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TECHNICAL DESCRIPTION ULTRAFLOW

54 and 34

5512-385 GB/02.2014/Rev. H1

1 General description

ULTRAFLOW

is a static flow sensor based on the ultrasonic principle. It is primarily used as a volume flow sensor

for thermal energy meters such as MULTICAL

. ULTRAFLOW

54 has been designed for use in heating installations

where water is the heat-bearing medium, whereas ULTRAFLOW

34 has been designed for use in cooling and

heat/cooling installations where water is the heat-bearing medium.

ULTRAFLOW

employs ultrasonic measuring techniques and microprocessor technology. All calculating and

measuring circuits are collected on one single board, providing a compact and rational design in addition to

exceptionally high measuring accuracy and reliability.

The flow is measured using bidirectional ultrasonic technique based on the transit time method, proven a long-

term stable and accurate measuring principle. Two ultrasonic transducers are used to send the sound signal both

against and with the flow. The ultrasonic signal travelling with the flow reaches the opposite transducer first. The

time difference between the two signals can be converted into flow velocity and thereby also volume.

A three-wire pulse cable is used to connect ULTRAFLOW

to the calculator. The cable supplies the flow sensor and

also transfers the signal from sensor to calculator. A signal corresponding to the flow – or more correctly, a

number of pulses proportional to the water volume flowing through - is transmitted.

Where ULTRAFLOW

is to be used as a flow sensor with built-in supply, e.g. if the distance between MULTICAL

and ULTRAFLOW

is 10 m or more, a Pulse Transmitter can be supplied as an accessory. If ULTRAFLOW

is used as

pulse generator for other equipment, it must be connected through a Pulse Transmitter. If a different meter factor

is required, ULTRAFLOW

is connected through a Pulse Divider. Pulse Transmitter and Pulse Divider have a built-in

supply for ULTRAFLOW

and a galvanically separated pulse output.

Kamstrup ULTRAFLOW 54 User Manual

Other manuals for Kamstrup ULTRAFLOW 54