General Information

Serial #

330094

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

METAL CASING/ GLASS/ SYNTHETIC PARTS

Dimensions

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

Length

N/A

Width

N/A

Height

N/A

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Energy-electric

Category

Measurement

Sub-Category

N/A

Manufacturer

AKA

ISARIA

Country

England

State/Province

Unknown

City

London

Context

Country

Unknown

State/Province

Unknown

Period

Unknown

Canada

THIS ONE WAS KEPT AT DEPT. OF TRADE & COMMERCE, STANDARDS BRANCH, IN OTTAWA AS PART OF ITS LEGAL OBLIGATIONS TO TEST & MAINTAIN EXAMPLES OF METERS SOLD COMMERCIALLY IN CANADA./ ALSO TO DETERMINE THE STANDARD FOR THIS PARTICULAR MODEL OF WATT-HOUR METER.

Function

Unknown

Technical

USED BY ELECTRIC COMPANY TO MONITOR AMOUNT OF ELECTRICITY USED FOR BILLING PURPOSES. AS SUCH, IT WAS OFTEN PLACED OUTSIDE THE HOME OR IN BASEMENT. CONSEQUENTLY,ACCURACY OF SUCH INSTRUMENTS, WHILE SUFFICIENTLY HIGH FOR THE PURPOSE, IS NOT SO IMPORTANT A FACTOR AS PERHAPS SOME OTHER QUALITIES; SUCH AS RUGGEDNESS, READABILITY, AND LOW COST. THE INDUCTION WATTHOUR METER IS SIMPLE IN ITS STRUCTURAL ASSEMBLY. THIS INSTRUMENT IS ACCURATE OVER A WIDE RANGE OF LOAD, POWER FACTOR, VOLTAGE, FREQUENCY, AND TEMPERATURE. THE ONLY DRAWBACK OF THIS INSTRUMENT IS THAT, AS IT RELIES ON INDUCTION, IT CANNOT BE USED IN DIRECT CURRENT CIRCUITS. IT IS, HOWEVER, THE LEADING CHOICE FOR ALTERNATING CURRENT CIRCUITS. IT IS SIMPLER, COSTS LESS, AND REQUIRES LESS MAINTENANCE THEN BOTH COMMUTATOR WATTHOUR METERS AND MERCURY WATTHOUR METERS.

Area Notes

Unknown

Details

Markings

MFR'S PLATE READING 'ISARIA METER NO. 330094, TYPE J/ VOLTS 100, Amps 16, 60 CYCLES' & 'MADE IN BAVARIA/ Isaria Ltd. London'/ IMPRESSION PRINTED LABEL READING 'S243'

Missing

MISSING PROTECTIVE PLATE FOR SOCKETS

Finish

BLACK ENAMEL PAINTED CASING/ WHITE DIAL/ BLACK SYNTHETIC

Decoration

N/A