Magnetrol Echotel 335 Assembly instructions

Echotel®Series 335/338
Compact Ultrasonic Transmitter
INSTALLATION
and
PROGRAMMING MANUAL

1
C O N T E N T S
1. INTRODUCTION............................................................................................................................................................. 2
2. ORDER CODES ............................................................................................................................................................... 2
3. TECHNICAL DATA........................................................................................................................................................ 3
3.1 Data of Echotel for liquids ............................................................................................................................................................. 3
4. INSTALLATION.............................................................................................................................................................. 4
4.1 Liquid Level Measurement ............................................................................................................................................................. 4
4.2 Open Channel Flow Measurement ................................................................................................................................................ 5
4.3 Electrical Connection ..................................................................................................................................................................... 5
5. PROGRAMMING ............................................................................................................................................................ 5
5.1 Touch-Magnet Programming (only for level transmitters for liquids)......................................................................................... 6
5.2 Programming of the Echotel by the 046-8108-001 Programming Module ................................................................................. 8
5.2.1 The 046-8108-001 Programming Module ......................................................................................................................................................8
5.2.2 Programming with the 046-8108-001 Programming Module.......................................................................................................................9
5.2.3 Indications of the 046-8108-001 Programming Module and the LEDs ........................................................................................................9
5.2.4 Current Output Scaling ..................................................................................................................................................................................10
5.2.5 QUICKSET ....................................................................................................................................................................................................11
5.2.6 Full Parameter Access....................................................................................................................................................................................12
6. PARAMETERS – DESCRIPTIONS AND PROGRAMMING................................................................................ 12
6.1 Measurement Configuration......................................................................................................................................................... 12
6.2 Current Output.............................................................................................................................................................................. 16
6.3 Relay Output ................................................................................................................................................................................. 16
6.4 Measurement Optimisation .......................................................................................................................................................... 17
6.5 Volume Calculation ...................................................................................................................................................................... 20
6.6 Volume Flow Measuring .............................................................................................................................................................. 20
6.7 32-Point Linearisation Curve....................................................................................................................................................... 23
6.8 Informational Parameters ............................................................................................................................................................ 23
6.9 Additional Open Channel Flow Metering Features.................................................................................................................... 24
6.10 Test Parameters ............................................................................................................................................................................ 24
6.11 Simulation Mode ........................................................................................................................................................................... 25
6.12 Access Lock ................................................................................................................................................................................... 25
7. ERROR CODES ............................................................................................................................................................. 25
SOUND VELOCITIES IN DIFFERENT GASES ..............................................................................................................26

2
1. INTRODUCTION
Application
The Echotel compact ultrasonic level transmitters from MAGNETROL
are an excellent tool for the level measurement of liquids.
Level measurement technology based on the non-contacting ultrasonic
principle is especially suited for applications where, for any reason, no
physical contact can be established to the surface of the material to be
measured.
Such reasons may include corrosive attack by the process medium
against the measuring device material (acids), possible contamination
(sewage) or particles of the process medium adhering to the measuring
device (adhesive materials).
A Total beam angle of 5°-7°at –3 dB as is featured by most of
Magnetrol’s transducers ensuring a reliable measurement in
narrow silos with uneven side walls as well as in process tanks
with various protruding objects. Furthermore, as a result of the
narrow beam angle - the emitted ultrasonic signals have an
outstanding focusing - deep penetration through gases, vapour
and foam is ensured.
5 m r=22 cm
r=44 cm
r=66 cm
r=88 cm
10 m
15 m
20 m r
5 m r=22 cm
r=44 cm
r=66 cm
r=88 cm
10 m
15 m
20 m r
r
The Diameters
corresponding to
5° beam angle.
Principle of Operation
The ultrasonic level metering technology is based on the principle of
measuring the time required for the ultrasound pulses to make a round
trip from the sensor to the level to be measured and back. The sensor
emits an ultrasonic pulse train and receives the echoes reflected. The
intelligent electronic device processes the received signal by selecting
the echo reflected by the surface and calculates from the time of flight
the distance between the sensor and the surface which constitutes the
basis of all output signals of the Echotel
Dead Band is a feature common to all
ultrasonic level meters. It is specified as
“Minimum measuring distance” in the
Technical Data Table.
2. Identification Code
Basic Model Number:
335=Integrally mounted transmitter with 50 kHz transducer and 8 meter range
338=Integrally mounted transmitter with 80 kHz transducer and 6 meter range
Electronics Housing:
P=Plastic (PBT) housing
A= Aluminum housing
Input power:
A= 85 to 265 V AC
D= 10.5 to 40 V DC,
10.5 to 28 V DC
Signal Output:
1= 4 - 20 mA & SPDT relay
Accessories:
0= No digital display/programming module
A= Digital display/programming module included
Agency Approvals:
G=General purpose IP 67
Mounting:
5= 2" NPT
B= 2" BSP
Transducer Material:
P= Polypropylene
K= Kynar
33 --
Order Codes for Accessories:
1. 046 – 8108 - 001 : Local Indicator for Echotel 335/ 338 series
2. 013 – 6165 - 001 : Magnetic Screwdriver - Calibration tool

