A USB connection to a Windows PC or Android device enables simple, precise configuration of I/O ranges and a variety of operational settings with free software. The two-wire instruments include plug-in terminal blocks to install quickly, can acquire power from either output loop, and support sink or source output connections. A ruggedized design operates reliably from -40 to 80 °C with high immunity to electrical noise and surge protection. UL/cUL Class 1 Division 2, ATEX Zone 2 and IECex hazardous location approvals are pending, and all units can withstand 25 g shock and 4 g vibration.. Software menus allow quick setting of I/O ranges and select options DIP switches cannot support. Each output can use a different input scaling range. Output clamp levels are user-configurable for custom or NAMUR-compliant values to identify fault conditions. Temperature input models add selectable upscale/downscale sensor break detection. Plus, a very low 7V burden allows use in existing loops without adding power. Current units are adjustable to support ±20 mA or 0-20 mA DC inputs and 0-20 A AC signals with a toroid sensor. Voltage models convert unipolar or bipolar signals from ±1 V to ±150 VDC with multiple selectable ranges. Thermocouple units accept eight different sensor types (J, K, T, R, S, E, B, N), as well as ±100 mV inputs.
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