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The model 4310HR is a newly re-designed six-element resistance standard that is the latest development from Measurements International’s series of DC resistors and shunts. After many years of research in resistance materials, the model 4310HR insures that you get the best performance on the market today. Combined with MI’s experience in automated high-value resistance measurements, the 4310HR is used as a temperature-controlled, 6-element working resistance reference.
With complete focus on re-design for improvement of specification, the 4310HR utilizes the proven delta-wye network for unmatched accuracy and precision. Special consideration is taken into the selection of every element used to ensure that it meets the specification and performance you expect from an MI product.
The six-resistance elements cover the range from 10 MΩ to 100 TΩ and are maintained at 30 °C, with an operating environment temperature range of 23 °C ± 5 °C. The elements feature excellent stability and extremely low temperature coefficients housed in a single unit. Each resistor is accessible from the Teflon back panel with all connections being made via N-type connectors. The model 4310HR can be mounted in any standard 19-inch instrument rack.
Based on the highly accurate 9331H series (released in 2013) of resistance standards, combined with the release of the dual source bridge technology and replacing older methods of measurement, customers required a higher level of resistance standard than previous methods from the range of 10 M to 100 T. Hence, the release of the 9331H series of delta-wye configuration and now the release of the new and improved, re-designed 4310HR!
| Nominal Resistance (Ohms) |
Nominal Resistance Tolerance (± ppm)1 |
12 Month Stability (± ppm) |
Max Current (100 mW) |
Temperature Coefficient (± ppm/°C)2 |
Voltage Coefficient3 |
| 100 MΩ | 100 | 20 | 10 µA | 1 | 1 kV (1 ppm/V) |
| 1 GΩ | 200 | 40 | 1 µA | 2 | 1 kV (1 ppm/V) |
| 10 GΩ | 500 | 100 | 100 nA | 2 | 1 kV (5 ppm/V) |
| 100 GΩ | 1000 | 200 | 10 nA | 10 | 1 kV (5 ppm/V) |
| 1 TΩ | 2500 | 500 | 1 nA | 15 | 1 kV (5 ppm/V) |
| 10 TΩ | 5000 | 1000 | 100 pA | 25 | 1 kV (5 ppm/V) |
| Enclosure Stability | < ± 0.01 °C Over a 1 Year Period | ||||
| Operating Temperature | 23 °C ± 5 °C | ||||
| Ambient Humidity Range | 20 to 50 % RH Non-condensing | ||||
| Connectors | N-Type Female | ||||
| Rack Mount Kit | Included | ||||
| Storage Temperature | -23 °C to 60 °C, 90 % RH Non-condensing | ||||
| Warranty | Standard 1 Year Parts & Labour | ||||
Note 1: Accuracy over the life of the resistor when used and handled in accordance with 4310HR User Manual.
Note 2: Temperature Coefficient: Temperature coefficient shall be applied the resistance standard is outside the normal 23 °C ± 5 °C.
Note 3: Voltage Gradient: Voltage coefficient shall apply to a voltage that the resistance standard is not calibrated up to its maximum allowable voltage.
