Psychrometer °F vs PockeTech

Psychrometer °F is a psychrometric calculator for evaluating thermal comfort and moist-air conditions using U.S. customary units. Adjust temperature and humidity easily with the on-screen dials. Temperatures are color-coded for quick reference, and a “Good” indicator appears when conditions are between 68–82°F and 30–60% relative humidity. Choose from the following input combinations: • Dry-bulb temperature and relative humidity • Dry-bulb temperature and dew-point or frost-point temperature • Dry-bulb temperature and wet-bulb temperature The app displays or calculates: • Dry-Bulb Temperature (°F) • Wet-Bulb Temperature (°F) • Dew Point / Frost Point (°F) • Relative Humidity (%RH) • Humidity Ratio / Mixing Ratio (gr/lb) • Absolute Humidity (gr/ft³) • Enthalpy (Btu/lb) • Specific Volume (ft³/lb) • Atmospheric Pressure (inHg) • Vapor Pressure (inHg) • Saturation Vapor Pressure (inHg) Comfort Indices: • Heat Index based on the U.S. National Weather Service method • Simplified indoor WBGT based on dry- and wet-bulb temperatures • Discomfort Index (DI) The app also displays risk levels and easy-to-understand indicators for each selected index. Atmospheric Pressure: Choose from standard atmospheric pressure, the device’s built-in barometer on supported devices, or manual entry. Selecting the barometer may require Motion & Fitness access because iOS manages pressure-sensor permission through this setting. Outdoor Conditions: Tap the Outdoor Air button to retrieve the current temperature, relative humidity, and weather conditions for your location from Apple Weather. Location access is requested only when this feature is used. This feature retrieves weather information; it does not directly measure the air conditions around your device. Psychrometer Types: • Assmann — Aspirated psychrometer with forced ventilation; provides the highest measurement accuracy. • Wall-Mounted — August psychrometer using natural airflow; simple and convenient, but less accurate. • Sling — Swung by hand to move air across the thermometers; portable and suitable for outdoor use. Assmann is the default setting. Tapping Reset or Outdoor Air returns the app to Assmann mode. Wall-Mounted and Sling modes use wet-bulb input. Psychrometric Process Reference: You can also explore psychrometric processes without using a psychrometric chart. • In dew-point input mode (°F DP), keep the dew point fixed and adjust the upper dial to observe heating and cooling changes. • In wet-bulb input mode (°F WB), keep the wet-bulb temperature fixed and adjust the upper dial to observe humidification and dehumidification changes. • To examine steam humidification, use relative-humidity input mode (%) and adjust the lower dial. Calculation Methods: The Sonntag equations are used for saturation vapor pressure. Vapor-pressure calculations use the Sprung, August, or Ferrel psychrometric relationships according to the selected psychrometer type. Relative humidity is calculated according to WMO conventions. The input range is intentionally wide, but extreme combinations may increase numerical error or fall outside the practical range of the formulas. Rounding and internal unit conversions may also cause the least significant digits to change when switching input modes. Results are provided for reference only. Although care is taken to ensure accuracy, results are not guaranteed. The developer is not responsible for any damage, loss, or disadvantage resulting from use of this app. This app contains ads. A one-time in-app purchase removes the banner ad and the full-screen ad shown at launch.

PockeTech: A Tech in Your Pocket Take your HVAC troubleshooting to the next level with PockeTech, the field technician’s ultimate digital assistant. Designed by professionals for professionals, PockeTech brings a wealth of hands-on expertise, diagnostic logic, and real-world solutions—right to your iPhone. Why Choose PockeTech? Stop second-guessing and start fixing. PockeTech gives you confidence, saves you time, reduces callbacks, and puts money back in your pocket by helping you diagnose it right the first time. Whether you’re troubleshooting a simple capacitor failure or unraveling a multi-component mystery, PockeTech’s guided workflows walk you through every step—helping you finish jobs faster, reduce wasted labor, and maximize your daily income. Key Features: Step-by-Step Diagnostics: Navigate intuitive, easy-to-follow logic trees built for real HVAC systems. From no-cool calls to complex electrical failures, you’ll know exactly where to start—and what to check next, saving time on every call. Component-Specific Workflows: Diagnose issues with compressors, blower motors, condenser fans, transformers, capacitors, contactors, and more. Isolate the root cause with simple yes/no guidance and clear, actionable advice—minimizing wasted effort and unnecessary part swaps. Quick Reference & Tech Tips: Access essential information on pressures, temperatures, common failures, and best practices—right at your fingertips, even offline. Boost your confidence, impress customers, and complete jobs more efficiently. Smart, Mobile-Ready Design: PockeTech is built to work fast and look great on any iPhone, with a clean interface you can use in the field—gloved hands and all. Maximize your productivity, even on the busiest days. Continuous Improvement: We listen to techs. PockeTech is always evolving with new features, updated diagnostic flows, and expanded equipment support. If you get stuck, just let us know—your feedback shapes the next update. Built by Real Techs—for Real Techs PockeTech is more than just an app. It’s the knowledge, troubleshooting flow, and best practices of seasoned HVAC professionals, packed into a tool you can trust. No more flipping through heavy manuals or searching online for answers while the customer waits. Just open PockeTech and get a clear, actionable diagnostic path in seconds—helping you reduce callbacks, increase first-call fixes, and earn a reputation for efficiency and quality. Perfect For: HVAC field service technicians Apprentices and trainees Service managers Anyone looking to improve diagnostic speed, accuracy, and income How It Works: Choose your issue: Start with a symptom (system won’t start, tripping breaker, low pressure, etc.). Follow the steps: Answer simple questions and follow clear instructions. Each answer leads you closer to the root cause—so you spend less time guessing and more time fixing. Fix it right: Get targeted advice—replace the right component, check the right wiring, or escalate when needed. Save on wasted parts and labor. Learn and improve: PockeTech builds your confidence, technical skills, and earning power with every use. Support and Feedback Can’t find your issue? Hit a dead end? Reach out through the app’s feedback link—real people read every message, and your input drives new features and improvements. Together, we’re building a smarter, stronger HVAC trade—one tech at a time. PockeTech: The Tech in Your Pocket Download now and experience fast, reliable HVAC troubleshooting—anytime, anywhere. With PockeTech, you’re never alone on a call—and you’re always working smarter. Note: PockeTech is intended as a tool for qualified HVAC professionals. Always follow safety procedures and manufacturer instructions when servicing equipment. • Privacy Policy: https://shorturl.at/Oic8F • Terms of Use: https://shorturl.at/AG2VZ • End User License Agreement (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/