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New RTD Signal Conditioners With USB Configuration Launch Low-Cost Temperature Transmitter Series

WIXOM, Mich. Jan. 18, 2011 temperature transmitters RTD signal conditioner signal conditioning $89

Don Lupo

Despite their tiny size and economical price tag, ST131 transmitters are full-featured. These transmitters provide sensor excitation and perform advanced signal linearization, lead-wire compensation, and sensor fault detection functions. Units can also support any 100 ohm Pt RTD sensor (alpha = 375-393) or 0-900 ohm input. Designed for harsh environments, the unit’s ASIC exhibits very low drift across wide ambient temperatures and is highly resistant to RFI, EMI, ESD, and EFT effects. Simultaneous differential sampling and auto-zero techniques yield further accuracy improvements. Another benefit, the output is non-polarized and reverse polarity protected. Factory calibration is also available.

A variety of options add greater flexibility. Programmable over/under range and fault/alarm levels enable identification of a "runaway" process or broken sensor. Selectable up/downscale failsafe modes ensure a safe, predictable shutdown with a NAMUR-compliant fault response.

For easy installation, Acromag sells a variety of mounting and wiring accessories. A USB-to-USB isolator protects equipment from ground loops, electrical noise, and surges during configuration. For convenience, a kit supplies the software, isolator, and USB interface cables. Numerous connection head enclosures are also available through Acromag. Select from stainless steel, aluminum, and cast iron housings with explosion-proof or general-purpose ratings. A DIN rail adapter adds more mounting options.

About Acromag

Detroit, Michigan

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