Altimeter (general information)
- The built-in altimeter uses a pressure sensor to measure the current air pressure.
- The measured air pressure is then used to provide an "estimate" of the current altitude.
- The electronic mechanism in the watch is pre-programmed with "ISA values" ("International Standard Atmosphere") used to convert pressure values into altitude values. In simple terms, this means that a formula inside the mechanism converts all pressure values into a specific altitude.
- The air pressure and temperature generally become lower as the altitude increases. The altitude is measured based on the ISA values, which define the connection between altitude, air pressure and temperature.
Important!
The electronic mechanism "estimates" the altitude based on the air pressure.
This means that the altitude shown in the display may vary in the same place if the air pressure changes.
Types of altitude measurement
Relative altitude:The relative altitude indicates the difference in altitude between two different locations, e.g. the altitude on the roof of a building measured from the ground floor.
Absolute altitude:
The absolute altitude measures the actual altitude of a location from sea level, e.g. the height from the roof of a building measured from sea level.
Altimeter (special features)
Height gainDepending on the model, up to 40 data sets can be stored in the altimeter's data memory. Each of these data sets consists of an altitude, as well as the date and time. In addition to the individual altitudes, the following data is also stored in the memory:
- Maximum altitude (MAX): stores the highest point within a measurement (E)650 m
- Minimum altitude (MIN): stores the lowest point within a measurement (F)20 m
- Total ascent (ASC): stores the total altitude of an ascent (A+C)280 m + 400 m = 680 m
- Total descent (DSC): stores the total altitude of a descent (B+D)50 m + 450 m = 500 m
- Total memory: stores the lowest, the highest and the accumulated total ascent and descent from all stored measurements
Barometer
- The barometer measures the air pressures and displays tendencies in the weather.
- As a general rule, the higher a person goes (ascent/terrain), the lower the barometric pressure will be.
- An increase in air pressure usually signifies an improvement in the weather.
- A decrease in air pressure usually means that bad weather is on its way.
- The air pressure is displayed with an accuracy of 1 hPa (hectopascals).
- The barometer can measure and display a range from 260 hPa to 1000 hPa.
