Q heat 5
Heat meters by QUNDIS.
QUNDIS heat meters at a glance
The German metering instrument manufacturer QUNDIS produces heat meters with ultrasonic and impeller technology. Both device types are ideal system modules for measuring and recording heat consumption in heating systems with central heat generation. This means that the tried-and-tested heat meters in our Q heat series enable you to record the energy consumption of various heating, cooling, solar and hot water systems.
The Q heat series heat meters are particularly practical due to their compact design and simple operation. In its class our ultrasonic heat meter Q heat 5 US is the flattest unit on the market and, thanks to the removable calculating unit, can also be easily installed in particularly inaccessible places.
The current consumption, readout date and the readout date value can be conveniently recorded by the push of a button via a display loop.
Benefits
For a wide range of flow rates
This makes our Q heat series heat meters extremely versatile.
Radio or M-Bus system
Modern interfaces to our radio or M-Bus systems facilitate the recording of consumption data for the metering service. The meter is parameterised via laptop using the IrDA interface. Installation instructions can be found here.
Meters heat & cold
Q heats can be used variably. The devices measure the energy consumption of heat and cooling systems.
Metering from 4 seconds
Our ultrasonic instruments deliver recorded values with a fast metering cycle of 4 seconds. The Q heat 5 basic impeller meters record in this mode every 6 seconds.
Very simple seal assembly
Thanks to the Selflock seal, your fitters no longer have to install their own seal. In addition, a serial number is already printed on the seal. This makes the work much easier.
A wide range of varian
Suitable for heating, cooling, solar and hot water systems, and available as both screw-type or metering capsule variants.
Suitable for glycol mixtures
The Q heat series heat meters can also be used to record the consumption of solar heating systems.
Sales hotline
+49 361 26 280-0
We are there for you
Mo – Fr from
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Radio integrated heat meter
Q heat 5. 5 R
Radio-integrated for even more convenience.
The new, Q heat 5.5 R compact heat meter with integrated radio technology stands out in terms of its flexibility for future-proof use in apartment buildings as well as commercial premises.
Screw-type and metering capsule meters are available in various design and connection sizes for recording the energy consumption of heating, solar and hot water treatment systems. All device variants are equipped as standard with a removable calculating unit. The compact design – without an extra add-on module – means that space-saving installation is no problem. Thanks to the integrated radio transmission and automatic radio start, operational start-up and integration into a Q walk-by or Q AMR radio system is quick and easy. The static recording cycle of every 36 seconds (10-year battery) results in a high level of metering accuracy (optional every 8 seconds with 7-year battery).
In order to be able to react flexibly to the most varied requirements and installation situations, the Q heat 5.5 R can be switched between flow and return on site without having to change the temperature sensors. In addition, it is also possible to change the energy unit (GJ – MJ <-> kWh – MWh).
On request, all heat meter variants can be optionally ordered with AES encryption. If required, decryption is possible within the Q SMP on a tariff-related basis.
| Heat meter variants | Nominal flow rates |
| Screw-type 80 mm | qp 1,5 m³/h |
| Screw-type 110 mm | qp 0,6 m³/h and 1,5 m³/h |
| Screw-type 130 mm | qp 2,5 m³/h |
| Measuring capsule Ista IST (G 2″) | qp 0,6 m³/h, 1,5 m³/h and 2,5 m³/h |
| Measuring capsule Allmess A1 (M77 x 1,5) | qp 1,5 m³/h |
| Measuring capsule TE1 (M62 x 2) | qp 1,5 m³/h and 2,5 m³/h |
Radio integrated ultrasonic heat meter Q heat 5.5 US R
Metering accuracy meets future-proof features.
Ultrasonic metering technology stands for precision, long-term stable readings and easy handling during installation. If this is combined with integrated radio technology, it becomes a highly convenient package in the field of consumption data acquisition. The short, static metering cycle of every 12 seconds with the 10-year battery (optional every 4 seconds with the 7-year battery), the dynamic range of up to 1:250 as well as the Class 2 metering accuracy all result in a very high level of reading precision.
Screw-type meters are available in flow rates of 0.6 to 10.0 m3/h for recording the energy consumption of heating, cooling and hot water supply systems.
The compact design, removable calculating unit and the possibility of overhead mounting offer plenty of scope and options for installation, even in confined situations. In addition, if required it is possible on site to switch between supply and return – without changing the temperature sensors – as well as between energy units (GJ – MJ <-> kWh -MWh).
