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Value: 25Ω
Uncertainty of Adjustment @20°C: 0.005%
Uncertainty of Certification: ±25ppm
Temp Coeff Typical 15 to 20°C: 10ppm/°C
Stability Over 1 Year: 0.001%
Dissipation Max in Air Watts: 1
Dissipation Max in Oil Watts: 10
Max. DC Current in Air: 200mA
Max. DC Current in Oil: 600mA
Maximum Operating Voltage: 60VDC, 30Vrms
Terminals
Potential: Gold plated copper 4mm
Current: Nickel
General Specifications:
Dimensions: 160mm (h) x 90mm (diameter) / 6.3 x 3.5” approx
Mass: 0.9kg approx / 2lbs
Case:
Light alloy, black anodised to give maximum heat radiation
Thermometer Tube: Slotted extending the length of the resistance element
Top Panel: Bakelite marked with the value, class designation and serial number
Label: Each standard is fitted with a label that describes its characteristic and operating parameters
Resistance Elemants: Manganin or Zeranin depending on the value. 100 ohm, 1, 10 and 100 kilo ohm low inductance winding on brass formers with PTFE insulation. 0.1, 1 and 10 ohm bifilar winding 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 12mm brass conductors
