SGM LEKTRA FLOWMETER Manual de usuario
FLOWMETER
ultrasonic ow transmitter
technical documentation EN Rev. of 19/10/2021
Page 2 of 36 www.sgm-lektra.com
FLOWMETER - contents
CONTENTS
page 3
page 4
page 5
page 6
page 7
page 9
page 11
page 14
page 36
1-WARRANTY
2-PRODUCT
3-PERFORMANCE SPECIFICATIONS
4-DIMENSIONS
5-INSTALLATION
6-ELECTRICAL CONNECTIONS
7-LOCAL OPERATOR INTERFACE (LOI)-VL601
8-SETUP
10-FACTORY TEST AND QUALITY CERTIFICATE
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FLOWMETER - warranty
Products supplied by SGM LEKTRA are guaranteed for a period of 12 (twelve) months from delivery date according 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 36 www.sgm-lektra.com
FLOWMETER0F4DS
24Vdc 20÷30Vdc
FR0111600193
2
3
1Mod.
P.S.
S.N.
FLOWMETER - features
2- PRODUCT
1. Anticondensation lter
2. M20 skintop
3. VL601 (opt.)
4. Sensor
2.1 IDENTIFICATION
Each meter has an adhesive identication plate on which are the meter main data.
The following picture describes the information and data on the identication plate.
1
1
2
3
4
1. Product code 3. Serial number2. Power supply
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3-FEATURES
FLOWMETER - features
Housing/sensor material
PC or Al / PP or PVDF wetted part
Mechanical installation
2” GAS M (PP ange DN80 opt.)
Protection degree
IP67/IP68 (Sensor)
Electrical connection
Internal push connectors
Working temperature
-20 ÷ +60°C
Pressure
from 0,5 to 1,5 bar (absolute)
Power supply
12Vdc / 24Vdc
Power consumption
1,5W (4-wires)
Analog output
4...20mA, max 750ohm
Relays output
n°2 3A 230Vac (n.o.)
Digital communication
MUDBUS RTU
Max measure range
max 0.25 ÷ 5m
In case of non perfectly reecting surfaces, the maximum distance value will be reduced
Blind distance
0,25m
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 MODBUS RTU
Warm-up
1 minutes typical
LCD Display
Plug-in display/keyboard 4 buttons matrix LCD
Page 6 of 36 www.sgm-lektra.com
4-DIMENSIONS
FLOWMETER - dimensions
4.1 MECHANICAL DIMENSIONS
66
127,5
223
Ø55,5
Ø95
127,5
Ø95
2" G
66
232,5
Ø55,5
2" G
239,5
127,5
Ø55,5
PP HOUSING
ALUMINIUM HOUSING
PP HOUSING + EXTENSION
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5.1 MOUNTING PRECAUTIONS
5.1.1 Mounting position
- Use a protective cover to protect the sensor from weather and direct sunlight (b).
- Do not install the sensor near the load zone (a).
- Make sure that in the sensor emission beam (lobe “α”) there are no obstacles (c) that can be intercepted as level.
- Make sure that there is not foam presence on the product surface to be measured.
Lobo “α“
FLOWMETER 5mt 10°
Make sure that the FLOWMETER distance from the weir channel point is equal or greater than to the minimum allowed
distance. In the following gure, the example with a Venturi channel (min. dist.4xb0) and a Palmer-Bowlus channel
(min. dist. D/2) prefabricated (available in our catalog)..
Venturi channel Palmer Bowlus
FLOWMETER - installation
5-INSTALLATION
Page 8 of 36 www.sgm-lektra.com
FLOWMETER - installation
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
where the sensor can not measure.
Blind Distance
0.25mt (5mt)
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No
c
No
c
-
+
A
B
RL1
RL2
4÷20mA
MUDBUS
12Vdc / 24Vdc
FLOWMETER - electrical connections
6-ELECTRICAL CONNECTIONS
6.1 WIRING
1) Separate the engine control cables or power cables from the FLOWMETER 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 inltration 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 10 of 36 www.sgm-lektra.com
1
2
3
USB/RS485
FLOWMETER - electrical connections
6.3 DIGITAL COMMUNICATIONS CONNECTION
7.3.1 MODBUS RTU PC connection
1) FLOWMETER with MODBUS RTU communication protocol
2) USB/RS485 interface module, cod.694A004A
3) MODBUS RTU communication S/W, cod.010F119A, for FLOWMETER transmitter
With this soware is possible:
- connect, by selecting the UID address, the FLOWMETER transmitters in MODBUS RTU network
- read on your PC monitor all measures in reading and FLOWMETER operation data
- programming all FLOWMETER conguration parameters
- storing on les, data logger function; FLOWMETER measures in reading and operating states
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