ACIN FlowFinder mk2 - Measuring with the Flowfinder Mk2

8 manual 19-11-2013
8. MEASURING WITH THE FLOWFINDER MK2®
The FlowFinder mk2® has two measuring modes. The so-called
‘validaon mode’ and the ‘adjustment mode’. In the opons
menu one of these modes can be set as default. At start up the FF-
mk2 will be ready to measure in the default mode.
The measuring mode can be recognized by the red blinking ‘0’
(adjustment mode) or the ‘- - -‘ (validaon mode).
In validaon mode the FF-mk2 a measurement starts by pushing the red buon (behind the le knob).
The FF-mk2 decides when the measurement is ready, normally within 10 to 15 seconds. It will display the
measurement result which then can be stored by touching ‘store’.
In adjustment mode the FF-mk2 a measurement starts by pushing the red buon. The blinking number
turns green and will change depending on the air ow volume. The measurement will only stop aer the
red buon is pushed again. This way you can adjust the diuser or valve to the desired air ow. You may
take down the FF-mk2 to adjust the valve. Wait long enough unl a more or less stable reading is reached,
also aer placing the FF-mk2 back again. Always stop and start again when going from one measuring
locaon to another. The measuring result can’t be stored.
Switching between modes: push the ‘return’ buon in the right upper corner. Then you can select either
‘validate’ or ‘adjust’. To change the default mode you have to go to the opons menu.
To do a measurement, hold the FlowFinder mk2® by the le and right round handles and place the
instrument over the outlet or inlet you want to measure. Make sure to make a ght connecon by
pushing enough to avoid measuring secondary air.
Press the red buon behind the le knob shortly in order to start the measurement.
In validaon mode the text “compensang pressure” will appear, aer a few seconds followed by ”mea-
suring”. Also an arrow will appear on the boom of the display, indicang the direcon of the ow.
Aer approximately 10 seconds the result of the measurement will appear, expressed in l/s, m³/u of CFM.
In adjustment mode the colour of the blinking number will turn green and change unl it reaches the air
ow amount.
As a consequence of variaons in the venlaon system itself and to lower the total uncertainty,
we advise to repeat the measurement 2 or 3 mes shortly aer each other.
A new measurement can be started by pressing the red buon.
Best is to wait unl the venlator in the FF has come to a rest (at low ows) or runs at its non-zero
pressure compensated speed as dictated by the ow.