The Michell Instruments SF82 Dew Point Transmitter is designed for control of dew point and moisture content in compressed air dryers to maximize energy efficiency. The SF82 is capable of providing fast, accurate dew-point measurements down to -60°C (-76°F) dew point.

The SF82 uses proven thick film measurement technology coupled with sophisticated microcontroller electronics to provide accurate and stable measurement across the transmitter lifespan. It is available with a range of process connections and electrical connectors for easy installation. The M12 5-pin connector version enables the SF82 to output 4 to 20mA and Modbus RTU over RS485 outputs, providing flexibility for integration into various control systems.

Constructed with a 316 stainless steel housing and rated for pressures up to 450 barg, the SF82 is built for reliable operation in demanding industrial environments. Its fast response times ensure timely moisture detection for optimal dryer control and energy efficiency.

Key Features

• Dew point range: -60 to 60°C (-76 to 140°F)
• Accuracy: ±2°C (±3.6°F)
• Pressure rating: 450 barg (6526.7 psig)
• Response time: 63% at room temperature at 1 bara: -60 to -20°C: 6s, -20 to -60°C: 40s
• 316 stainless steel housing
• 4-20mA and Modbus RTU over RS485 outputs (M12 version)
• Range of process connections and electrical connectors
• Proven thick film measurement technology
• Sophisticated microcontroller electronics

Applications

• Refrigeration dryers
• Membrane dryers
• Adsorption dryers
• Medical and surgical air
• Breathing air
• Additive manufacturing
• Plastic injection molding
• Portable dew point checkers