Kit | Electronic cold water meter | UzMeter-50 + Modem

UzMeter DN50 electronic cold-water meter with SWEM modem

💧 The UzMeter DN50 + SWEM modem is a ready-to-use solution for measuring cold-water consumption and transmitting readings remotely. The set is suitable for commercial metering at industrial facilities, production sites, administrative buildings, residential complexes and utility systems.

The set uses an ultrasonic water meter. It measures water flow by comparing the travel time of an ultrasonic signal through the flowing water. There is no rotating impeller in the measuring section, so mechanical contaminants have less effect on the wear of the measuring mechanism.

The meter is powered by an integrated battery, while readings are transmitted through a separate SWEM modem. The SIM card and mobile-operator services are purchased separately.

📦 Package contents

• UzMeter DN50 electronic ultrasonic cold-water meter;
• SWEM data-transmission modem;
• communication cable between the meter and modem;
• gaskets;
• passport and supporting documentation;
• certificate;
• a magnet for display control or data viewing when included with the supplied version;
• factory packaging.

The exact package contents should be confirmed before payment because individual production batches may differ.

✅ Main advantages

• ultrasonic measuring principle;
• no rotating measuring impeller;
• cold-water metering on a DN50 pipeline;
• flanged connection;
• integrated battery power;
• IP68 enclosure protection;
• remote transmission of readings;
• connection to an automated water-metering system;
• RS-232 and RS-485 interfaces;
• data transmission through GSM/GPRS and a 2G network;
• suitable for commercial metering;
• convenient for locations where manual reading is difficult.

🏭 Applications

• industrial enterprises;
• workshops and factories;
• shopping and business centres;
• warehouses and logistics facilities;
• residential complexes and apartment buildings;
• hotels and dormitories;
• medical and educational institutions;
• pumping stations;
• utility networks;
• commercial water-metering assemblies.

📡 How readings are transmitted

The meter measures the instantaneous flow and accumulated water volume and sends the data to the SWEM modem. The modem then transfers the information through a mobile network to a compatible metering platform.

Supported connection and data-transmission methods may include:

• GSM/GPRS 900/1800 MHz;
• 2G network;
• RS-232;
• RS-485.

RS-232 and RS-485 are wired communication interfaces used between the meter, modem, controller or supervisory system.

Mobile-network operation requires an active SIM card, a suitable tariff, a positive balance and stable operator coverage at the installation location.

📶 Conditions for stable modem operation

• availability of the selected operator’s 2G network;
• an active SIM card;
• an enabled data tariff;
• correct APN settings;
• sufficient mobile-signal strength;
• protection of cables and connectors against moisture;
• modem access to a compatible server;
• correct configuration of the reading platform.

Signal may be weakened in a basement, reinforced-concrete chamber or metal enclosure. Modem relocation, an external antenna or another communication method may then be required.

🌊 Ultrasonic measuring principle

The meter compares the travel time of an ultrasonic signal in the direction of water flow and against the flow. The difference is used to calculate water velocity, flow rate and accumulated volume.

This measuring method provides:

• stable operation without rotating parts;
• reduced mechanical wear;
• measurement of low flow rates;
• low pressure loss;
• convenient automatic data collection;
• long-term operation from the integrated battery.

📊 Operating characteristics

• nominal diameter: DN50;
• water type: cold water;
• measuring principle: ultrasonic;
• connection: flanged;
• measuring range: 0.25 to 78.75 m³/h;
• flow values stated on the website: minimum 0.25 m³/h, nominal 63 m³/h and maximum 78.75 m³/h;
• operating pressure: up to 1600 kPa, equivalent to 16 bar;
• water temperature: +5 to +55 °C;
• stated measurement error: 2%;
• protection rating: IP68;
• meter power supply: integrated battery.

A nominal flow rate of 63 m³/h appears unusual for DN50. It should therefore be checked against the passport of the supplied meter before publication or use in a system calculation.

🛡️ IP68 enclosure protection

IP68 indicates complete protection against dust and enhanced protection against prolonged exposure to water under the conditions specified by the manufacturer.

The meter’s IP68 rating does not mean that the modem, cable connections and SIM card may remain underwater without additional protection. The modem must be installed according to its own documentation.

🔩 Flanged-connection requirements

• DN50 size compatibility;
• PN pressure rating;
• flange standard;
• number and arrangement of bolt holes;
• meter installation length;
• gasket dimensions;
• bolt type and size;
• pipeline alignment;
• water-flow direction must be checked.

A matching DN50 designation alone is insufficient. The flanges must also match in operating pressure, dimensions and bolt-hole arrangement.

🧭 Recommended metering assembly

1. Upstream shut-off valve.
2. DN50 mesh filter.
3. Required straight pipe section.
4. UzMeter DN50 meter.
5. Check valve.
6. Downstream shut-off valve.
7. SWEM modem installed where communication is stable.

Installation of a DN50 PN16 flanged mesh filter upstream is recommended to capture sand, rust and other contaminants.

A water-meter installation service can be ordered from Schetchik.uz. The exact work and material scope is determined after site inspection or review of photographs.

🛠️ Installation requirements

• the arrow on the housing must point in the direction of water flow;
• the pipeline must remain completely full;
• permanent air accumulation must be avoided;
• the meter must not support the weight of the pipeline;
• the pipeline must have secure supports;
• straight-pipe lengths are determined by the meter passport;
• the flanges must be aligned without distortion;
• the bolts must be tightened evenly in a cross pattern;
• the meter and display must remain accessible for servicing;
• the modem should be installed where signal strength is stable;
• the cable must not be stretched, crushed or routed close to strong interference sources.

📦 Purchased separately

• SIM card;
• mobile-operator tariff;
• companion flanges;
• fasteners when not included;
• shut-off valves;
• mesh filter;
• check valve;
• additional supports;
• external antenna;
• installation work;
• official sealing;
• complex integration with external systems.

⚠️ Check before ordering

• exact meter model and passport;
• installation length;
• flange pressure rating and standard;
• actual flow range;
• certificate validity;
• initial verification date;
• package contents;
• availability of a 2G network at the site;
• modem compatibility with the selected platform;
• who provides the SIM card;
• who configures the personal account;
• water-supplier requirements for commercial metering.

📌 Summary

The UzMeter DN50 + SWEM modem is a set for automated commercial cold-water metering. It combines ultrasonic measurement, independent battery operation and transmission of readings through a mobile network or wired communication interface.

The set is particularly useful at facilities where regular readings are required without manual meter inspection.