The PCE-FWS 20 Air Humidity Meter Station is a multi-functional wireless digital device that will exceed your expectations. This manufacturer-calibrated meteorological instrument accurately measures temperature, relative humidity, precipitation, atmospheric pressure, wind speed and wind direction. Featuring a free-standing or wall-mountable touchscreen LED display with backlight, the PCE-FWS 20 makes a fantastic gift.
- Indoor temperature in Celsius or Fahrenheit
- Outdoor temperature in Celsius or Fahrenheit
- Indoor air humidity / outdoor humidity
- Air pressure indication in Hg or hPa
- Absolute or relative air pressure display selectable
- Precipitation indicator in mm or inch
- Precipitation indicator for 1 hour, 24 hours, 1 week, 1 month
- Wind speed in mph, km / h, m / s, knots ...
- Wind direction indicator
- Wind Chill Temperature Display
- Weather forecast, tendency indicator, storm warning
The Air Humidity Meter combines various functions and sensors in only one instrument: Air Humidity Meter, Wind direction, Wind speed, Temperature meter, rainfall, and data logger. Furthermore, the meteorological station has different alarm functions and settings for the measurement parameters. The measured data can be sent by radio to the base unit (max. distance of 100 m). This test instrument is equipped with the latest technology used in meteorological analysis. The touch screen allows you to recall data onto the screen easily.
- 2 Displays
- Wireless Weather Station
- Touchscreen
- Windows software
- Data logger
The PCE-FWS 20 Air Humidity Meter is for private and professional use. This meteorological station allows the accurate detection of wind direction, wind speed, temperature, relative humidity and precipitation. The USB port and the included cable allows transmission of data from the device to a computer. Software for analysing data is also included, which enables you to analyse and check meteorological fluctuations, presenting data in graphs and diagrams for measurements over prolonged periods of time.
- 3 Displays
- Wireless Weather Station
- Touchscreen
- Windows software
- Data logger
The Multifunction Air Humidity Meter PCE-THA 10 is easy to operate with one hand thanks to its compact size, the new structure and integrated impeller. In addition to the humidity, the air humidity meter measures the temperature, wind speed, dew point, the wet bulb temperature and the air volume. Average wind speed values can be determined with the anemometer from the 20 preset points.
- Temperature measuring range: -15 ... 50°C / 5 ... 122°F
- Humidity range: 5 ... 95% RH
- Air speed: 0.4 ... 35 m / s
- Air flow: 0 ... 9.999 m3 / s
- Incl. ISO Calibration Certificate
PCE-444 is a combination digital hygrometer and digital thermometer used to measure air temperature, relative humidity, dew point temperature and wet bulb temperature. This portable handheld pocket-sized mini thermo-hygrometer allows for the quick and easy determination of indoor ambient environmental conditions.
- Humidity measuring range: 0 ... 100% relative humidity (RH)
- Temperature measuring range: -20 ... 70°C / -4 ... 158°F
- Resolution: 0.1%, °C, °F
The Air Humidity Meter PCE-TH 5 is a universal temperature / humidity gauge which allows the measurement of both the ambient temperature and the ambient humidity, as well as the determination of the dew point and wet bulb temperature. Because of the data-hold function you can store a measurement in the display. The easy to read display also shows the Min, Max and Average measurement. The pocket humidity comes manufacturer calibrated.
- Temperature measuring range: -20 ... 50°C / -4 ... 122°F
- Humidity measuring range: 0 ... 99.9% r.H.
- Resolution: 0.1°C / 0.18°F, 0.1% relative humidity
- Measurement accuracy: ±3% r.H. / ±0.6°C / 1.08°F
- Calculation of dew point and wet bulb temperature
The PCE-HT 71N Air Humidity Meter detects air temperature and humidity and stores readings in its internal memory. The Air Humidity Meter has a compact format and a wide memory capacity (up to 32,000 values / 16,000 values for each parameter) and it is mainly used as a data logger in fields such as supermarket refrigeration units, refrigerated transport, warehouses, and other temperature controlled environments.
