SGM LEKTRA METER Guide

METER
ultrasonic level transmitter
technical documentation EN Rev. P

Page 2 of 40
METER - contents
CONTENTS
1-WARRANTY
2-PRODUCT
3-PERFORMANCE SPECIFICATIONS
4-DIMENSIONS
5-INSTALLATION
6-ELECTRICAL CONNECTIONS
7-LOCAL OPERATOR INTERFACE (LOI)-VL601
8-QUICK SETUP
9-ADVANCED SETUP
10-FACTORY TEST AND QUALITY CERTIFICATE
pag. 3
pag. 4
pag. 5
pag. 6
pag. 7
pag. 11
pag. 13
pag. 15
pag. 23
pag. 40

Page 3 of 40
METER - warranty
Products supplied by SGM LEKTRA are guaranteed for a period of 12 (twelve) months from delivery date accord-
ing to the conditions specified in our sale conditions document.
SGM LEKTRA can choose to repair or replace the Product.
If the Product is repaired it will maintain the original term of guarantee, whereas if the Product is replaced it will
have 12 (twelve) months of guarantee.
The warranty will be null if the Client modifies, repair or uses the Products for other purposes than the normal
conditions foreseen by instructions or Contract.
In no circumstances shall SGM LEKTRA be liable for direct, indirect or consequential or other loss or damage
whether caused by negligence on the part of the company or its employees or otherwise howsoever arising out
of defective goods
1-WARRANTY

Page 4 of 40
METER - features
2- PRODUCT
1. Anticondensation fi lter
2. M20 skintop
3. VL601 (opt.)
4. Sensor
2.1 IDENTIFICATION
Each meter has an adhesive identifi cation plate on which are the meter main data. The following picture describes the
information and data on the identifi cation plate.
METER1F4D
24Vdc 20÷30Vdc
MU0081604506
2
3
1Mod.
P. S .
S.N.
1
2
3
4
1. Product code 3. Serial number2. Power supply

Page 5 of 40
3-FEATURES
METER - features
Housing/sensor material
PC or Al / PP wetted part (only PVDF for ATEX certifi ed vers.)
Mechanical installation
2” GAS M (PP fl ange DN80 opt.)
Protection degree
IP67/IP68 (Sensor)
Electrical connection
Internal push connectors
Working temperature
-30 ÷ +70°C; +80°C non-continuous
Pressure
from 0,5 to 1,5 bar (absolute)
Power supply
12Vdc / 20÷30Vdc (2-wires versions) - 24Vdc (4-wires versions)
Power consumption
0,6W (2-wires) - 1,5W (4-wires)
Analog output
4...20mA, max 750ohm (4-wires versions)
Relays output
(4-wire only) n°2 3A 230Vac (n.o.)
Digital communication
MODBUS RTU for 4-wire vers. ; (opt.) HART for 2-wire vers.
Max measure range
max 0.25 ÷ 6m
max 0.40 ÷10m
In case of non perfectly refl ecting surfaces, the maximum distance value will be reduced
Blind distance
0,25m (6m versions) / 0,40m (10m versions)
Temperature compensation
digital from -30 to 80°C
Accuracy
±0,2% (of the measured distance) not better than ±3mm.
Resolution
1mm.
Calibration
4 buttons or via HART / MODBUS RTU
Warm-up
5 minutes typical
LCD Display
Plug-in display/keyboard 4 buttons matrix LCD
Ex-proof
ATEX II 1/2G Ex ia II C T6 Tamb -20 ÷ +60°C

Page 6 of 40
4-DIMENSIONS
METER - dimensions
4.1 MECHANICAL DIMENSIONS

Page 7 of 40
METER - installation
5-INSTALLATION
5.1 MOUNTING PRECAUTIONS
5.1.1 Mounting position
- With cambered roof, Do not install the sensor in the tank center (b). Leave a 300mm (d) minimum distance
between the sensor and the tank smooth wall.
- Use a protective cover to protect the sensor from weather and direct sunlight (c).
- Do not install the sensor near the load zone (a).
- Make sure that in the sensor emission beam (lobe “α”) there are no obstacles (f,s) that can be
intercepted as level.
- Make sure that there is not foam presence on the product surface to be measured.
5.1.2 Blind distance
During installation is important to remember that in the sensor vicinity there is a blind zone (or BLIND DISTANCE)
of 0.25m (for 6m max METER range) or 0.4m (for 10m max METER range) where the sensor can not measure.
Lobo
“α“
METER
6mt 5°
METER
10mt 5°
Blind Distance
0.25mt (6mt)
0.40mt (10mt)

