Description
Details
Product Description
testo 445 climate measuring instrument: an overview of the advantages
The testo 445 climate measuring instrument has two inputs for connecting external probes (which can be ordered separately). At Testo, you have a large selection of suitable probes for the testo 445 climate measuring instrument. Depending on which probe you decide on, you can determine the following parameters:
- Air velocity (in ventilation ducts, at duct outlets and on extractors)
- Volume flow
- Temperature
- Relative air humidity
- Dew point
- Absolute humidity
- Degree of humidity
- Enthalpy
- Pressure
- CO in indoor air
Further practical features of the climate measuring instrument: its internal memory records up to 3,000 readings. The automatic allocation of the duct cross-section is also particularly useful. This means you can save the measurement data so that it is linked to the measuring location (up to 99 measuring locations). The mean value, the last measured value and the min./max. values can be displayed simply by pressing a key.
As optional accessories for the climate measuring instrument, we recommend you get the testo fast printer to print data out directly at the measuring location and the ComSoft software for convenient data analysis on the PC.
Delivery Scope
Technical Data
| General technical data | |
|---|---|
| Weight | 255 g |
| Dimensions | 215 x 68 x 47 mm |
| Operating temperature | 0 to +50 °C |
| Product-/housing material | ABS |
| Battery type | 9V block battery, 6F22 |
| Battery life | 45 h |
| Display type | LCD (Liquid Crystal Display) |
| Display size | 4 lines |
| Data transfer | RS232 |
| Memory | 3,000 measuring values |
| Storage temperature | -20 to +70 °C |
| Temperature – NTC | |
|---|---|
| Measuring range | -50 to +150 °C |
| Accuracy | ±0.5 % of mv (+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) |
| Resolution | 0.1 °C (-50 to +150 °C) |
| Temperature – TC Type K (NiCr-Ni) | |
|---|---|
| Measuring range | -200 to +1370 °C |
| Accuracy | ±0.3 °C (-60 to +60 °C)
±(0.2 °C + 0.5 % of mv) (Remaining Range) |
| Resolution | 0.1 °C (-200 to +1370 °C) |
| Temperature – TC Type J (Fe-CuNi) | |
|---|---|
| Measuring range | -200 to +1000 °C |
| Accuracy | ±0.5 °C or ±0.5 % of mv |
| Resolution | 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 | |
|---|---|
| Measuring range | 0 to 60 m/s |
| Accuracy | See probe data |
| Resolution | 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 | 1 to +20 m/s |
| Accuracy | See probe data |
| Resolution | 0.01 m/s (1 to 10 m/s)
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 | ±0.001 hPa (Probe 0638 1345)
±0.001 hPa (Probe 0638 1445) ±0.01 hPa (Probe 0638 1545) ±1.0 hPa (Probe 0638 1645) |
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