E-ITN 20 is modern electronic device intended for ratio-based allocation of heat cost in buildings with central heating system.
The heat cost allocator E-ITN 20 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 (i.e. it does not measure in the summer).
Measured data can be read via mobile reading unit IRU 10. Reading procedure is very simply and can be made e.g. by building administrator.
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.
- current value in actual billing period
- archive value for past billing period
- control alphanumerical code
- first part of allocator serial number
- second part of allocator serial number
Protection against cheating
Heat cost allocator E-ITN 20 is equipped with electronic seal. This seal is able to recognize unauthorized manipulation and log its exact date.These data about unauthorized manipulation are transmit when read.
When thermally influenced, allocator is switched to single-sensor mode. Allocator is switched back to standard two-sensor mode when thermal influence is finished. Consumption values and radiator temperatures for past 12 months can be read from the allocator memory via infra-red interface.
E-TIN 20 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 ≤ 90 °C.
||two-sensor measuring principle
|Conditions for measuring
||temperature of the sensor of the radiator temperature ≥ 23 °C
difference of surroundings temperature and mean temperature of heating medium ≥ 4 °C
|Resulting rating factor K
||K = 1
||value for past year, for past 12 months: month consumption value, min., aver. and max. radiator temperature, number of heating days
||5-dial LC display + 2 special symbols
||visually, radio and infra-red interface
|Protection against cheating
||continuous control of surroundings temperature, if the thermal influence is detected, allocator is switched to single-sensor mode
electronic seal log manipulation date when uninstalled
||daily backup of measured values including real time
||automatic, can be activated and controlled by user
||100 x 37 x 33 mm
||lithium battery 3,0 V
||ABS + PC / Al - F22