Vega Absolute SHVE User manual

iotvega.com betar.ru
Electronic Water Meter SHVE, SGVE
with LPWAN 868 VEGA radio channel
(the second generation1)
User Manual
1In production since December 2020

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CONTENTS
_Toc66717057
Introduction.......................................................................................................................................................................................4
1.1 Purpose ...................................................................................................................................................................................5
1.2 Functions.................................................................................................................................................................................5
1.3 Specification............................................................................................................................................................................6
1.4 Operation principle.................................................................................................................................................................7
2 DESCRIPTION OF BASIC FUNCTIONS...............................................................................................................................................9
2.1 Readings displaying ................................................................................................................................................................9
2.2 meter’s operation modes .......................................................................................................................................................9
2.3 Optical port ...........................................................................................................................................................................10
2.4 Internal clock.........................................................................................................................................................................10
2.5 Electronic magnetic seal .......................................................................................................................................................10
2.6 LoRaWAN ..............................................................................................................................................................................10
2.6.1 Connection to the network ...............................................................................................................................................10
2.6.2 Class А device.....................................................................................................................................................................11
2.6.3 Communication and collection periods ............................................................................................................................11
2.6.3.1 Communication period...................................................................................................................................................11
2.6.3.2 Data collection period ....................................................................................................................................................11
3 “VEGA LORAWAN CONFIGURATOR” APPLICATION.......................................................................................................................12
3.1 Operating modes ..................................................................................................................................................................12
3.2 Application interface ............................................................................................................................................................12
3.3 Connection of meter to computer........................................................................................................................................13
3.3.1 Adapter connection, driver installing................................................................................................................................13
3.3.2 Optical port activation.......................................................................................................................................................15
3.4 “Device info” tab...................................................................................................................................................................17
3.4.1 Basic description................................................................................................................................................................17
3.4.2 Fields description...............................................................................................................................................................18
3.5 “LoRaWAN settings” tab.......................................................................................................................................................20
3.5.1 Basic description................................................................................................................................................................20
3.5.2 Fields description...............................................................................................................................................................20

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3.6 “Vega SHVE/SGVE v.2” tab ...................................................................................................................................................24
3.6.1 Basic description................................................................................................................................................................24
3.6.2 Fields description...............................................................................................................................................................24
3.7 Device settings by default ....................................................................................................................................................25
4 LORAWAN COMMUNICATION PROTOCOL....................................................................................................................................26
4.1 Transmitting messages .........................................................................................................................................................26
4.1.1 MODEM transmits packets with the following types.......................................................................................................26
4.1.2 Time correction request ....................................................................................................................................................26
4.1.3 Packet with current settings..............................................................................................................................................26
4.2 MODEM Recieves packets with the following types ...........................................................................................................27
4.2.1 Packet with settings request .............................................................................................................................................27
4.2.2 Packet with settings...........................................................................................................................................................27
4.2.3 Unlock LED indicator command ........................................................................................................................................28
4.2.4. Time correction.................................................................................................................................................................28

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INTRODUCTION
This manual is developed for electronic water meters SHVE, SGVE (hereafter – meter, device) and
contains a description about specification, functionality, interfaces, configurator application and
communication protocol and some other data which is necessary to meters exploitation.
This manual is targeted at specialists familiar with installation work fundamentals of electronic and
electrical equipment.
ATTENTION! The meter shall be installed and adjusted by qualified specialists to ensure proper operation
of the device.

