Factories can now easily, and very accurately, measure and transmit industrial temperatures with the Novato (MAXREFDES16#) reference design, a 4–20mA loop-powered
temperature transmitter with the HART® communication protocol from Maxim Integrated Products, Inc.
Temperature is among the most widely measured parameters in industrial process control and automation applications. The Novato reference design transmits temperature measurements from remote sensors to the central control unit over a 4–20mA current-loop using the highway addressable remote transducer (HART) communication protocol. This smart transmitter enables low-power temperature measurement from -200 °C to +850 °C with accuracy better than ±0.1% or ±1.0 °C. Novato’s flexible design supports 2-, 3-, or 4-wire resistance temperature detector (RTD) sensor inputs and works with any type of RTDs, from PT100 to PT1000, making it ideal for a wide variety of industrial applications.
• High accuracy: measures temperature from -200°C to +850°C with accuracy better than ±0.1% or ±1.0°C
• Flexibility: supports a 2-, 3-, or 4-wire RTD sensor input; PT100 to PT1000 RTDs
• Low power: consumes less than 3.2mA
• HART Communication Protocol: the HART functions set is developed by AB Tech Solution, Westford, MA, an engineering firm specialized in product development services for industrial automation applications. The HART stack for Novato runs on the Renesas® RL78/G13 microcontroller and supports all universal and common practice commands.