≥ 2 mm x h
max
90°
4
3 ... 4 h
max
≥ 50 mm
90
°
2
3
1
4 Mounting
l A false signal suppression with integrated sensor is recommended
but not mandatory
l The measurement through a ball valve with complete run is
possible
Constructional requirements on the bypass pipe:
l Material metal, smoother inner tube
l In case of an extremely rough tube inner surface, use an inserted
tube (tube in tube) or a radar sensor with tube antenna
l Flanges are welded to the tube according to the orientation of the
polarisation level
l Gap size with junctions ≤ 0.1 mm, for example, when using a ball
valve or intermediate flanges with single pipe sections
l The antenna diameter of the sensor should correspond to the
inner diameter of the tube
l Diameter should be constant over the complete length
ow measurement with
Fl
rectangular flume
The short examples give you introductory information on the flow
measurement. Detailed planning information is available from flume
manufacturers and in special literature.
Fig. 20: Flow measurement with rectangular flume: d
sensor (see chapter "Technical data"); h
flume
= max. filling of the rectangular
max.
1 Overflow orifice (side view)
2 Headwater
3 Tail water
4 Overfall orifice (view from bottom water)
= min. distance of the
min.
In general, the following points must be observed:
l Install the sensor on the headwater side
l Installation in the centre of the flume and vertical to the liquid
surface
l Distance to the overfall orifice
l Distance of orifice opening above ground
l Min. distance of the orifice opening to bottom water
41783-EN-120316
LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire 23
l Min. distance of the sensor to max. storage level
2
3 ... 4 x h
max
90°
h
max
d
1
B
4 Mounting
Fl
ow measurement with
Khafagi Venturi flume
Fig. 21: Flow measurement with Khafagi-Venturi flume: d = Min. distance to
sensor; h
= max. filling of the flume; B = tightest constriction in the flume
max.
1 Position sensor
2 Venturi flume
In general, the following points must be observed:
l Installation of the sensor at the inlet side
l Installation in the centre of the flume and vertical to the liquid
surface
l Distance to the Venturi flume
l Min. distance of the sensor to max. storage level
41783-EN-120316
24 LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire
5 Connecting to power supply
5 Connecting to power supply
5.1 Preparing the connection
Saf
ety instructions
Volta
ge supply
Conne
ction cable
Always keep in mind the following safety instructions:
l Connect only in the complete absence of line voltage
l If voltage surges are expected, install overvoltage arresters
Power supply and current signal are carried on the same two-wire
cable. The voltage supply range can differ depending on the
instrument version.
The data for power supply are specified in chapter "Technical data".
Provide a reliable separation between the supply circuit and the mains
circuits according to DIN VDE 0106 part 101.
Keep in mind the following additional factors that influence the
operating voltage:
l Output voltage of the power supply unit can be lower under
nominal load (with a sensor current of 20.5 mA or 22 mA in case of
fault message)
l Influence of additional instruments in the circuit (see load values in
chapter "Technical data")
The instrument is connected with standard two-wire cable without
screen. If electromagnetic interference is expected which is above the
test values of EN 61326-1 for industrial areas, screened cable should
be used.
For instruments with housing and cable gland, use cable with round
cross-section. A cable outer diameter of 5 … 9 mm (0.2 … 0.35 in)
ensures the seal effect of the cable gland. If you are using cable with a
different diameter, exchange the seal or use a suitable cable gland.
We generally recommend the use of screened cable for HART
multidrop mode.
Cable
gland ½ NPT
Cable
screening and
grounding
With plastic housing, the NPT cable gland or the Conduit steel tube
must be screwed without grease into the threaded insert.
Max. torque for all housings see chapter "Technical data"
If screened cable is necessary, connect the cable screen on both ends
to ground potential. In the sensor, the screen must be connected
directly to the internal ground terminal. The ground terminal on the
outside of the housing must be connected to the potential equalisation
(low impedance).
41783-EN-120316
LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire 25
5 Connecting to power supply
Cable
screening and
grounding
If potential equalisation currents are expected, the connection on the
processing side must be made via a ceramic capacitor (e. g. 1 nF,
1500 V). The low frequency potential equalisation currents are thus
suppressed, but the protective effect against high frequency interference signals remains.
If screened cable is necessary, connect the cable screen on both ends
to ground potential. In the sensor, the screen must be connected
directly to the internal ground terminal. The ground terminal on the
outside of the housing must be connected to the potential equalisation
(low impedance).