AES device encryption is possible on request. Decryption can be performed within the Q SMP on a tariff-related basis. Optionally, devices with pure AMR or AMR extended telegrams are available.
| Heat meter variant | Nominal flow rates |
| Screw-type 110 mm | qp 0,6 m³/h |
| Screw-type 110 mm | qp 1,5 m³/h |
| Screw-type 130 mm | qp 1,5 m³/h |
| Screw-type 130 mm | qp 2,5 m³/h |
| Screw-type 150 mm | qp 3,5 m³/h NEW |
| Screw-type 150 mm | qp 6,0 m³/h NEW |
| Screw-type 260 mm | qp 3,5 m³/h NEW |
| Screw-type 260 mm | qp 6,0 m³/h NEW |
| Screw-type 200 mm | qp 10,0 m³/h NEW |
| Screw-type 300 mm | qp 10,0 m³/h NEW |
NEW Ultrasonic heat meter Q heat 5.5 US M-Bus / Impuls-IN
Metering precision meets reliability.
The Q heat 5.5 US M-Bus / Impuls-IN heat meter is the solution for precise and reliable ultrasonic metering technology. With its integrated M-Bus interface and two impulse inputs, the ultrasonic heat meter has a dynamic range of up to 1:250 and accurately measures even the smallest flow rates. Thanks to its low overall height and a removable calculator unit, it offers maximum flexibility in all installation situations – even overhead mounting is possible without any difficulty.
The integrated M-Bus interface and two impulse inputs enable simple system connection and reduce both installation time and costs. Perfect for tight mounting situations and versatile in use, the Q heat 5.5 US M-Bus / Impuls-IN ensures maximum precision and efficiency in your M-Bus network.
| Heat meter variant | Nominal flow rates |
| Screw-type 110 mm | qp 0,6 m³/h |
| Screw-type 110 mm | qp 1,5 m³/h |
| Screw-type 130 mm | qp 1,5 m³/h |
| Screw-type 130 mm | qp 2,5 m³/h |
| Screw-type 150 mm | qp 3,5 m³/h |
| Screw-type 150 mm | qp 6,0 m³/h |
| Screw-type 260 mm | qp 3,5 m³/h |
| Screw-type 260 mm | qp 6,0 m³/h |
| Screw-type 200 mm | qp 10,0 m³/h |
| Screw-type 300 mm | qp 10,0 m³/h |
ready
to order
Product Flyer
(PDF file)
Price sheet
(PDF file)
Data sheet
(PDF file – available soon)
Tender text (available soon)
Electronic heat meter Q heat 5 / Q heat 5.5
Compact and versatile.
The Q heat 5 / Q heat 5.5 electronic heat meter is fitted with an IrDA interface as standard. It is available as a screw-type version and a measuring capsule version for the connection interfaces IST (G2″ – Ista), A1 (M77 x 1,5 – Allmess) and TE1 (M62 x 2 – Techem). If data transmission is to be implemented by radio (Q AMR, Q walk-by) or by cable (Q M-Bus), the device can simply be retrofitted with an add-on module.
For special applications such as water heating we have equipped Q heat 5 / Q heat 5.5 with a fast measuring cycle. All volume meters are available in the established flow dimensions of 0.6 / 1.5 and 2.5 m3/h.
The optimized display loop: After pressing any key in sleep mode the display of the Q heat 5 heat meter now shows the current reading, the scheduled readout day and the scheduled readout value in a loop. This loop is repeated 10 times. In order to simplify readout operations, a display test separates the display of the current value from the scheduled readout value. Readouts by tenants or untrained personnel have now become much simpler.
| Heat meter variants | Nominal flow rates |
| Screw-type 80 mm | qp 1,5 m³/h |
| Screw-type 110 mm | qp 0,6 m³/h and 1,5 m³/h |
| Screw-type 130 mm | qp 2,5 m³/h |
| Measuring capsule Ista IST (G 2″) | qp 0,6 m³/h, 1,5 m³/h and 2,5 m³/h |
| Measuring capsule Allmess A1 (M77 x 1,5) | qp 1,5 m³/h |
| Measuring capsule TE1 (M62 x 2) | qp 1,5 m³/h and 2,5 m³/h |
Product Flyer Q heat 5
(PDF file)
Product Flyer Q heat 5 AMS (for Allmess EAT)
(PDF file)
Data sheet
(PDF file)
Heat meter Q heat 5 M-Bus / Impulse-IN
Perfect integration into M-Bus networks.
