435-4 Velocity Multifunction Differential Pressure Meter.
435-4 Velocity Multifunction Differential Pressure Meter.
testo 435-4, multi-functional measuring instrument with built-in differential pressure measurement for A/C,
ventilation and Indoor Air Quality with readings memory, PC software and USB data transmission cable,
with battery and calibration protocol.
The parameters CO2, relative humidity and room
air temperature are available for evaluating
indoor air
quality. Additionally, absolute pressure,
draughts, lux and surface temperature can be
determined.
To determine volume flow, all the possibilities of
flow measurement are available, such as thermal
probes,
vane probes and Pitot tubes.
Anemometer 435-4
| Model | Description |
|---|---|
| 0560 4351 | 435-1 Multifunction Meter |
| 0563 4352 | 435-2 Multifunction Meter w/memory & software |
| 0560 4353 | 435-3 Multifunction Meter with integral diff pressure |
| 0563 4354 | 435-4 Multifunction Meter w/memory, software & diff. press. |
Probe-controlled menus and selectable user profiles, e.g. for duct measurement or long-term measurement,
ensure the user-friendliest operation possible.
The new IAQ probe measures Indoor Air Quality by measuring the CO2 level, air moisture and air temperature.
In addition, lux and comfort level probes can be connected to measure draught air.
Clear analysis and archiving ensure convenient documentation.
Temperature and humidity measurement is built-in in the new thermal probe. The special flow protocol
professionally documents duct measurements. It is also possible to connect additional temperature and
humidity probes.
Readings from up to 3 temperature or humidity probes can be displayed in the measuring
instrument; data transmission is by radio, i.e. wireless.
| Storage temperature | -30 to +70 °C |
| Operating temperature | -20 to +50 °C |
| Probe type Typ T (Cu-CuNi) | |
| Meas. range | -200 to +400 °C |
| Accuracy | ±0.3 °C (-60 to +60 °C)
±0.5% of mv (remaining range) |
| Resolution | 0.1 °C |
| Probe type NTC (Air, humidity, multi-purpose probe) | |
| Meas. range | -40 to +150 °C |
| Accuracy | ±0.2 °C (-25 to +74.9 °C) ±0.4 °C (-40 to -25.1 °C) ±0.4 °C (+75 to +99.9 °C) ±0.5% of mv (remaining range) |
| Resolution | 0.1 °C |
| Probe type Type K | |
| Meas. Range | -200 to +1370 °C |
| Accuracy | ±0.3 °C (-60 to +60 °C)
±0.5% of mv (remaining range) |
| Resolution | 0.1 °C |
| Probe type CO2 | |
| Meas. Range | 0 to +10000 ppm CO2 |
| Resolution | 1 ppm CO2 |
| Probe type Differential pressure probe | |
| Meas. Range | 0 to +25 hPa |
| Accuracy | ±0.02 hPa (0 to +2 hPa)
1% of mv (remaining range) |
| Resolution | 0.01 hPa |
| Probe type Absolute pressure probe | |
| Meas. Range | 0 to +2000 hPa |
| Resolution | 0.1 hPa |
| Probe type humid. sensor, cap. | |
| Meas. Range | 0 to +100 %RH |
| Resolution | 0.1 %RH |
| Probe type Lux | |
| Meas. Range | 0 to +100000 Lux |
| Resolution | 1 Lux |
| Probe type Hot Wire | |
| Meas. Range | 0 to +20 m/s |
| Resolution | 0.01 m/s |
| Probe type Vane | |
| Meas. Range | 0 to +60 m/s |
| Resolution | 0.01 m/s (60 vane)
0.1 m/s (16 vane) |