MSFM S2U ultrasonic flow meter

The MSFM S2U is an ultrasonic a versatile Ultrasonic Doppler Flow measurement system, ideal for use in open channels or partially-filled pipes. The MSFM S2U ultrasonic flow meter offers accurate monitoring of raw sewage, industrial effluents and storm waters, with automatic GPRS data retrieval as standard and worldwide usage capabilities. The additional standard input accepts the Detectronic Ultrasonic Level Sensor for storm overflow monitoring.

The MSFM S2U is best used in dirty water applications and provides the most accurate flow measurements available, with minimal maintenance.






three heads are better than one

Thanks to its custom-designed antenna which improves signal sensitivity in underground locations, the MSFM S2U records data from three sensor inputs. Information on the level, velocity and Aux Level (CSO) readings can be taken at regular intervals between 1 and 60 minutes. This is then sent to a host computer via SMS or GPRS at a user-selectable frequency (typically once a day, once a week or once a month).

The ultrasonic level sensor uses patented algorithms to reliably determine the time required for the incident soundwave to reflect back onto the sensor, compensating for speed of sound change with temperature.

Intelligent Electronics

The Multi-Sensor Flow Monitor is able to optimize the measurement process for minimal power consumption. The area velocity sensor uses evolutionary Doppler processing technology to ensure accurate measurement.

Detectronic’s DetecDataPro software enables heightened levels of accurate analysis and alarms from the MSFM are re-transmitted to the relevant field-support staff via SMS or email.

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product specifications

Velocity Sensor – Dual Piezoelectric Elements
Range: 0.03m/s to 4.00m/s (resolution 1mm/s)

Depth Sensor (Hydrostatic Pressure) 
Range: 0.0m to 6.0m (resolution 1.0mm)

Optional Level Sensor 
Range: 0.0m – 3.00m (with 200mm deadband)

Optional Depth Sensor (PTI) Pressure Transducer Interface
Ranges available between 0-3m and 0-100m

Data Logger and GPRS/GSM Communication
Recording interval programmable between 1 minute and 1 hour

Main Sensor Power Supply and Operating Capacity
12V ATEX Li-ion rechargeable battery pack

Alarm Dial Out
High/low threshold and profile alarms

Additional I/O
2 analogue/digital input channels and 1 pulse output

Operating temperature: -20°C to +60°C
Protection: IP68/NEMA6P

SIRA 12 ATEX 2110X Ex II 1G Ta -40°C to +60°C
IEC Ex SIR 12.0044X Ex ia IIB T4 Ga Ta -40°C to +60°C

The MSFM is a fantastic piece of kit. Its a workhorse that delivers accurate data consistently – unlike some of the cheaper imitations around which need constant attention.



case studies

Sedgemoor council flood prevention

Flow monitoring project to deliver telemetry and log water levels

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Heapham lake and severn trent water

Helping  prevent sewage leaks at sites of special scientific interest

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Brewery wastewater monitoring

We teamed up to help a Yorkshire brewery better understand their wastewater network

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Contact Us


+44 (0)1282 449124

Regent St
Whitewalls Industrial Estate


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