Page 8 of 40
METER - installation
5.1.3 Installation in nozzle
Installing the METER sensor in a nozzle, make sure the sensor bottom protrudes at least 10 mm from the bottom
nozzle.
≥10mm.
METER can be installed in an extension pipe to turn away the sensor from the maximum level point. The exten-
sion pipe must be fl at and without joints (welds, etc..), also, the pipe terminal part must be cut at 45° and with the
borders without burr.
METER 6mt METER 10mt
D (mm) L max (mm) D (mm) L max (mm)
57 180 80 240
80 240 100 300
100 300
D
L

Page 9 of 40
METER - installation
5.1.4 Reference pipe installation
Disturbing factors that may infl uence the level measurement in liquids, as for example:
- foam presence on the product surface
- internal structures presence in the tank
- presence on the liquid surface of fl oating bodies
can be avoided with the use of level measurement inside of pipes (by-pass pipe or calm pipe with 57mm min.
diameter). The pipe must have a length greater or equal than the empty distance, also, must have some of vent
holes to allow the pipe regular fi lling and emptying.
In the programming menu, to the “PRODUCT” parameter, must select the “LIQUID PIPE” option
Foam Internal structures Floating bodies
Vent hole Ø5÷10mm

Page 10 of 40
METER - installation
5.1.5 Agitators presence
The level measurement is possible thanks to the Auto-Tuned statistical fi lter.
Should rarely need to adjust the fi lter setting by editing 2 METER sensor programming parameters:
- FILTER; this parameter is present in the Quick Setup menu and in the Advanced Confi guration “SETUP” menu;
increasing the parameter value, decreases the sensor sensitivity to the level measurement sudden variations.
- F-WINDOW; this parameter is present in the Advanced Confi guration “SERVICE” menu; decreasing the parameter
programmed value, increases the sensor immunity to false echoes.

Page 11 of 40
METER - electrical connections
No
c
No
c - + A B
RL1 RL2
4÷20mA MUDBUS
ALIM. 24Vdc
4÷20mA (24Vdc)
HART (opz.)
2 - WIRE VERSION 4 - WIRE VERSION
6-ELECTRICAL CONNECTIONS
6.1 WIRING
1) Separate the engine control cables or power cables from the METER connection cables
2) Open the cap by unscrewing.
3) Lead the cables into the transmitter through the glands
4) Do not use sleeves terminals, because they might interfere with the VL601 module insertion
5) Close the cap and tighten the cable glands
6.2 HUMIDITY INFILTRATIONS
To avoid the humidity infi ltration inside the housing is recommended:
- for electrical connections, use a cable with a 6÷12mm outer diameter and fully tighten the M20 cable gland
- fully tighten the cap
- position the cable so that it forms a downward curve at the M20 output; in this way the condensation and/or rain
water will tend to drip from the curve bottom

Page 12 of 40
METER - electrical connections
6.3 DIGITAL COMMUNICATIONS CONNECTION
6.3.1 - 4-wires METER; MODBUS RTU PC connection
1) METER4____ or METER8____ with MODBUS RTU communication protocol
2) USB/RS485 interface module, cod.694A004A
3) MODBUS RTU communication S/W, cod.010F105A, for METER transmitter
With this software is possible:
- connect, by selecting the UID address, the METER transmitters in MODBUS RTU network
- read on your PC monitor all measures in reading and METER operation data
- programming all METER confi guration parameters
- storing on fi les, data logger function; METER measures in reading and operating states
1
2
3
USB/RS485
6.3.2 - 2-wires METER; HART Hand Held connection or HART PC/MODEM
1) METER-__, METER0__, METER2__, METER7__, with HART communication protocol
2) 250ohm resistance
3) HART MODEM
4) HART communication S/W, cod.010E105A (for PC HART MODEM only)
5) HART HAND-HELD
1
2
3
5
4

