emmeti DN15 Manual De Instalacion Y Uso página 11

Technical features
Maximum error admitted between Q1 and Q2
(excluded)
Maximum error admitted between Q2 (included)
and Q4
Temperature class
Sensitivity class to the nominal conditions
Start-up flow rate
Pressure drop class (ΔP to Q3)
Operating pressure (PN)
Maximum reading
Minimum reading
Turbine n. turns/litre
Impulse emitter
Installation
Close the intercept valves placed upstream and downstream from the established installation point,
unscrew the pipe nuts (installation template) and remove together with the gaskets present.
Clean the surface, insert the new supplied gaskets and position the counter correctly, respecting the
flow direction.
Tighten the nuts.
Connection to the M-Bus network
The versions with output impulse-launch allow the centralising of the nuts by means of an M-Bus
network.
It is not possible, however to directly connect the counters to the M-Bus network; thus, an interface
that converts the pulse signal to a M-Bus signal is necessary.
GB IT
+/-5%
+/-2% with T water ≤ 30 °C
+/-3% with T water > 30 °C
T50 and T30/90
U0-D0 (upstream and/or downstream
long straight duct of the instrument is not
necessary)
l/h 4,5 (DN15), 8 (DN20)
63 (DN15 e DN20)
kPa
bar 16
m 100000
3
l 0,05
37,5 (DN15), 21 (DN20)
l/imp 10/1
11