FläktGroup eQ PRIME 005, Пусконаладка

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44 FläktGroup DC_9355GB 20180119_R0 We reserve the right to make changes without prior notice
Air handling unit
Control unit
To set the equivalent measuring range in the control
unit , go to:
MAIN INDEX
Ú
UNIT
Ú
OVERVIEW IO CONFIG/RAWVALUES
Ú
PRESSURES/FLOWS
and set the same measuring range as in the sensor for
supply air pressure and extract air pressure, respectively.
Flow sensor
The flow sensors
are installed, connected and con-
figured at the factory. For this reason, they normally do
not need to be set on site. However, it is still necessary
to mention zero point calibration, flow calculation and
temperature correction.
Zero point-calibration
Zero point-calibration can be performed, if neces-
sary, by means of a push button placed underneath the
sensor cover. Zero point calibration must be performed on
sensors subjected to high overpressure.
Flow calculation
The control unit calculates the flow according to the
following formula:
q =
In which q is the flow and ∆ p is the differential pressure
from the sensor.
The k factor is shown on the air handling unit data plate
and in the control unit's menu.
MAIN INDEX
Ú UNIT Ú
OVERVIEW IO CONFIG/RAWVALUES Ú
PRESSURES/FLOWS
IO conf press/flows
HW IO:
Pos: Fact:
Supply air pressure
X7
Type:
Exhaust air press
X8
Type:
Modbus
Fact:
500Pa
0-10V
500Pa
0-10V
-----------------------------------------------------------
Scale:
1
k
√
∆
p m
3
/s
IO conf press/flows
Modbus
Fact:
Supply Flow Pressure
22.23
0Pa
0Pa
Present value
Return Flow Pressure
22.23
Present value
-----------------------------------------------------------
Temperature correction
The flow scale on the display instrument and flow formula
above apply to air at a temperature of +20 °C.
At other air temperatures the flow must be corrected using
the formula:
q = q
20
√
m
3
/s
(273+t)
293
q = the actual flow through the fan,
q
20
= the flow reading
t = current temperature in °C
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