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G.83.0098 - Release 8.1.0 CH 2014
ista International GmbH - Grugaplatz 2 - 45131 Essen
http://www.ista.com
Error codes and IDs
The heat meter carries out self-diagnostics continuously
and can therefore indicate various installation and device
errors:
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
▪
Safety class:
Mains 110 / 230 V AC: II according to EN
61558, Mains 24 V ACDC: III according to EN 61558
▪
Response threshold for
t:
0.2 K
▪
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:
▪
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
p
▪
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
Error
code
Error
Action
FL nEG
Wrong flow direction Check / correct the
flow or installation
direction
DIFF nEG Negative tempera-
ture difference
Check / replace the
place in which the
sensors are installed
F0
no measurable flow
Air in measuring sec-
tion/pipe, vent the
pipe (as-delivered
condition)
F1-F3, F5
- F6
Temperature mea-
surement error
Replace the meter
F4
Battery empty
Replace the meter
F7
Fault in the internal
memory operation
Notify service depart-
ment
F8
Tampering detected,
no more measure-
ments are taken
Replace the meter
F9
Faults in the elec-
tronics
Notify service depart-
ment
Requirements
(with measuring grid Q =
4 s and
measuring grid T = 30 s)
6 years 11 years 16 years
Standard pulses, M-Bus
reading (max. every 15
minutes)
2 x AA
C-cell
D-cell
Fast pulses, M-Bus fast
reading
D-cell
-
-