3
3. TECHNICAL DATA
3.1 Data of Echotel for liquids
General data
Product name Echotel 335/338 series
Product description Compact type ultrasonic level transmitter
Housing material Plastic: PBT fibre-glass reinforced, flame-retardant (DuPont)
Aluminium: Powder paint coated
Ambient temperature -30°C ... +60°C with 375 - 0SAP -100 -25°C ... +60°C If necessary, protect the device from over-heating by direct
sunshine!
Pressure (Absolute.) 0.3 ... 3 bar (0,03 ... 0,3MPa)
Seals PP transducer: EPDM
All other transducer versions: FKM (Viton)
Mechanical protection Sensor: IP68 (submersible)
Housing: IP67 (NEMA 6)
Power supply /
Consumption
High voltage version: 85 ... 255 V AC / 6 VA
Low voltage version: 10,5 ... 40 VDC / 3,6 W, 10,5 ... 28 V AC / 4 VA
Accuracy* ±(0.2% of the measured distance plus 0.05% of the range)
Resolution < 2 m: 1 mm, 2...5 m: 2 mm, 5...8 m: 5 mm
Analogue: 4/20 mA, 600 Ohm, galvanically isolated, secondary lightning protection
Contact: SPDT (NO/NC); 250 V AC, 3 A
HART (optional)
Outputs
Display (375 - 0SAP -100): 6 digits, icons and bargraph, Custom LCD
Electrical connections 2 x Pg16 and 2 x _” NPT
Wire cross section: 0,5 ... 2,5 mm2
Electrical protection Class I.
*Under optimal circumstances of reflection and stabilised transducer temperature.
Special data of Echotel for liquids with PP and PVDF transducers
Type Echotel®338 Echotel®335
Transducer material PP or PVDF PP or PVDF
Maximum measuring
distance * [m / ft]
6 / 20 8 / 26
Min. measuring distance*
(Dead band) [m / ft]
0,25 / 0,82 0,35 / 1,2
Total beam angle (-3 dB) 5° 7°
Measuring frequency 80 kHz 50 kHz
Process connection 2” thread 2” thread
* (taken from the transducer face)
375-0 375 - 0SAP -100 Programming Module
Field indication 6 digits, icons and bargraph, Custom LCD
Ambient temperature -25°C … +60°C
Housing material PBT fibre-glass reinforced plastic, flame-retardant
(DuPont)
Dimensions of Echotel 338/335
Echotel 338: PP, PVDF, PTFE Echotel 335: PP, PVDF, PTFE
~56.5
BSP length 15
NPT length 22
2x NPT1/2"
~60
2 pcs Pg16
~89
~
148
BSP or
or NPT 2"
~56.5
~
148
BSP length 15
NPT length 22
2x NPT1/2"
~
80
2 pcs Pg16
~89
or NPT 2"
BSP or

4
4. INSTALLATION
4.1 Liquid Level Measurement
POSITION
The optimal position of the Echotel is between 1/2
radius and 2/3 diameter of the (cylindrical) tank /
silo. (Take also sonic cone on page 1 into
consideration.)
PARALLELITY
The sensor face has to be parallel
to the surface of the liquid within ±
2-3°.
TEMPERATURE
Make sure that the transmitter
will be protected against
overheating by direct sunshine.
Sunshade
OBSTACLES
Make sure that no in-flow path or
objects (e.g. cooling pipes, ladders,
bracing members, thermometers, etc)
or no tank wall of the ragged surface
protrude into the sensing cone of the
ultrasonic beam.
Although up to two fix objects in the
tank / silo that disturb the
measurement can be blocked out by
the appropriate programming of the
Echotel
FOAM
Foaming of the liquid surface may render ultrasonic level
measuring impossible. If possible, a location should be found,
where foaming is the smallest (the device should be located as
far as possible from liquid in flow) or a stilling pipe or well
should be used.
FUME/VAPOUR
In case of closed tanks containing chemicals or other liquids
creating fume/gases above the liquid surface especially for
outdoor tanks exposed to the sun, a strong reduction of the
nominal measuring range of the ultrasonic device is to be
considered during device selection.
WIND
An intensive moving of the air (gas) in the vicinity of the
ultrasonic cone is to be avoided. A strong draft of wind may
"blow away"the ultrasound.
STAND-OFF PIPE
The structure of the stand off pipe should be rigid, the inner rim where the
ultrasonic beam leaves the pipe should be rounded.
L
Ø D
D min ( in mm)
L in
mm Echotel 338 Echotel 335
150 60 60
200 60 75
250 65 90
300 75 105
350 85 120

5
4.2 Open Channel Flow Measurement
•For ultimate accuracy, install the sensor as close as possible above the expected maximum water level (see minimum measuring
range).
•Install the device upstream in a place defined by the characteristics of overflow and metering channel along the longitudinal axis of
the flume or weir.
•From the point of view of measurement accuracy the length of the channel sections preceding and following the measuring flume
and their method of joining to the measuring channel section are of critical importance.
•Despite of the most careful installation, the accuracy of flow metering will be lower than that of specified for distance
measurement. It will be determined by the features of the flume or weir applied.
4.3 Electrical Connection
•Screw out the hexagonal countersunk screw at the side
of the model. Lift the tilt cover to access the screw
terminal.
•There is a basic requirement for separating the 4...20
mA signal cable and 230 V AC supply
(or output relay) cable by shielding.
•For grounding the unit, either use the grounding screw
terminal on the outside of the housing; or use a three
wire mains cable, connecting the third wire to the
internal grounding screw terminal.
•Three-wire installation is also possible for the 24 V
DC versions by connecting the terminals 1 and 6. In
this case the galvanic isolation is not provided.
•The unit may be damaged by electrostatic discharge
(EDS), via terminal, thus apply the precautions
commonly used to avoid electrostatic discharge.
5. PROGRAMMING
The Echotel will be delivered with the following Factory Default:
⇒Current output, display and bargraph: LEVEL
⇒4 mA: assigned to the minimum level 0%
⇒20 mA: assigned to the maximum level 100%
⇒Error indication by the current output: hold last value
⇒Damping: 60 sec for liquids, 300 sec for solids
The device can be programmed in two ways:
•Touch-Magnet Programming by the supplied magnetic screwdriver (with level transmitters for liquids only), see 5.1.
Assignment of the levels to the 4 and 20 mA current output, relay switch differential (both with an accuracy of ±20 mm) error
indication by the analogue signal and damping can be set.
•With the 046-8108-001 programming module, see 5.2.
All features of the device can be set, such as measurement configuration and optimization, relay programming, 32-point
linearisation, dimensions
for 6 tanks with different shape and for 21 different open channels (flume or weir) etc.
Some Devices are already equipped with the 046-8108-001 (see Identification code – page 3).
The Echotel is fully operational without the 046-8108-001. The 046-8108-001 is only needed for programming and/or displaying
measurement values.
If the transmitter is left in Programming Mode by mistake, it will automatically return to Measurement Mode after 30 minutes and will
operate with the parameters entered during the last completed programming.

