This is a device for measuring height, pressure and temperature. It is manufactured by testo and its model number is 511.
The testo 511 is an absolute pressure measuring instrument designed for measuring absolute pressure, barometric pressure, and altitude. It is commonly used for pressure compensation in velocity measurement within ducts, laboratories, and production processes. The device features a display, operating buttons, and a protective cap, powered by two 1.5V AAA batteries. This manual is written in German.
| Sensor | Absolute pressure sensor |
|---|---|
| Measuring ranges | 300...1,200 hPa, 120.4...481.8 inH2O |
| Accuracies | ±3 hPa, ±1.2 inH2O |
| Measuring rate | 0.5 s |
| Protection class | IP40 |
| Ambient conditions | 0...50 °C |
| Voltage supply | 2x 1.5 V type AAA |
| Battery life | 200 h |
| Dimensions | 119x46x25mm |
| Weight | 90g |
| Warranty duration | 2 years |
It is normally used to measure absolute pressure, e.g. for pressure compensation in velocity measurement in ducts, laboratories and production processes.
The device measures absolute pressure, barometric pressure, and altitude above sea level.
The battery life is 200 hours when the display light is not used.
You must adhere to the permissible measuring range.