The Testo 450  

The Testo 450 instrument measures four parameters: Velocity, Humidity, Dew Point and Temperature. 
The display indicates two measured values simultaneously. When measuring Humidity or Air Velocity, combined probes simultaneously measure the temperatures value.


An instrument for everyday measuring tasks in HVAC or industry
Measurement of velocities and temperature in filter systems and duct openings in air conditioning ducts
Monitoring of the air exchange value in air conditioned rooms
Averaging for the measurement of irregular velocity profiles in a section e.g. in exhaust ducts of for the calculation of volume flow
Measurements in a room %RH, °C/F, min/max
Compare the relative humidity of the air drawn in from outside with the conditioned air flowing out from the exhaust ducts
Monitoring of condensation in air conditioning ducts via dew point calculation
Surface temperature measurement in motors
 
 
Features:
Measuring instrument and display are integrated in the probe
Very practical one-hand operation
No awkward cable connections
Robust, waterproof design, can be wiped clean

 
 
Technical Data: Testo 450
Measuring Range: 0 to 100%RH 
-40 to 1000 °C 
(-40 to 1830 °F) 
0.2 to 60 m/s 
(80 to 9999fpm)
Accuracy: ±0.4° (0 to 50°C/32 to 100 °F) 
±0.5° (rest of range) 
±2%RH (2 to 98%RH) 
velocity accuracy - see ordering sheet
Storage Temperature: -30 to 60 °C (-22 to 144 °F)
Warranty: Instrument: 3 years 
Probe: 1 year