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Pulsar Process Measurement Ltd design, manufacture and market level, volume, open channel flow, pipe flow and pump control instrumentation. Our company specialises in non-intrusive measurement, and our technology is used in a wide variety of industries and applications worldwide. By concentrating on the development of ultrasonic level measurement, we believe that Pulsar can be fairly described as the world technology leader in this field. The product range has been designed to provide a full range of alternatives, from single point of measurement installations right through to complex multi-point applications with digital communications. The ultrasonic range has been augmented with other products, so for the water industry, interface monitors for tricky sludge level measurement application have been added together with units that can be used to warn of pump failure. In more general level applications, single point measurement devices are available where continuous level measurement is inappropriate.


Mr Alistair MacKinnon
Cardinal Building, Enigma Commercial Centre
Sandy's Road
WR14 1JJ

Pulsar's FlowCERT - The most accurate open channel flow measurement system available anywhere

Pulsar Process Measurement of Malvern announce the launch of FlowCERT, a new non-contacting ultrasonic open channel flow measurement system that uses unique and patented technology to achieve measurement accuracy that was previously impossible, helping companies to achieve the MCERTS standards.

FlowCERT consists of a dedicated control unit, which makes calculations to BS3680 across every regularly used flume and weir type, and offers datalogging and RS485 digital communications. This is coupled with a choice of sensor, either Pulsar's high-frequency dBMACH3 transducer or their patented DUET.

DUET is a new concept in ultrasonic measurement featuring two transducers mounted on a common frame, one higher than the other. Both transducers fire together, but the echoes returning from the flow surface are only processed at the lower unit. By constantly monitoring the phase difference between the two transducers, DUET dynamically compensates for any changes in the speed of sound between the transducers and liquid surface. The speed of sound varies with temperature, and conventional temperature compensation equipment does not react quickly enough to be really effective. Temperature variations provide the major source of process inaccuracy when using ultrasonic equipment, so by completely removing temperature effects, DUET is a significant breakthrough. In tests, against a temperature variation of more than 30ºC, DUET plus FlowCERT achieved linear measurement accuracies of ±0.5mm.

FlowCERT also offers 32-point linearisation and velocity x area flow calculations where no primary measurement device exists, with the addition of Pulsar's Speedy velocity sensor. Speedy is available either as a "wedge" sensor to be fitted to the bottom of a channel or pipe, or as a pipe sensor. In both cases the Doppler effect is used to calculate the liquid flow velocity.

For further information please email Pulsar Process Measurement Ltd

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