Technical Data - Ista ultego III perfect Montageanleitung

Error codes and IDs
The heat meter carries out self-diagnostics continuously
and can therefore indicate various installation and device
errors:
Error Error
code
FL nEG Wrong flow direction Check / correct the
DIFF nEG Negative tempera-
ture difference
F0 no measurable flow
F1-F3, F5 Temperature mea-
- F6 surement error
F4 Battery empty
F7 Fault in the internal
memory operation
F8 Tampering detected,
no more measure-
ments are taken
F9 Faults in the elec-
tronics

Technical data

▪
Measuring accuracy: Class 2 or 3 according to EN 1434
▪
Ambient class: A (according to EN 1434) for indoor in-
stallation
▪
Mechanical class: M1 acc. to 2004/22/EG (Measure-
ment Instruments Directive)
▪
Electromagnetic class: E1 acc. to 2004/22/EG (Mea-
surement Instruments Directive)
Technical data of the calculator
▪
Storage temperature: -20 °C to 60 °C
▪
Max. altitude: 2000 m above sea level
▪
Ambient temperature: +5 °C - +55 °C
▪
Ambient humidity: < 93 % RH at (25 °C, non-condens-
ing)
▪
Protection class: IP54 according to EN 60529
34/108
Action
flow or installation
direction
Check / replace the
place in which the
sensors are installed
Air in measuring sec-
tion/pipe, vent the
pipe (as-delivered
condition)
Replace the meter
Replace the meter
Notify service depart-
ment
Replace the meter
Notify service depart-
ment
G.83.0098 - Release 8.1.0 CH 2014
ista International GmbH - Grugaplatz 2 - 45131 Essen
▪
Safety class: Mains 110 / 230 V AC: II according to EN
61558, Mains 24 V ACDC: III according to EN 61558
▪
Response threshold for
▪
Temperature difference: 3 K up to 120 K
▪
Temperature measuring range: 2 °C ... 180 °C
▪
Power supply: Optional: Power module 24 V ACDC,
Power module 110 V AC / 230 V AC, Battery, type de-
pends on requirements in line with the following table:
Requirements
(with measuring grid Q =
4 s and
measuring grid T = 30 s)
Standard pulses, M-Bus
reading (max. every 15
minutes)
Fast pulses, M-Bus fast
reading
▪
Interfaces: Optical interface (standard), M-Bus (optional
via module), Pulse output (optional via module), Ana-
logue output (optional via module)
Technical data of the flow sensor
▪
Installation site: flow or backflow
▪
Installation position: arbitrary
▪
Steadying distance: none
▪
Metrological class: 1:100
▪
Temperature range: 5 °C - 130 °C ( nat. approvals may
differ from this)
recommended for heat applications: 10 °C to 130 °C,
recommended for cold applications: 5 °C to 50 °C
▪
Maximum temperature: 150 °C for 2000 h
▪
Maximum overload: 2,8 x q
▪
Nominal pressure: PN 16, optional PN 25
Technical Data Temperature Sensor
▪
Type: PT500 according to EN 60751
▪
Temperature range: Up to 45 mm overall length: 0 °C -
150 °C, From 100 mm overall length: 0 °C - 180 °C
http://www.ista.com

t: 0.2 K
6 years 11 years 16 years
2 x AA C-cell D-cell
D-cell - -
p