Power Supply Requirements; Dynamical Calculation Of Battery Life; Communication; Electronic Unit Interfaces - Landis+Gyr ULTRAHEAT T450 Technical Description

Communication

Power supply requirements

Dynamical calculation of battery life

9 Communication

Electronic unit interfaces

Standard meter *
Radio module 868 MHz
(mobile radio 30 sec. trans-
mission interval)
* The battery life of a standard meter was calculated basing on the following assumptions:
•
Observance of the given restrictions in terms of environmental conditions
•
Temperature of the calculator annually averages 35 °C
•
Heating period ½ year
•
Measuring interval of the flow rate every 2 sec.
•
Adaptively measurement of temperature within an interval of 4-32 sec.
•
LCD power saving mode
•
2 pulse inputs with 50 % Duty Cycle max. 2 Hz
•
1 monthly readout via the optical interface
•
Radio transmission interval of 15 min., T1, telegram F000, encrypted (mode 7)
Note: Note that after the replacement of the battery a parametri-
zation of the number of batteries via UltaAssist is required in or-
der to ensure a faultless calculation of the battery life.
Hinweis: Alternatively, the date (month, year) of the battery
change can be transmitted via M-Bus and radio.
The dynamic battery life calculation estimates the expected remaining battery
life.
The calculation is based on the consumption and parametrization of the meter.
In case that the parametrization is changed the adjustment automatically af-
fects the prospective battery life. If the meter detects a higher or lower energy
consumption than previously estimated, it autonomously increases or reduces
the value of battery life displayed. The value of battery life is indicated by a
battery icon on the LCD additionally provided with a date (month, year).
The calculator is equipped with an optical interface in accordance with EN
62056-21:2002 as standard.
You can also use one of the following communication modules for remote
reading:
•
Pulse module
•
M-Bus-module
•
Radio module
These modules do not have an effect on the measurement. You can retrofit
the modules at any time without damaging the security seal.
Note: You will find the technical details and data on communica-
tion modules in their respective documentation.
6 11
years years
1xAA 2xAA
2xAA 3xAA
20/36
16 20
years years
3xAA 4xAA
4xAA -