QUNDIS offers two new versions of its tried-and-tested Q heat 5 screw-type heat meter. The Q heat 5 M-Bus / Impulse-IN has integrated M-Bus and Impulse-IN communications interfaces. This enables up to 2 water meters to be integrated into an existing M-Bus network via a standard load. Thanks to the unique operating concept, parameterising the heat meters is child’s play. This significantly reduces the installation work and the cost of integration into an M-Bus network. The Q heat 5 M-Bus does without the Impuls-IN interface.
Because of their compact design and removable calculator unit, the heat meters are ideal for installation situations where space is limited. In its class, at only 63.6 mm the Q heat 5 M-Bus / Impulse-IN heat meter features the smallest installation height on the market.
Product Flyer
(PDF file)
Data sheet
(PDF file)
Ultrasonic heat meter Q heat 5.5 US
Robust and highly precise.
The ultrasonic heat meter Q heat 5.5 US operates on the basis of state-of-the-art ultrasonic technology. It shows its strengths wherever especially precise and reliable long-term metering is essential. The very robust volume measuring part made of brass and other high-quality materials also prevent deposits and wear.
The compact height as well as the removable calculator enables installation even where space is extremely limited and a freely selectable installation position.
Thanks to integrated commuication the Q heat 5.5 US can be integrated in the QUNDIS readout systems (Q walk-by, Q AMR*, Q M-BUS). There is also a version with pulse-out interface available.
All volume meters are available in the established flow dimensions of 0.6 m3/h, 1.5 m3/h and 2.5 m3/h.
* Q AMR – only readout by Q gateway 5.5 direct
Product Flyer
(PDF file)
Data sheet
(PDF file)
Ultrasonic heat meter Q heat 5.5 US comp.
Ultralight and highly precise.
The ultrasonic heat meter Q heat 5.5 US comp. operates on the basis of state-of-the-art ultrasonic technology. It shows its strengths wherever especially precise and reliable long-term metering is essential.
The robust glass-fibre reinforced measurement unit perfectly combines resistance and low weight. The compact height as well as the removable calculator enables installation even where space is extremely limited and a freely selectable installation position.
Thanks to integrated commuication the Q heat 5.5 US can be integrated in the QUNDIS readout systems (Q walk-by, Q AMR*, Q M-BUS). There is also a version with pulse-out interface available.
All volume meters are available in the established flow dimensions of 0.6 m3/h, 1.5 m3/h and 2.5 m3/h.
* Q AMR – only readout by Q gateway 5.5 direct
Product Flyer
(PDF file)
Data sheet
(PDF file)
Split heat meter Q heat split
For large volumes and high temperatures.
Our Q heat split heat meters consist of an electronic calculating unit, a volume meter and temperature sensors. They are unbeatable for large volume flows and high temperature loads.
Depending on the volume which is pumped, the measuring unit takes the form of a Woltman sensor or ultrasonic version. Connection with the pipe system is by means of a threaded or flanged connector. Saving and displaying values is the task of the calculating unit.
Other modern variants feature combined heat and cold metering (G13/14) or with adaptation for water/glycole mixtures for solar installations (G18/19). There are also device version available with an internal M-Bus module, retrofittable communication mounts or impulse out for integration into a remote meter reading system.
Product Flyer
(PDF file)
Data sheet ultrasonic volume meter
(PDF file)
Data sheet calculator unit / temperature sensors (in revision)
(PDF file)
What is a heat meter?
A heat meter measures the energy consumed in the supply of a certain amount of heat or cooling. The device is mounted directly in the pipe network.
The process behind it is quite simple: Water is heated in a heating system. When a radiator is turned on, this water flows from the heating unit to the consumer through the heating circuit at a certain flow temperature. Each active radiator emits the heat of the heated water to the surrounding room. The water cools down and continues to flow behind the radiator in the return pipe. The temperature difference between flow and return is measured by the heat meter. The unit calculates the energy consumption from the temperature difference and the amount of water that has passed through.
FAQ
With every electronic heat meter you can have the current and the annual consumption displayed. To access the menu you press the upper key twice and the lower key once. Level LO shows you current consumption, level L1 the annual consumption. With the upper key you can switch from level to level and with the lower key you can move from field to field within an individual level. To return to the menu from within a level you press both keys at the same time.
We offer various types of electronic heat meters. The data sheets on our website will explain to you what appears in the display of your heat meter.
