Fischer ZEISS Marine Barograph 207M

Fischer ZEISS Marine Barograph 207M
Fischer ZEISS Marine Barograph 207M
Brand: Fischer
Availability: In Stock

Marine Barograph are used to measure and record the history of atmospheric pressure. The measuring element in the Fischer barographs is a set of 7 aneroid capsules, manufactured of a copper-beryllium alloy that essentially eliminates age-hardening, hysteresis, and elastic after effects that could otherwise degrade the accuracy. The influence of temperature on the set of aneroid capsules and the transmission system is compensated by use of bimetal components over the full measuring range and for temperatures between -30 to +40 °C (-22 to 104 °F). All contacts in the movements are jewelled to reduce friction.

For each model there is a choice of mechanical wind-up clockworks or quartz clockworks, which can be shifted in an instant for daily, weekly or monthly revolution. The actual periods are 25.6 hrs. 176 hrs., and 783 hr. The recording instruments are delivered complete with fibre pens and a year's supply of recording charts.

Fischer instruments are unique in offering an option on each model with enhanced dampening for barograph use at sea.

Sensor - 7 aneroid capsules ±0.7 hPa
Measuring ranges - 955 to 1055 hPa
- 930 to 1030 hPa
- 905 to 1005 hPa
- 880 to 980 hPa
- 855 to 955 hPa
0 to 150 m above sea level
150 to 350 m above sea level
350 to 600 m above sea level
600 to 850 m above sea level
850 to 1.100 m above sea level
Clockworks Mechanical drum recording clockwork according to DIN 58658
revolution times changeable: daily revolution 25.6 h, weekly revolution 176 h autonomous operation 1 week
Registration drum - height 93 mm diameter 93.3 mm
- height of registration 80 mm
- chart division 1 hPa
Dimensions 345mm x 190mm x185mm
Weight Approximately 4.5 kgs