Description

The MiniAir64 range of anemometers are designed with three separate parts, Steel vane anemometer, probe handle and separate electronics housing. The Steel measurement heads are designed for aggressive gases and are screwed to the shaft but are not replaceable. These probes are suitable for higher temperatures applications, up to 250°C.

In anemometry, the accuracy achieved by a vane probe is acknowledged to be unmatched. The vane rotation is closely linear to flow velocity and is unaffected by pressure, temperature, density and humidity. In the MiniAir probes, as each metal blade passes the probe handle, a pulse is generated by a simple magnetic pick up in the handle. The electronics in the separate housing reads the pulses generated and converts these readings to a linear 4-20mA output signal.

The MiniAir Steel vane anemometers are available in two different sizes, Micro and Mini, with two different flow ranges available for each: 0-20ms; and 0-40m/s. Each anemometer has a different starting flow velocity due the differences in the initial combination of size and flow velocity have slightly different start up flow velocity as a certain flow is required to overcome the initial stationary friction forces of the individual turbines. This varies with the size, range and blade materials. All outputs are ranged from 0m/s and the anemometers will provide readings below the initial start up speeds once the turbines have some momentum.

Separate units are available with a replaceable plastic and Aluminium vane for non-aggressive gases and Steel anemometers for high temperature applications up to 140°C, as well as a Brass heads with Aluminium blades.

Specifications

Air Probe	MiniAir 64 Micro	MiniAir 64 Mini
Range 20m/s	1.0 – 20 m/s	0.7 – 20 m/s
Range 40m/s	1.3 – 40 m/s	0.8 – 40 m/s
Accuracy	±1.5% full scale ±3.5% reading	±1.0% full scale ±2.0% reading
Operating Temp	up to +140°C
Power Supply	9 – 26vDC
Output Signal	4-20mA
Head Dimensions	ø 11 x 15 mm	ø 22 x 28 mm
Access Opening	16mm	35mm
Probe Length	165mm	175mm
Housing Dimensions	105 x 20 x 30mm (L x H x W)
Cable Length to Electronics	2.4m Cable
Cable Length from Electronics	2m Cable