Page 13 of 40
METER - local operator interface (LOI) - VL601
7-LOCAL OPERATOR INTERFACE (LOI) - VL601
LOI is an operator communications center for the METER. Through the LOI, the operator can access any
transmitter function for changing confi guration parameter settings or other functions.
7.1 VL601 FEATURES
The VL601 program module has 4 buttons which allow to perform all operational, control and programming
instrument functions.
In the confi guration menus, is possible:
1. Submenus and parameters access; press to select and press to access.
2. Parameter options choice: Press to select the option and press to store the option.
Press to exit without storing.
3. Confi gure the parameter values; in some parameters the confi guration is done by setting a value (eg., in the
SET DISTANCE 4mA parameter is possible to change the the corresponding distance value, in mm):
press to select the digit to be modifi ed (the digit is highlighted in inverse ), press to change the high
lighted digits number, press to save the set value and exit automatically.
Press to exit without storing.
LEFT ARROW button:
• Exit configuration
• Back to previous menu
• Echo map (from RUN mode)
UP ARROW button:
• Parameter values modification
• Parameter scroll
SCROLL button:
• Cursor movement (to the right)
• Parameter scroll
ENTER button:
• Configuration access
• Options confirmation
• Parameters values confirmation
Displayed at the bottom indicates the correct echo signal reception
!Displayed at the top alerts that there is a generic error; press SCROLL to show the message that
indicates the present error type.
The METER returns automatically to RUN mode.

Page 14 of 40
METER - local operator interface (LOI) - VL601
The VL601 programming module can be mounted and removed from the METER without affecting the unit operation.
Unscrewing the cap, the VL601 module can be mounted (by clockwise rotation until it clicks) or dismounted (by rotation
counterclockwise) as shown in fi gure.
LOCK UNLOCK

Page 15 of 40
Quick Setup Set Distance 4mA
Set Distance 20mA
Medium
Filter Coecient
Blind Distance
Display
RL1 Threshold
RL2 Threshold
Set Distance 4mA
0000 mm
Set Distance 20mA
0000 mm
Medium
>Liquids
Solids
Liquids Pipe
Filter Coecient
000
Blind Distance
0000 mm
RL1 Threshold
0000 mm
RL1 Threshold
0000 mm
Distance mm
Level mm
Level %
Output mA
Temperature °C
Parameter Default Values
6000mm (6mt max range)
10000mm (10mt max range)
Liquids
20
250mm (6mt max range)
400mm (10mt max range)
Distance mm
0mm (Disabled RL1)
0mm (Disabled RL2)
300mm (6mt max range)
500mm (10mt max range)
METER - quick setup
8-QUICK SETUP
8.2 - QUICK SETUP MODE
From “RUN” mode press ENTER to access the Quick Setup menu.
Select the parameters by moving the cursor with SCROLL, and confi rm with
ENTER; press LEFT ARROW to exit.
SET DISTANCE 4mA
SET DISTANCE 20mA
MEDIUM
FILTER COEFFICENT
BLIND DISTANCE
DISPLAY
RL1 THRESHOLD
RL2 THRESHOLD
►
4321
D
mm
8.1 - Quick Setup menu structure

Page 16 of 40
METER - quick setup
8.2.1 SET DISTANCE 4mA
Press ENTER to display the distance value associated with 4mA output.
Use SCROLL and UP ARROW to modify that value; in the example the 4mA
distance is 3500mm.
Press ENTER to confi rm.
SET DISTANCE 4mA
SET DISTANCE 20mA
MEDIUM
FILTER COEFFICENT
BLIND DISTANCE
DISPLAY
RL1 THRESHOLD
RL2 THRESHOLD
►
3500 mm
SET DISTANCE 4mA
8.2.2 SET DISTANCE 20mA
Press ENTER to display the distance value associated with 20mA output.
Use SCROLL and UP ARROW to modify that value; in the example the 20mA
distance is 500mm.
Press ENTER to confi rm.
SET DISTANCE 4mA
SET DISTANCE 20mA
MEDIUM
FILTER COEFFICENT
BLIND DISTANCE
DISPLAY
RL1 THRESHOLD
RL2 THRESHOLD
►
0500 mm
SET DISTANCE 20mA
100%
0%
20mA distance
4mA distance
Level measurement
METER
Reference point