6
5.1 Touch-Magnet Programming
The following can be programmed: with the supplied
magnetic calibration tool – screwdriver PN°013-6165-
001:
•Assignment of the 4 mA analogue output to a required
e.g. min. level / max. distance
•Assignment of the 20 mA analogue output to a required
e.g. max. level / min. distance
•Error indication by the current output (Hold, 3.6 mA,
22 mA) see Chapter 6.2.(P12)
•Relay switching different
•Damping (10, 30 and 60 sec)
•Reset to the factory default
Note: Current output can also be assigned in inverted
mode:
4 mA= 100% (Full), 20 mA= 0% (Empty)
Programming is only possible if the Echotel receives
valid echo i.e.“ECHO” LED is lit !
and transmitter is in LEV measuring mode (factory
default).
The accuracy of the setting with this programming method
is limited to ±20 mm. Thus the relay switching difference
between “On” and “OFF” must be greater than 20 mm.
Place magnet to at 0% level:
LED O O O
Hold magnet in place while setting:
LED O O O
Remove magnet when ready:
LED O O O
Place magnet to at 100% level:
LED O O O
Hold magnet in place while setting:
LED O O O
Remove magnet when ready:
LED O O O
LEDs
magnet
For programming: put magnetic screwdriver in accordance with the drawing to place A or B and check the LEDs for their status:
= LED is on, = LED is blinking, = LED is off, = LEDs are blinking alternatively
Make sure that after programming completed all other magnetic influences will be avoided.
Minimum level, 0%, empty tank (assignment to 4 mA,)
Place the Echotel at a distance to the target corresponding to the required maximum distance/minimum level.
Action LED indication
1) Check valid echo = Valid echo received, transmitter
programmable
2) Place magnet to the symbol “A” and = Transmitter in programming mode
3) Hold magnet in place = Distance assigned to 4 mA
4) Remove magnet when all LEDs are
off
= Programming completed
Use level in tank or a fix target e.g. the wall
Maximum level 100%, full tank (assignment to 20 mA)
Place the Echotel in a distance to the target corresponding to the required minimum distance/ maximum level.
Action LED indication
1) Check valid echo = Valid echo received, transmitter
programmable
2) Place magnet to the symbol “B” and = Transmitter in programming mode
3) Hold magnet in place = Distance assigned to 20 mA
4) Remove magnet when all LEDs are
off
= Programming completed
Use level in tank or a fix target e.g. the wall
Programming relay switch-on point (the level where relay becomes energised)
Place the Echotel at a distance to the target corresponding to the required switch-on point. (Do not forget to check valid Echo!)
Action LED indication
1) Place magnet to symbol “A”” =Programming mode
2) Place magnet to symbol “B” and =Programming in progress
3) Hold magnet to symbol “B”=Programming in Progress
4) Place magnet to symbol “A”=Programming in Progress
5) Remove magnet when all LEDs are off =End of Programming
Use level in tank or a fix target, i.e. the wall

7
Programming relay switch-off point (the level where relay becomes de-energised)
Place the Echotel at a distance to the target corresponding to the required switch-off point. (Do not forget to check valid Echo!)
Action LED indication
1) Place magnet to symbol “A” =Programming mode
2) Place magnet to symbol “B” and =Programming in progress
3) Hold magnet to symbol “B”=Programming in progress
4) Keep holding magnet to symbol “B”=Programming in progress
5) Remove magnet when all LEDs are off =End of Programming
Use level in tank or a fix target, i.e. the wall
Please note that the smallest switch-differential achievable with magnet programming is 20 mm.
“Error indication” by the current output (Check valid echo as above)
Action LED indication
1) Place magnet to the symbol “A” = Transmitter in programming mode
2) Place magnet to the symbol “B”
repeatedly
to select the required error indication mode
= Hold last value
= 3.6 mA
= 22 mA
3) Place magnet to the symbol “A” = Programming completed
“Damping” (Check valid echo as above)
Action LED indication
1) Place magnet to the symbol “B” = Transmitter in programming mode
2) Place magnet to the symbol “A”
repeatedly
to select the required damping
= 10 sec
= 30 sec
= 60 sec
3) Place magnet to the symbol “B” = Programming completed
Reset (to factory default)
Action LED indication
1) Place magnet to the symbol “B” = Programming mode
2) Place magnet to the symbol “A and = Reset in progress
3) Hold magnet to the symbol “A” = Reset in progress
4) Remove magnet when all LEDs are off = End of programming
Error indications during programming (by LEDs)
Action LED status = error indicated Correction
1) Attempted programming = blinking twice = No Echo Find valid echo
2) Attempted programming = blinking three times = access denied (access code
active)
With use of 375 - 0SAP -100 see Chapter 5.2
(P99)
3) Attempted programming = blinking four times = Echotel not in LEV meas. mode With use of 375 - 0SAP -100 see Chapter 5.2
(P01)
4) Programming of the relay =blinking alternately = switch-differential too small Set switch-differential greater than 20 mm

