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Brand: Kamstrup
Kamstrup ULTRAFLOW 54 DN15-125 Ultrasonic Flow Sensor
Description
A wear-free ultrasonic flow sensor for heat and cooling meters
The Kamstrup ULTRAFLOW 54 DN15-125 is a static flow sensor based on bidirectional ultrasonic transit-time measurement, covering qp 0.6 to 100 m³/h. It has no moving parts, so there is nothing to wear, and all measurement and calculation circuits sit on a single board in a compact housing. In threaded sizes up to qp 10 m³/h the sensor body is prepared for a directly mounted temperature sensor (M10x1 connection), which shortens installation in small plant rooms. The sensor is approved as a heat meter sub-assembly under MID 2014/32/EU and is paired with a separate calculator, such as the Kamstrup MULTICAL 603 or MULTICAL 803.
Technical specifications
| Parameter | Specification |
|---|---|
| Nominal flow qp | 0.6 to 100 m³/h (11 sizes) |
| Dynamic range / qs | 100:1 (qp:qi); qs:qp 2:1 |
| Approvals | MID 2014/32/EU EU-type examination DK-0200-MI004-008 and DK-0200-MI004-033; Module D DK-0200-MID-D-001; EN 1434 |
| Accuracy class | Class 2 and 3; typical Ef = ±(1 + 0.01 qp/q) % |
| Environment | MID M1 and M2, E1 and E2; EN 1434 class C; 5 to 55 °C indoors |
| Medium temperature | 15 to 130 °C or narrower; flanged meters recommended above 90 °C |
| Pressure stage | PN16 or PN25 (see marking) |
| Supply | 3.6 VDC from MULTICAL or Pulse Transmitter; MULTICAL battery up to 16 years |
| Pulse output | Push-pull, 10 kohm, 2 to 6 ms pulse duration; saturation at 125 Hz |
| Cable length | Up to 10 m (sensor cable 2.5, 5 or 10 m); up to 100 m with Pulse Transmitter, 30 m with Cable Extender Box |
| Protection | Flow sensor IP65; Pulse Transmitter/Divider IP67 |
| Straight inlet / orientation | 0D per EN 1434; horizontal, vertical or at an angle |
| Housing materials | Threaded: DZR brass; flanged: stainless steel 1.4308; transducer 1.4404; EPDM O-ring; PESU measuring tube |
| Connections | Thread EN ISO 228-1; flanges EN 1092-1 type B raised face, PN25 |
Sizes and installation dimensions
The type summary in the datasheet lists the following combinations. Dimensions in brackets in the manufacturer table are country-specific variants and are not shown here; contact us for those.
| qp (m³/h) | Meter factor (p/l) | Installation dimensions (mm) | Min. cut-off (l/h) |
|---|---|---|---|
| 0.6 | 300 | G¾B x 110 / G1B x 130 / G1B x 190 | 2 |
| 1.5 | 100 | G¾B x 110 / G¾B x 165 / G1B x 130 / G1B x 190 / DN20 x 190 | 3 |
| 2.5 | 60 | G1B x 190 / DN20 x 190 / G1B x 130 | 5 |
| 3.5 | 50 | G5/4B x 260 / DN25 x 260 | 7 |
| 6 | 25 | G5/4B x 260 / G1½B x 260 / DN25 x 260 / DN32 x 260 | 12 |
| 10 | 15 | G2B x 300 / DN40 x 300 | 20 |
| 15 | 10 | DN50 x 270 | 30 |
| 25 | 6 | DN65 x 300 | 50 |
| 40 | 5 | DN80 x 300 | 80 |
| 60 | 2.5 | DN100 x 360 | 120 |
| 100 | 1.5 | DN100 x 360 / DN125 x 350 | 200 |
Installation and selection notes
If the sensor feeds equipment other than a MULTICAL calculator, it must be connected through a Pulse Transmitter, and a Pulse Divider is used when the other calculator has a different meter factor. At medium temperatures above 90 °C or below ambient, the calculator and Pulse Transmitter must be wall mounted rather than mounted on the flow sensor. Larger sensors, qp 150 to 1000 m³/h, are covered by the ULTRAFLOW 54 DN150-300 version, and the full range of meters is under Flowmeters.
How the Kamstrup ULTRAFLOW 54 DN15-125 works
The ULTRAFLOW 54 measures flow with ultrasonic transit time. Two transducers send sound pulses with the flow and against it. The pulse that travels with the flow arrives slightly sooner, and the difference in time is proportional to the water velocity. The electronics turn the velocity into volume and send it as pulses to a separate calculator. There are no moving parts in the measuring tube, so nothing wears and the sensor keeps its accuracy over years of heating and cooling duty.
