Multilog 2

The HWM Multilog 2 is a versatile multi-channel data logger with multiple analogue, digital, and serial inputs, it allows simultaneous monitoring of flow, pressure, and leakage, giving operators a complete picture of network conditions to spot inefficiencies and leaks early. Its GSM/GPRS communications provide reliable remote data transfer, ensuring field data is always available for faster, more accurate decision-making.

The IP68-rated housing ensures long-term durability in submerged or harsh environments, while its long-life battery reduces site visits and maintenance effort — delivering lower operational costs and greater uptime.

By combining robust connectivity, flexible sensor support, and a rugged design, the Multilog 2 empowers water utilities to improve efficiency, prevent costly failures, and deliver a more reliable water supply.

Applications of HWM Multilog 2

Leakage Detection – Monitor pressure and flow to identify hidden leaks and reduce non-revenue water.
District Metered Area (DMA) Management – Track consumption, flow, and pressure across zones to balance supply and detect abnormalities.
Pressure Monitoring – Continuous tracking to prevent pipe bursts, pressure surges, and service interruptions.
Flow Monitoring – Measure flow rates in pipelines to optimize network performance and distribution efficiency.
Sewer and Wastewater Monitoring – Capture surcharge or overflow events to reduce flooding risks and environmental hazards.
Event Logging – Detect transients, bursts, or unusual flow patterns to enable fast, proactive response.
Smart Water Networks – Integration into SCADA/IoT platforms for smart city water supply monitoring and control.
Rural and Remote Monitoring – Long-life battery and rugged IP68 design make it ideal for isolated installations with minimal maintenance access.

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Features

Key Features:

Multi-Channel Inputs – Supports analogue, digital, and serial sensors for simultaneous monitoring of flow, pressure, leakage, and other parameters.
Reliable Communications – Built-in GSM/GPRS ensures secure and continuous remote data transfer, even from remote network locations.
Rugged Design – IP68-rated housing provides full protection against dust and water ingress, ensuring dependable long-term operation in harsh or submerged environments.
Long-Life Battery – Extended battery life reduces site visits and maintenance costs, making it ideal for long-term deployments.
Flexible Sensor Compatibility – Works with a wide range of sensors, enabling multi-application use in one device.
Event Detection – Logs and transmits network events such as surges or unusual flow patterns for proactive response.
Compact & Robust – Designed for field deployment in demanding water industry environments.

Specification

TECHNICAL SPECIFICATIONS

Features	Specifications
Input Options
Digital	HWM SonicSens 3 ultrasonic level sensor and Leak Noise Sensor (LNS). Third party sensors using Modbus or SDI12 communication protocol.
Analogue	Internal pressure transducer. 0-20 bar / 0-200 meters head / 0-300psig, 0.1% repeatability / please note that the logger is calibrated to 10 bar as standard. (20 bar calibration must be specified at time of order if required) External pressure transducer (contact for more details), Voltage (0-1V or 0-10V), Passive or active 4-20mA Temperature
Serial Input	Uni- or bi-directional pulse Up to 64 pulses per second
Communications
Local	Hi-speed USB for connection to hand held devices, Windows tablets, laptop or desktop PC
Internal Cellular Modem	Cellular modem supporting 2G/3G/NB-IoT/LTE-M (Cat-M1) with SMS backup where available - (contact for available options). 2G/3G/4G NB-IoT can send data down to every 15 mins, with appropriate battery pack
Accelerated dial-in	Dial-in rate is increased if alarm situation is triggered. Logger can accelerate dial-in at alarm level for multiple applications - including SonicSens 3, Flow, Pressure and other alarmed sensors.
Features
Frequency	Variable logger sample rate from 1s to 24hrs (this may affect battery life and communication costs)
Logger/Site ID	7 alphanumeric characters. Readable factory set serial number in firmware
Dimensions (HXWXD)	257x129x77mm
Construction	Die-cast aluminium enclosure, powder-coat spray painted
Weight	1.6kg
Operating temp.	-20 to +60 C
Ingress Protection	IP68 submersible
Power	Typical 5 years (depending on settings and signal condition). External power connection for battery box and third-party devices
Memory	Standard recording: 2 million readings (optional up to 64 million readings and expandable HC SD card)
Fast Logging (secondary channel)	Secondary, fast channel supports sampling up to 25 Hz and record average. minimum, maximum, standard deviation or time interval between pulses (for data smoothing)
Pulse Interval Timing	Count and Event logging modes independent for both recordings. Pulse Interval Timing helps to smooth readings (e.g. leakage) in low flows by counting the time between each pulse (event mode). This is available in addition to totalling the pulses (count mode)
Alarms	Multiple alarm options including Rate of Change, Profile, Minimum Night Flow and Threshold. 16 alarms per logger. Can be programmed to auto dial up to 8 telephone numbers on alarm. Over 16 alarms per logger depending on channel configuration

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Downloads

Title	File Type	File Size	Downloads	View	Last Uploaded
Product Datasheet	application/pdf	7.9 MB			January 08 2026 16:53:16
Individual Datasheet	application/pdf	1.46 MB			January 08 2026 16:53:16

Multilog 2

Multilog 2

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Privacy Disclaimer:
We will only publish your first name. Your Last name will not published to maintain your privacy. Your mobile no will not be revealed or published to maintain your privacy. It will only be maintained in our database. You may receive product or information updates from time to time on WhatsApp. Your email ID will not be revealed or published to maintain your privacy. It will only be maintained in our database. You may receive product or information updates from time to time on email. Should you post your question, it is assumed that you agree to the above.