GE mercury condensation pump for DuFour type cathode-ray oscillograph
date: label: date made
content: ca 1929
name: label: maker
content: General Electric Company
notes: label: Description (Brief)
content: General Electric mercury condensation pump D195B73. Label reads: "Mercury Condensation / Pump / Volts 110 Casing type D195 B73 / Total Watts 365 Pump [Type] D101 B73 / Heating Element [type] B158 B159 B73 / Volts per pump [blank] Backing up pressure must not exceed .3" / Watts [per pump blank] Mercury [per pump] 80.c.c. Cooling water max temp 40o C / Caution / Oil is detrimental to pump / Incandescent Lamp Depart. / of / General Electric Co. / Made in U.S.A." The donor reported this is "the mercury diffusion pump, of a
label: Description (Brief)
content: metal rather than glass type," used with the DuFour cathode-ray oscillograph.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.317301.03
label: catalog number
content: 317301.03
label: accession number
content: 230388
objectType: label: Object Name
content: Vacuum Pump
physicalDescription: label: Measurements
content: overall: 23 1/2 in x 6 1/2 in x 8 in; 59.69 cm x 16.51 cm x 20.32 cm