Dataforth expands isolated analog signal-conditioner lineup

-- Test & Measurement World, 7/23/2008 9:42:00 AM

Dataforth adds a 2-wire transmitter interface module to its SensorLex 8B family of miniature isolated analog signal conditioners. Designed specifically to provide isolation for non-isolated 2-wire transmitters, each 8B42 module supplies power to a current transmitter, then isolates, filters, and amplifies the resulting process current input signal and provides an analog voltage output. To ensure accuracy, current-to-voltage conversion takes place internally in the module.

Signal filtering in the 8B42 is accomplished with a 3-pole low-pass filter optimized for time and frequency response. Other key features include ±0.05 percent accuracy (typical), ±0.02 percent linearity, 1500-V RMS transformer isolation, up to 40-V RMS field-side protection, and ANSI/IEEE C37.90.1 transient protection. Operating and storage temperature for the 8B is from –40°C to +85°C, and relative humidity range is 0 to 95 percent noncondensing. All models are CE-compliant and meet the requirements of EN61000-6-4 (radiated/conducted emissions) and EN61000-6-2 (ESD/RF/EFT immunity).

The small size of the 8B makes it suitable for embedded or portable applications, such as mobile test stands, COTS military and defense applications, miniaturized security and surveillance systems, and embedded process controls for semiconductor manufacturing equipment. Modules are designed for installation in Class I, Division 2 hazardous locations and are fully encapsulated.