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Siemens
Ultrasonic heat and cooling energy meters UH50..
CE2N5324en
Building Technologies
2013-01-14
Temperature above heat threshold and temperature differential >+0.2 K
=> thermal energy is acquired
Temperature below "cold threshold" and temperature differential <-0.2 K
=> cooling energy is acquired
Tariff control via time switch (tariff T10)
For tariff control, one switch-off time and one switch-on time per day can be
defined. At the switch-on time, the summation of energy or volume is started in
tariff register 1. At the switch-off time, it is ended.
Tariff control via M-bus (tariff T11)
In tariff registers 1, 2 and 3, either energy or volume can be summated. With the
relevant M-bus command, one of the 3 tariffs can be activated or all tariffs can be
deactivated.
Surcharge quantity tariff by means of return temperature (tariff T12)
The energy is summated depending on the return temperature in tariff registers 1
or 2.
The summated energy is calculated from the temperature differential of return and
defined return threshold (and not from the temperature differential).
Above return threshold: T1 is summated.
Below return threshold: T2 is summated.
Display of tariff situation on the LCD
The current tariff state is shown in the user loop together with the energy or the
volume.
No tariff state is shown for tariffs T7 and T8.
For tariffs T2, T3, T4, T5, T6, T10, T11, and T12:
No tariff register active
Tariff register 1 active
Tariff register 2 active
Tariff register 3 active
For tariff T9 (cooling energy/heat meter)
No tariff register active
Tariff register 1 active
Tariff register 2 active
The type of tariff and the associated parameters are displayed in service loop 4.
For T2, T3, T4, T5, and T6
At 2-second intervals with threshold value 1/2/3
For T7
For T8
For T9
At 2-second intervals
For T10
Switching times at 2-second intervals
For T11
For T12
The contents of the tariff registers is displayed in the user loop after the energy.
For tariffs T2, T3, T4, T5, T6, T10, T11, and T12
Tariff register 1