8
5.2 Programming of the Echotel by the 046-8108-001 Programming Module
The 046-8108-001 supports 3 separately accessible programming modes representing 3-
layers of programming complexity, depending on user choice.
PLUG-IN PROGRAMMER
Current Output
Scaling
Full
Parameter
Access
QUICKSET
Current Output Scaling (5.2.4)
Recommended as a simple and fast way to modify the scaling of the current output.
QUICKSET (5.2.5)
Recommended as a simple and fast way to set up the Echotel by 8 basic parameters
This menu driven programming mode supports the following basic settings:
•Engineering unit for the display (Metric or US)
•Maximum measuring distance
•Assignment of min level to 4mA
•Assignment of max level to 20mA
•Error indication by the current output
•Damping time
•Assignment of level to energising of the relay
•Assignment of level to de-energising of the relay
Full Parameter Access (5.2.6)
All features of the Echotel can be accessed by parameter addresses:
Example:
•Measurement configuration
•Outputs
•Measurement optimalisation
•6 pre-programmed tank shapes for volume calculation
•32-point linearisation table
•Open channel flow metering functions
5.2.1 The 046-8108-001 Programming Module
The plug in programming and display module is used for programming but also for display even in case of Touch-Magnetic
Programming
The Display and keys
Symbols used on the LCD:
•DIST – Distance (measuring) mode
•LEV – Level (measuring) mode
•VOL – Volume (measuring) mode
•FLOW – Open channel (flow metering) mode
•PROG - Programming mode (device under programming)
•RELAY – Relay
•T1 - TOT1 volume flow totaliser (resetable aggregate)
•T2 - TOT2 volume flow totaliser (aggregate)
•FAIL - Measurement / device error
•⇑⇓- Level changing direction
•Bargraph assigned to the current output or echo strength
Symbols used on the frame:
•M– Metric system
•US – US calculation system
ENTER
NEXT
UP
DOWN

9
5.2.2 Programming with the 046-8108-001 Programming Module
Programming will be performed by pressing one or two keys (simultaneously).
Single key pressing
E
Press key ENTER - to save parameter address and go to parameter value
to return from parameter value to parameter address
Press NEXT to move the blinking of the digit to the left
Press UP to increase value of the blinking digit
Press DOWN to decrease value of the blinking digit
Double key pressing
(Short overview, for details see in 5.2.4, 5.2.5 and 5.2.6)
Press the two keys simultaneously for desired programming step.
Enter into or quit programming modes Basic steps while parameter address is blinking Basic steps while parameter value is
blinking
ECurrent output scaling
Q
uickse
t
Full Parameter
Ac c e s s
E
Return to default*
* LOAD will be displayed
** CANCEL will be displayed
Cance
l
a
llmod
ifica
tions
**
Parameter
valu e
Def ault
E
Display default value
* cancellation immediately active
Cance
la
ll
mod
ifica
tions
re
turn
to
pa
rame
te
r
add
ress*
Parameter
valu e
Act u al
Notes:
If the parameter value is not accessible i.e. the parameter address keeps blinking after pressing ENTER
E
,
•the parameter is either a read-out type, or
•the secret code prevents the modification (see P99).
If the modification of the parameter value is not accepted i.e. the parameter value keeps blinking after pressing ENTER
E
,
•the modified value is either out of the range, or
•the code entered is not valid for this parameter
5.2.3 Indications of the 046-8108-001 Programming Module and the LEDs
Field indication
Depending on the measuring mode (see P01 in Chapter 5.2.3)
the following values can be displayed (relevant symbol is lit):
•Distance
•Level
•Volume
•Flow
•TOT1 and TOT2
•Error code (if “FAIL” is blinking)
To scroll through the displays above press NEXT repeatedly.
To display transducer temperature, press UP :
To display current output value, press DOWN :
LED indication
ECHO - LED
LED is lit as long as the device receives a valid echo signal
RELAY - LED
LED is lit when relay is energized
COM - LED
LED is lit during communication
(Remote control)
RELA
ECHO
COM
ENTER
NEXT
UP
DOWN
(
°C/°F
)
(
mA
)

10
5.2.4 Current Output Scaling
This programming mode is the simple and fast way to modify the scaling of the current
output.
For changing all parameters other than those assigned to 4 and 20 mA use either the QUICKSET
(5.2.2). or the Full Parameter Access (5.2.3).
Current Output Scaling mode is useful for re-scaling i.e. for modifying of the minimum and
maximum level assigned to the output signals 4 and 20 mA, if other than the factory default.
Current Output Scaling is aided by 2 screens for setting.
The instructions for this programming can also be found below the screw cover on the front panel
of the Echotel.
Note: For this programming the Echotel has to be in level measurement mode. See chapter 6.1
(P01)
.
Keys Function
ENTER
E
+ UP (press for 3
seconds)
Enter or exit Current Output Scaling programming mode
UP / DOWN Increase/decrease blinking digit or scroll up/down
NEXT Move left with the blinking digit
UP + DOWN "GET LEVEL" - display actual level value measured by the Echotel
ENTER
E
Save actual value on the screen and move to the next screen
NEXT + UP Quit Current Output Scaling without saving the modifications
NEXT + DOWN Display Factory Default of the relevant screen
Screens Actions
4 represents the output signal
x = level value to be assigned
4 mA xxxx:– level value assigned to 4 mA current output
Manual: set required value (by UP / DOWN / NEXT keys) and save it (by the key ENTER
E
)
Automatic: use the “GET LEVEL” function (UP + DOWN ) to obtain actual measured value
with level in
tank or a fix target, e.g. wall. (“GET LEVEL” functions only if ECHO LED is lit) and save
it as above.
DEFAULT: 0 m (0%, Empty tank)
20 represents the output signal
x = level value to be assigned
20 mA xxxx:– Level value assigned to 20 mA current output
Manual: set required value (by UP / DOWN / NEXT keys) and save it (by the key ENTER
E
)
Automatic: use the “GET LEVEL” function (UP + DOWN ) to obtain actual measured value
with level in tank or a fix target, e.g. wall. (“GET LEVEL” functions only if ECHO LED is lit) and
save it as above.
DEFAULT: max. level = max. measuring distance - dead band (100%, Full tank) See chapter 5.1
(P04, P05)
4:xxxx
20:xxxx

