FISCHER 225 Manuale utente
Barograph User’s Manual
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English Edition
Copyright ©, 2011 Feingeratebau K. Fischer GmbH (Germany)
Feingerätebau K.Fischer GmbH
Venusberger Straße 24
D-09430 Drebach
Germany
Tel +49 (0) 37341 / 487-0
Fax +49 (0) 37341 / 487-30
Email [email protected]
Internet www.meteoclima.de
Fischer USA
3050 NW 63rd St
Seattle, WA 98107
USA
Tel +1 206-783-1414
Fax +1 206-783-9209
Email [email protected]
Internet www.scherbarometers.com
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Barograph User’s Manual
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Barograph User’s Manual
Table of Contents
1. General Information.....................................................................................5
2. About Barographs........................................................................................5
2.1 Mechanical Diagram.............................................................................6
2.2 Technical Data...................................................................................... 7
2.3 Model Specications ............................................................................ 8
3. Unpacking the Barograph..........................................................................10
4. Start Up ..................................................................................................... 11
4.1 Setting the Drum Revolution Cycle .................................................... 11
4.2 Mechanical Clockwork........................................................................ 12
4.3 Quartz Clockwork .............................................................................. 13
4.4 Starting the Barograph .......................................................................14
5. Maintenance..............................................................................................15
5.1. Winding the Mechanical Clockwork................................................... 15
5.2. Changing the Battery.........................................................................15
5.3. Replacing the Chart Paper................................................................16
5.4 Setting the correct local pressure....................................................... 17
5.5 Cleaning the Housing.........................................................................17
5.6 Troubleshooting.................................................................................. 18
6. EEC Conformity.........................................................................................19
7. Liability Limitations ....................................................................................20
Appendix 1. Pressure Corrections for Elevation............................................21
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Barograph User’s Manual
1. General Information
This manual contains important information about the function, start-up, and maintenance of Fischer
Barographs. Please review all of the information before initial use of the barograph. For the barograph
to function as intended, all instructions in this manual must be followed in detail. If the instructions are
not followed closely, operational malfunctions may occur.
2. About the Barographs
Fischer barographs record changes in atmospheric pressure over time. The measuring element
used is a 7-cell aneroid capsule set with a 62-mm diameter. They are constructed from a corrosion-
resistant copper-beryllium alloy whose excellent exibility has made it the best material for measur-
ing atmospheric pressure for the past 70 years. These aneroid capsules are essentiality immune to
hysteresis and elastic after-effects.
The effect of temperature changes on the measurement is compensated for with bimetal elements
over the full range of pressures for temperatures between -30° C (-22° F) and 40° C (104° F).
The elements of the precision movement are made of brass in various nishes, depending on the
model. All crucial axles use jeweled bearings for lowest possible residual friction. All materials used
are corrosion-resistant. The measuring element is enclosed within the fully ventilated housing and is
therefore protected from mechanical damages. Optional lockable housings are also available. Some
models employ an enhanced dampening movement for use at sea.
All standard barograph models have optional pressure ranges that are selected before purchase to
match the station elevation where they will be used, but the models with enhanced dampening are as-
sumed to be used at sea, so they come with a single xed pressure range for sea-level applications.
The barographs are equipped with either a mechanical or quartz clockwork that drives the rotation of
the recording drum.
For the quartz clockworks, the drum revolution can be easily set to a daily, weekly, or monthly cycle.
The corresponding time in hours would be 25.6 hr, 176 hr, and 783 hr respectively.
The mechanical clockworks can be changed between daily or weekly operation.
All models of barographs come with ber pens
and chart paper to last one year. The Captain
and Admiral models have a chart storage tray
built into them. The Captain model is accessed
from the end of the unit; the Admiral model from
the side.