Page 17 of 40
METER - quick setup
8.2.3 MEDIUM
Press ENTER to display the previous setting
Press SCROLL to select the medium type.
Press ENTER to confi rm.
SET DISTANCE 4mA
SET DISTANCE 20mA
MEDIUM
FILTER COEFFICENT
BLIND DISTANCE
DISPLAY
RL1 THRESHOLD
RL2 THRESHOLD
►
LIQUIDS
SOLIDS
LIQUIDS PIPE
►
MEDIUM
LIQUIDS SOLIDS LIQUIDS PIPE

Page 18 of 40
8.2.4 FILTER COEFFICIENT
Press ENTER.
Use SCROLL and UP ARROW to modify the value. Input a value from 1 to
99.
1 maximum speed, 99 maximum slowness.
The function is deactivated with 0 (immediate response).
Press ENTER to confi rm
SET DISTANCE 4mA
SET DISTANCE 20mA
MEDIUM
FILTER COEFFICENT
BLIND DISTANCE
DISPLAY
RL1 THRESHOLD
RL2 THRESHOLD
►
20
FILTER COEFFICENT
Fast resp. 5÷10 Normal resp. 20 Slow resp. 40÷100
METER - quick setup

Page 19 of 40
BLIND ZONE
BLIND
DISTANCE
METER
reference point
8.2.5 BLIND DISTANCE
Press ENTER.
he BLIND ZONE is used to avoid undesired measures near to the transmitter.
Use SCROLL and UP ARROW to modify the value. Press ENTER to confi rm.
The minimum value is 250mm (6m max vers.) or 400mm (10m max vers.).
SET DISTANCE 4mA
SET DISTANCE 20mA
MEDIUM
FILTER COEFFICENT
BLIND DISTANCE
DISPLAY
RL1 THRESHOLD
RL2 THRESHOLD
►
0250 mm
BLIND DISTANCE
8.2.6 DISPLAY
Press ENTER to access the settings change.
With the SCROLL button is possible to select the data to display
Press ENTER to confi rm.
SET DISTANCE 4mA
SET DISTANCE 20mA
MEDIUM
FILTER COEFFICENT
BLIND DISTANCE
DISPLAY
RL1 THRESHOLD
RL2 THRESHOLD
►
DISTANCE mm
LEVEL mm
LEVEL %
OUTPUT mA
TEMP. °C
►
METER - quick setup

Page 20 of 40
Level
SET
RL1 “ON”
RL1 “OFF”
RL1 RL1 RL1 RL1
RL1 RL1 RL1 RL1
Max.
Alarm
Max.
Alarm
Max level
allarm zone
700mm.
METER
reference point
RL1 THRESHOLD
RL1, MAX LEVEL ALARM
HYSTERESIS
8.2.7 RL1 THRESHOLD
Press ENTER to display the previous setting. Set the distance from the sen-
sor
Use SCROLL and UP ARROW to modify the value; in the example the RL1
max. level threshold distance is 700mm.
Press ENTER to confi rm.
NB - RL1 inactive with 0000mm
SET DISTANCE 4mA
SET DISTANCE 20mA
MEDIUM
FILTER COEFFICENT
BLIND DISTANCE
DISPLAY
RL1 THRESHOLD
RL2 THRESHOLD
►
0700 mm
RL1 THRESHOLD
When confi rming with the ENTER button the maximum level threshold value storage, in the example 700m, the
METER activates RL1 with the following default settings for level alarm threshold:
1) MIN / MAX = MAX; maximum level alarm
2) DELAY = 0 sec.; no switching delay
3) SECURITY = YES; relay de-energized, and contact open, during the maximum level alarm
4) ENABLE / DISABLE = ENABLE; alarm threshold function enabled
5) MIN/MAX HYSTERESIS mm = 40mm
To change these relay settings is necessary to access the advanced setup menu and any subsequent changes
to the RL1 threshold value not affect the relay custom settings..
METER - quick setup