The ACIN FlowFinder-Mk2 is designed for accurate air volume flow measurements used to balance and commission mechanical ventilation systems. The measuring principle of the FlowFinder is based on the zero pressure compensation method where the resistance of the measuring instrument is compensated for by means of a controlled fan. With a typical battery life 12 hours this instrument is the ideal tool for the busy engineer who is taking measurements throughout the day.
Typical applications include air conditioning systems with low terminal resistance and low flow terminals such as those in domestic ventilation systems (UK Types 1, 3 and 4 )
Method of operation
The ACIN FlowFinder-Mk2 has a full color touch screen with an easy interface to set up your measurement and storage options. Taking measurements with the automated FlowFinder is very simple: place the instrument over a supply or exhaust terminal, push the button and wait 10 seconds. No zero-calibration is needed and the instrument automatically detects the flow direction. The unit adjusts its fan speed until a stable zero pressure drop over the instrument is reached so that the instrument has zero resistance and therefore doesn’t disturb the ventilation system. The result of the measurement appears on the touch screen in pre-selectable units l/s, m3 / h or CFM together with the air temperature in °C or °F and the relative humidity (0 to100 %) of the air.
The FlowFinder-Mk2 operation is based on a proven control algorithm ensuring excellent repeatability and stability. The measuring range is 10 to 550 m³ / h with zero pressure compensation and up to 850 m³/h with calculated pressure compensation.
The Instrument Solutions rental models comprise of the following components: ACIN FlowFinder Mk2 complete with 230 x 230 mm standard hood, 415 x 415 mm transparent hood, 400 x 400 mm fabric hood with x4 hood support rods, battery, battery charger, micro SD card, SD card adapter, manual, transit case and calibration certificates.
Air flow range (supply and exhaust) 10 to 550 m³ / h with zero pressure compensation and 551 to 850m³ / h with calculated compensation
Air temperature range - 10 to + 50 °C
Relative humidity range 0 to 100 %
Air flow units CFM, l / s, m3 / h
Temperature units °C or F
Manufacturer's claimed uncertainty air flow (at 20 °C) 3 % of the reading, with a minimum of 3 m³ / h
Manufacturers claimed uncertainty temperature and humidity 0.3 K and 3 % rh at 23 °C
Repeatability air flow measurement Better than 1%, with a minimum of 3 m³ / h
Resolution air flow measurement 1 m³ / h, 0.1 l / s, 0.1 CFM
Battery capacity Typically 12 hours while measuring at around 75 m³ / h
Battery type NiMh
Weight 2230 g battery pack included
Dimensions 260 mm x 350 mm
Display Colour touchscreen display
Dimensions straight hood 230 mm x 230 mm x 145 mm
Memory 4GB micro SD card, USB adapter, SD adapter