TSI uses hot air force measurement technology to measure wind speed. Three different types of sensors provide flexibility and a wide dynamic range for your precise measurements. The durable 8455 general detection probe and 8465 windowless detection probe have demonstrated high precision and fast response time in many different application fields. The 8475 * probe can accurately measure at low wind speeds and can be ideally applied to various wind directions. All of these models can be set by the user for wind speed range and output options.

		8455	8465	8475
Wind speed range		0.125～1.0,1.25,1.50,2.0,2.5 , 4.0,5.0,7.5,10.0,12.5,15.5, 20.0, 25.0,30.0,40.0,50.0m/s		0.05～0.5,0.75,1.00, 1.25,1.50,2.0,2.5m/s
error		± 2% of reading ± ± 0.5% of selected full range		± 3% of reading ± 1% of selected full scale
repeatability		<± 1.0% reading	<± 1.0% reading	N/A
Response time to airflow		0.2 seconds	0.2 seconds	5.0 seconds
Input power supply		11-30VDC or 18-28VAC, maximum current 350mA
output signal		0-5V, 0-10V, 2-10V, 0-20mA, 4-20mA (adjustable on site)
Output Impedance		Voltage mode: less than 1 ohm, maximum source current 20mA
output resistance		Current mode: maximum load of 500 ohms
output time constant		0.05-10s (adjustable on site)
probe length		7.5cm, 15cm, 22.5cm or 30cm
temperature range	temperature compensation	0～60℃
	Sensor operation	0～93℃
	storage	0～93℃

General testing (8455)	Window free detection (8465)	*Testing (8475)
Protective probe tube Sturdy ceramic sensor A wide range of applications Rapid response time	Minor airflow obstruction Ideal detection instrument for confined space Rapid response time	*Probe Tube Can detect low wind speeds below 0.05 meters per second It is an ideal instrument for detecting unknown wind directions or multiple wind directions