The aneroid barographs listed are precision instruments for continuously recording air pressure.
Compared to the air pressure values read from mercury barometers, those obtained with aneroids are independent of the ambient temperature and the acceleration due to gravity, so that the corrections usual with mercury barometers are not necessary.
Aneroid barographs are therefore used wherever the rapid determination of the current air pressure in conjunction with the observation and documentation of the air pressure trend is of interest.
The main features of the aneroid barograph are:
- network-independent and tamper-proof
- wider recording drum (160 mm)
- Pressure gauge with overload protection for transport up to 2700 m altitude
- 9-fold membrane can set
- corrosion-resistant, elastic material
- good measurement accuracy (± 0.3 hPa)
- long-term stable
- temperature compensated
- switchable (1d - 7d) mechanical movement
- high reliability
- maintenance-free