11
5.2.5 QUICKSET
Recommended as a simple and fast way to start up Echotel.
QUICKSET programming is aided by 8 screens to set the 8 basic
parameters of the device if the required application is uncomplicated level
metering, recommended for liquids only.
The instructions of this programming mode are also to be found, below
the screw cover, on the front panel of the Echotel.
The DEFAULT of the Current output, Display and Bargraph
is LEVEL.
This can be modified only in the Full Parameter Access mode see 5.1
(P01).
Keys Function
ENTER
E
+ DOWN
(press for 3 seconds) Enter or exit QUICKSET programming mode
UP / DOWN Increase/decrease blinking digit or scroll up/down
NEXT Move left with the blinking digit
UP + DOWN "GET LEVEL" - display actual level measured by Echotel
ENTER ESave value on the screen and move to the next screen
NEXT + UP Quit QUICKSET programming mode without saving the modifications
NEXT + DOWN Display Factory Default of the relevant screen
See next page for details.
Screens Actions
APplication
xx= select “EU” (European) for metric or “US” for US engineering units (Use UP / DOWN keys)
yy= indicating “Li” for liquids or “So” for solids level measurement (can not be changed).
DEFAULT: EU
H = xxxx maximum measuring distance – Distance between transducer face and tank/silo bottom
Manual: set value (Use UP / DOWN / NEXT keys) and save it (by ENTER E)
Automatic: use the “GET LEVEL” function (UP + DOWN ) to obtain actual measured value with level in tank or a fix
target, i.e. wall. (“GET LEVEL” functions only if ECHO LED is lit) and save it as above.
DEFAULT: maximum measuring distance [m], see Technical Data Table
4 mA xxxx – level value assigned to 4 mA current output
Manual: set level value (by UP / DOWN / NEXT keys) and save it (by ENTER E)
Automatic: use the “GET LEVEL” function (UP + DOWN ) to display the actual measured value with level in tank or a fix
target, i.e. wall. (“GET LEVEL” functions only if ECHO LED is lit) and save it as above.
DEFAULT: 0 m (0%, Empty tank)
20 mA xxxx – level value assigned to 20 mA current output
Manual: set level value (Use UP / DOWN / NEXT keys) and save it (by ENTER E)
Automatic: use the “GET LEVEL” function (UP + DOWN ) to obtain actual measured value with level in tank or a fix
target, i.e. wall. (“GET LEVEL” functions only if ECHO LED is lit) and save it as above.
DEFAULT: max. level = max. measuring distance – dead band [m] (100%, Full tank) (See Technical Data Table)
Error indication by the current output – select “Hold”, “3.6” mA or “22” mA (by UP / DOWN key) and save it as above.
DEFAULT: hold last value
damping time:select required damping time (by UP / DOWN key) and save it as above.
DEFAULT: 60 sec for liquids, 300 sec for solids
relay Energised xxxx: level of the relay energised state
If the value exceeds this programmed value the relay will be energised
relay de-energised xxxx: level of the relay de-energised state
If the value sinks below this programmed value the relay will be deenergised
Note: Current output can also be programmed for inverted operation: 4 mA= 100% (Full), 20 mA= 0% (Empty)
H:xxxx
Er:xxxx
AP:xx
yy
4:xxxx
20:xxxx
dt: xxxx
rE:xxxx
rd : xxxx

12
5.2.6 Full Parameter Access
To access all features provided by the Echotel.
Description of all parameters can be found under the chapter “Parameter” (Chapter 6.).
Keys Function
ENTER
E
+ NEXT
(press for 3 seconds)
Enter or exit Full Parameter Access programming mode.
In this programming mode, the display will indicate:
yy is the Parameter Address
xxxx is the Parameter Value
Note: Measuring is going on during programming in accordance with the old parameter set. New parameter set will be valid
after returning to measurement from programming mode.
Steps and indications of the Full Parameter Access programming mode
pressing Keys while Parameter Address is blinking while Parameter Value is blinking
ENTER
E
Go to the Parameter Value Save the modification of the Parameter Value and return to the
Parameter Address
NEXT + UP Cancel all modifications of the actual
programming phase. Pressing for 3 secs is
required while CANCEL will be displayed
for warning
Neglect the modification of the Parameter Value.
and return to the Parameter Address without saving the
modifications
NEXT + DOWN Reset entire device to Factory Default.
Since this action will reset all parameters,
“LOAD” will appear on the display:
- to confirm, press ENTER
- to escape, press any other key
- Exception: clearing TOT 1 (See at P77)
Display default of the Parameter Values
(it can be saved by pressing ENTER
E
)
NEXT Move blinking of the digit to the left
UP / DOWN Modify the blinking digit (increase, decrease) or scroll up/down
6. PARAMETERS – DESCRIPTIONS AND PROGRAMMING
6.1 Measurement Configuration
P00: - cba Application/Engineering Units
Programming of this parameter will result in loading the factory default with the
corresponding engineering units.
aOperating (measurement) mode Display indication
0Liquid level measurement “Li”
1Free flowing solids level measurement “So”
bEngineering units (according to “c”)
Metric ft
0m inch
1cm inch
Attention: mind the sequence!
Coming to this parameter the right
value “a” will be blinking first.
cCalculation system
0Metric
1US
FACTORY DEFAULT: 000
yy
:xxxx

