Water Flow Meter Propeller Type

Ideal for educational use as well as for work in remote locations. The probe folds down into 3 separate sections measuring 16" each. This collapsible design allows you to easily pack the flowmeter in a backpack. Flow measurements can be taken in knots, km/h, mph, and m/s. The meter also takes temperature measurements in either °F or °C, including minimum and maximum temperature and current temperature. The basic unit includes meter, foldable probe, standard flow sensor and carrying case.

Also included is a wind speed impeller which allows you to take air velocity and wind chill measurements. To take flow measurements from a bridge or other elevated location, use the flow sensor with 15 meter cable (purchase seperately). The unit automatically turns itself off after 36 hours. Power: CR2032 Lithium battery (included). Provided with Backlight 

Impellers specifications: 

Water impeller: ø 60 mm

· Minimum sensitivity: < 0.3km/h - < 0.1m/s
· Precision: +/-2%
· ‘‘off-axis’’ error: +/-20° / +/-3%

Regular size windspeed impeller: ø 20 mm, hole diameter ø 33 mm.

· Minimum sensitivity: < 3km/h - < 1m/s
· Precision : +/-2%· ‘‘off-axis’’ error: +/-30° / +/-3%
· Operating temperature : -50°C to +100°C

Small size windspeed impeller: ø 12 mm, hole diameter ø 18 mm.

· Minimum sensitivity: < 3km/h - < 1m/s
· Precision: +/-2%
· ‘‘off-axis’’ error: +/-10° / +/-3%
· Withstood temperature: -50°C to +100°C

Technical data

· Sealed and weatherproof instrument
· Thread on the bottom of the instrument for fixing to a tripod (1/4’’)
· Speed resolution : 0.1 for all units (except in cm/s: 3cm/s)
· Maximum speed: 150 km/h (except in cm/s: 999cm/s)
· Thermometer precision : +/- 0.2°C
· Thermometer resolution : 0.1°C
· Power supply : 2 batteries, 1.5V AA. Battery lifetime, at least 3 years with occasional use of the display backlight.    To replace, loosen the three screws on the metal plate.
· Weight : 210 grams (insubmersible)
· Dimensions : ø66 X 137 mm