PCE-VA 20 is a environmental meter for testing heating, ventilation and air conditioning or cooling (HVAC) systems. This environmental meter features a 10 cm / 3.9" Ø fan impeller, easy-to-read backlit LCD, and functions such as display hold, average value, maximum value, minimum value, battery-saving automatic power off, low-battery indicator, and metric or imperial unit selection.

• Measures air flow velocity, volume flow, relative humidity, air temperature, dew  point temperature and wet-bulb temperature
• Air flow velocity range: 0.2 … 30 m/s (39.4 … 5905.5 fpm)
• Accuracy: ±(1.5% of measured value + 0.3 m/s) when less than 20 m/s, ±(3% of  measured value + 0.3 m/s) when more than 20 m/s
• Resolution: 0.1

This environmental meter with outside sensor is a real all-rounder. The wireless environmental meter with outside sensor is easy to assemble based on the instructions provided. You do not have to be a professional to operate the wireless environmental meter and outside sensors. The weather data of the environmental meter with outside sensor for different parameters are sent up to 100 meters by radio signal to the main station.

• 3 displays
• Indoor temperature in Celsius or Fahrenheit
• Outside temperature in Celsius or Fahrenheit
• Indoor air humidity / outdoor air humidity
• Air pressure gauge in inHg or hPa
• Absolute or relative air pressure display selectable
• Precipitation indication in mm or inch
• Precipitation indicator for 1 hour, 24 hours, 1 week, 1 month
• Wind speed in mph, km/h, m/s, knots …
• Wind direction indicator
• Wind chill temperature gauge
• Weather forecast, trend indicator, storm warning
• and much more…

The environmental meter measures the flow velocity according to the hot wire principle. This guarantees a particularly compact design. In addition to the flow rate, the environmental meter can measure the volume flow and the ambient temperature.

• Measuring range: 0.3 … 30.0 m/s / 0.98 … 98.4 ft/s
• Probe length: 270 … 990 mm / 10.63 … 38.98 / 29.1"
• Probe diameter: Ø0.8 … 1.2 mm / 0.031 x 0.047"
• Data memory for 960 measured values
• Wind speed
• Volume flow
• Temperature measurement

The environmental meter is particularly suitable for measurements of noise pollution in the field of industrial, health, safety and environmental monitoring. The environmental meter has a logger function, which enables the storage of up to 32,700 measured values.

• Automatic range: 30 … 130 dB
• Manual ranges: 30 … 80/50 … 100/80 … 130 dB
• Resolution: 0.1 dB
• Accuracy: ±1.4 dB
• Data logger function for 32,000 values
• Including sound calibratorSound calibrator for recalibrating sound measuring devices. Sound measuring devices are delivered pre-adjusted, the sensor of the device is subject to a temporal drift, with the sound calibrator you can always re-calibrate the sound measuring device independently and thus have continuously optimal measurement results. The sound calibrator is an optimal addition to the sound meter.Class II Acoustic Sound Calibrator
• Sound pressure level 94, 104, 114 db
• For weighting filters A, B, C and D
• 1/2 inch microphone connection
• Class II