Specifications:
- Dimensions:300x70x50mm(length x width x height).
- Weight: Approximately 220 grams.
Electrical Specifications (23℃±5℃) :
Wet bulb globe temperature (WBGT)
Unit | Range| Resolution | Accuracy@15~40°C
indoor&Outdoor without sunlight
°C | 0~59.0| 0.1 | ±1.0
°F | 32.0~138.0 | 0.1 | ±1.8
Outdoor With sunlight
°C | 0~56.0 | 0.1 | ±1.5
°F | 32.0~132.0 | 0.1 | ±2.7
※indoor & outdoor without sunlight:WBGT = (0.7×WET)+(0.3×TG)
Outdoor with sunlight:WBGT=(0.7×WET)+(0.2×TG)+(0.1×TA)
Air temperature (TA)
Unit | Range| Resolution| Accuracy@15~40°C
°C| 0~50.0| 0.1| ±0.8
°F| 32.0~122.0| 0.1| ±1.5
Black globe temperature (TG)
Unit | Range | Resolution| Accuracy@15~40°C
°C | 0~80.0 | 0.1 | ±0.6
°F | 32.0~176.0 | 0.1 \ ±1.1
Relative Humidity (%RH)
Measurement Range: 1%~99%
Accuracy : ±3.0%RH(20~80%)at 25°C | ±5.0%RH(<20%,>80%) at 25°C
Resolution ; 0.1%
Dew point temperature (DEW)
Unit | Range | Resolution
°C | -35.3~48.9 | 0.1
°F -31.5~120.1 | 0.1
The value is calculated from the RH and Air temperature.
Wet bulb temperature (WET)
Unit | Range | Resolution
°C | -21.6~50.0 | 0.1
°F | -6.9~122.0 | 0.1
The value is calculated from the RH and air temperature.
Application:
In order to measure the WBGT index, you should refer to the following regulations:
- ISO7243 : Hot environments. Estimation of the heat stress on working man.
- ISO7726 : Ergonomics of the thermal environment-instruments for measuring physical quantities.
Features:
- Quick-response capacitance sensor.
Accurate measurement for wet bulb globe
temperature(WBGT), black globe
temperature(TG),humidity(%RH), air
temperature(TA),wet bulb(WET) and dew point(DEW). - Max/Min and data hold.
- Low battery indication “ ”.
- LCD display with LED backlight.
- Single data record (TM-188 is able to record 50 data).
- Viewing data records.
- Switch the temperature unit to ℃ or ℉.
- Brass black ball in 50mm diameter.
- WBGT alarm setting.
- Auto power off with disable function.
- Interface: USB PC serial interface.(TM-188D)
- Data logging capacity :12000 records.(TM-188D)
- Sampling interval: Max 24 hours; Min 1 Second.(TM-188D)