WBGT-2006Wet bulb black bulb temperature index meter:

The instrument host adopts a fully Chinese operation menu. The instrument adopts digital temperature sensitive components to directly output digital temperature signals. The dry bulb, wet bulb, and black bulb temperatures are displayed directly on the screen, and the WBGT index value at this time is also displayed. The longest storage time for data records can reach up to 100 hours.
This method can be conveniently applied in industrial environments to evaluate the thermal intensity of the environment. It is used to evaluate the heat intensity experienced by the human body throughout the entire work cycle, and is not suitable for evaluating the heat intensity in a short period of time or near the comfort zone. This method has been used by some European households to evaluate the thermal and meteorological conditions of high-temperature workshops for many years, and the ISO standardization organization has officially adopted this method as a testing standard for thermal intensity since 1982 (see ISO7243). And my existing "Classification of High Temperature Operations" (GB/T4200-1997) and "Occupational Exposure Limits to Hazardous Factors in the Workplace" (GBZ2-2002) standards also use the WBGT index method. This instrument complies with the GB/T4200-1997 standard.

WBGT-2006The difference between the wet bulb black bulb temperature index meter and the old 2006 model:

2006The WBGT index meter consists of a measuring head and an instrument host. Compared with the * generation product 2000, it has the characteristics of automatic data storage and recording, automatic analysis, and is equipped with computer application software. It can be connected to a computer through a USB interface and use the analysis software provided with the device to analyze the maximum, minimum, and average values of any time period.

WBGT-2006Technical parameters of the wet bulb black bulb temperature index meter:

The wet bulb black bulb temperature (WBGT) index is used to evaluate the meteorological conditions of high-temperature workshops, taking into account four factors: air temperature, wind speed, air humidity, and radiant heat. WBGT is composed of three parts: black ball, dry ball, and natural wet ball. The temperature reading of the black sphere is affected by air temperature, wind speed, radiation heat, and air temperature. After long-term experimental research, scholars believe that when these three readings are calculated in the following way, the results obtained can accurately reflect the meteorological conditions of the workplace.

Regarding the measuring head:

To ensure the accuracy and stability of the test, the temperature sensitive element used in this instrument is the current digital temperature sensitive element. The black ball temperature, natural wet ball temperature, and air temperature measuring heads are horizontally installed on the same horizontal frame.

Parameter characteristics:
⑴The natural wet bulb temperature probe cover has a layer of gauze and is placed in the tested environment, relying purely on natural ventilation without using forced ventilation. Therefore, the obtained reading is different from the count of the ventilated dry bulb thermometer.
The natural wet bulb temperature probe has the following characteristics:
Probe shape: cylindrical
Measuring head outer diameter: 6 ± 1mm
Minimum length of measuring head: 30 ± 5mm
Measurement range: 5-40 ℃
Accuracy: ± 0.5 ℃
The measuring head should be wrapped with a highly absorbent material, such as cotton gauze. The gauze should form a sleeve shape, with a size that fits perfectly over the measuring head. If it is too tight or too loose, it will affect the reading of the measuring head. The gauze should be kept clean. The lower end of the gauze should hang in a water tank, and the free length of the gauze in the air should be 20-30mm. It should be able to prevent the water temperature from rising due to radiation heat.
Any other type of device can be used if the same data can be obtained after calibration.
⑵Black ball temperature probe
The temperature sensitive element of the black ball temperature probe is placed at the center of the black ball, and the characteristics of the black ball are:
Diameter: 150mm
Average radiation coefficient: 0.95 (unpolished black sphere);
Thickness: The thinner the better;
Measurement range: 20-120 ℃;
Accuracy: 20-40 ℃± 0.5 ℃
50-120℃±1℃
⑶Air temperature sensor
Attention should be paid to preventing the sensitive components of air temperature from being affected by radiation heat during measurement.
Measurement range: 10-60 ℃;
Accuracy: ± 0.5 ℃.