A technical trend of the temperature display and controller area is preceeding to accommodate multiple sensor inputs. A new multi-sensor amplifier is proposed. It is simple, reliable, and economic. The circuit can amplify PT, K, R and humidity sensor ...
A technical trend of the temperature display and controller area is preceeding to accommodate multiple sensor inputs. A new multi-sensor amplifier is proposed. It is simple, reliable, and economic. The circuit can amplify PT, K, R and humidity sensor signals, and also amplify voltage and current signals. The A/D converter using Σ-Δ technology is used in the new system design. Using this converter, the measuring system can be made as low cost with high resolution. The performance of the multi-sensor amplifier circuit is proven by the Pspice simulation.