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1 TECHNICAL DESCRIPTION
1.1 PURPOSE
SHVE, SGVE meters (fig. 1) are designed to measurement of drinking flowing through the pipeline
water volume according to СанПиН 2.1.4.1074-2001 with the temperature from 0,1 to 30 °С for cold water
meters (SHVE) and from 0,1 to 90 °С for hot water meters (SGVE with a pressure of water in pipeline no
more than 1.0 MPa (10kg/sm) and further collection and transmitting of this data to LoRaWAN network via
radio frequency band 860-1000 MHz.
SGVE meters are multipurpose and may be used as for measurement of cold as hot water volume,
but SHVE meters are only for cold water.
Figure 1 — Appearance of meter
1.2 FUNCTIONS
Meters support the next functions:
•displaying the counted water consumption in cubic meters via the LED indicator;
•fixation of external magnetic field influence (electronic magnetic seal);
•control of internal battery charge;
•control of temperature inside device case (reference Information);
•registration of random reverse flow of water (displaying the counted water modulo consumption in
forward and the reverse direction via the LED indicator);
•leak fixation (continuous consumption < 0.3 cubic meter per 30 minutes);
•fixation of a breakthrough (continuous consumption > 0.3 cubic meter per 30 minutes);
•binding an emergency situation to the date and time and its saving;
•testing in the manufacture and changing the parameters of the meter during operation through the
optical port;
•pre-configured schedule for transmitting the collected data in the LoRaWAN network via radio
communication (choice the communication period);
•pre-configured schedule for the data collection and saving in the internal memory (choice the data
collection period);
•emergency transmitting of the collected data (extraordinary session);

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•emergency transmitting of the alarm message in case of one of the next emergency situations:
◦fixation of external magnetic field influence;
◦low internal battery charge;
◦leak fixation (continuous consumption < 0.3 cubic meter per hour);
◦fixation of a breakthrough (continuous consumption > 0.3 cubic meter per hour).
•there are two operation modes (“Storage” and “Operation”);
•control of the battery passivation level and automatic depassivation when it is necessary.
1.3 SPECIFICATION
The main specification is shown in the table 1.
Table 1
Parameter Value
Basic
Meter type
SHVE-15
SGVE-15
Nominal diameter, mm
DN15 (15 mm)
Ambient temperature, оС
+5…+55
Relative humidity of ambient air, %
от 0 до 100
Ambient pressure range, kPa
от 86 до 106
Temperature class
Т30
Т90
Maximum admissible pressure
MAP10
Pressure loss
∆p 63
Flow profile sensitivity classes
U0/D0
Ratio Q3/Q1(HR/VR)
100/50
Flow rate HR/VR, m 3/h
Maximum Q4
2,0/2,0
Permanent Q3
1,6/1,6
Transitional Q2
0,025/0,051
Minimum Q1
0,016/0,032
Capacity of indicator, m3
99999,9999
Resolution of the reading, m3
0,0001
Reverse water flow
The meter does not allow measurements in the reverse
flow. It is recommended to install a non-return valve.
Average service life of the meter, years
12
Interface
Optical port, LoRaWAN radio channel
Weight of one pulse on the optical port, m3
0,000025
0,000050
Pulse duration at the optical port, μs
100
Radio
Protocol
LoRaWAN

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Parameter Value
Specification
1.0.3
Nominal transmitter power, mW
25 (configurable)
LoRaWAN device class
A
Number of LoRa channels
16
Frequency plan
RU868, EU868, IN865, AS923, AU915, KR920, US915,
KZ865, custom (EU868 based)
Activation type
ABP and OTAA
Communication
period, h
Configurable, h
1, 6, 12, 24
Service
By the event
(Hall sensor closing)
Recommended, h
12
Data collection period, h
1, 6, 12, 24
Black box, messages
200
LoRa antenna type
Internal
Sensitivity, dBm
-138
Radio coverage in restrained urban conditions, km
Up to 5
Radio coverage within line of sight, km
Up to 15
Power
Power source
Internal, Lithium Battery 3.6 V
Battery size
А (ER17505 or LS17500)
Operating time from the battery power, years
Up to 6
(with communication and data collection periods are
equal to 12 hours)
Replacement period
The factory-installed battery must be replaced after an
initial calibration interval of 6 years
Case
Length, mm
110
130
Height, mm
70
75
Connecting dimensions, inch
G3/4-A
G1-A
Ingress protection rating
IP54 (ГОСТ 14254-2015)
Weight without kit assembly parts, kg, max
0,5
1.4 OPERATION PRINCIPLE

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Operation principle based on measurement of the impeller turnovers number. Impeller located in a
flow part of meter and rotated by water flowing. The impeller turnovers number is proportionally to water
flowing volume. A bipolar magnet is molded into the impeller. Counting Hall sensor takes information about
the impeller turnovers number from bipolar magnet.
Meter always on, but there is in a low power consumption mode most of the time.

