Certified models for general purposes or ATEX, UKCA, IECEx, cQPSus, TR CU & Ex for hazardous areas. Meets the requirements of IEC 61508 (SIL 2 Capable) Available changes: 0...0.5% up to 0...50% & 20, 80 or 90...100% The touchscreen allows for calibration or adjustment without the need for a hot work permit. The intrinsic error (precision) is better than 1% of full scale. Stability of the range at 0.25% of the range per month. The results include RS485 and two 4...20 mA (following the NAMUR NE 44 standard). Low cost of ownership due to minimal maintenance and absence of consumable parts.