Four-terminal standard resistors forlow values of 0.1 Ω or less. These standards are used for accurate current measurements and for comparisons of low resistances. At the base and at the upper fl ange there are openings which allow air to circulate or oil to fl ow through when used in an oil bath.
• Calibration standard
• Reference measuring point in
measurement circuit
• Reference resistor in bridge circuit
• Shunt
• Maximum 200 A current in oil
Resistance Elements: 0.1 Ω, bifi lar wind
ing on cylindrical brass formers with PTFE
insulation. 0.01, 0.001, and 0.0001 ohm
resistance material in the form of straight
rods or loops supported on 12 mm brass
conductors
Terminals: Potential - Copper 4 mm
Current - Brass
Top Panel: Bakelite marked with the value,
class designation and serial number
Case: Light alloy, black anodized to give maxi
mum heat radiation
Thermometer Tube: Slotted extending the length
of the resistance element
Label: Each standard is fi tted with a label that
describes its characteristics and operating pa
rameters
Dimensions: 16 cm H x 9 cm Dia (6.3” x 3.55”)
Weight: 0.9 kg (2 lbs)