General Description - Kamstrup ULTRAFLOW 54 Technical Description

TECHNICAL DESCRIPTION

1 General description

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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
where water is the heat-bearing medium, whereas ULTRAFLOW
heat/cooling installations where water is the heat-bearing medium.
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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
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.
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Where ULTRAFLOW is to be used as a flow sensor with built-in supply, e.g. if the distance between MULTICAL
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and ULTRAFLOW is 10 m or more, a Pulse Transmitter can be supplied as an accessory. If ULTRAFLOW
pulse generator for other equipment, it must be connected through a Pulse Transmitter. If a different meter factor
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is required, ULTRAFLOW
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supply for ULTRAFLOW and a galvanically separated pulse output.
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. ULTRAFLOW
is connected through a Pulse Divider. Pulse Transmitter and Pulse Divider have a built-in
5512-385 GB/02.2014/Rev. H1
ULTRAFLOW
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54 has been designed for use in heating installations
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34 has been designed for use in cooling and
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to the calculator. The cable supplies the flow sensor and
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54 and 34
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is used as