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G.83.0098 - Release 8.1.0 CH 2014
ista International GmbH - Grugaplatz 2 - 45131 Essen
http://www.ista.com
sured by an ultrasonic pulse that is first emitted in the direc-
tion of flow and then against the direction of flow.
Downstream the time the pulse travels between the trans-
mitter and the receiver becomes shorter; upstream it be-
comes correspondingly longer.
The volume of water is then calculated from the values
measured for the pulse travel times. The flow and return
temperatures are sensed using platinum resistors. The vol-
ume of water and the temperature difference between the
flow and return are then multiplied and the product is sum-
mated. The result is that the quantity of thermal energy
consumed is recorded and displayed in the units kWh or
MWh or MJ or GJ.
Behavior of the meter
▪
If the response thresholds are exceeded and the flow-
rate and temperature difference are positive, the quanti-
ty of thermal energy and the volume are Ultraheat /
Ultracold UH50 Operating Instructions UH 306-101h
Page 3 / 3 summated.
▪
In the segment test, all segments of the display are
switched on for test purposes.
▪
On the yearly set day, the meter readings for quantity of
energy and volume, the values for the maxima and the
flowrate and missing times are placed in the previous
year memory.
▪
The flowrate, power, and temperature difference are ac-
quired with the correct sign. If the response threshold is
not reached, the value is preceded by a u. The current
temperatures are shown in separate lines with a resolu-
tion of 0.1°C.
▪
To calculate the maximum, the power and flowrate are
averaged over a measuring period of, for example, 60
min. The maximum values from the average calculation
are preceded by Ma. The maximum temperatures are
preceded by MV resp. MR.
▪
The 8-digit property number (also the secondary ad-
dress in M-bus operation), can be set in parameter set-
ting mode.
▪
The operating time is counted from the first time the
power supply is connected.
▪
Missing times are summated, if an error is pending that
prevents the meter from measuring.
▪
The date is incremented daily.
▪
The type of installed modules is displayed. If an M-but
module is installed, the primary and secondary address
awill be displayed on the following lines.
▪
The number for the firmware version is assigned by the
manufacturer.
Storage / Disposal
▪
Spent batteries have to be disposed of at suitable collec-
tion points!
Transport / reverse logistics
▪
The battery has generally to be removed before return-
ing the meter by air freight.
▪
You may only transport the ultego III perfect in its original
packaging.
Handling
1. Key
1
2. Key
2
3. Service
Key
The meter readings are arranged in several loops and, de-
pending on configuration of the ultego III perfect, may differ
from the default shown here.
Using Key 1, select between the individual user or service
loops. Using Key 2, run stepwise through the respective
loop.
Within the parameterising loop, use Key 1 to select the vari-
able to be changed. Use Key 2 to switch to edit mode. In
edit mode, use Key 2 to change the current place of the val-
ue. Use Key 1 to change to the next place.
User loop
Display
Meaning
Head of the loop
Error message with error code in the
event of a fault
Accumulated energy with tariff status
3
1
2
