Electronic heat cost allocator E-ITN 40 with integrated radio transmitter

E-ITN 40 is modern electronic device intended for ratio-based allocation of heat cost in buildings with central heating system. The heat cost allocator E-ITN 40 uses the two-sensor measuring principle. One sensor measures the temperature of the radiator and the second sensor measures the temperature of the room. Using this principle, allocator ensures exact measurement of consumption value only when the radiator really emits heat.

Data reading

Due to integrated radio transmitter, presence of flat-occupant is not required when data are read. No strangers also enter the flat.

Data reading can be made by billing company employee using mobile receiving unit. Data can be also read by central reading system CRS 40 permanently installed in the building if required.

If water meters with radio modules E-RM 30 are also used, data are read simultaneously.

User kontrol

Every user can control current value during actual billing period and archive value for past billing period on LC display. LCD is placed for better accessibility on the top side of the fashionably designed allocator. 


1. serial number of indicator
2. start of billing period
3. consumption of current yearly billing period
4. consumption of last yearly billing period
5. consumption of current monthly billing period
6. consumption of last monthly billing period

Protection against cheating

Heat cost allocator E-ITN 40 is equipped with electronic seal. This seal is able to recognize unauthorized manipulation and record its exact date. Data about unauthorized manipulation is transmit in radio signal.

When thermally influenced, allocator is switched to single-sensor mode. Allocator is switched back to standard two-sensor mode when thermal influence is finished.

Application

E-TIN 40 is intended to be installed in one-tube horizontal/vertical and two-tube heating systems with the lowest mean design heating medium temperature ≥ 35 °C and highest mean design heating medium temperature ≤ 105 °C.

Technical data

Compared to allocator E-ITN 30 infrared interface is missing, but NFC is added. Unit NFC fully replaces curring programming unit and IRU unit.

Application	tmin ≥ 35 °C (min. temperature of the heating medium) tmax ≤ 105 °C (max. temperature of the heating medium)
Conditions for registration	sensor temperature of the radiator ≥ 23 °C temperature difference between the mean heating medium temperature and the reference air temperature <= 5K (according to standard EN 834:2013), different conditions for registration in the summer period
Power supply	lithium battery 3,0 V
Calculated battery lifetime	10 years + 2 years reserve
Display	5 digits LCD + 2 special symbols
Protection against cheating	continuous control, if thermal influence is detected, allocator is switched to single-sensor mode mechanical seal with billing company label electronic seal – records manipulation date when uninstalled mechanical seal is in external sensor and connector of external sensor
Data backup	daily backup of measured values including real time
Function control	automatic, can be activated and controlled by user
Electronic seal	yes
NFC interface	yes
Infrafed interface	no
IP protection	IP 42
Conformity	ČSN EN 834

Calendar functions

Consumption	- total consumption (from beginning of operation or reset) - consumption for billing period (current yearly + 6 previous) - consumption for previous monthly billing period (current + 24 previous) - date of beginning of measuring total consumption (DD:MM:YY). - date of beginning of billing period (DD:MM) - date of beginning of heating season (DD:MM) - date of beginning of summer season (DD:MM)
Temperature of radiator	- max. temperature of sensor of radiator for past billing period (current yearly + past yearly) - max. temperature for sensor of radiator for past monthly billing period (current monthly + 12 previous) - min. temperature of sensor of radiator for past yearly billing period (current yearly + past yearly) - min. temperature of sensor of radiator for monthly billing period (current monthly + 12 previous) - average temperature of sensor of radiator for past monthly billing period (current monthly + 12 previous) - date of record of highest temperature of sensor of radiator for past yearly billing period - date of record of lowest temperature of sensor of radiator for past yearly billing period - average temperature of sensor of radiator for previous day - current temperature of sensor of radiator
Environment temperatures	- average temperature of environment for yearly billing period (current yearly + past yearly) (just 1. 11. to 31. 3.) - average temperature of environment for past monthly billing period (current monthly + 12 previous) - current average temperature of environment Ti(ss) for yearly billing period (current yearly + past yearly) (only 1. 10. to 30. 4.) - average temperature of environment Ti(ss) for monthly billing period (current monthly + 12 previous) - number of dates with change of temperature Ti(ss) (current monthly + 12 previous). Day of activation is registered when allocator during day at least 1x updates value sTi(ss). - average temperature of environment Ti (ss) for previous day - average temperature of environment for previous day - current temperature of environment
Other features	- number of days of allocator operation for monthly billing period (current monthly + 12 previous). Day of operation is registered if allocator during days at least 1x registers increase of consumption - state of electronic seal of allocator and external sensor - date of broken electronic seal (DD:MM) - total consumption at the moment of broken electronic seal - error state (E0000) - date of error state - total consumption at the moment of error state - number of changing to single sensor mode (current yearly + 1 previous) - number of changing to single sensor mode (current monthly + 1 previous) - option to turn off measuring in summer season - adjustable start temperature of radiator in summer season that allocator starts to measure - option to turn off one way transmission in summer period - power of radiator (default 1000) - Kc coefficient (default 1)
Data coding	yes