Recorder, drum

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OBJECT TYPE
SEISMOGRAPH/PHOTOGRAPHIC
DATE
1967–1983
ARTIFACT NUMBER
1995.1598.002
MANUFACTURER
Sprengnether Instrument Co.
MODEL
Unknown
LOCATION
St. Louis, Missouri, United States of America

More Information


General Information

Serial #
3324
Part Number
2
Total Parts
5
AKA
N/A
Patents
N/A
General Description
STEEL; SYNTHETIC; ELASTIC STRAPS

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length
159.0 cm
Width
41.0 cm
Height
39.0 cm
Thickness
N/A
Weight
N/A
Diameter
N/A
Volume
N/A

Lexicon

Group
Physics
Category
Geophysics
Sub-Category
N/A

Manufacturer

AKA
Sprengnether
Country
United States of America
State/Province
Missouri
City
St. Louis

Context

Country
Canada
State/Province
Ontario
Period
PROBABLY THE 1960S UP TO THE 1980S
Canada
THESE RECORDERS WERE PART OF A SEISMOGRAPH STATION WHICH WAS ONE OF ABOUT 2 DOZEN THAT WERE INSTALLED ACROSS CANADA IN THE GSC'S NETWORK TO MONITOR ACTIVITY OF THE EARTH'S CRUST TO DETERMINE THE LOCATION OF EARTHQUAKES. THIS INFORMATION WAS USED BY RESEARCHERS STUDYING DYNAMICS OF THE EARTH'S CRUST & PLATE DYNAMICS [REF 1].
Function
USED TO RECORD THE MOVEMENT OF THE MIRRORS OF 3 GALVANOMETERS CONNECTED TO SEISMOMETERS IN ORDER TO PLOT THE EARTH'S MOTIONS AS A PHOTOGRAPHIC RECORD.
Technical
PREVIOUS MODELS RECORDED THE MOTION OF THE SEISMOMETER PENDULUM DIRECTLY WITH PEN ON PAPER; THIS DEVICE RECORDED THE MOTION AS REFLECTED FROM MIRRORS OF GALVANOMETERS ON TO PHOTOGRAPHIC PAPER; MODERN ONES RECORD THE CURRENT VARIATIONS OF ELECTROMAGNETS FEEDING INTO A COMPUTER [REF 1].
Area Notes
Unknown

Details

Markings
MFG'S PLATE: ‘[LOGO]/ SPRENGNETHER INSTRUMENT CO./ ST. LOUIS, MO./ U.S.A./ 3324'/ DECAL: ‘S-20021/ DO NOT REMOVE TAG'/ THREE PLATES ON TOP OF DEVICE: [1st plate]: ‘THUNDER BAY, ONTARIO ON-DATE-DEBUT/ 48 [degrees] 25' N 89 [degrees] 16' W/O OFF-DATE-FIN/ S.P./P.C. --Z--[ARROW] Ts 0.99 hs 0.79 Tg 0.23 hg 0.78/ UT/TU -CORR./ UT/TU-CORR./ MAG./AMP. @ 1 sec. 23,800/ Z/ (LHC)/ CAL./ 11/83'/ [2nd plate]: ‘THUNDER BAY, ONTARIO ON-DATE-DEBUT/ 48 [degrees] 25'N 89[degrees] 16' W/O OFF-DATE-FIN/ S.P./P.C.-N-[ARROW] Ts 0.98 hs 0.82 Tg 0.20 hg 0.84/ UT/TU -CORR./ UT/TU-CORR./ MAG./AMP. @ 1 sec. 23,300/N/ (LHC)/ CAL. 11/83'/ [3rd plate]: ‘THUNDER BAY, ONTARIO ON-DATE-DEBUT/ 48 [degrees] 25'N 89 [degrees] 16'W/O Off-date-fin/ S.P./P.C.-E-[ARROW] Ts.0.97 hs 0.90 Tg 0.23 hg 0.88/ UT/TU-CORR./ UT/TU-CORR./ MAG./AMP. @ 1sec. 23,100/E/ (LHC)/ CAL. 11/83'
Missing
From CA of 02/22/2002 by Matthew Bruce: No - appears complete
Finish
FRONT, BOTTOM & SIDE PANELS GREY TEXTURED FINISH/ BLACK KNOBS/ STAINLESS STEEL DRUM/ ELASTIC STRAPS/ HAS BLACK SLOTTED PLATES AFFIXED TO FRONT PANEL
Decoration
N/A

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If you choose to share our information about this collection object, please cite:

Sprengnether Instrument Co., Recorder, drum, between 1967–1983, Artifact no. 1995.1598, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1995.1598.002/

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