Black ball wet bulb index meter

NegotiableUpdate on 03/12

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

Product introduction: The black bulb wet bulb index meter is used to evaluate the meteorological conditions of high-temperature workshops. It comprehensively considers four factors: air temperature, wind speed, air humidity, and radiant heat. WBGT is composed of three temperature components: black ball, natural wet ball, and dry ball. The temperature reading of the black sphere is affected by air temperature, radiation heat, and wind speed, while the natural wet sphere temperature is affected by air temperature, wind speed, radiation heat, and air humidity. After long-term experimental research, it is believed that when these three readings are comprehensively calculated using the following method, the results obtained can accurately reflect the meteorological conditions of the workplace.

Product Details

LY-09Introduction to WBGT Index Meter

OneBlack ball wet bulb index meterPurpose and principle

Black ball wet bulb index meterIt 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.WBGTIt is composed of three temperature components: black sphere, natural wet sphere, and dry sphere. The temperature reading of the black sphere is affected by air temperature, radiation heat, and wind speed, while the natural wet sphere temperature is affected by air temperature, wind speed, radiation heat, and air humidity. After long-term experimental research, it is believed that when these three readings are comprehensively calculated using the following method, the results obtained can accurately reflect the meteorological conditions of the workplace.

WBGTThe calculation method of the index is as follows:

When there is no solar radiation heat indoors and outdoors:

　　WBGT＝0.7t_nw+0.3t_g

When there is solar radiation heat outdoors

　　WBGT＝0.7t_nw+0.2t_g+0.1t_a

When calculating various parameters, the average value should also be taken into account as it varies with time and air.

IIWet bulb black bulb temperature WBGT index meterStructure of the instrument

Wet bulb black bulb temperature (WBGT) index meterIt consists of two parts: sensor probes and indicator instruments.

1Measuring head

Three sensors measuring natural wet bulb temperature, black bulb temperature, and dry bulb temperature.

⑴ Natural wet bulb temperature probe

Signal conditioning

A/D

converter

To all levels

Measurement range: 5-40 ℃

Accuracy: ± 0.5 ℃

⑵Black ball temperature sensor

Measurement range: 20~120 ℃

Accuracy: 20-50 ℃± 0.5 ℃; 50~120℃ ±1℃

⑶Air temperature sensor

Measurement range:10~60℃

Accuracy:±0.5℃

The digital temperature sensitive components used in this instrument ensure the accuracy and stability of the testing.

2.Indicator instrument

（1）Display and Reading

Turn on the power switch, and the instrument will directly display the indoor measurementWBGTOutdoorWBGTThe results include wet bulb temperature, black bulb temperature, dry bulb temperature, and time.

（2）Data playback

The measured data can be replayed. When replaying, turn off the device first, press and hold the replay button to turn it on and enter the replay program. The measured data is stored by stacking, and the delayed data is played back first. Then, press the middle button (next number) once to display the previous set of data.32The group data is displayed alternately.