Where the ULTRAFLOW 54 DN15-125 is used
- Heat meters in district heating substations
- Cooling meters in chilled water systems
- Building energy metering and tenant billing
- Plant rooms where space is tight
- Systems paired with a MULTICAL calculator
Selection checklist for the ULTRAFLOW 54 DN15-125
- Nominal flow qp from 0.6 to 100 m3/h
- Connection: threaded or flanged, according to size
- Pressure stage: PN16 or PN25
- Medium temperature from 15 to 130 degrees C, with flanged meters above 90 degrees C
- Cable length of 2.5, 5 or 10 m
- Pulse output and meter factor for the calculator
- Installation dimension matching the existing pipe
- Calculator type, such as MULTICAL 603 or 803
Installation, commissioning and maintenance notes
Fit the sensor in the flow or return pipe as the calculator is set. No straight inlet run is needed under EN 1434, and the sensor can be mounted horizontally, vertically or at an angle. Fill the system and bleed the air before reading, because air bubbles disturb ultrasonic measurement. Fit the temperature sensor in the pocket provided, seal the installation, and check the pulse count against the calculator.
Requesting a quotation for the Kamstrup ULTRAFLOW 54 DN15-125
Please send the nominal flow, the pipe size, the pressure stage and the calculator type needed. Seven Star LLC serves industrial customers in Oman and the GCC and replies with a quotation based on the information provided.
ULTRAFLOW 54 DN15-125 approvals
The sensor is approved as a heat meter sub-assembly under MID 2014/32/EU and follows EN 1434, with accuracy class 2 and class 3 options.
ULTRAFLOW 54 DN15-125 materials
Threaded meters use DZR brass and flanged meters use stainless steel, with an EPDM O-ring and a PESU measuring tube.
ULTRAFLOW 54 DN15-125 power and protection
The sensor runs on 3.6 VDC from the calculator, and the flow sensor protection is IP65.
ULTRAFLOW 54 DN15-125 dynamic range
The dynamic range is 100 to 1, so the meter reads accurately from very low flow up to the nominal flow.
Heat meter records for ULTRAFLOW 54 DN15-125
Keep the serial number, the meter factor and the installation date with the site energy file.
Choosing the right ULTRAFLOW 54 DN15-125 size
Choose the nominal flow from the peak load of the circuit, not only from the pipe diameter, so the meter works in its best range.
Documents and quotation
The Kamstrup ULTRAFLOW 54 DN15-125 data sheet is attached. Please send qp, connection and installation length, medium temperature and pressure, cable length, and the calculator it will feed. We will quote after checking the order specification against the manufacturer documentation.
Datasheets & Documents
- Datasheet Kamstrup ULTRAFLOW 54 DN15-125 Data Sheet (FILE100000564_D_EN_05.2024) Download
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About brand
Ultrasonic measurement with no moving parts is the idea behind the flowIQ water meters and ultrasonic energy meters of Kamstrup. The Danish company, founded in 1946 in Skanderborg, makes meters for water, heat and cooling that are read remotely. Seven Star LLC lists the Kamstrup flowIQ water meters and the MULTICAL 403 energy meter, and supplies Kamstrup meters to utilities, district cooling operators and building owners in Oman and the GCC.
Kamstrup meter families on this page
The flowIQ 2200 is an ultrasonic smart water meter for residential, multi-unit and commercial connections. The flowIQ 4200 is the bulk water meter, made in five sizes from DN125 to DN300. The MULTICAL 403 is an ultrasonic thermal energy meter that can be supplied as a heat meter, a cooling meter or a combined heat and cooling meter, with a matched pair of temperature sensors and communication modules.
Ordering Kamstrup meters: what we need
Send the type number from the meter front if you are matching installed units. Otherwise give nominal flow and pipe size, connection type and meter length, heat or cooling service, where the flow sensor sits (supply or return pipe), the temperature sensor type and cable length, and the communication you need, for example wired M-Bus or a radio option.
Browse Kamstrup products by category: Flowmeters.
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Frequently Asked Questions
What is the ULTRAFLOW 54 used for?
It is a static ultrasonic flow sensor used primarily as a sub-assembly of a thermal energy meter, together with a separate MULTICAL 603 or MULTICAL 803 calculator and a set of TemperatureSensor 63, in installations where water carries the heat.
How is it connected to the calculator?
With a three-wire pulse cable that both supplies the sensor and returns volume-proportional pulses. The cable can be ordered in 2.5, 5 or 10 m lengths, and a Pulse Transmitter or Cable Extender Box is used for longer distances.
Which sizes are covered?
Nominal flow qp 0.6, 1.5, 2.5, 3.5, 6, 10, 15, 25, 40, 60 and 100 m3/h, from G3/4B threaded sensors to DN125 flanged sensors.
Does it need straight pipe runs?
The datasheet gives a straight inlet requirement of 0D according to EN 1434, and the sensor can be installed horizontally, vertically or at an angle.
Is Seven Star LLC a distributor of Kamstrup?
No. Seven Star LLC is an independent industrial supplier in Muscat and is not a distributor or agent of Kamstrup. We check the type number against Kamstrup documentation before quoting.
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