- Measurement range: 0 ... 100% RH / -35 ... 80°C / -31 ... 176°F
- Accuracy: ± 3% RH (20 ... 80%) and ± 5% / ± 1°C (1.8°F)
- Resolution: 0.5% RH / 0.1°C (0.18°F)
- Memory: Max. 32,000 measurement data (16,000 for each parameter (humidity / temperature))
PCE-555 is a combination digital hygrometer and digital thermometer used to measure relative humidity or air humidity as well as air temperature, dew point temperature and wet-bulb temperature. This portable, handheld meter allows for quick and easy detection of environmental conditions. Applications include monitoring climates of refrigerated trucks, warehouses, construction sites and HVAC installations, where excess moisture, condensation and uneven temperatures can create mold, spoilage and health hazards.
- Humidity measuring range: 0 ... 100 % relative humidity (rh)
- Temperature measuring range: -30 ... 100°C / -22 ... 212°F
- Resolution: 0.01 % rh / 0.01°C or 0.018°F
PCE-EM 886 is a portable handheld multifunctional digital device used to measure sound, light, humidity, temperature, AC / DC current, electrical resistance, capacitance and frequency.
- Sound: 35 ...100 dB
- Light: 4,000 ... 40,000 lux
- Humidity: 33 ... 99% RH
- Temperature: 0 ... 50°C Indoor, -20 ... 1300ºC Type K
- Auto-ranging electrical multimeter
The Multifunction Air Humidity Meter PCE-THA 10 is easy to operate with one hand thanks to its compact size, the new structure and integrated impeller. In addition to the wind speed, the Air Humidity Meter measures the temperature, humidity, dew point, the wet bulb temperature and the air volume. Average values can be determined with the Air Humidity Meter from the 20 preset points. All test instruments are delivered manufacturer calibrated. You can buy ISO certification as an option.
- Temperature measuring range: -15 ... 50°C / 5 ... 122°F
- Humidity range: 5 ... 95% RH
- Air speed: 0.4 ... 35 m / s
- Air flow: 0 ... 9.999 m3 / s
PCE-EM 882 is a portable, handheld, multifunctional digital device capable of measuring four different physical parameters. An ideal tool for use in industrial hygiene, HVAC performance assessment and environmental condition monitoring applications, this easy-to-use measuring instrument includes sensors for measuring sound, light, temperature and relative humidity.
- Sound: Low and high A- and C-weighted noise measurements
from 35 ... 130 dB
- Light: 20, 200, 2000, 20000 lux ranges
- Temperature: Range from -20 ... 750ºC / -4 ... 1400ºF
-
Relative humidity (RH): Range from 25 ...95% RH
Multifunction PCE-THB 38 air humidity meter to measure a range of parameters: humidity, temperature, barometric pressure (dewpoint temperature is calculated). The air humidity meter also shows atmospheric pressure in a range of 10 to 1100hPa. With all of these features, it is a complete climatological device. The test instrument is shipped manufacturer calibrated. Otherwise, a laboratory calibration and certification can be ordered optionally to meet ISO or requirements.
The PCE-HT110 Air Humidity Meter or Humidity Detector precisely measures air temperature and relative humidity. This accurate and reliable device shows the current measurements on the large LCD display and saves the measurement data directly to an SD card (included). The PCE-HT110 is equipped with two channels, accommodates an SD card memory of up to 16 GB, offers an adjustable measurement rate / sampling interval, and includes a wall mount, making the device ideal for logging data over an extended period of time.
- Measurement ranges: 0 … 50°C / 32 ... 122°F, 10 ... 90% RH
- Resolution: 0.1°C / 0.18°F, 0.1% RH
- Data format: .XLS (compatible with Microsoft Excel)
PCE-THB 40 is a digital thermometer-hygrometer-barometer with data recording functionality. This compact yet robust data logger detects ambient temperature, relative humidity and atmospheric or barometric pressure. Measurement values are displayed in real time on the large LCD screen and saved to the included SD card as a Microsoft Excel-compatible .XLS file for seamless transfer to a PC or portable computer. Data can also be transferred via an optional USB data cable complete with PC-compatible software (SOFT-LUT-US) for live visualization. Measurement quota can be freely adjusted, with data captured every 5, 10, 30, 60, 120, 300 or 600 seconds, or automatically when there is an alteration of ±1º, ±1% RH or ±1 hPa.
