Description
The MiniAir Junior is a portable vane anemometer that is particularly suitable for the heating, air conditioning and ventilation engineer. The MiniAir Junior is a single channel hand held measuring instrument for air flow measurements using a selection of detachable vane anemometers. The vane anemometers come in three different sizes: Micro; Mini; and Macro, with two different flow ranges available for each: 0-20ms; and 0-40m/s.
The individual probes include a synthetic plastic construction snap head with a metal turbine that generates a frequency output each time the metal blade passes the probe handle. The frequency of rotation is virtually proportional to the air-flow velocity and largely independent of pressure, temperature, density and humidity. The MiniAir Junior display converts the rotational frequency into a standard signal and shows the measured value in the display. Probes are available with Aluminium vane and handleswhich are suitable for non-aggressive gases.
Features
- Suitable for use with all MiniAir Junior flow sensors.
- 4 Digit LCD display
- Instantaneous value measurements
- Minimum, Maximum and Averare values continuously selectable
- 2 Average value measurement intervals: Fast = 6 Secs, Slow = 22 Secs.
- Easy operation by key pad
- Snap head vanes for easy measuring vane replacement, existing calibration retained.
Specifications
MiniAir Junior Ex Display Unit
| Display: | 4 Digit LCD |
| Unit of Measure: | Flow: m/s |
| Power Supply: | 9V LR22 Battery |
| Battery Life: | 12 Hours |
| Case Dimensions: | 80 x 145 x 39mm |
| IP Rating: | IP40 (ABS Plastic) |
| Weight: | 230g |
| Operating Temp: | 0 to 50°C |
| Storage Temp: | -30 to + 80°C |
Vane Anemometers
| Air Probe | Micro | Mini | Macro |
| Flow Range | 0.5-20m/s 0.7-40m/s |
0.3-20m/s 0.5-40m/s |
0.15-20m/s 0.3-40m/s |
| Accuracy of Flow | ±2% fs, ±5% rdg |
±1% fs, ±3% rdg |
±1% fs, ±3% rdg |
| Operating Temperature | -30 to +140°C | -30 to +140°C | -30 to +140°C |
| Vane & Shaft Construction | Aluminium | Aluminium | Aluminium |
| Head Dimensions | ø 11 x 15 mm | ø 22 x 28 mm | ø 85 x 80 mm |
| Handle Diameter | 15mm | 15mm | 15mm |
| Probe Length | 165 mm | 175 mm | 235 mm |
| Cable Length | 1.8m | 1.8m | 1.8m |
Snap-Head Replacement
The snap-head fixing system renders it very simple to fit a new impeller to the flow probe: this saves costly non-productive time and in the event of damage to the snap-head enables you to have the probe back in service in a matter of seconds by simply changing the snap-head.
Any snap head replacement should be of the same original size and flow range.
