Dew Point Monitoring for Compressed Air Systems

Regulated industries such as food & beverage, pharmaceuticals, and electronics must prove that their compressed air systems meet ISO 8573-1 dew-point classes and FDA/GMP compressed-air quality guidelines. Continuous dew point monitoring with a dedicated sensor or transmitter supplies the audit-ready data inspectors demand and helps you avoid costly non-compliance.

Below are four ready-to-install dew point monitoring solutions for compressed air systems—from an affordable refrigeration-dryer transmitter to an explosion-proof sensor for Zone 1 hazardous areas. Each bundle delivers real-time compressed-air dew-point data so you can verify dryer performance, prevent condensation, and maintain product quality.

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HD200 – Affordable Solution for Refrigeration Dryers

Made in the USA, the HD200 packs ±1 °C accuracy, a –60 °C … +100 °C measuring range, and a rugged 750 psi stainless-steel probe into a budget-friendly transmitter you can wall-mount next to any refrigeration dryer. A loop-powered 4-20 mA output and optional RS-232 let you stream dew-point data directly to a PLC or SCADA.

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FA 510 – No-Display Sensor for Refrigeration or Desiccant Dryers

The compact FA 510 is ideal when panel space is limited or local readout isn’t required. Choose the refrigeration-dryer version (–4 °F … 122 °Ftd) or the desiccant-dryer version (–112 °F … 68 °Ftd). Both provide a fast-responding, condensation-resistant sensor with 4-20 mA and Modbus-RTU outputs for seamless integration.

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FA 500 – Sensor with Integrated Display

Need local indication and alarms? The FA 500 adds a bright front-panel display, keypad navigation, and a configurable relay while retaining the FA 510’s wide measuring range (–112 °F … 122 °Ftd), 4-20 mA, and Modbus-RTU outputs. A special model is pressure-tight up to 7 251 psi for high-pressure skids.

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FA 515 Ex – Intrinsically Safe / Explosion-Proof Sensor

For hazardous areas, the FA 515 Ex carries ATEX Zone 1 (gas) and Zone 21 (dust) approvals while matching the FA 510’s performance. Its stainless-steel housing, IP 65 ingress rating, and 4-20 mA two-wire loop make it the preferred dew point transmitter for offshore platforms, chemical plants, and any site where an ignition source is unacceptable.