- Ambient temperature range: 0 ... 50°C / 32 ... 122°F
- Relative humidity (RH) range: 10 ... 90% RH
- Barometric pressure range: 10 ... 1100 hPa / 7.5 ... 825 mmHg / 0.29 ... 32.48 inHg
The PCE-HT 71N air humidity meter detects air temperature and humidity and stores readings in its internal memory. The air humidity meter has a compact format and a wide memory capacity (up to 32,000 values / 16,000 values for each parameter) and it is mainly used as a data logger in fields such as supermarket refrigeration units, refrigerated transport, warehouses, and other temperature controlled environments.
- Measurement range: 0 ... 100% RH / -35 ... 80°C / -31 ... 176°F
- Accuracy: ± 3% RH (20 ... 80%) and ± 5% / ± 1°C (1.8°F)
- Resolution: 0.5% RH / 0.1°C (0.18°F)
- Memory: Max. 32,000 measurement data (16,000 for each parameter (humidity / temperature))
- Incl. ISO calibration certificate
With the PCE-320 Air Humidity Meter it is possible to measure climate conditions such as temperature and relative humidity, as well as determining surface temperature of objects simultaneously by using the included external temperature sensor or using an infrared measurement. The Air Humidity Meter offers features such as average value, maximum, minimum, and hold functions at a reasonable price.
- Internal probe
- Temperature: -20°C ... 60°C / -4 ... 140°F
- Relative humidity: 10 ... 90% r.H.
- Temperature of global: -22°C ... 60°C / -8 ... 140°F
- Humidity: -68°C ... 60°C / -90 ... 140°F
- Dew point temperature: depending on the sensor
- External probe
- Temperature: -50° C ... 500° C / -58 ... 932°F
PCE-313A is a combination thermometer hygrometer used to measure the relative humidity (% RH) and temperature (°C / °F) of the air. Ideal for use in evaluating heating, ventilation and air conditioning (HVAC) system performance, this digital temperature and air humidity meter also has a port for connecting a type-K thermocouple.
- Relative humidity: 5 ... 95% r.H.
- Temperature: 0 ... 50°C / 32 ... 122°F
- Type K: -50 ... 1300°C / -58 ... 2372°F
- Calculated dew point: -25.3 ... 48.9°C / -13.5 ... 120°F
- Wet bulb temperature: -21 ... 50°C / -5.8 ... 122°F
- Memory: SD card (1 ... 16 GB)
The PCE-THB 38 air humidity meter is ideal for detecting and digitally displaying humidity, temperature and barometric pressure. Temperature is measured by an RTD sensor and air humidity is measured by a highly repeatable, capacitive sensor. All products are test instruments, and the air humidity meter is sent out manufacturer calibrated. An ISO certification is available optionally.
The following text is designed to assist you in purchasing an air humidity meter. However, should you have any questions about the air humidity meter products found on this website, please do not hesitate to contact the PCE technical support team at or +44 (0) 2380 987 035 for PCE Instruments UK, or at or +1 (561) 320-9162 for PCE Americas Inc.
Accuracy is a key component to consider when buying an air humidity meter. When looking at different air humidity meter devices, it is important to evaluate the air humidity meters based on the level of accuracy required for your application, as a high-accuracy air humidity meter product typically comes with a higher price 
tag. For example, a high-accuracy air humidity meter would be essential for a food safety inspector, as stringent standards must be met when it comes to food storage and refrigeration. In contrast, if you are in search of an air humidity meter for use in your home, a device with lower accuracy would provide you with an adequate estimate of the relative humidity indoors.
For temporary humidity measuring applications (such as simple control measurements, spot checks to assess concrete drying conditions, or evaluations of heating, ventilation and air conditioning (HVAC) system performance), a portable handheld air humidity meter without memory may be used. Portable air humidity meter devices often are ergonomically designed to allow for quick, easy and comfortable one-handed operation.
For long-term or continuous monitoring of relative humidity, a fixed air humidity meter with memory and data-logging capabilities is ideal. Many fixed air humidity meters with memory record and store date- and time-stamped humidity measurement data either to an internal memory or a removable SD memory card. Depending on the model, some air humidity meters for continuous monitoring also record and store peak values (minimum and maximum) and/or emit an alarm when a certain user-defined threshold of air humidity is reached. Most data-logging air humidity meters allow the stored data to be transferred to computer using special software, a USB or RS-232 interface cable and/or an SD memory card reader. Data transfer to a computer makes documentation and reporting easy, as measurements do not have to be written down by hand. In addition, some air humidity meter products save the data in a Microsoft Excel-compatible format.
