HWM plūsmas logeris

Multi-channel Data Logger for Flow and Pressure

Manufacturer: HMW
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HWM Multilog 2 is an advanced multi-channel data logger designed for continuous monitoring of flow, pressure and other key parameters in water distribution networks. The device can record both digital and analogue signals simultaneously, providing detailed insight into network performance, water demand and potential leakage. Multilog 2 supports NB-IoT, LTE-M, 4G, 3G and 2G cellular communication, allowing reliable remote data transmission to central monitoring systems or SCADA platforms. It is particularly suitable for DMA monitoring, PRV performance analysis, minimum night flow monitoring and detection of pressure transients or hydraulic events. The logger is built for long-term deployment, offering up to 5 years of battery life, remote configuration and firmware updates without the need for site visits.
Description

Technical Specification

Measurement Inputs

Digital Pulse Inputs

  • Uni- or bi-directional pulse input

  • Up to 64 pulses per second

  • Count and Event logging modes

Analogue Inputs

  • Internal pressure transducer

  • External pressure sensors

  • 4–20 mA inputs

  • 0–10 V or 0–1 V signals

  • Temperature sensors

  • Leak noise monitoring signals

Pressure Range

  • 0–20 bar (standard calibration at 10 bar)

  • 0–200 metres head

  • 0–300 psig

  • Repeatability: 0.1%

 

Data Logging

Sampling Interval

  • Adjustable from 1 second to 24 hours

Fast Logging (Secondary Channel)

  • Up to 25 Hz sampling rate

  • Records:

    • average values

    • minimum and maximum

    • standard deviation

    • pulse interval timing

Memory

  • Standard: 2 million readings

  • Optional expansion up to 64 million readings

  • Expandable via HC SD card

 

Communication

Cellular Modem

  • 2G / 3G / 4G

  • NB-IoT

  • LTE-M (Cat-M1)

Data Transmission

  • Reporting intervals down to 15 minutes

  • Accelerated dial-in during alarm events

Local Communication

  • High-speed USB connection

  • Compatible with Windows tablets, laptops and PCs

SCADA Integration

  • Full support for WITS 1.3 protocol

 

Additional Features

Alarm System

  • Rate of Change alarms

  • Threshold alarms

  • Minimum Night Flow monitoring

  • Profile alarms

Alarm Notifications

  • Up to 16 alarms per logger

  • Automatic alerts to up to 8 phone numbers

Pulse Interval Timing

  • Improves accuracy for low-flow measurements

 

Physical Specifications

Dimensions

  • 257 × 129 × 77 mm

Weight

  • 1.6 kg

Construction

  • Rugged die-cast aluminium enclosure

  • Powder-coated finish

Protection Rating

  • IP68 fully submersible

Operating Temperature

  • −20°C to +60°C

 

Power Supply

  • Internal battery pack

  • Typical operational life up to 5 years

  • External battery connection available for extended operation

 

Sensor Integration

Multilog 2 supports integration with a wide range of sensors and devices:

  • Digital water meters

  • SonicSens ultrasonic level sensors

  • Modbus devices

  • SDI-12 sensors

  • RS232 interfaces

  • Serial meter interfaces (Badger, Sensus, Neptune)