Developed & designed by metrologists for metrologists & calibration technicians
Transform your resistance standards calibration with Measurements International’s (MI) latest innovation – the Automated Resistance Standard model 1310A. This user-friendly, cost-effective solution provides military organizations, national and third-party labs with unparalleled accuracy and confidence in their resistance standards.
Designed with input from a world-renowned National Measurement Institute, the model 1310A delivers exceptional results, making it the go-to choice for organizations looking to take their calibration to the next level. Upgrade your calibration process today and trust in the precision and reliability of MI’s Automated Resistance Standard
| Feature | Benefit |
| 9 resistors 1 Ω, 10 Ω, 100 Ω, 1 kΩ, 10 kΩ, 100 kΩ, 1 MΩ, 10 MΩ, 100 MΩ, 1 external channel. | Complete line of decade value standards in one temperature-controlled enclosure. |
| Hand-picked high precision resistors in temperature-controlled chamber. |
Delivers highest level of performance from the internal high precision resistors. |
| Internal resistance elements in a temperature-controlled chamber. | Excellent stability and extremely low-temperature coefficients. |
| Single output cable for direct plug-in. | Easy operation without requirement for changing wires. |
| Built for calibration of calibrators and DVMs. | Best stability < 2.5 μΩ/Ω/Year. |
| Built-in 4-terminal scanner. | Combining two instruments into one simple to use instrument. |
| External extra channel. | Connect to resistance value of your choice. |
| Front panel or GPIB controlled. | Simplifies operation for user. |
| Internally mounted temperature sensor PT100. | Users can connect to front panel and monitor internal oven. |

Figure 1. Drift of MI Resistor Over a 10 Year Period

Figure 2. 24-Hour Stability Testing Internal
Temperature Chamber
| Nominal Resistance (Ohms) |
Nominal Resistance (± μΩ/Ω) (± ppm) |
24 Hour Stability (± μΩ/Ω) (± ppm) |
12 Month Stability (± μΩ/Ω) (± ppm) |
Temperature Coefficient (± μΩ/Ω/°C) (± ppm/°C) |
Max. Voltage (Volts) |
|---|---|---|---|---|---|
| 100 MΩ | 50 | 0.4 | 10 | 0.025 | 100 |
| 10 MΩ | 35 | 0.25 | 10 | 0.025 | 100 |
| 1 MΩ | 25 | 0.03 | 2.5 | 0.02 | 100 |
| 100 kΩ | 15 | 0.02 | 2.5 | 0.01 | 100 |
| 10 kΩ | 10 | 0.01 | 2.5 | 0.005 | 32 |
| 1 kΩ | 10 | 0.01 | 2.5 | 0.005 | 10 |
| 100 Ω | 10 | 0.01 | 2.5 | 0.005 | 3.2 |
| 10 Ω | 10 | 0.01 | 2.5 | 0.005 | 1.0 |
| 1 Ω | 10 | 0.01 | 2.5 | 0.005 | 0.32 |
| Temperature Stability | ± 0.1 °C Over a 1 Year Period | ||||
| Ambient Temperature Range | 23 °C ± 5 °C | ||||
| Ambient Humidity Range | 20 to 70 % RH | ||||
| Warranty | Standard 2 Year Parts & Labour | ||||
Scanner Specifications
| Operation | Four-Terminal |
| Error Contribution | < 20 Nanovolts |
| Contact Configuration | Relay – Two Coil Latching |
| Max Carrying/Switching Current | 4/2 Amps @ < 30 Volt (DC) |
| Maximum Working/Switching Voltage | 1000/220 Volts @ < 100 mA (DC) |
| Contact Resistance | < 0.05 Ω |
| Expected Relay Life | 108 Operations |
| Insulation Resistance | > 1012 Ω |