SwemaFlow 236 measures air flow on exhaust valves in HVAC systems. The unique Swema principle, a net of hot wires, gives accurate measuring values over the whole measurement range.
SwemaFlow 236 manual
SwemaFlow 236 Product sheet
Air flow: 1...65 l/s, 3.6...234 m³/h, 2.1...137 cfm
Temperature: 0...50 °C, 32...122 °F
Barometer: 600...1200 hPa, 18...35 inHg
Air flow: ±3.5% read value (at 20...25 °C)
min ±1 l/s, 3.6 m³/h, ±2.1 cfm
Temperature: ±1 °C, ±2 °F
Barometer: ±3.5 hPa, ±0.1 inHg
At 95% coverage probability in non condensing, non moist air, <80%RH, non aggressive gases.
Measurements corrections based in the calibration protocol are not needed to obtain the above stated uncertainty.
Shaft length: 45...80 cm (adjustable)
Measurement opening: 190 x 200 mm (inner)
Height: 330 mm
Weight: 1.5 kg
Power supply: Rechargeable Li-Ion battery
Battery life: <9 hours continuous measurement
Battery charging time: <2 hours with included adapter, with usb-adapter (mini-usb) 5V and minimum 0,5A output it takes longer. SwemaFlow can be used during charging.
Measuring principle and recommendations
Net of hot wires. SwemaFlow 236 with and without adapters is primarily for exhaust air flows and measures according to EN 16211 method ET 21. For supply valves, grilles and diffusers Swema recommends SwemaFlow 126 with the back pressure function and SwemaFlow 4001 with a larger cross section for higher flows.
Temperature and barometric pressure is measured. Select Real or Standard flow with PC-setting.
Low weight and telescopic handle with angular adjustment.
Segment with backlight, hold. Digits can be displayed upside down.
l/s, m³/h, °C and hPa or cfm, °F and inHg, depending on PC-settings.
SwemaFlow 236, charging adapter (230 V Europlug - EN 50075), calibration protocol, manual, aluminium frame case