13
P01: - ba Measurement Mode
Display, current output and the switching points of the relays will be interpreted in the engineering units of the (measured
or calculated) process value corresponding to the programmed measurement mode. On the other hand the higher the “a” of
the programmed parameter value the more (measured or calculated) process values can be displayed on the screen. (e.g. if
P01=b0 only the Distance, if P01=b5 the Distance the Level, the Volume and the Flow can be displayed. Exception if
P01=b2 or b4.)
aMeasurement Mode Display symbol
0Distance DIST
1Level LEV
2Level in percentage LEV%
3Volume VOL
4Volume in percentage VOL%
5Flow FLOW
Attention: mind the sequence!
Coming to this parameter the right
value “a” will be blinking first.
bBargraph indication
0Echo strength
1Current output
FACTORY DEFAULT: 11
P02: - cba Calculation units
a Temperature
0°C
1°F
Attention: mind the sequence!
Coming to this parameter the right
value “a” will be blinking first.
This table is interpreted according to P00(c), P01(a) and P02(c) and is irrelevant in case of percentage measurement (
P01(a)= 2 or 4)
b Volume Weight (set also P32) Volume flow
Metric US Metric US Metric US
0m3ft3- lb (pound) m3/time ft3/time
1liter gallons tons tons liter/time gallons/time
c Time
0Sec
1Min
2Hour
3Day FACTORY DEFAULT: 000
P03: - - - a Values Displayed-Rounding
It is important to keep in mind that the instrument is measuring distance as basic quantity.
Measured distance Resolution
Xmin – 2m 1mm
2m – 5m 2mm
5m – 10m 5mm
over 10m 10mm
The resolution depending on the distance can be
considered as a kind of rounding that will be contained in
all further value (of level, volume or volume flow)
calculated. Therefore if programmed for DIST or LEV
measurement the setting of P03 is irrelevant.
Displayed VOL or FLOW
Displayed value Displayed form
0.000 – 9.999 x.xxx
10.000 – 99.999 xx.xx
100.000 – 999.999 xxxx.
1000.000 – 9999.999 xxxxx.
100000.000 –
99999.999
xxxxxx.
1 million – 9.99999*109x.xxxx : e
(exponential form)
over 1*1010 (overflow) Err4
Obviously the decimal position will be shifted with
increasing value displayed. (See table at the left).
Values over one million will be displayed in exponential
format whereas the value (e) represents the exponent.
Over the value of 1x1010 Err4 (overflow) will be
displayed.
Rounding
Parameter value
“a”
Steps in the displayed
value
01 no rounding
12
25
310
420
550
A couple of millimetres of fluctuation of the basic DIST value (e.g. due to
waves) will be enlarged by the mathematical operations. This enlarged
fluctuation in displaying VOL or FLOW can (if disturbing) be avoided by
rounding to be set in P03. Rounding value 2, 5, 10 etc represents the steps
by which the calculated value will be changed in its (one or two) last
digit(s).
Examples:
P03=1 steps by 2: 1,000; 1,002; 1,004
P03=5 steps by 50: 1,000; 1,050; 1,100 or 10,00; 10,05(0); 10,10(0);
10,15(0)
(the 0 from the steps 50, 100, 150 etc will not be displayed)
FACTORY DEFAULT: 0

14
Programmed
measurement
range of the
application
Min.
me as
di st anc e
(dead
band
)
DEFAULT
value
of P05
Max
me asur i ng
di st of
the
ap pl i c ati on
pr o g
rammed
value
of P04
Max.
me asur e me nt
ran
ge
of the
devi ce
Max.
me asur i ng
di st ance
of the
devi ce
DEFAULT
value
of P04
P06
Far end blocking
DIST=distance (measured)
Close end blocking (programmed value
of P05 DEFAULT value of P05))
LEV=level (calculed; P04-DIST)
VOL=volume (calculated from DIST LEV)
Basic conception and elements of the ultrasonic measurement
P04: Maximum measuring distance
The maximum measuring distance is the only one parameter that has to be programmed for each application other than
distance measurement mode. The DEFAULT value of P04 (see table below) can also be displayed by double key pressing
NEXT + DOWN .
Echotel Maximum measuring
distance
Level transmitters
for liquids
PP or PVDF
(m/ft)
Echotel 338 6 / 20
Echoptel 335 8 / 26
Keep in mind that
LEVEL (as the result of the measurement) = P04 (programmed) – DISTANCE (measured by the device)
Since the accuracy of level (and all further calculated) value depends on the accuracy of the max measuring distance of the
application which is the distance between the sensor face and the tank / silo bottom.
To obtain the best accuracy for a liquid level measurement, measure this distance in the empty tank with the Echotel by
using
the “GET LEVEL” function (press UP and DOWN keys simultaneously) provided the bottom is flat. Enter the actual
measured value displayed as P04.
Values of the maximum measuring distance will be in accordance with the table below.
Engineering unit Display format
m x.xxx or xx.xx
cm xxx.x
ft xx.xx or xxx.x
inch xxx.x

