The PhyMetrix PLMa loop powered dew point transmitter has a wide loop voltage range of 5VDC to 28VDC, providing exceptional flexibility for integration into various control systems. The PLMa includes built-in self-test and diagnostics, temperature compensation, and digital I/O for controlling relays. It is also HART interface compliant, enabling digital communication over the 4-20mA loop.

The transmitter features a dew point sensor covering -110 to 20°C with 316 Stainless Steel and PTFE wetted parts for excellent chemical compatibility. Process interface options include 3/4″-16 threads with Viton O-ring as well as 1/4″ NPT threads. The robust industrial M12 connector provides IP68 protection, and the stainless steel IP68 housing ensures reliable operation in harsh environments.

The PLMa displays engineering units including °C and °F dewpoint, ppmV, ppmW, µB H₂O vapor pressure, grams of H₂O per cubic meter, and Lbs H₂O per 10⁶ standard cubic feet in Natural Gas. It interfaces to a variety of PhyMetrix panel meters including DD4 and DD5. Protection from reversed polarity prevents damage during installation. NIST traceable calibration ensures measurement accuracy.

Key Features

• Dew point range: -110 to 20°C (-166 to 68°F)
• Wide loop voltage: 5VDC to 28VDC
• 4/20 mA loop powered output
• HART interface compliant
• 316 Stainless Steel & PTFE wetted parts
• 3/4″-16 and 1/4″ NPT process threads
• Stainless Steel IP68 housing with M12 connector
• Built-in digital I/O for controlling relays
• Built-in temperature compensation
• Built-in self-test and diagnostics
• Multiple engineering units including Natural Gas units
• Interfaces to PhyMetrix DD4/DD5 panel meters
• Protection from reversed polarity
• NIST traceable calibration

Applications

• Natural gas processing
• Industrial gas monitoring
• Compressed air systems
• HART-enabled control systems
• Remote monitoring installations