This sensor measures temperature using a DS-2438Z with an operating range of -40°C to +85°C. It is not calibrated, but empirical data proves it to be accurate within a few degrees of actual temperature. The sensing device is partially enclosed and mounted to the PCB, so the time to respond to temperature change will be relatively slow. The sensor should not be placed in direct sunlight, as the radiant heat will become trapped inside the enclosure and will cause higher readings.
MultiSensors, like all 1-Wire® slaves, can operate on parasitic power, meaning that it can use power contained in data signals of the 1-Wire® buses, as well as a capacitor to keep them running during the zeros. Unlike most other 1-Wire® products, MultiSensors have an AUX jumper that connects the Vcc line on the sensor directly to the power source of the serial port using the master Link. This provides a constant Vcc to the sensor no matter what the line signal is doing. The AUX jumper is set to provide Vcc when shipped from the factory.
For more information on this product and its functions, please refer to the MultiSensor manual.
For a walk-though of how to operate this product, please visit our How-To: MS-T page.