FloSonicUltrasonic Air Flow Sensor

Mine Radio Systems (MRS) Ultrasonic Airflow Sensor (UAFS) is

the industries most reliable and accurate air flow sensor designed

for mining and tunneling applications. Engineered based on the

ultrasonic time-of-flight principle, the UAFS application provides

mining and tunneling operators with the most precise monitoring

and warning solution available.

How does it work?

MRS UAFS consists of a control module and two transducers

mounted diagonally on opposite sides of a tunnel. Once hardware

installation is complete the tunnel’s dimensional parameters must

be programmed into the control module. Direct readings are

easily obtained locally via the LED display or remotely via Modbus®

and/or an isolated 4-20mA output.

Unlike many other commercially available air flow sensors, UAFS

monitors the air flow through a complete drift cross section. This

technology virtually eliminates the errors associated with turbulent

flow near the sensor. Ultrasonic bursts are transmitted between the

transducers. The effect of the air velocity on these bursts is measured

and used to precisely calculate the air flow or air velocity. MRS UAFS

reporting accuracy is the industry’s most reliant; as its reports are

independent of temperature, pressure, and humidity which can create

a false or inaccurate reading.

MRS Best-in-class Solutions

With over 400 installations at mining and tunneling sites in over 50

countries, MRS world-class network of clients and partners proves

to be the standard for success. MRS systems have been developed

specifically to meet the certification standards for hazardous and non-

hazardous environments throughout the world. MRS is an ISO 9001

registered company producing the industry’s highest level of quality

in all its systems and components.

Features• Accurate exhaust / intake measurements

• Remote flow measurements in dangerous or restricted areas

• Ventilation automation and controlled recirculation

• Timely measurement of air flow reversal in the event of a fire

• Early detection of fan malfunction or shutdownFLOSONIC AIRFLOW SENSOR [UAFS]

COMPONENT BRIEF

ï Worldí s most reliable and accurate air flow sensor designed for mining and tunneling applications

ï Includes accurate exhaust/intake measurements, remote flow measurement in dangerous or restricted areas, ventilation automation and controlled recirculation, timely measurement of air flow reversal in the event of fire and early detection of fan malfunction or shutdown

ï Consists of a control module and two transducers

Technical Specifications

Operating Principle Ultrasonic (time of flight)

Allowable Tunnel Width 2 to 15 metres

Air Velocity Range 0.1 to 30 m/s 20 to 5900 fps Accuracy 5%

Resolution 0.001 m/s

Operating Temperature 0º C to 50º C

Display 7 segment LED & unit indicators

Current Loop 4 to 20 mA output (isolated) - air flow

Alarm Open collector alarm

RS232 ModbusÆ and programming port

Power Supply 24 VDC

OperatingCurrent (peak)

150 mA

Weight & Dimensions 8.62kg (19lbs) 27cm x 16cm x 23cm (10.7in x 6.3in x 9.1in)

Technical Specifications

For more information, please visit our website or contact our representatives at the MRS Office nearest you.

hEAd OFFiCEMine Radio Systems Inc. 394-Highway 47, R.R. #1Goodwood, OntarioL0C 1A0tel. +1 905 640 1839fax. +1 905 640 1649

AustrAliAMRS (Pacific) Pty Ltd U3/14 Atbara StreetKalgoorlieW.A. 6430

tel. +61(0) 890 91 9999fax. +61(0) 364 23 3331

MRS (Pacific) Pty Ltd 184 Stony Rise RoadDevonportTasmania 7310

tel. +61(0) 364 23 3333fax. +61(0) 364 23 3331

CANAdA Mine Radio Systems Inc. 3030 Hwy. 69 N Val Caron P3N 1R8 tel. +1 705 897 2440fax. +1 705 897 1336

ChiNAMine Radio Systems Ltd.P.O. Box 10049Central Hong Kong

tel. +852 3500 0638 +1 416 642 3967

Cis (Commonwealth of Independent States)

SIA AkvariusDzelzavas Street #74, Office 313 Riga, Latvia LV-1082

tel. +371 6754 6517fax. +371 6787 0405

mEXiCOMine Radio Systems Inc. Abedules #96 Villa de las Flores 55710Coacalco, Edo. de Mex. Mexico

tel. +52 555 874 9540fax. +52 555 874 5034

russiAMine Radio Systems-Russia Ltd.Proletarsky Street #49Ilyinsky VillageRamensky DistrictMoskovsky OblastRussia 140121

tel. +7 495 788 5629fax. +7 495 788 5629

sOuth AFriCAMine Radio Systems (Africa) (Pty.) Ltd. Unit 2, 714 Hendricks StreetHermanstad,Pretoria, 0082South Africa

tel. +27(0) 12 379 9497fax. +27(0) 12 379 9499

uNitEd kiNGdOmMine Radio Systems (Europe) Ltd.Unit 2, Rok CourtParkway, DentonManchesterM34 3SG

tel. +44(0) 161 337 4450fax. +44(0) 161 336 2278

usAMine Radio Systems Corp.P.O. Box 137, Silverside Carr Executive Center501 Silverside RoadWilmington, Delaware, USA 19809

tel. +1 302 798 9444fax. +1 302 798 9448

www.mineradio.com