The Model 657-1 relative humidity and temperature transmitter includes two 2-wire circuits to simultaneously produce separate 4-20 mA output signals for relative humidity from 0-100% and temperature from 32 to 212F. Accuracy for humidity is ±2% from 10-90% and for temperature it is ±1F over the full range. The control operates both channels from a single 10-35V dc power supply wired into the relative-humidity current loop. The probe included with the transmitter features an integrated, polymer film, and a relative-humidity sensor plus a separate thin-film platinum sensor for temperature measurement.
Dwyer Instruments Inc., Box 373, Michigan City, IN 46361, FAX (219) 872-9057.
Most of the new 3D printers and 3D printing technologies in this crop are breaking some boundaries, whether it's build volume-per-dollar ratios, multimaterials printing techniques, or new materials types.
Independent science safety company Underwriters Laboratories is providing new guidance for manufacturers about how to follow the latest IEC standards for implementing safety features in programmable logic controllers.
Automakers are adding greater digital capabilities to their design and engineering activities to promote collaboration among staff and suppliers, input consumer feedback, shorten product development cycles, and meet evolving end-use needs.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.