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2 DESCRIPTION OF BASIC FUNCTIONS
2.1 READINGS DISPLAYING
The device has LED indicator on a faceplate for visual displaying of the readings (fig. 2). Readings are
displayed in cubic meters up to the fourth decimal point on a cumulative total.
During the operation of the meter, the number of packets sent over the radio channel is displayed
on the LED indicator every 2 minutes, while the “SP” symbol is displayed in the most significant bit (on the
far left).
Figure 2 — Device basic elements
When the meter is turned on for the first time, the following parameters are displayed one by one
on the LED indicator (each one for the 5 seconds):
•name of the built-in software of the meter;
•software version number;
•software ID (check sum);
•method of check sum calculation;
•serial number of the meter in the “SХХХХХХХХ” format (for example, “S40488568”);
•date of the meter verification in the “Id dd.mm.yy” format (for example, “Id 01.01.20”).
2.2 METER’S OPERATION MODES
To optimize energy consumption, the meter has two operation modes:
•"Storage" - the metrological part works (the meter measures the volume and displays the
accumulated water consumption in cubic meters), the communication part does not work (the
meter does not transmit data via the radio channel). In the "Storage" mode, the LED indicator
displays readings in the "СХХХХ.ХХХХ" format (for example, "С0008.7802");
•"Operation" - the metrological and communication parts work.
The meter is supplied by default in the "Storage" mode, to remove from which it is necessary to
bring the external magnet for 15-20 seconds to the area of reception of the external magnetic field, see
p.2.5.
External magnetic field
reception area
Optical port
LED indicator

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2.3 OPTICAL PORT
There is an optical port (fig. 2) for connection to computer, which also used for testing. The adapter
“Opticalport-USB” connected to the USB-port of computer carries out connection between the optical port
and computer.
“Vega LoRaWAN Configurator” application allows reading and changing the meters parameters. See
detailed application description in a part 3.
The opto-emitter of the optical port is used as a technological optical pulse output for checking the
meter during production. During operation, the meter is verified by the comparison method.
2.4 INTERNAL CLOCK
Time on internal clock may set automatically when the device connects to the “Vega LoRaWAN
Configurator” application and may corrected via LoRaWAN network.
“IoT Vega TimeCorrector” application carries out an autocorrecting procedure via LoRaWAN
network. The device sends time correction request once a week.
2.5 ELECTRONIC MAGNETIC SEAL
The meter has a Hall sensor for fixing of the external magnetic field and it is located under faceplate
of the device (fig.2). That function named as an electronic magnetic seal.
From the 1st second of external magnetic field influence, which strong enough, the meter LED
indicator displays warning symbol “b” at the high order digit place (first index) but readings still displaying.
If the external magnetic field influence continues more than 5 minutes, then device locks LED
indicator and send emergency message with lock flag. Herewith, the LED indicator displays warning symbol
“b” but readings not displaying. Only the dispatcher via the LoRaWAN network can unblock a LED indicator
using a special command.
There are device controlling functions, which activated by a magnet getting on external magnetic
field reception area in table 2.
Table 2
Time of external magnetic
field influence
Event Comment
Less than 2 seconds
Optical port activation for 20
seconds
After 20 seconds, the optical port is
deactivated if it is not in use
From 15 to 20 seconds
Emergency communication
session, switching from
“Storage” mode
While communication session the LED
indicator displays warning symbol “p” at
the high order digit place but readings
still displaying
5 minutes and more Lock of the LED indicator
The LED indicator displays warning
symbol “b” but readings not displaying
2.6 LORAWAN
2.6.1 CONNECTION TO THE NETWORK
Meter supports two activation methods in the LoRaWAN network:
•ABP (Activation By Personalization) – meter sends data to the LoRaWAN network according to pre-
configured schedule (every 12 hours by default).