Stationary air humidity meters used for the continuous monitoring of climate-controlled environments like refrigerated trucks, storage units, warehouses and museum archives are used to survey indoor environmental conditions in the context of safety and quality assurance. Air humidity meters with memory also aid in documenting an organization's compliance with industry standards and best practices. Air humidity meters for permanent installation usually come with the necessary brackets or hardware required for 
mounting the device on a wall or DIN rail. Often a fixed-installation air humidity meter instrument is equipped with a kickstand or tripod, so the device can be positioned as needed on a desk, table, counter or workbench. If it is necessary to read the humidity measuring results from a distance, an air humidity meter with a large and easy-to-read liquid crystal display (LCD) should be selected. In addition, when working in low-light or dark environments, it is critical that the display be backlit.
Again, application plays an important role when selecting an air humidity meter. For non-professional use, a simple air humidity meter that only needs to be switched on to start measuring is recommended. Most professional usages will require an air humidity meter with more advanced functions. Bear in mind, the more functions an air humidity meter possesses, the more complex the air humidity meter will be to use. However, experienced contractors, technicians and engineers will be more than comfortable using an air humidity meter with added functionality, as digital air humidity meter menu structures are somewhat standardized throughout the test, measurement and inspection equipment industry. If an air humidity meter has many different functions, it can be helpful to have several buttons or keys on the device, as more keys can provide time-saving shortcuts for navigating a device's menu structure. In just-in-time (JIT) manufacturing environments, even the smallest time savings can be a tremendous asset. Another point to consider regarding keys is their size. For example, in the food processing industry, bigger keys are desired to accommodate users required to wear protective gloves.
The air humidity meter's material and ingress protection (IP) rating are additional factors to explore before buying. Depending on the anticipated operating conditions, your air humidity meter may need to be made of a durable material such as high-quality ABS plastic. Your air humidity meter's housing also may need to be dustproof or waterproof. The IP rating system is a widely recognized set of international standards related to an electronic device's ability to protect against the intrusion of foreign bodies. This rating is typically presented as the letters I and P followed by a two-digit number, i.e., "IP##." The first digit of the number pertains to solids (dust), while the second digit pertains to liquids (water). The higher the digit, the greater the level of protection afforded by the device.
Lastly, don't forget to evaluate the air humidity meter's power supply and accessories. If your air humidity meter is powered by batteries, the batteries should be a commonly used size so they are easy to find and affordable to replace. If your air humidity meter is powered by an AC adapter, take care to ensure the power cable won't interfere with other aspects of your work environment. Many PCE-brand air humidity meters offer replacement parts like spare batteries, sensors, cables and adaptors as optional accessories. In addition, an ISO calibration certificate can be obtained as an accessory for most PCE-brand air humidity meter products.
In modern measuring technology, an air humidity meter often is used in combination with a temperature measuring instrument. The measured values for relative humidity and temperature can be used to in tandem to measure dew point or water vapor content.
Humidity, also called relative humidity or air humidity, is defined as the amount of water vapor in the air. However, humidity is relative. It is normal and even important that air contains water vapor. The amount of water vapor in the air depends on several factors, including the temperature of the air. Warm air is generally more humid than cold air. This means that when air temperature decreases, the maximum amount of water the air can hold also decreases. An air humidity meter displays readings in a percentage of relative humidity (% RH). So, if an air humidity meter displays a measuring result of 20% RH, then the air holds 20% of the maximum amount of water possible at that temperature.
When the air is humid outdoors, water and sweat evaporate more slowly. Fog, dew and precipitation become more likely. Indoors, high humidity can trigger symptoms for those suffering from allergies, asthma and chronic obstructive pulmonary disease (COPD). Excessive condensation also can form in overly humid indoor environments, resulting in the growth of mold and bacteria. However, when the indoor air is too dry, skin becomes itchy and dry and can even crack. Some people also experience problems with nose bleeds in very dry climates.
When the air is too humid indoors, it can sometimes be enough to simply open some windows and doors. Other times, the performance of the HVAC system should be evaluated by a trained professional. In extreme cases, a more complex measure must be taken, like the installation of an extractor fan. In many instances, a reliable air humidity meter can be used to identify the root of the problem.
