ERGOMERA-125.BA Ultrasonic Water Meter
The ERGOMERA-125.BA is a stand-alone ultrasonic water meter designed for water supply, wastewater, and industrial process applications in municipal utilities and industrial facilities. High measurement accuracy, reliability, and a long service life are ensured by the ultrasonic transit-time measurement method, with no moving mechanical parts. The meter supports single-channel and dual-channel measurement, monitoring of flow rate, volume, pressure, and temperature, operation with wastewater and chemically aggressive liquids, and integration with SCADA, GIS, automated commercial metering systems, industrial process control systems, and other remote monitoring and dispatching platforms. The meter is certified in accordance with the requirements of the Technical Regulation for Legally Regulated Measuring Instruments, approved by Resolution No. 163 of the Cabinet of Ministers of Ukraine dated 24 February 2016. **Conformity assessment procedure: Modules B + D.**
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PURPOSE & SPECIFICATIONS
ERGOMERA-125.ВА
Ultrasonic Water Meter
A battery-powered ultrasonic water meter for commercial and process metering of drinking water, process water, seawater, and wastewater, as well as other liquids — on one or two pipelines. It simultaneously measures flow rate, pressure, and temperature.
Certified in accordance with the requirements of the Technical Regulation on Measuring Instruments (Resolution of the Cabinet of Ministers of Ukraine dated 24.02.2016 No. 163). Conformity assessment scheme — Module B+D.
What It Measures
Drinking water
Process (technical) water
Seawater
Wastewater (domestic and industrial)
Non-aggressive liquids (alcohols, oils, etc.)
Aggressive liquids (acids, alkalis, solutions)
Emulsions
Suspensions
Key Advantages
High measurement accuracy (accuracy class 1 and 2 per DSTU EN ISO 4064)
Ultrasonic transit-time method — no moving parts
Two-channel measurement with support for reverse flow
Extended data archives (hourly, daily, monthly, process, fault and tampering logs)
Near real-time data transmission
Open protocols: Modbus RTU/TCP, M-Bus, Ergo
High degree of enclosure protection — IP65 (IP68 optional)
Minimal maintenance and long service life — MTBF of 120,000 hours
Design Features
Threaded (union) flow sensors (DN15–DN40)
Flanged flow sensors (DN15–DN500)
Flangeless (weld-in) flow sensors
Sensor servicing without draining the pipeline (gate-valve design, RSHVS)
Installation into an existing pipeline (type B2, DN250–DN500)
Installation under pressure (type B2-RSHVS, gate-valve design, DN250–DN500)
The meter consists of a measuring transducer (computer/converter unit), one or two ultrasonic flow transducers, and, where required, a set of temperature and pressure transducers.
Technical Specifications
Characteristic | Value |
|---|---|
Media temperature | 0.1…90 °C (up to 280 °C optional) |
Media | Water, wastewater, other liquids |
Flow sensor type | B1, B2 (insertion sensors) |
Operating mode | Continuous |
Power supply | Built-in + 220 V adapter |
Data retention | ≥ 12 years |
Display | LCD (ISO 4064) |
Keypad | 4-button |
Enclosure protection | IP65 (IP68 optional) |
Flow sensor protection | IP54 / IP67 / IP68 / IPX5 / IPX7 |
Mounting | DIN rail TS35 |
Interface | RS-232, DB9 (DCE), up to 10 m |
Protocols | Modbus RTU/TCP, Ergo, M-Bus |
Additional interfaces | RS-485, Ethernet, WMBus, LoRaWAN, NB-IoT |
Pulse outputs | 2 |
Analog outputs | 4–20 mA (optional) |
Cable length | up to 30 m |
Pressure / temperature channels | up to 3 / up to 3 (Pt1000) |
Hourly archive | 1,900 records |
Daily archive | 365 records |
Monthly archive | 44 records |
Process archive | 4,800 records |
Fault and tampering logs | Available |
Self-diagnostics, time sync | Available |
Additional modes | Batch dosing, alarm signaling, setpoint-based control |
Mounting orientation | Horizontal, vertical (downward flow not recommended) |
Sealing | Hardware + software |
Access protection | Jumper switch |
Metrological Characteristics
Parameter | Value |
|---|---|
Accuracy class | 1, 2 (DSTU EN ISO 4064) |
Measurement method | Ultrasonic transit-time |
Measurement channels | 2 (standard mode), 1 (dual-beam mode) |
Flow velocity range | 0.02–25 m/s |
Maximum working pressure | up to 40 MPa |
Measurement error limits | ≤ 1% (in the Q2–Q4 range) |
Flow range (Q1–Q4) | per DSTU EN ISO 4064 |
Nominal diameters | DN15–DN500 (and above DN800 for insertion-type design) |
Measured parameters | volume, flow rate, temperature*, pressure* |
MTBF | 120,000 hours |
*with the corresponding transducers installed
Full size range (DN15–DN1200), design variants (threaded, flanged, insertion), nominal pressure ratings, lengths, and pressure losses are available on request or in the full technical documentation.
Integration Tools
Digital interface RS-232 (DB9, DCE)
Non-volatile data archive
Modbus RTU/TCP, M-Bus, Ergo protocol support
Optional: RS-485, Ethernet, WMBus, LoRaWAN, NB-IoT
Connection of external modems — both battery-powered and mains-powered
Pulse outputs (flow transmission / alarm signaling)
Analog outputs 4–20 mA (optional)
Integration with SCADA, energy metering, dispatch, and GIS systems
Near real-time transmission of current values and archives
Operation as part of distributed monitoring systems
Connection of external sensors (pressure, temperature, alarms)
Proprietary software for reading and processing data
Applications
Water utilities, pumping and sewage pumping stations
Industrial facilities, process pipelines
Agricultural and irrigation systems
Custody-transfer (commercial) metering between parties
Sites with aggressive, contaminated media and wastewater
Standard Delivery Set
Measuring transducer (computer/converter unit)
Ultrasonic flow transducer(s)
Connection cables
Packaging, user manual, data sheet/certificate
Available as options: temperature and pressure transducers, oscilloscope/diagnostics module, flood sensor, modem, mounting cabinet, video graphic recorder, calibrator, printer, data logging/processing software, additional interfaces.
Warranty and Service
Standard warranty period — 12 months from the date of sale. Calibration (verification) interval — 4 years. Fully designed and manufactured in Ukraine, with local technical support.
Sales department: +380 67 382 14 97 E-mail: zsn@ergomera.dp.ua Website: www.ergomera.com
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