Gas Sensor | EVAL-CN0396-ARDZ

Reference Design: Dual Electrochemical Gas Sensor with Temperature Compensation

The EVAL-CN0396-ARDZ is a portable gas detector that uses a 4-electrode electrochemical sensor for simultaneous detection of two distinct gases. It offers many advantages for instruments that detect or measure the concentration of many toxic gases, that includes an optimum combination of components designed to provide single-supply, low power, and low noise performance, while offering a high degree of programmability to accommodate a variety of sensors for different types of gases.

Block Diagram:

Features:

• Dual electrochemical gas sensor

• Temperature compensation

• 16-bit digitization

Applications:

• Industrial Automation Technology (IAT)

• Temperature Controllers

• Healthcare

• Life Sciences & Medical Instrumentation

• Instrumentation & Measurement

• Chemical Analysis & Analytical Instruments

• Portable instrumentation

• Electronic Test & Measurement

Functional Setup

The following equipment is needed:

• EVAL-CN0396-ARDZ circuit evaluation board

• EVAL-ADICUP360 development board

• USB-A to USB micro cable

• 7 V to 12 V power supply

• CN-0396 demo software (see the CN-0396 User Guide)

• Serial terminal software (PuTTY, Tera Term, or similar)

• 4-electrode electrochemical gas sensor (CO and H2S sensor is provided with the evaluation board)

• Environmental chamber

• Calibration gases

• Precision current source (alternative to actual sensor and gases)

Related ADI parts:

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• ADA4528-1: Precision, Ultralow Noise, RRIO, Zero-Drift Single Op Amp

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• AD5270: 1024-Position, 1% Resistor Tolerance Error, SPI Interface and 50-TP Memory Digital Rheostat

• ADT7310: ±0.5°C Accurate, 16-Bit Digital SPI Temperature Sensor

• ADP7102: 20 V, 300 mA, Low Noise, CMOS LDO

• ADR3412: Micro-Power, High-Accuracy 1.2V Voltage Reference