testo 445 - Service instrument for air conditioning / ventilation systems

Order-Nr.  0560 4450

  • Multi-function climate measuring instrument: measure up to 6 measurement parameters at the same time

  • Internal reading memory for up to 3,000 readings

  • Automatic allocation of the duct cross-section to the measuring location (max. 99 measuring locations)

  • Automatic mean value calculation and determination of the volume flow

You can keep a close eye on indoor air quality with the testo 445 climate measuring instrument; this versatile tool can measure up to 6 parameters (with the appropriate probe), which can help you make a professional assessment of indoor air quality. This climate measuring instrument supports you in adjusting and checking ventilation and air conditioning systems.

This meter uses a sensor to start up.

Click here for filter selection.

Product Description

The testo 445 VAC instrument measures temperature, relative humidity, dew point, absolute humidity, degree of humidity, enthalpy, all types of air velocity (in ducts, duct openings, or extractors), volume flow, pressure, and indoor air quality.

 

Delivery Scope

testo 445 instrument, including battery and calibration protocol
Temperature - NTC

Measuring range

-58° to 302 °F / -50 to +150 °C

Accuracy

±0.5 % of mv (212° to 302 °F) / ±0.5 % of mv (+100 to +150 °C)

±0.4 °F (-13° to 166.8 °F) / ±0.2 °C (-25 to +74.9 °C)

±0.7 °F (-58° to -13.2 °F) / ±0.4 °C (-50 to -25.1 °C)

±0.7 °F (167° to 211.8 °F) / ±0.4 °C (+75 to +99.9 °C)

Resolution

0.1 °F (-58° to 302 °F) / 0.1 °C (-50 to +150 °C)

Temperature - Type K TC

Measuring range

-328° to 2498 °F / -200 to +1370 °C

Accuracy

±0.5 °F (-76° to 140 °F) / ±0.3 °C (-60 to +60 °C)

±(0.4 °F + 0.5 % of mv) (Remaining Range) / ±(0.2 °C + 0.5 % of mv) (Remaining Range)

Resolution

0.1 °F (-328° to 2498 °F) / 0.1 °C (-200 to +1370 °C)

Temperature - Type J TC

Measuring range

-328° to 1832 °F / -200 to +1000 °C

Accuracy

±0.9 °F or ±0.5 % of mv / ±0.5 °C or ±0.5 % of mv

Resolution

0.1 °F (-328° to 1832 °F) / 0.1 °C (-200 to +1000 °C)

Humidity - Capacitive

Measuring range

0 to 100 %rH

Accuracy

See probe data

Resolution

0.1 %rH (0° t1 100 %rH)

Velocity - Vane anemometer

Measuring range

0 to 11811 fpm / 0 to 60 m/s

Accuracy

See probe data

Resolution

1.97 fpm / 0.01 m/s

Ambient CO₂

Measuring range

0 to 10000 ppm

0 to 1 Vol.%

Accuracy

±(100 ppm + 3 % of mv) (5000 to 10000 ppm)

±(500 ppm + 2 % of mv) (1 to 5000 ppm)

Vol %: see probe data

Resolution

1 ppm

0.0001 Vol.%

Velocity - Thermal anemometer

Measuring range

197 to +3937 fpm / 1 to +20 m/s

Accuracy

See probe data

Resolution

0.01 fpm (197 to 1969 fpm) / 0.01 m/s (1 to 10 m/s)

0.1 fpm (1988.2 to 3937 fpm) / 0.1 m/s (10.1 to 20 m/s)

Ambient CO

Measuring range

0 to 500 ppm

Accuracy

±5 % of mv (100 to 500 ppm)

±5 ppm (0 to 100 ppm)

Resolution

1 ppm (0 to 500 ppm)

Pressure measurement

Measuring range

See pressure probes

Accuracy

±0.000 InH₂O (Probe 0638 1345) / ±0.001 hPa (Probe 0638 1345)

±0.000 InH₂O (Probe 0638 1445) / ±0.001 hPa (Probe 0638 1445)

±0.00 InH₂O (Probe 0638 1545) / ±0.01 hPa (Probe 0638 1545)

±0.4 InH₂O (Probe 0638 1645) / ±1.0 hPa (Probe 0638 1645)

General technical data

Dimensions

8 x 3 x 2 in. / 215 x 68 x 47 mm

Operating temperature

32° to 122 °F / 0 to +50 °C

Housing

ABS

Battery type

9V block battery, 6F22

Battery life

45 h

Display type

LCD

Display size

4 lines

Data transfer

RS232

Memory

3,000 measuring values

Storage temperature

-4° to 158 °F / -20 to +70 °C

Weight

9 oz. / 255 g

Probes

Pitot tube, stainless steel, 19.7 in.

Order Number: 0635 2045

Pitot tube, stainless steel, 13.8 in.

Order Number: 0635 2145

Pitot tube, stainless steel, 3.3 ft

Order Number: 0635 2345

Precision pressure probe, 100 Pa

Order Number: 0638 1345

Pressure probe, 10 hPa,

Order Number: 0638 1445

Pressure probe 100 hPa

Order Number: 0638 1545

Accessories for temperature probes

Additional accessories and Spare parts

9V rechargeable battery for instrument

Order Number: 0515 0025

Handle for plug-in measuring tip

Order Number: 0600 5593

Software and Accessories

RS232 cable

Order Number: 0409 0178

ComSoft Professional 4

Order Number: 0572 1704