ZENNER zelsius C5 IUF - Manual (Page 2)

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Technical data flow sensor IUF
Nominal flow qp m³/h 0,6 1,5 2,5
Maximum flow qs m³/h 1,2 3 5
Minimum flow qi l / h 6 / 12 / 24 15 / 30 / 60 25 / 50 / 100
Pressure loss at qp bar <= 0,25 bar
Medium temperature range °C 0°C <= Ɵ q <= 90°C / 0°C <= Ɵ q <= 130°C
Minimum pressure (to avoid cavitation) bar 1 bar at qp and 80°C medium temperature range
Measurement accuracy class 3 / 2
Nominal pressure/peak pressure PS/PN
Body with
threaded connection
16/16
PS/PN Body with flange/DN 16/16 / 25/25
IP-Protection class 68
Installation position in any position
Installation return flow optionally forward flow
Cable length up to calculator m 1,2
Installation place temperature sensorsd M10 x 1
Heat carrier (Medium) Water
Nominal diameter DN 15 15 20
Connecting threads* Nominal flow qp
(m³/h)
L [mm]
Threaded
connection
Flange / ND
0,6 110 G¾B --
0,6 130 G1B --
0,6 190 G1B 20
1,5 110 G¾B --
1,5 130 G1B --
1,5 190 G1B 20
2,5 130 G1B --
2,5 190 G1B 20
* optionally
Installation manual
General information
With zelsius C5 IUF, you have acquired one of
the most up-to-date, modern heat meters cur-
rently available on the market. By this version,
the water volume is determined based on the
transit time method. The measurement accuracy
is based on the measurement requirements of
EN 1434 class 2, optionally class 3. Expressive
symbols in the display and easy menu naviga-
tion make readout simple. Can be operated with
one single button. It is equipped with a long-life
battery made for operation during the initial veri-
fication validity period (5 years) including a re-
serve of at least another year. The meter can be
equipped optionally with a battery lifetime of 11
years.