20
Temperature range
°C
0...105 / 0...150
Temperature difference
range
K
3...80 / 3...130
Display
LCD 8-digit + additional character
Ambient temperature
°C
5...55
Storage temperature
°C
-20...+65
Resolution frequency
°C
0.01
Measurement frequency
s
flow rate = 4
temperatures = 4 / 32 (*)
Unit to read the heat
consumtion
Standard MWh; opt. kWh, GJ
Data backup
1 x daily
Due date values
Storage of all monthly values extensive
storage of flow rate values
Maximum value storage
extensive storage of flow rate, thermal
output and other parameters
Interface
Standard
optical interface (ZVEI, IrDA),
3 pulse output optional
optional
3 pulse output, M-Bus, Radio
Supply
3.6 V lithium battery
(different capacities)
Battery lifetime
Years
> 6, opt. >11 (changeable
during the operation time) (**)
Protection class
IP54
EMC
A
Ambient conditions/
climatic influencing
(valid for complete compact
meter)
- climatic
Highest permissible ambient temp. 55 °C
Lowest permissible ambient temp. 5 °C,
Humidity class IP54
- mechanical
class
M1
- electromag-
netic class
E1
(*) optionally
(*) Possibility for battery replacement is country-specific, please check the relevant national
regulations.
Technical data calculator
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Summary of Contents for zelsius C5-IUF
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