Thermograph
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1987.0649.001
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- OBJECT TYPE
- MERCURY-IN-STEEL/REMOTE SENSING/EARTH OR WATER
- DATE
- Unknown
- ARTIFACT NUMBER
- 1987.0649.001
- MANUFACTURER
- Negretti & Zambra
- MODEL
- Unknown
- LOCATION
- London, England
More Information
General Information
- Serial #
- T/27665
- Part Number
- 1
- Total Parts
- 1
- AKA
- N/A
- Patents
- N/A
- General Description
- CAST IRON BASE/ METAL COVER WITH ONE END AND FRONT GLAZED/ METAL MECHANISM, PARTS/ LEAD SHEATHED SENSOR TUBES
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 38.2 cm
- Width
- 19.1 cm
- Height
- 25.8 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Meteorology
- Category
- Atmospheric temperature measurement
- Sub-Category
- N/A
Manufacturer
- AKA
- Negretti Zambra
- Country
- England
- State/Province
- Unknown
- City
- London
Context
- Country
- Canada
- State/Province
- Unknown
- Period
- Unknown
- Canada
-
AN ENGLISH MADE RECORDER POSSIBLY USED BY THE CANADIAN METEOROLOGICL SERVICE, BUT NOT AS A STANDARD OBSERVING NETWORK INSTRUMENT. THE MERCURY-IN-STEEL THERMOGRAPH IS ONE OF THE MOST ACCURATE & DURABLE METEOROLOGICAL RECORDING THERMOMETERS BUT DOES NOT FUNCTION ATTEMPERATURES BELOW THE FREEZING POINT OF MERCURY (-38 DEGREES F.). - Function
-
AN INSTRUMENT USED TO MEASURE TEMPERATURE AT REMOTE LOCATIONS BY MEANS OF ITS EFFECT ON A LIQUID (E.G. MERCURY) FILLED SENSOR BULB & CAPILLARY TUBE, WHICH ARE CONNECTED TO & ACTUATE A BOURDON TUBE, WHICH IN TURN ACTIVATES THE RECORDER'S PEN MECHANISM. THE 2ND SENSOR & PEN ALLOW IT TO ACT AS A RECORDING PSYCHROMETER. - Technical
-
A LIQUID-IN-METAL RECORDER IN WHICH A SENSING BULB IS CONNECTED TO A BOURDON TUBE BY CAPILLARY TUBING, ALL MADE OF STEEL & MERCURY FILLED; A TEMPERATURE CHANGE AT THE BULB CAUSES A CHANGE IN INTERNAL PRESSURE WHICH AFFECTS THE BOURDON TUBE & THE LATTER ACTUATES THE PEN MECHANISM. - Area Notes
-
Unknown
Details
- Markings
- Interior plate reading 'MADE IN ENGLAND/ TEMPERATURE RECORDER/ PATENT NOS. 374,518/ 167,000/ RANGE -40/ +120oF/ NO.T/ 27665'/ plate on front reading 'NEGRETTI & ZAMBRA/TRADEMARK/LONDON' & 'Made for/ Instruments Ltd./ Ottawa & Toronto/British Make'.
- Missing
- ONE PEN & ARM, TWO INK BOTTLES From CA of 10/29/1993 by Tony Missio: Yes - missing one pen arm
- Finish
- BLACK PAINTED CASING, MECHANISM, SENSOR TUBES/ METALLIC DRUM, PEN ARM, CABLES/ BRASS COLOURED HANDLE
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Negretti & Zambra, Thermograph, Unknown Date, Artifact no. 1987.0649, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/1987.0649.001/
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