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The DAF E-ITN 30.4 heat cost allocator device is designed to distribute the heat costs of buildings with a central heating system among the apartment owners according to the consumption. The heat cost allocator devices, mounted on each radiator, record the consumption value of the radiator ve allows the allocation of the heat costs of the apartments according to their consumption values.
The heat cost allocator measures the surface temperature of each radiator with a heat sensor which is in contact with the surface and manipulation protected. And measures with the heat sensor on the front side the room temperature and calculates consumption value based on the difference between these two values.
The real consumption value is calculated by using this measurement value and the thermal and the thermal power coefficient of the radiator and the contact coefficient between the cost allocator and the radiator*.
* Detailed information can be found in the TS EN 834 standard.
- The DAF E-ITN 30.4 heat cost allocator device has dual heat sensors, providing the electronically accurate measurement of the heat consumption, can easily be mounted on any type of radiators thanks to its small dimensions and its appropriate apparatus.
- The latest technology product DAF E-ITN 30.4 heat cost allocators are remote read by high security AES128 encoded data transfer without the need to enter the building and the apartment by a developed integrated radio frequency system.
- You can track your actual and 12 months backwards consumption by the function button on it and control your savings ratio. It has a high temperature resistant, multi functional LCD display for this purpose.
- The DAF E-ITN 30.4 heat cost allocator allows you with its special designed upward directed display to track your consumptions comfortably without need for bending and kneeling.
- It has a battery lifetime of 10+2 years with its integrated battery.
- It has a technology to prevent faulty measurements due to external heat sources and sun rays and records continuously the monthly consumtions regarding 12 months backwards in its memory by daily data backup.
- It has an integrated manipulation warning system and recognized any intervention to the cost allocator and transmits these via the radio frequency module to the reader.
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Technical Specifications |
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Record start |
When the radiator heat sensor reads ≥23˚C and when the difference between the radiator and room temperature is ≤5K |
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Calendar function |
Recorded monthly measurements up to the past 11 months and the measurements of the year before |
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Power supply |
3.6 V Lithium battery |
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Battery lifetime |
10 years + 1 year reserve |
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Display |
5 digit LCD display + 2 special characters |
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Protection against manipulation |
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Minimal environment design-radiator temperature (tmin) |
35˚C |
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Maximal environment design-radiator temperature (tmaks) |
90˚C |
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Protection class |
IP42 |
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Data recorder |
EEPROM microprocessor |
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Function control |
Automatic, able to be activated and controlled externally |
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Monting location |
At 75% of the radiator height and centre of the radiator width (50%) |
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European standard |
DIN EN 834 |
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Reading |
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Material |
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Dimensions |
100x37x33 mm |
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Transmission capacity |
<5 mW |
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Transmitter frequency |
868 MHz |
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Transmission time |
<8 ms |
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Transmission frequency |
30-36 sec. during the first 3 days of each month, 240-246 sec. during the remaing days of the months. |