The NOSHOK 820/821 Series Temperature Indicator is a field-reprogrammable digital thermometer designed as a direct replacement for bimetal, liquid bulb, and glass thermometers in demanding industrial environments. It combines a programmable 4-20mA linearized output with the reliability of all 316 stainless steel construction.

The indicator achieves ≤0.22% FS accuracy (≤0.1% FS optional) over temperature ranges from -50 to 400°F (-45 to 204°C). A self-calibration feature ensures accurate and stable performance, while the optional PC interface module and software allow easy field reprogramming. The software includes a security feature to prevent accidental re-programming, ensuring configuration integrity.

With IP65/NEMA 4 rated environmental protection, the 820/821 Series withstands moisture and dust in harsh industrial settings. Its versatility makes it suitable for a wide range of applications including pharmaceutical, food preparation, utilities, refineries, chemical and petrochemical plants, paper mills, and hydraulics. The robust 316SS construction ensures long-term reliability in corrosive environments.