FISCHER 205M, User Manual, Page: 7 / 21

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Barograph User’s Manual
2.2 Technical Data
Accuracy of measurement ±0.7 hPa (mb)
Chart graduation 1 hPa (mb)
Measuring range corresponding altitude
955 to 1055 hPa 0 up to 150 m above sea level ( 0 to 490 ft)
930 to 1030 hPa 150 up to 350 m above sea level ( 490 to 1,150 ft)
905 to 1005 hPa 350 up to 600 m above sea level (1,150 to 1,970 ft)
880 to 980 hPa 600 up to 850 m above sea level (1,970 to 2,790 ft)
855 to 955 hPa 850 up to 955 m above sea level (2,790 to 3,140 ft)
Clockwork
Mechanic drum clockwork: International accuracy standard DIN 58658
Revolution cycle day = 25.8 h
week = 176 h
Running period 1 week (see later notes on clockwork)
Electronic quartz clockwork
Revolution cycle day = 25.8 h
week = 176 h
month =783 h
Running period 12 months (uses two AA 1.5 V batteries)
Recording drum
Drum material: plastic
Drum dimensions: 93.3 mm diameter, 93 mm high
Chart paper clamp material: brass nickel plates
Chart paper write range 80 mm; resolution 1 hPa (inches charts also available)
Materials
Transmission system: brass matte-chromium-plates, axles in chrome-plated steel
Movement stand: aluminium (2S5/267M Brass polishes)
Housing cover part : 225 / 227 aluminium and chrome-plated steel X5CrNi1810,
corrosion resistant, other models, polished wooden cases
Accessories
Additional chart paper
Sealed pack of 2 fiber pens
AA Batteries (Quartz Models)
Carrying Case ES-55 (for Models 225/227)