LV130 Thermo-anemometer

with integrated vane probe

The LV 130 precisely measures air velocity and ambient temperature with a rotating vane probe.

Measuring Units: °F, °C, m³/s, m/s, l/s, m³/h, km/h, fpm, cfm

Parameters: Air velocity, Airflow and Temperature

Operating Principle of the Thermo-anemometer with vane probe

Air velocity: Hall effect sensor

Rotation of the vane probe leads to a circular magnet of 8 poles. A dual Hall effect sensor, placed next to the magnet captures the signals of magnetic field polarity transition. The sensor signal is converted to electrical frequency and is proportional to the rotation velocity of the vane probe. Signal chronology allows to determine the rotation direction.

Thermometer: NTC probe

Negative temperature coefficient probes are thermistors with a resistance that decreases with temperature according to the equation below:

RT = resistance sensor value at temperature T

R(T0 ) = resistance sensor value at reference temperature T0 T and T0 in °C

α and T0 sensor specific constants

Thermo anemometer magnet demonstration with magnetic field in rotation

LV130 Thermo-anemometer with integrated vane probe

Features:

Air velocity: 0.3 to 35 m/s, airflow: 0 to 99,999 m3/h, and temperature: 0 to +50°C
Easy to use and adjustable backlight
Automatic average
Hold function and min-max values
Selection of units
Debit calculation

Specifications of the LV130 Thermo Anemometer with Vane Probe

Parameters	Measuring Units	Accuracy	Measuring Range	Resolution
Air Velocity	m/s, fpm, km/h	From 0.3 to 3 m/s: ±3% of reading ±0.1 m/s From 3.1 to 35 m/s: ±1% of reading ±0.3 m/s	From 0.3 to 35 m/s	0.01 m/s 0.1 m/s
Air Flow	m³/h, cfm, l/s, m³/s	±3% of reading ±0.03 x area (cm²)	From 0 to 99 999 m³/h	1 m³/h
Temperature	°C, °F	±0.4% of reading ±0.3 °C	From 0 to +50 °C	0.1 °C

More Information:

Specifications
Display	4 line display
IP Protection	IP54
Battery Life	58 Hours
Power Supply	4 batteries AAA LR03 1.5 V
Standards	2011/65/EU RoHS II
	2012/19/EU WEEE
	2014/30/EU EMC
	2014/35/EU Low Voltage
Anemometer Type	Vane
Probe Type	Wire Probe
Size	76.7 x 34.2 x 147.9mm
Weight	390g
Operating Temp	Min 0 °C Max 50 °C