Tenmars Bluetooth Heat Stress WBGT Meter
Heat Stress Wet Bulb Globe Temperature (WBGT) Meter
with Dew-Point (DEW) and Wet bulb (WET)
with Wireless Bluetooth Data logger
(Model No.: TM- 188B)

Quality Product ~ Made in Taiwan

The Bluetooth HEAT STRESS WBGT METER is quick-response with accurate measurement for the effects of temperature, humidity, and direct or radiant sunlight.

Application

Featuring automatic data recording and Bluetooth (BLE) wireless transmission, bluetooth heat stress WBGT meter can monitor and transmit data in real time to smartphones or tablets via a dedicated app, for in-depth analysis and advanced applications. Bluetooth Heat Stress WBGT Meter is ideal for environments where real-time monitoring is essential, such as sports training facilities, outdoor event venues, and high-temperature workplaces. The system supports faster, more convenient heat hazard monitoring and provides early warning capabilities.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.

Bluetooth BLE Connection & App Function Tutorial Please search for “WBGT TM ” in the App Store (iOS) or Google Play Store (Android) to download and install the application.

Features

• High-sensitivity, fast-response capacitive humidity sensor
• Wet bulb globe temperature (WBGT), Black globe temperature (TG), Air temperature (TA), Relative Humidity (%RH), Dew point temperature (DEW), Wet bulb temperature (WET).
• Max/Min/Ave readings and Data Hold function(HOLD)
• Low battery indicator
• LCD digital display with LED backlight
• Manual data recording (up to 50 entries) and reading
• Selectable temperature units: °C or °F
• 50 mm diameter black globe made of brass
• WBGT alarm setting
• Alarm buzzer on/off
• Auto power-off function and option to disable auto power-off
• BLE. connection for real-time heat environment monitoring
• USB interface for computer connection
• Data memory capacity up to 12,000 entries
• Sampling interval: maximum 24 hours, minimum 1 second

Specifications

• Electrical Specification (23℃ ±5℃)
• Wet bulb globe temperature (WBGT) :
• indoor & Outdoor without sunlight : WBGT = (0.7×WET)+(0.3×TG)
• Range : 0~59.0℃ / 32.0~ 138.0℉
• Resolution : 0.1℃ / 0.1℉
• Accuracy@15~40℃ : ±1.0℃ / ±1.8℉
• Outdoor with sunlight : WBGT=(0.7×WET)+(0.2×TG)+(0.1×TA)
• Range : 0~56.0℃ / 32.0~ 132.0℉
• Resolution : 0.1℃ / 0.1℉
• Accuracy : ±1.5℃ / ±2.7℉
• Air temperature (TA):
• Range : 10.0~60.0℃ / 50.0~140.0℉
• Resolution : 0.1℃ / 0.1℉
• Accuracy @15~40℃ : ±0.8℃ / ±1.5℉
• Black globe temperature (TG):
• Range : 20~80.0℃ / 68.0~176.0℉
• Resolution : 0.1℃ / 0.1℉
• Accuracy @15~40℃ : ±0.6℃ / ±1.1℉
• Relative Humidity (%RH):
• Range : 1%~99%
• Resolution : 0.1%
• Accuracy at 25℃ : ±3.0%RH(20~80%) / ±5.0%RH(<20%,>80%)
• Dew point temperature (DEW):
• Range : -35.3~48.9℃ / -31.5~120.1℉
• Resolution : 0.1℃ / 0.1℉
• The value is calculated from the RH and Air temperature.
• Wet bulb temperature (WET):
• Range : -21.6~50.0℃ / -6.9~122.0℉
• Resolution : 0.1℃ / 0.1℉
• The value is calculated from the RH and air temperature.
• Dimension : 243 x 70 x 50mm (L x W x H)
• Weight : 220g. (Without batteries).
• Power supply : 9V battery or AC100~240V DC 9V/ 0.5A(9mm).
• Battery life : 200 hours.
• Operating Temperature & Humidity : 0°C to +50°C.
• Storage temperature & humidity : -10°C to +50°C .
• Data output : USB PC serial interface,12000 records.
• LCD : 52mm(W)x36mm(L) monochrome LCD and backlight.
• Standard accessories:
• 9V battery x 1
• User’s manual x 1
• Carrying Box x 1
• USB cable x 1
• US plug Power Adapter, AC100~240V to DC9V/0.5A x 1

Special Notes:

*We re-verification the upper range of Air Temperature (TA) of TM-188/188D/188B WBGT meter, 50℃ meet the MOM’s requirements accuracy of ±1℃. Reference to Calibration Certificate No. CTS 2612M-23 dated 4 Dec 2023.

**We re-verification the upper range of Globe Temperature (TG) of TM-188/188D/188B WBGT meter, 60℃ meet the MOM’s requirements accuracy of ±2℃. Reference to Calibration Certificate No. CTS 2656M-23 dated 20 Dec 2023.

Based on above confirmation, the upper range of both WBGT (50℃) and Wet bulb temperature (50℃) would meet the MOM’s specification.

We ONLY provide the Calibration Certificate No. CTS 2612M-23 dated 4 Dec 2023 and Calibration Certificate No. CTS 2656M-23 dated 20 Dec 2023 to our GMM’s customers upon request.