Chart tray on Captain’s Choice model
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Barograph User’s Manual
2.1 Mechanical Diagram
1. Precision Movement
2. Socket
3. Grub screw set
4. Pressure adjustment screw
5. Upper telescope case
6. Lower telescope case
7. Capsule set
8. Pin
9. Bimetal arm
10. Axle
11. Transport mode screw
12. Null-setting lever
19
4
21
5
6
7
20
21
18 15 17
16 14 3
11
13
22
12
10
23
X
8
9
24
13. Housing lock
14. Disengaging rod release
15. Pen-arm
16. Fiber pen
17. Disengaging rod
18. Clockwork
19. Fastening nut
20. Recording drum
21. Diagram retaining strips
22. Housing
23. Handle
24. Pen-arm adjustment screw
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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 ber pens
AA Batteries (Quartz Models)
Carrying Case ES-55 (for Models 225/227)
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Barograph User’s Manual
2.3. Model Specications
“Navigator’s Choice” Models 225, 227
Housing made of cast aluminum and chrome steel,
with a white nish. Movement brass and steel, with
at chrome nish. Glazing made of transparent
synthetic material.
Dimensions 290 x 145 x 190 mm
(11.4” x 5.7” x 7.5”); weight 2.5 kg (5.5 lbs)
Model 225 Mechanical wind-up clockwork. Runs in
2 modes: daily or weekly.
Model 225Q Quartz clockwork. Runs in 3 modes: daily, weekly, and monthly.
Optional pressure ranges selected at time of purchase.
Model 227 and 227Q same as above with vibration-damped movement for use at sea, with a xed
measuring range of 955 - 1055 hPa.
“Captain’s Choice”
Models 205M, 207M and 285M, 287M
Housing made of beech hardwood with a mahog-
any stain nish. Comes with choice of movement
nishes.
Dimensions 345 x 170 x 180 mm
(13.6” x 6.7” x 7.1”); weight 3.4 kg (7.5 lbs)
Model 205M Mechanical wind-up clockwork. Runs in 2 modes: daily or weekly.
Movement brass and steel, with at chrome nish.
Model 205MQ Quartz clockwork. Runs in 3 modes: daily, weekly, and monthly.
Movement brass and steel, with at chrome nish.
Model 285M, 285MQ same as above with polished brass movement.
Optional pressure ranges selected at time of purchase.
Model 207M, 207MQ and 287M, 287MQ same as above. With vibration-damped movement for use at
sea, with a xed measuring range of 955 - 1055 hPa.
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Barograph User’s Manual
“Admiral’s Choice” Models 265, 267
Housing made of beech hardwood with a
mahogany stain nish. Glazing cut glass with
beveled edges. Base plate and movement of
polished brass; includes front drawer for charts
and pens.
Dimensions 345 x 190 x 185 mm
(13.6” x 6.7” x 7.1”); weight 4.4 kg (9.7 lbs)
Model 265M Mechanical wind-up clockwork. Runs in 2 modes: daily or weekly.
Model 265MQ Quartz clockwork. Runs in 3 modes: daily, weekly, and monthly.
Optional pressure rages selected at time of purchase.
Model 267M and 267MQ same as above With vibration-damped movement for use at sea with a xed
measuring range of 955 - 1055 hPa.
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Barograph User’s Manual
3. Unpacking the Barograph
After taking the barograph out of it’s packaging, remove the surrounding paper, including the carrier-
handle cardboard wrap.
Warning: Be sure to remove all accessories (chart paper, ber-pens, battery, and clock-
work key) from the package before discarding it.
To open the housing, move the housing lock (13) to the left and raise the lid. For models 225/227
move the housing lock to the left and right.
In models 225 and 227 (Navigator’s Choice) both sides of the housing can be opened.
The barographs are initially set to transport mode. The housing is locked and the transmission system
is decoupled in two places. (This does not apply to the 2X7 series with vibration-damped measuring
systems). The pen-arm is also secured to the disengaging rod with a circular cardboard clip.
Before starting the barograph, the transmission system must be reconnected as shown, and the write-
arm must be removed from the cardboard clip.
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