The temperature measurement is made with a DS-2438Z. The device is not calibrated, but empirical data shows it to be accurate within a few degrees of actual, with an operating range of –40 to +85 degrees C. Because the sensing device is partially enclosed and mounted to the PCB, the response time to temperature changes will relatively slow. Care should be taken not to place the sensor in direct sunlight, as the radiant heat will be partially trapped inside the enclosure and cause readings higher than ambient.
In addition to temperature measurement, the MS-TC will measure AC current in the range of 0 to 20 amps. While not calibrated, empirical data indicates a typical accuracy of +/-3% of reading. The response curve, established at 23 degrees C, is linear from .2 VDC (1 amp.) to 3.78 VDC (20 amps.). The zero current reading is .09 VDC. When used with a Link45 or Link12, the output will be voltage as stated above.
When used with a LinkTH, the output will be a 3 digit reading from 1.00 to 20.0. Regardless of the Link model used, readings below 1 ampere and above 20 amperes are not specified.
The sensing device used is a clamp-on current transformer. Dimensions are: 1.04"H x 1.04"W x 1.58"H. The "window" or aperture is .40" in diameter. The box containing the electronics is shipped with 3 feet of 18-gauge wire extending from it. It is up to the user to add or trim wire as desired and to make the final connection to the current transformer.