15
P05: Minimum measuring distance (Close-end blocking)
The Echotel will not accept any echo within the blocking distance set here.
Automatic Close-end-blocking (Automatic Dead Band control)
By using the factory default value, the unit will automatically set the smallest possible close-end-blocking distance i.e. the
dead band.
Manual close-end-blocking
Manual close-end-blocking would be used for example to block out the echo originating from the bottom rim of a stand-off
pipe or from any object protruding into the ultrasonic cone near to the transmitter.
By entering a value, higher than the factory default, the minimum measuring range will be extended and fixed to the
specified value.
To display factory default of the minimum measuring distance press NEXT + DOWN .
Echotel Factory default of the minimum measuring distance (dead band)
Level transmitters
for liquids
with PP or PVDF transducers
(m/ft)
Echotel 338 0,25 / 0,82
Echotel 335 0,35 / 1,2
FACTORY DEFAULT: automatic dead band control
P06: Far-end blocking
A). Level measurement
Far end blocking is used to neglect incorrect
level/volume readings and output actions below a
pre-set level. In the far-end of the measuring
range, for example tanks with heaters or other
interfering objects (sludge, cone of silo etc.) may
cause faulty readings.
If the level of the medium sinks below the
blocked out range:
- ”Sub 0” will be indicated for the level and
volume
- Distance value is not interpretable
- Current output will hold value corresponding to
the far end blocking level
4
mA
mA
20
mA
P06
Far end blocking
Level
Volume
"SUB 0" indication
below this level
If the medium level is above the blocked out range:
The calculation of level and volume will be based on the programmed tank dimensions, therefore the measured or calculated
process values will not be influenced in any way, by the far end blocking value.
B). Open channel flow metering
Far end blocking will be used to neglect incorrect volume flow readings and output actions below a pre-set level, where
accurate volume flow calculation is not possible any more.
If the liquid level in the flume/weir falls below the blocked out range:
The Echotel will act as follows:
- Indicate ”No Flow” on the Display
- Hold last valid data on the current output.
If the level in the flume/weir is above the blocked out range:
The calculation of volume flow will be based on the programmed flume/weir data, therefore the measurement values will
not be influenced in any way, by the far end blocking value.
FACTORY DEFAULT: 0

16
6.2 Current Output
P10: Value (of distance, level, volume or flow) assigned to 4 mA current output
P11: Value (of distance, level, volume or flow) assigned to 20 mA current output
Values are interpreted according to P01(a). Please note that in case of programming for (LEV or VOL) % measurement the
min and max value has to be entered in the relevant engineering units of LEV (m, ft) or VOL (m3, ft3).
Assignment can be made so that the proportion between the change of the (measured or calculated) process value and the
change of the current output be either direct or inverse. E.g. lev 1m assigned to 4mA and lev 10m assigned to 20mA
represents direct proportion and lev 1m assigned to 20mA and lev 10 m assigned to 4mA represents the inverse proportion.
FACTORY DEFAULT:
P10 0 level (max distance)
P11 max level (min distance)
P12: - - - a Error indication by the current output
In case of error the Echotel will provide one of the current outputs below. (For errors and their indications see Chapter 7).
aError indication (according to NAMUR)
0Hold last value
13.6 mA
222 mA
FACTORY DEFAULT: 0
6.3 Relay Output
P13: - - - a Relay function
aRelay function Also set:
0DIFFERENTIAL LEVEL CONTROL
(Hysteresis control)
Relay is energised if the measured or
calculated value exceeds the value set in
P14
Relay is de-energised if the measured or
calculated value descends under the value
set in P15
Relay
Level
P14
P15
Time
Energised:
De-energised:
P14, P15
There is a need
to set (in level
min 20mm)
hysteresis
between P14 and
P15
1Relay is energised in case of Echo Loss -
2Relay is de-energised in case of Echo Loss -
3COUNTER
Used for open channel flow metering.
A 140 msec pulse is generated every 1, 10,
100, 1.000 or 10.000 m3according to P16.
P16= 0: 1m3
P16= 1: 10 m3
P16= 2: 100 m3
P16= 3: 1.000 m3
P16= 4: 10.000
m3
FACTORY DEFAULT: 2
P14: … Relay parameter – Setpoint value FACTORY DEFAULT: 0
P15: … Relay parameter – Setpoint value FACTORY DEFAULT: 0
P16: … Relay parameter – Pulse rate FACTORY DEFAULT: 0

17
6.4 Measurement Optimisation
P20: - - - a Damping
Use this parameter to reduce unwanted fluctuation of the display and output.
Echotel 335 / 338a Damping
time
(seconds)
None/moderate
fume or waves
Heavy/dense fume or
turbulent waves
0no filter Recommended for testing only
13 applicable not recommended
26 recommended applicable
310 recommended recommended
430 recommended recommended
560 recommended recommended
6100 applicable applicable
7300 applicable applicable
8600 not applicable not applicable
91000 not applicable not applicable
FACTORY DEFAULT: for Liquids: 60 sec
P22: - - - a Dome top tank compensation
To reduce disturbing effect of possible multiple echos.
aCompensation Applied
0OFF In case the Echotel is mounted not in the
centre of the top and the top is flat.
1ON In case the Echotel is mounted in the
centre of a tank with dome-shaped top
FACTORY DEFAULT: 0
P23: - - - a Angle of repose (repose formation) only for free flowing solids applications
This parameter provides information for the QUEST+ software for optimising the echo-search pattern.
aEstimated angle of repose
0No angle of repose (default)
1Below 15°(α)
2Over 15°(α)
The optimal setting of this parameter can be done with the help of checking the echo
strength in the read out parameter P72 indicating the echo amplitude in dB.
The ideal setting of P23 is at which the parameter value in P72 becomes the best (nearest
“0”).
1). Set P23 for a= 1, confirm it with [E] and switch to Measurement Mode then
return
to Programming Mode.
2). Observe the change of echo amplitude in P72 and record an average value.
3). Perform the above with the P23 = 2 setting.
4). Finally set P23 with the value of (a) at which the amplitude value in P72 is nearest to
0.
FACTORY DEFAULT: 0
P24: - - - a Target tracking speed
a Tracking speed Remark
0Standard For most applications
1Fast For fast changing level
2Special Only for special applications
(measuring range is reduced to 50% of the nominal value)
The measuring window is inactive and the Echotel will respond
practically instantly to any target. Recommended to fast target
tracking, but usually not applicable for level metering.
FACTORY DEFAULT: 0