If potential equalisation currents are expected, the connection on the
processing side must be made via a ceramic capacitor (e. g. 1 nF,
1500 V). The low frequency potential equalisation currents are thus
suppressed, but the protective effect against high frequency interference signals remains.
5.2 Connect
Conne
ction technology
Conne
ction procedure
The voltage supply and signal output are connected via the springloaded terminals in the housing.
The connection to the indicating and adjustment module or to the
interface adapter is carried out via contact pins in the housing.
Proceed as follows:
1 Unscrew the housing cover
2 If an indicating and adjustment module is installed, remove it by
turning it slightly to the left.
3 Loosen compression nut of the cable entry
4 Remove approx. 10 cm (4 in) of the cable mantle, strip approx.
1 cm (0.4 in) of insulation from the ends of the individual wires
41783-EN-120316
26 LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire
5 Connecting to power supply
5 Insert the cable into the sensor through the cable entry
Fig. 22: Connection steps 5 and 6
6 Insert the wire ends into the terminals according to the wiring plan
Information:
Solid cores as well as flexible cores with cable end sleeves are
inserted directly into the terminal openings. In case of flexible cores
without end sleeves, press the terminal head with a small screwdriver;
the terminal opening is freed. When the screwdriver is released, the
terminal closes again.
7 Check the hold of the wires in the terminals by lightly pulling on
them
8 Connect the screen to the internal ground terminal, connect the
outer ground terminal to potential equalisation
9 Tighten the compression nut of the cable entry. The seal ring must
completely encircle the cable
10 Screw the housing cover back on
The electrical connection is finished.
Information:
The terminal block is pluggable and can be removed from the
electronics. To do this, lift the terminal block with a small screwdriver
and pull it out. When inserting the terminal block again, you should
hear it snap in.
5.3 Wiring plan
The following illustration applies to the non-Ex as well as to the Ex-ia
version.
41783-EN-120316
LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire 27
5
1
2
+
( )
(-)
6 7 8
4...20mA
2
3
4
1
5 Connecting to power supply
nics compart-
Electro
ment
Fig. 23: Electronics and connection compartment, single chamber housing
1 Voltage supply, signal output
2 For indicating and adjustment module or interface adapter
3 For external indicating and adjustment unit
4 Ground terminal for connection of the cable screen
5.4 Switch-on phase
After connecting the instrument to power supply or after a voltage
recurrence, the instrument carries out a self-check for approx. 30 s:
l Internal check of the electronics
l Indication of the instrument type, hardware and software version,
measurement loop name on the display or PC
l Indication of the status message "F 105 Determine measured
value" on the display or PC
l The output signal jumps to the set error current
As soon as a plausible measured value is found, the corresponding
current is outputted to the signal cable. The value corresponds to the
actual level as well as the settings already carried out, e.g. factory
setting.
28 LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire
41783-EN-120316
6 Set up with the indicating and adjustment module
6 Set up with the indicating and adjustment
module
6.1 Insert indicating and adjustment module
The indicating and adjustment module can be inserted into the sensor
and removed any time. Four positions displaced by 90° can be
selected. It is not necessary to interrupt the power supply.
Proceed as follows:
1 Unscrew the housing cover
2 Place the indicating and adjustment module in the requested
position onto the electronics and turn to the right until it snaps in
3 Screw housing cover with inspection window tightly back on
Removal is carried out in reverse order.
The indicating and adjustment module is powered by the sensor, an
additional connection is not necessary.
Fig. 24: Insertion of the indicating and adjustment module with single chamber
housing
Note:
If you intend to retrofit the instrument with an indicating and adjustment
module for continuous measured value indication, a higher cover with
an inspection glass is required.
41783-EN-120316
LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire 29
1
2
6 Set up with the indicating and adjustment module
6.2 Adjustment system
Fig. 25: Indicating and adjustment elements
1 LC display
2 Adjustment keys
Key
functions
l [OK] key:
- Move to the menu overview
- Confirm selected menu
- Edit parameter
- Save value
l [->] key:
- Presentation change measured value
- Select list entry
- Select editing position
l [+] key:
- Change value of the parameter
l [ESC] key:
- interrupt input
- Return to higher-ranking menu
Adjus
tment system
The sensor is adjusted via the four keys of the indicating and
adjustment module. The LC display indicates the individual menu
items. The functions of the individual keys are shown in the above
illustration. Approx. 10 minutes after the last pressing of a key, an
automatic reset to measured value indication is triggered. Any values
not confirmed with [OK] will not be sa ved.
30 LEVEL TRANSMITTER 8136 • 4 … 20 mA/HART - two-wire
41783-EN-120316
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