The The Seaward RS3/05 resistance standard is constructed using carefully selected low temperature coefficient Manganin or Zeranin wire, depending on the value, mounted on formers which have a high mechanical stability. The wires are wound in a strain free manner and heat treated to remove any stresses. They are also artificially aged under the strictest control. The result is a standard of high quality with long term stability and permanence of calibration combined with a low temperature coefficient.
Seaward offers the widest range of standard values available today.
The RS305 also offers a high current carrying capability which makes them ideal for applications where precise current needs to be measured. This product has a resistance value of 0.05 ohms.
Features:
Resistance Value: 0.05 Ω
Uncertainty of Adjustment @20° C: 0.01%
Uncertainty of Certification: ± 50 ppm
Temp Coeff Typical 15 to 20° C: 10 ppm/° C
Stability of over 1 year: 0.001 %
Dissipation Max in Air Watts: 1
Dissipation Max in Oil Watts: 4
Max. I in Air (Amps): 4.5 A
Max. I in Oil (Amps): 9 A
Maximum Continuous Working Voltage: 70 dc /33 vrms