Description
TQC Dew Point Calculator
TQC Dew Point calculator is a handy tool to determine dew point temperature based upon the measurements from sling psychrometer . The measurement unit is available in Celsius and also Fahrenheit converter.
The simple calculator for determining the dew point and relative humidity using the measurements, carried out with a Slinger psychrometer (measured in the wet / dry bulb principle) or an Electronic Temperature and also Relative Humidity meter.
Standard ISO 8502-4
Calculate the dew-point, which is a logarithmic function of the vapour pressure at the actual temperature. There are tables or charts from which the dew-point can be determined. Their parameters are air temperature and relative humidity at a given atmospheric pressure. Such as table is given in Annex A. Commercial dew-point calculators of sufficient accuracy is also be use.
| Relative humidity, % | 98 | 95 | 92 | 90 | 85 | 80 |
| Temperature drop, °C | 0,3 | 0,8 | 1,3 | 1,6 | 2,5 | 3,4 |
| NOTE The figures are mean values for air temperatures from 0 °C to 35 °C. For a give air temperature, more accurate figures can be obtaining from Annex A. | ||||||
TQC Dew Point Calculator DETERMINATION OF VALUES
- If a sling psychrometer, so called wet- dry bulb temperature is being
- After that is determine the dew point by putting the dry bulb temperature (upper white scale 1) against the wet bulb temperature (upper black scale).
- Read the dew point in the window 2 against the earlier determined wet bulb
- If an electronic Temperature and also Humidity meter is being used.
- Another step is determine the dew point by putting the black arrow on the lower scale 4 (Relative Humidity % RH) against the measured RH value in the measured RH value in the windows.
- Finally focus on the measured temperature at scale 3 and also read the dew point on the lower black scale (Dew Point).
For Example:
| Dry bulb temperature: | 25°C |
| Wet bulb temperature: | 19°C |
| Dew point: | 16°C |
| Relative humidity: | 58% |
Reliable Dew Point and also Humidity Calculations.
The TQC Sheen Dew Point Calculator allows professionals to quickly determine dew point temperature and also relative humidity using the traditional wet/dry bulb method. By referencing simple measurement inputs from a sling psychrometer, users can interpret the environmental conditions essential for surface preparation and also coating application.
Why Dew Point Testing Matters
In paint and also coating applications, surface temperature must remain above the dew point to prevent condensation—which can compromise adhesion, cause defects, or lead to coating failure. With the TQC Dew Point Calculator, users gain the ability to make quick, informed decisions in the field, helping to avoid costly rework or long-term durability issues.
How to Use the Dew Point Calculator
1. Take wet bulb and dry bulb temperature measurements using a sling psychrometer.
2. Use the TQC calculator dial to align the temperature values.
3. Instantly determine the dew point temperature and also relative humidity.
4. Use the built-in Celsius/Fahrenheit converter if needed for clarity or reporting purposes.
This tool doesn’t require batteries or calibration, making it especially reliable in outdoor or remote work sites.
How to Use the Dew Point Calculator
Quick Steps
- Take wet bulb and dry bulb temperature measurements using a sling psychrometer.
- Use the TQC calculator dial to align the temperature values.
- Instantly determine the dew point temperature and also relative humidity.
- Use the built-in Celsius/Fahrenheit converter if needed for clarity or reporting purposes.
This tool doesn’t require batteries or calibration, making it especially reliable in outdoor or remote work sites.
Detailed Instructions
1. Using a Sling Psychrometer (Wet-Dry Bulb Method):
– Align the dry bulb temperature (upper white scale 1) with the wet bulb temperature (upper black scale).
– In window 2, read the dew point value that corresponds with the previously aligned wet bulb temperature.
2. Using an Electronic Temperature and also Relative Humidity Meter:
- On the lower scale 4, set the black arrow to the measured relative humidity (RH %) value.
- Focus on the measured temperature at scale 3.
- Read the dew point directly from the lower black scale labeled “Dew Point Temp.”
Maintenance
Clean the calculator with a dry cloth. Do not use any abrasive or chemical cleaning solvents, as these may damage the plastic components. Always store the calculator in its protective sleeve when not in use.
A Practical Companion for Coating Inspections
While simple in design, the TQC Sheen Dew Point Calculator plays a critical role in environmental condition checks. It is particularly valuable for painting contractors, coating inspectors, and also quality control professionals who require a low-tech, fast, and dependable method for dew point assessments.
Pair It With Your Psychrometer
Although not an instrument itself, this calculator is designed to work in conjunction with a sling psychrometer or electronic RH meters. It supports accurate pre-application testing, helping to ensure your coatings perform as expected under the right environmental conditions.
Explore More Dew Point Testing Tools
Looking to expand your dew point and also climate testing tool kit ? Industrial Physics offers a range of precision instruments designed to work seamlessly with your workflow. Why not check out the Slinger Psychrometer, a reliable tool for determining relative humidity and temperature using the wet/dry bulb method. Or explore the Digital Thermo Hygrometer for fast electronic readings of temperature and also humidity. For advanced, on-the-go dew point measurements, consider the TQC Dewcheck Series — an ideal solution for professionals requiring real-time, high-accuracy readings in demanding environments.
The TQC Dew Point Calculator is made of durable plastic; simply wipe clean and dry with a soft cloth, and also return to the protective sleeve. About 6″ in diameter, the Dewpoint Wheel is easily stored in the coating inspector’s kit case.
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