Psychrometer-Slide-Charts

Supported Applications

The Dwyer Model A-525 Sling Psychrometer is a pocket-type instrument designed to measure relative humidity. The device determines this value by measuring dry bulb and wet bulb temperatures.

Operating Conditions & Performance

No specific technical specifications regarding measurement ranges, accuracy classes, response times, or environmental ratings are provided in the available documentation for this series. The product overview notes that the instrument operates by wetting a wick with distilled water on one thermometer leg to measure wet bulb temperature, while the other leg measures dry bulb temperature.

Configuration Options

The Model A-525 includes specific accessories and components as part of its configuration:

• A psychrometric slide chart (A-530) is included to eliminate the need for graphs when calculating relative humidity.
• A carrying case is provided with the instrument.

Key Product Differences

The series documentation identifies specific replacement parts and accessories available for the Model A-525:

• A-527: Replacement Wick for Psychrometer
• A-530: Psychrometric Slide Chart