Sensor, snow

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OBJECT TYPE
snow depth/sonic
DATE
1988–1990
ARTIFACT NUMBER
2004.0332.001
MANUFACTURER
Campbell Scientific (Canada) Corp.
MODEL
CSMAL01
LOCATION
Edmonton, Alberta, Canada

More Information


General Information

Serial #
1060
Part Number
1
Total Parts
1
AKA
Snow depth sensor
Patents
N/A
General Description
metal casing and parts/ synthetic parts

Dimensions

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

Length
33.3 cm
Width
18.3 cm
Height
19.5 cm
Thickness
N/A
Weight
N/A
Diameter
N/A
Volume
N/A

Lexicon

Group
Meteorology
Category
Precipitation amount, rate & duration measurement
Sub-Category
N/A

Manufacturer

AKA
Campbell
Country
Canada
State/Province
Alberta
City
Edmonton

Context

Country
Canada
State/Province
Unknown
Period
late 1980's; this instrument was apparently in use for 15 years (Ref. 6)
Canada
A snow measuring instrument of a type designed and used by the Meteorological Service of Canada to gather snow depth data in Canada. Part of a large collection of meteorological instruments acquired from the Meteorological Service of Canada (previously Atmospheric Environment Service) by the CSTM since 1967. MSC is the government agency responsible for collecting and disseminating meteorological data and forecasts in Canada. It was founded in 1871 in Toronto where it is still headquartered. The MSC was originally on the University of Toronto downtown campus but moved to Downsview in 1971 on land owned by UofT. The headquarters houses laboratories, research facilities and calibration and instrument maintenance facilities (now largely contracted out).
Function
An instrument used to measure the depth of fallen snow by using a sonic wave to measure the distance between the instrument and the snow surface.
Technical
A Campbell Scientific snow depth sensor. This CSMAL sonically measures the distance to a snow surface then corrects for temperature in order to compute the depth of snow from the beginning of the season. It was originally designed by AES and later built and sold by Campbell Scientific (CS). In 1990 CS replaced it with the less expensive UDG01 which did not include the temperature sensor (Ref. 1). According to the AES and CS manuals (Refs. 2-3), the primary components of the depth sensor are a Polaroid ultrasonic transducer and a Texas Instrument ranging module. Together they ‘ranged' a target by bouncing an ultrasonic wave, or series of pulses, off the surface and listening for the return echo. The instrument also contained a National Semiconductor solid sate temperature sensor temperature sensor to measure the ambient temperature because the speed of sound in air varies with the air temperature. In operation, the sensor would be mounted on a horizontal cross arm of a meteorological tower.
Area Notes
Unknown

Details

Markings
black lettering on grey label on top reads 'CSMAL [logo?]/ CAMPBELL SCIENTIFIC/ MANUFACTURING ALBERTA LTD./ SERIAL #1060'/ black lettering on white label on top reads '0001-0436/ [bar code] AES/ *5122-00082* 5122/ SONIC SNOW DEPTH SENSORS'/ black lettering on white label on top reads 'CS [logo]/ CAMPBELL SCIENTIFIC/ (C)/ EXTENDED/ TEMP'
Missing
appears complete
Finish
brushed grey metal casing/ metallic temperature sensor with white synthetic mount/ white painted metal temperature sensor housing with black painted interior/ grey and black cable/ white synthetic and plated metal ranging unit
Decoration
N/A

CITE THIS OBJECT

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

Campbell Scientific (Canada) Corp., Sensor, snow, circa 1988–1990, Artifact no. 2004.0332, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/2004.0332.001/

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