18
P25: - - - a Selection of Echo within the measuring window
A so-called measuring window is formed around the echo signal. The position of this measuring window determines the
flight time for calculation of the distance of the target. (the picture below can be seen on the test oscilloscope)
Received
signal
amplitude
Echo 1.
t
"t" ultrasound flight time
Echo 2.
Some applications involve multiple (target + disturbing) echoes even within the measuring window. Basic echo selection
will be done by the Quest + software automatically. This parameter only influences the echo selection within the measuring
window.
aEcho in the window to
be selected
Remark
0With the highest
amplitude
For most applications (both with liquids and solids)
1First one For liquids applications with multiple
echoes within the Measuring Window
2Largest one Contact factory
FACTORY DEFAULT: 0
P26: (m/h) Level elevation rate (filling speed) Very heavy fuming
P27: (m/h) Level descent rate (emptying speed) Very heavy fuming
Use these parameters to provide additional protection against echo loss in applications involving dust during the filling
process in case of very heavy fuming.
These parameters must not be smaller than the fastest possible filling/emptying rate of the actual technology.
For all other applications, use the factory default setting.
FACTORY DEFAULT: for Liquids (P00: Li) P27=2000
P28 - - - a Echo-loss handling
a Echo-loss error
indication
Remark
0Delayed During echo-loss, display and analogue output will hold last value.
If the echo-loss prevails for 10 sec plus the time period set in P20 (damping time), the
reading on the display will change to "no Echo"and the outputs will change according to
the "Error Indication Mode"preset in P12.
1None For the time of echo-loss, display and analogue output will hold last value.
2Advance to full During echo-loss in case of filling, the reading on the display and analogue output will
shift towards the "full"tank/silo state with a level elevation rate (filling speed) preset in
P26
3Immediate In case of echo-loss, the display will immediately change to “no Echo” and the outputs
will change according to the "Error Indication Mode"preset in P12.
4No echo-loss indication
in case of empty
tank/silo
Echo-loss may occur in completely empty tanks with a spherical bottom due to deflection
of the ultrasonic beam, or in case of silos with an open outlet.
If the echo is lost when the tank/silo is completely empty, the indication will correspond
to empty tank, in all other cases echo-loss indication will function according to the
“Delayed”.
FACTORY DEFAULT: 0
P29 Blocking out of object #1
P30 Blocking out of object #2
Up to two fix objects in the tank/silo that disturb the measurement can be blocked out.
Enter the distance of the object from the transducer. Use the Echo Map (P70) to read out the precise distance of disturbing
objects.
FACTORY DEFAULT: 0

19
P31: Sound velocity at 20
_
C (m/sec or ft/sec depending on P00(c) )
Use this parameter if the sound velocity in the gases above the measured surface differs largely from that of in air.
Recommended for applications where the gas is more or less homogeneous. If it is not, the accuracy of the measurement
can be improved using the 32-point linearisation (P48, P49).
For sound velocities in various gases see section “Sound Velocities”.
FACTORY DEFAULT: Metric (P00: “EU”): 343.8 m/s, US (P00: “US”): 1128 ft/s
P32: Specific gravity
If you enter value (other than “0”) of specific gravity in this parameter, the weight will be displayed instead of VOL.
FACTORY DEFAULT: 0[kg/dm3] or [lb/ft3] depending on P00(c)
P33: (m) Manual echo selection by moving the Measuring Window
A so-called measuring window is formed around the echo signal (See scheme on
the next page.) The distance of the target will be calculated from the flight time in
accordance with the position of the measuring window.
Use this parameter if the Echotel unambiguously selects a wrong echo; for
example the echo reflected from the surface is much weaker than the interfering
one(s) (see figure beside and on next page).
Enter the distance of the correct echo and the software will move the measuring
window and calibrate itself to the echo found there.
To determine the distance of the correct echo, either use the Echo Map (to load-in
a value from the Echo Map, see parameter P70), or measure the distance with an
appropriate device, and enter this value in P33.
1. 2.
If this parameter has been used (P33 is not 0), its value will be continuously updated with the valid echo position.
This means, that in case of a power loss, the Echotel will restart the signal processing with the measuring window
at the last updated position. To switch-off this function, set P33= 0.
FACTORY DEFAULT: 0
(locked on the disturbing echo)
Received
signal amplitude
Window
signal (comp.)
Window
signal (comp.)
Window
signal (comp.)
Displayed DIST
value (of the disturbing echo)
(flight time)
Displayed DIST
The value is correct.
Setting: P33=4.00 (results in shifting the measuring window to 4m)
Measuring Window finds the echo from the surface
5.2
3.85