Testo 445 Indoor Air Quality Meter
Testo

Testo 445 Indoor Air Quality Meter

  • Probe options for high temperature, air flow and velocity, relative humidity, and more.
  • Multi-function, simultaneously measures up to 6 parameters at a time (2 displayed on screen).
  • Internal reading memory for up to 3,000 readings.
  • Automatic mean value calculation and determination of the volume flow.
  • PC software for analysis and archiving measurment values.
SKU
testo-445-iaq-meter
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You can keep a close eye on indoor air quality with the testo 445 climate measuring instrument: the allrounder can measure up to 6 parameters (with the appropriate probe), which can help you make a professional assessment of indoor air quality. The climate measuring instrument therefore supports you in adjusting and checking ventilation and air conditioning systems.

The testo 445 has two probe inputs for the connection of a broad range of probes for measurements on ventilation/air conditioning systems. The instrument records flow velocity values in a duct, at a duct outlet or on extraction systems. In addition to this, the allrounder measures or calculates the parameters volume flow, Indoor Air Quality, temperature, relative humidity, dewpoint, absolute humidity, degree of humidity, enthalpy, pressure and CO.

At the simple press of a button, the testo 445 displays the last measurment value measured as well as minimum, maximum and mean values. In addition to this, measurement data can be stored according to measurement site and analyzed on a PC, or documented on site with the Testo fast printer.

Operating Temperature 0 to +50 °C
Storage Temperature -20 to +70 °C
Display LCD, 4 lines
Battery Type 9V block battery
Battery Life 6 - 45 hours (depending on probe)
PC Connection RS232 interface
Weight 255 g
Housing Material ABS
Warranty 2 years
Memory 3000
Dimensions 215 x 68 x 47 mm
Calculated Humidity Parameters td, g/m3, g/kg pressure compensated, J/g
Calculated Volume Flow m3/h, m3/min, m3/s, I/s, cfm
  (density compensated) 0 to 100 m/s; 0 to 99999 m3/h
Sensor Type Range Accuracy Resolution
Type K (NiCr-Ni) -200 to +1370 °C
  • ±0.5% of m.v. (-200 to -60.1 °C)
  • ±0.5% of m.v. (+60.1 to +1370 °C)
  • ±0.3 °C (-60 to +60 °C)
 0.1 °C
Type J (Fe-CuNi) -200 to +1000 °C
  • ±0.5% of m.v. (-200 to -60.1 °C)
  • ±0.5% of m.v. (+60.1 to +1370 °C)
  • ±0.3 °C (-60 to +60 °C)
 0.1 °C
NTC -50 to +150 °C
  • ±0.5% of m.v. (+100 to +150 °C)
  • ±0.2 °C (-25 to +74.9 °C)
  • ±0.4 °C (-50 to -25.1 °C)
  • ±0.4 °C (+75 to +99.9 °C)
 0.1 °C
Testo humid. sensor, cap. 0 to +100 %RH See Datasheet (downloads) 0.1 %RH
Vane 0 to +60 m/s See Datasheet (downloads) 0.01 m/s
Thermal 0 to +20 m/s See Datasheet (downloads)
  • 0.01 m/s (0 to +10 m/s)
  • 0.1 m/s (+10.1 to +20 m/s)
Pressure See Datasheet (downloads) ±0.1% of m.v.
  • 0.001 hPa (Sonde 0638 1345)
  • 0.001 hPa (Sonde 0638 1445)
  • 0.01 hPa (Sonde 0638 1545)
  • 1 hPa (Sonde 0638 1645)
CO2 Probe 0 to +10000 ppm CO2
  • ±(100 ppm CO2 +3% of m.v.) (+5000 to +10000 ppm CO2 )
  • ±(500 ppm CO2 +2% of m.v.) (0 to +5000 ppm CO2 )
 1 ppm CO2 (0 to +10000 ppm CO2)
CO Probe 0 to +500 ppm CO
  • ±5% of m.v. (+100 to +500 ppm CO)
  • ±5 ppm CO (0 to +100 ppm CO)
 1 ppm CO (0 to +500 ppm CO)