Analog signal conditioners: New transmitter interface modules
-- Control Engineering, 7/8/2008
Tucson, AZ – Modules provide power; isolate, filter, and amplify the input signal; and deliver an analog voltage output. Dataforth Corp. has released the 8B42 2-wire transmitter interface modules; the latest addition to its miniature SensorLex 8B isolated analog signal conditioners. |
| Dataforth Corp. has released the 8B42 2-wire transmitter interface modules. |
Designed to provide isolation for non-isolated 2-wire transmitters, each module supplies power to a current transmitter, then isolates, filters, and amplifies the resulting process current input signal and provides an analog voltage output. Current-to-voltage conversion takes place internally in the module. Signal filtering is accomplished with a 3-pole low-pass filter optimized for time and frequency response.
Features include ±0.05% accuracy; ±0.02% linearity; 1,500 V rms transformer isolation and up to 40 V rms field-side protection; ANSI / IEEE C37.90.1 transient protection; 5 V power (30 mA typical); +12 V dc loop supply; high-level voltage outputs; low output noise; low drift with ambient temperature; -40 °C to +85 °C operating temperature.
8B42 ensures fully functional Instrument Class performance in a miniature package (1.11-in. x 1.65-in. x 0.40-in.). The small size makes the 8B 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, designed for installation in Class I, Division 2 hazardous locations, are fully encapsulated with a high level of immunity to environmental noise. Operation and storage temperature is -40 degrees C to +85 deg C, and relative humidity range is zero to 95% noncondensing. All models are CE compliant and meet requirements of EN61000-6-4 (radiated/conducted emissions) and EN61000-6-2 (ESD/RF/EFT immunity). Approvals are pending for operation in hazardous environments, North American Class I, Division 2, and European Group II, Category 3.
Housed in a solid, potted thermoplastic plug-in-the-panel package with flammability rating of UL-94 V-0, the 8B family of isolated signal conditioners protects user equipment, while reducing electrical noise and enabling system expansion and repair. Modules offer dimensional stability over temperature and chemical resistance, plus stability over time. They do not require recalibration.
– Control Engineering News Desk
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