Wet Bulb Globe Temperature (WBGT)
Measurement range	Indoors: 0 - 59°C / 32 - 138°F Outdoors: 0 - 56°C / 32 - 132°F
Accuracy indoors	± 1°C / ± 1.8°F from 15 - 59°C / 59 - 138°F ± 1.5°C / ± 2.7°F other temperature ranges
Accuracy outdoors	± 1.5°C / ± 2.7 °F from 15 - 56°C / 59 - 132°F ± 2°C / ± 3.6°F other temperature ranges
Air Temperature (TA)
Measurement range	0 - 50°C / 32 - 122°F
Resolution	0.1°C / 0.18°F
Accuracy	± 0.6°C / 1.08°F
Black-Globe Temperature
Measuring range	0 - 80°C / 32 - 176°F
Resolution	0.1°C / 0.18°F
Accuracy	± 0.6°C / 1.08°F
Humidity
Measurement range	5 - 95% R.H.
Resolution	0.1% R.H.
Accuracy	> 70% RH: ± (3% read value + 1% RH) < 70% RH: ± 3% RH
Dew Point Temperature
Measuring range	-25.3 - 48.9°C / -13.5 - 120°F
Resolution	0.1°C / 0.18°F
Wet Bulb Temperature
Measuring range	-21.6 - 50°C / -6.9 - 122°F
Resolution	0.1°C / 0.18°F
General Technical Specifications
WBGT formula	Inside /outdoors and no sun: WBGT= (0.7 x WB) + (0.3 x TG) Outdoors and sun: WBGT=(0.7 x WB) + (0.2 x TG) + (0.1 x TA)
Data storage intervals	Automatically: every 1 - 3600 seconds Manually: with every key press
Memory Card	SD memory card 1 - 16 GB
Interface	RS232 / USB
Display	LCD with background lights, 52 x 38 mm / 2 x 1.5 in
Operation Temperature	0 - 50 °C / 32 - 122°F
Environmental Humidity	< 85% R.H.
Voltage Supply	6 x 1.5V AA batteries or 9V Adapter
Power Consumption	DC 14-mA at standard operation DC 37-mA with data storage and without Display lights on
Weight	489 g / 1.1 lbs
Dimensions	Device: 177 x 68 x 445 mm / 7 x 2.7 x 17.5 in Bulb: Ø 75 mm / 3 in

 

The PCE-WB 20SD hygrometer represents a highly advanced solution for the precise measurement of the WBGT index (Wet Bulb Globe Temperature), used to monitor thermal stress conditions in both indoor and outdoor environments. This advanced instrument is designed to accurately detect a range of critical parameters, including black globe temperature, relative humidity, wet bulb temperature, and the dew point. These values are essential to prevent risks related to heat exposure in extreme working conditions, where employee safety is a top priority. The hygrometer proves indispensable for various applications, including industrial and maintenance activities.

 

The main function of the PCE-WB 20SD hygrometer is to monitor potential thermal stress, offering excellent guidance for taking appropriate measures in outdoor work environments or high-temperature settings. Thanks to the WBGT index, which measures heat and humidity conditions, guidelines can be established to manage work breaks and limit physical activities in adverse weather conditions. This tool is also particularly useful in the military and sports sectors, where the US Armed Forces originally developed the basis for WBGT measurement to ensure safety in training camps. Subsequently, the method extended to companies and outdoor activities to improve workplace safety.

 

The PCE-WB 20SD hygrometer is equipped with a graphical LCD display that enables real-time viewing of the detected values. Additionally, data can be stored on the integrated SD memory card, allowing up to 99 values to be automatically logged at adjustable intervals from 1 to 3600 seconds. This functionality proves especially useful for tracking environmental changes over time and for having a detailed record of the measurements. In manual mode, data can be recorded at the press of a button, allowing full control over the monitoring process.

 

Another key feature of this hygrometer is the audible alarm, which activates automatically when critical variations in the monitored conditions occur, providing timely alerts to personnel. This makes the instrument particularly suitable for industrial settings and preventive maintenance, where continuous and accurate monitoring of thermal conditions is essential to prevent failures or operational interruptions. Data transfer is facilitated by the SD card, which can be directly read on a PC using simple spreadsheet software for data analysis.

 

The PCE-WB 20SD hygrometer is also distinguished by its ease of use and robustness, making it an indispensable tool for engineers and technicians who need reliable and immediate data to evaluate thermal conditions in work environments. Whether in industrial sectors, laboratories, or sports environments, this instrument provides a comprehensive analysis of climatic conditions, thereby improving safety and operational efficiency. Thanks to its precision and advanced features, the hygrometer ensures high standards of reliability and long-term performance.

 

- For real-time or long-term temperature and humidity measurement applications
- Temperature can be displayed in metric or imperial units, i.e., degrees Celsius (°C) or degrees Fahrenheit (°F)
- Maximum, minimum, data hold and automatic power off (can be disabled) functions
- Programmable WBGT alarm setting with audible and visual alerts
- Manual (push-button) or automatic (adjustable 1 - 3600 sec) sampling
- SD card memory (1 - 16 GB) allows for quick and easy data transfer to a PC

 

1 x PCE-WB 20 SD Psychrometer
1 x SD card memory
1 x User manual
1 x Carrying case