Calculate Comfort vs testo Smart

Calculate Comfort computes the psychrometric properties of moist air — dew point, wet bulb temperature, absolute humidity, enthalpy and more — from temperature and humidity. Turn a dial instead of reading a psychrometric chart. Built for HVAC design, instrumentation, building maintenance and condensation control. Units: the Pro version switches the entire readout between IP and SI in one tap, °F⇄°C included. Useful when your measurements are in IP but the equipment data is in SI. If you work only in Fahrenheit, our companion app Psychrometer °F opens in Fahrenheit by default. ■ Who it's for ・HVAC engineers and contractors who need moist-air properties on site ・Technicians converting psychrometer readings to relative humidity ・Anyone assessing condensation or mold risk from dew point ・Students learning to read a psychrometric chart ■ What it calculates Enter temperature plus relative humidity, dew point or wet bulb temperature: ・Relative humidity (%RH) ・Dew point (°C DP) / frost point (°C FP), switchable below 0 °C ・Wet-bulb temperature (°C WB) ・Mixing ratio, gravimetric absolute humidity (g/kg) ・Absolute humidity, volumetric (g/m³) ・Enthalpy (kJ/kg), for load calculations ・Specific volume (m³/kg) ・Vapor pressure and saturated vapor pressure (hPa) ・Discomfort index (DI) ・Estimated WBGT heat index (indoor, no solar load) ・Comfort indicator (18–28 °C, 40–70 % RH) ■ Main features ◯ Three input modes: relative humidity, dew point or wet bulb temperature. Tap the % icon to switch; keyboard entry also available. ◯ Works in place of a psychrometric chart. Dew point mode traces constant absolute humidity — sensible heating and cooling. Wet bulb mode traces the constant wet-bulb line — humidification and dehumidification. ◯ Three psychrometer types: aspirated (Assmann), wall-mounted (August) and sling. Below freezing you can set whether the wet bulb is iced; below −10 °C this applies automatically, except for the sling type. ◯ Pressure-corrected calculation: standard pressure (1013.25 hPa), built-in barometer, weather data or manual entry (800–1200 hPa). ◯ Automatic weather retrieval from your location, with a recommended indoor temperature (ASHRAE Standard 55). Choose OpenWeatherMap or Apple Weather. ◯ Works offline. A connection and location permission are needed only to fetch outdoor weather. ◯ Comfort indicator in color and emoji. [Common gestures] ・Pressure and index readouts: tap to open settings ・Outdoor air (weather icon), dew point input, wet bulb input and reset buttons: touch and hold to open settings ■ Pro version (one-time in-app purchase) ・Removes all ads ・IP ⇄ SI unit switching in one tap: °C⇄°F, g/kg⇄gr/lb, g/m³⇄gr/ft³, kJ/kg⇄BTU/lb, m³/kg⇄ft³/lb, hPa⇄inHg ・Text export of calculation results ・Extended pressure input: 23–36 inHg ・Selectable saturation vapor pressure formula: Sonntag (WMO), Hyland-Wexler (ASHRAE), Wagner-Pruß (IAPWS-95), Goff-Gratch, Magnus-Tetens ■ Supported devices iPhone with iOS 16.0 or later. Also runs on Apple M1 Mac (macOS 13.0 or later) and visionOS 1.0. Home Screen: ComfortCalc. App header: Psychrometer°Calc. ■ What it does not do ・Does not measure temperature or humidity with the device; outdoor values come from weather data ・Does not perform measured WBGT with a globe thermometer ・Does not draw a psychrometric chart ■ Calculation basis ・Saturated vapor pressure: Sonntag; other formulas in Pro ・Vapor pressure: JIS Z 8806 ・Relative humidity and dew point: JIS and WMO; denominator over supercooled water ・Enthalpy: ASHRAE definition ・Recommended indoor temperature: ASHRAE Standard 55 ■ Notes Extreme input values increase error and may produce an error state. Rounding may shift the last digit when switching modes. Correctness of results is not guaranteed and no liability is accepted for damages arising from use. Documentation, FAQ and calculation specs: https://www7b.biglobe.ne.jp/~kanayama/PsychrometerCalc/

- All in one: The testo Smart App supports you with measurements on refrigeration, air conditioning, and heating systems, as well as in ensuring the safety and quality of food and frying oil, and in monitoring indoor climate and storage conditions. - Fast: Graphically descriptive display of measured values, e.g. as a table, for quick interpretation of results. - Efficient: Create digital measurement reports including. photos as PDF/ CSV files on site and send them via e-mail. The testo Smart App is compatible with the following Bluetooth®-enabled measuring instruments from Testo: - Thermal imager testo 860i for smartphones - All Testo Smart Probes - Digital manifolds testo 550s/557s/558s/550i/570s and testo 550/557 - Digital refrigerant scale testo 560i - Vacuum pump testo 565i - Flue gas analyzer testo 300/310 II/310 II EN - Vacuum gauge testo 552 - Clamp meter testo 770-3 - Volume flow hood testo 420 - Compact HVAC measuring instruments - Frying oil tester testo 270 BT - Temperature meter testo 110 Food - Dual purpose IR and penetration thermometer testo 104-IR BT - Data loggers 174 T BT & 174 H BT - Online data loggers testo 160, testo 162 & testo 164 GW Applications with the testo Smart App Refrigeration systems, air conditioning systems and heat pumps, heating systems, indoor air quality: - Leak test: Recording and analysis of the pressure drop curve. - Superheat and subcooling: Automatic determination of condensation and evaporation temperature and calculation of superheat / subcooling. - Target superheat: Automatic calculation of target superheat - Automatic refrigerant charging by weight, by superheat, by subcooling, and by target superheat - Vacuum measurement: Graphical progress display of the measurement with indication of start and differential value Indoor climate monitoring: - Indoor air quality: automatic calculation of the dew point and wet-bulb temperature - Temperature, humidity, lux, UV, pressure, CO2: the right data logger for every application – from a single solution to an online monitoring system" Ventilation systems: - Volume flow: After the intuitive input of the duct cross-section, the app calculates the volume flow fully automatically. - Diffuser measurements: simple parameterisation of the diffuser (dimensions and geometry), comparison of the volume flows of several diffusers when setting up a ventilation system, continuous and multi-point average calculation. Heating systems: - Flue gas measurement: Second screen function in combination with testo 300 - Measurement of gas flow and static gas pressure: Also possible parallel to the flue gas measurement (delta P) - Measurement of flow and return temperatures (delta T) Thermography: - Determining Delta T on heating, refrigeration/air conditioning, and industrial systems - Detecting hot/cold spots - Assessing the risk of mold Food safety: Temperature Control Points (CP/CCP): - Seamless documentation of measured values to fulfill HACCP specifications - Individually definable limit values and measurement comments within the App for each measurement point - Reporting and data export for regulatory requirements and internal quality assurance Frying oil quality: - Seamless documentation of measured values as well as calibration and adjustment of the measurement instrument - Individually definable limit values and measurement comments within the App for each measurement point - Reporting and data export for regulatory requirements and internal quality assurance --------------------------------------------------------- Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.testo.com/en/company/privacy-policy-app