HEAT STRESS METER TWL-1S SCARLET

The Heat Stress Meter TWL-1S has been tested and validated by Health Authority – Abu Dhabi in the extreme high temperature and high humidity Gulf region as well as the mines in Australia. The TWL algorithm used by TWL-1S device is the latest version attested by the research team in Curtin University, Australia.

Scenario
Risk assessment for heat-related illness in the worksite is quite essential in high temperature environments. TWL-1S can be applied at outdoor and indoor working environments. For instance, a health and safety officer can place the TWL-1S at the “hot spot” zone in worksite and continuously monitor environmental parameters. With 200 meters transmission distance of wireless signal, the paging system can actively warn safety officers in real time. TWL-1S is able to help managers set work/rest cycle and hydration plans for workers.

Measurement
Wet Bulb Globe Temperature (WBGT)
Thermal Work Limit (TWL)
Globe Temperature
Dry Bulb Temperature
Relative Humidity
Wet Bulb Temperature
Wind Speed


Item Description
Air Temperature Range 0…60 °C / Accuracy ±0.6 °C
Globe Bulb Indoor Range 0...80 °C / Accuracy ±1.0 °C (15...40 °C); ±1.5 °C (others)
Globe Bulb Outdoor Range 0...80 °C / Accuracy ±1.5 °C (15...40 °C); ±2.0 °C (others)
Relative Humidity Range 5...95 %rh / Accuracy ±3% (at 25 °C; 10...90 %rh) ±5% (others)
Wind Speed Range 0.5...10 m/s / Accuracy ±(2% of reading + 0.2) m/s
Dimensions Body 59 x 37 x 316 mm (w x d x h). Wind cup (top view) diameter 182 mm
Operating range electronics -10…60 °C
Accuracy at 23 ±5 °C ±1.0 %rh / ±0.2 K
Power supply / consumption 4 AAA 3V battery, power supply 6 mA consumption without lighting
Probe protection Polypropylene plastic cage
Measurement interval 2 seconds
Data logger Yes. Min data rate 1 min up to 60 min, 2,000 data.
Connection Interface Mini USB (UART)
Calibration / adjustment Scarlet calibration kit
Wireless Connection (Optional) 433 MHz (TWL-1SR Model)


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