9210A Series

9210A-1 (PRIMARY)

1 Ω Resistor with Carrying Case

  • Replacement for Thomas 1 Ω
  • Temperature Coefficient < 0.05 × 10-6/°C
  • Long Term Drift < 0.2 × 10-6/Year
  • No Pressure Coefficient
  • Maximum Dissipation 100 mW
  • Highest Performance Dissipation 10 mW

9210A-0.1 (PRIMARY)

0.1 Ω Resistor with Carrying Case

  • Temperature Coefficient < 0.05 × 10-6/°C
  • Long Term Drift < 0.2 × 10-6/Year
  • No Pressure Coefficient
  • Maximum Dissipation 100 mW
  • Highest Performance Dissipation 10 mW
Features & Benefits

The model 9210A MI-Type standard has been developed through years of research by NRCC and Measurements International and is now offered as an improved resistor design to replace the L&N Thomas-Type One-Ohm Standard as well as other values. These improvements have been achieved through a new annealing process of the element and changes in the structural mounting. Historical data is now proving the model 9210A to be the most stable oil-filled resistor commercially available.

The model 9210A features a long term drift rate less than 0.2 ppm per year and a temperature coefficient of less than 0.05 ppm/°C.

Specifications
Model Nominal
Value
Ohms		 Tolerance
± ppm 		First Year
Drift (ppm)		 Stability
12 Month
(ppm) 		Max
Current (A)		 TC at
25 °C ± 1 °C
(ppm/°C)		 Maximum
Voltage
9210A/0.1 0.1 < 10 ppm 1 0.2 1 0.05 0.1
9210A/1 1 < 10 ppm 1 0.2 0.1 0.05 0.1

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