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Milliohmmeter 4 Terminal Test Standards MTS
two models designed for the simple, easy and precise calibration of all digital low resistance ohmmeters and traditional Kelvin/Thompson bridges.
The Milliohmmeter Test Standards are designed for the simple and easy calibration of low resistance ohmmeters and Kelvin / Thomson bridges. The true four terminal resistance values are switch selected and provision is made for + and - full scale values. A four terminal zero value may also be selected, thus making zero and full scale calibration of instruments simplicity itself. Two models are available, the MTS1A which has 11 values from 1 mohm to 100 Kohm and the MTS2 which has 10 values from 400 micro-ohm to 400 Kohm, making it ideally suited for the calibration of digital instruments with a long scale length of 4000 or 6000 count.
The Test Standards are housed in a rugged bench portable aluminium case with tilt handle. The internal standards are manufactured from premium quality resistance wire with low temperature and load coefficient. For the selection of the standards, a special switch of our own construction is used ensuring a long and trouble free operating life. The units are supplied complete with a calibration certificate.
| Resistance Value (Ohms ) | Uncertainty of adjustment at 20° C | Dissipation Max Watts | Current Max A | Typical Temp. Coeff. 15 to 20°C |
| 100KOhms | ± 0.01% | 0.1 | 1 mA | <10 ppm |
| 10k Ohm | ± 0.01% | 0.1 | 3 mA | <10 ppm |
| 1k Ohm | ± 0.01% | 0.6 | 25 mA | <10 ppm |
| 100 Ohm | ± 0.01% | 0.6 | 75 mA | <10 ppm |
| 19 Ohm | ± 0.01% | 0.43 | 150 mA | <10 ppm |
| 10 Ohm | ± 0.01% | 0.45 | 212 mA | <10 ppm |
| 1.9 Ohm | ± 0.01% | 0.475 | 500 mA | <10 ppm |
| 1 Ohm | ± 0.01% | 0.56 | 750 mA | <10 ppm |
| 100 milliohm | ± 0.01% | 0.625 | 2.5 A | <10 ppm |
| 10 milliohm | ± 0.05% | 0.25 | 5 A | <10 ppm |
| 1 milliohm | ± 0.05% | 0.1 | 10 A | <10 ppm |
| Resistance Value (Ohms) | Uncertainty of adjustment at 20 deg C | Dissipation Max Watts | Current Max A | Typical Temp. Coeff. 15 to 20 deg C |
| 400 kOhm | ± 0.01% | 0.1 | 0.45 mA | <10 ppm |
| 40 kOhm | ± 0.01% | 0.1 | 1.5 mA | <10 ppm |
| 4 kOhm | ± 0.01% | 0.1 | 5 mA | <10 ppm |
