Water Meter ELECTO SJ - INTEGRATED RADIO MULTIPROTOCOL - DN20/R160/L130/T50
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Product code: 7744
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Maddalena ELECTO SJ Multi DN20 / R160 / L130 / T50 is an electronic single-jet cold-water meter with built-in Wireless M-Bus / OMS and LoRaWAN communication. The DN20 variant has an installation length of 130 mm and a nominal flow rate of Q3 = 4,0 m³/h, a maximum operating pressure of 16 bar, and a measuring range ratio up to R160.
Temperature Class T50 means water measurement within the range 0,1…50°C. The electronic LCD register, storage for more than 11 000 historical values, and automatic diagnostics enable monitoring of consumption, suspected leaks, reverse flow, excessive consumption, and tampering attempts. Multiprotocol communication allows the water meter to be used both in local wM-Bus reading systems and extensive LoRaWAN-based IoT installations.
Shipping costs are not included in the price.
Shipping costs are not included in the price.
Shipping costs are not included in the price.
Shipping costs are not included in the price.
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ELECTO SJ Multi — Precise Measurement and Remote Reading in One Device
Maddalena ELECTO SJ Multi is an electronic single-jet water meter equipped with multiprotocol Wireless M-Bus / OMS and LoRaWAN radio communication.
The DN20 / R160 / L130 / T50 variant is designed to measure cold water within the temperature range from 0,1 to 50°C. It combines high metrological accuracy, a local LCD display, historical data logging, and automatic transmission of readings to the supervisory system.
Accurate Measurement, Two Radio Standards and Long-Term Operation
R160
A measuring range ratio up to R160 enables accurate recording of consumption even at low water flow rates.
wM-Bus + LoRaWAN
Multiprotocol communication allows the same water meter to be used in both short- and long-range systems.
Minimum 13 years
The built-in lithium battery provides at least 13 years of operation in the manufacturer's default dual configuration.
Automatic Cold-Water Consumption Reading
Designed for Cold Water up to 50°C
The T50 temperature class defines a measured medium temperature range from 0,1 to 50°C.
This is the key difference compared with the T30/90 variant, which is designed to operate with water within the range from 30 to 90°C.
DN20, Q3 4,0 m³/h and Measuring Range Ratio up to R160
Consumption Monitoring Also at Low Flow Rates
The high R160 measuring range ratio improves the water meter's measurement capability at the lower end of the flow range.
For an accuracy class 2 water meter, the maximum permissible error is ±5% between Q1 and Q2 and ±2% in the upper flow range at water temperatures up to 30°C.
For water temperatures above 30°C, the maximum permissible error in the upper range is ±3%.
U0-D0 Class Simplifies Installation in Confined Spaces
ELECTO SJ has a U0-D0 flow profile sensitivity class.
This means no metrologically required straight pipe sections are needed upstream or downstream of the water meter, simplifying installation in shafts, distribution points, and other confined spaces.
Wireless M-Bus, OMS and LoRaWAN in One Device
Wireless M-Bus
It enables integration with short-range systems and Walk-By, Drive-By, and concentrator-based solutions.
OMS
Compliance with the OMS ecosystem supports device interoperability in automatic utility-reading systems.
LoRaWAN
Long-range communication enables readings to be transmitted to IoT infrastructure without local meter reading.
Mobile Reading or a Permanent Telemetry Network
Integrated multiprotocol communication allows the reading architecture to be adapted to a specific building or an entire network.
Wireless M-Bus can be used for local data reception, while LoRaWAN enables a permanent automatic monitoring system covering a large number of water meters to be built.
More Than 11 000 Stored Values
Datalogging
The electronic register stores more than 11 000 historical values, enabling consumption analysis over time.
Consumption Analysis
Historical data helps identify changes in the consumption profile and unusual installation behaviour.
Data Continuity
Local storage provides access to history independently of the current meter reading.
The Water Meter Detects Installation Anomalies
Electronic LCD Register
The built-in LCD provides clear local access to the water meter reading and additional information about device operation.
The electronic register is rotatable, making it easier to position the display for clear reading after installation.
IP68 and Design for Indoor and Outdoor Applications
IP68
The electronic register has a high level of protection against water and environmental factors.
IP68 — 720 h
For the Multiprotocol version, the manufacturer specifies IP68 resistance tested for 720 hours.
UV Protection
The display and cover have UV protection, supporting outdoor applications.
Minimum 13 years of operation in dual mode
The water meter has a long-life lithium battery and does not require an external power supply.
Maddalena declares at least 13 years of operation for the dual configuration. Actual battery life depends on the selected communication method and transmission parameters.
Standard 130 mm Installation Length
Key Parameters DN20 / R160 / L130 / T50
* Battery life depends on radio configuration, transmission frequency, and operating conditions.
ELECTO SJ Multi in a Remote Reading System
Multiprotocol communication allows the data collection method to be adapted to the scale and infrastructure of the facility.
Water Meter ELECTO SJ - INTEGRATED RADIO MULTIPROTOCOL - DN20/R160/L130/T50
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Gross price $270.60incl. %s VATNet price $220.00without 23% VAT
