Heat Meter
Ultrasonic calorimeter · TUK-15 / 20 / 32 / 40 / 50
The T-Zaehler ultrasonic heat meter measures the energy each flat uses in centrally heated buildings. A microprocessor combines the readings of the flow and temperature sensors using the standard heat formula. With no impeller or other moving parts in the measuring section, accuracy does not degrade over the years.
10 configurations
Models
Five sizes, two communication options: ten ultrasonic heat meters. Pick the size and the reading method, and the quote form opens with that model.
Selected model
TUK-20
DN20 · M-Bus
- Size
- DN20A common size for flat connections.
- Communication
- M-BusAll meters in the building connect to the M-Bus reader over a single line.
All models comply with EN 1434 and MID; IP65, class 2. Ask us for the technical data of sizes other than DN20.
Features
Durable, reliable and easy to manage in the field.
- Flow measurement based on patented wireless digital sensing, protected against wear.
- No moving parts in the measuring section: no wear, no drift in accuracy.
- Low-battery warning.
- Warning when a temperature sensor is removed or short-circuited.
- Smart consumption reduction depending on flow rate.
- Wide temperature range and high-resolution LCD.
- Automatic data validation.
- Straight-pipe design; vibration-resistant and tamper-protected.
- Very low power: up to 10-year battery life depending on use (quiescent current below 7 µA).
- Body tube produced with high-pressure pressing technology.
- Horizontal or vertical installation.
- One-piece compact design for tight spaces.
- Optional wired (M-Bus) or radio remote reading.
- IP65 protection, CE marked and MID approved.
Specifications may vary by model and site configuration.
Technical data
Values for TUK-20 (DN20). Please ask us for the values of other sizes.
| Flow sensor | DN20 |
|---|---|
| Nominal flow (qp) | 2.5 m³/h |
| Minimum flow (qi) | 0.05 m³/h |
| Maximum flow (qs) | 5.0 m³/h |
| Flow resolution | 0.01 m³ (test 0.00001 m³) |
| Heat resolution | 1 kWh (test 0.001 kWh) |
| Pressure rating | 1.6 MPa |
| Pressure loss | 0.025 MPa |
| Calculator and sensors | Value |
|---|---|
| Minimum temperature difference | 1 °C / 3 °C |
| Maximum temperature | 90 °C |
| Temperature display | 0.1 °C |
| Quiescent current | < 7 µA |
| Battery life | 10 years (depending on use) |
| LCD | 8 digits |
| Accuracy | Class 2 |
| Protection | IP65 |
German engineeringDesign and measurement architecture follow European standards.
Made in TürkiyeManufactured in our own facilities, with fast delivery and service.
Energy savingsWhen everyone pays for what they use, the whole building uses less.
Reliable performanceEvery device is tested before shipping, with spare parts for many years.
Let's choose the right devices for your building
Site surveys are free. Just tell us the number of flats and the type of installation.