No case studies available.
No technical documents available.
| 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) |
- Wet Bulb Globe Temperature (WBGT)
- Thermal Work Limit (TWL)
- Globe Temperature
- Dry Bulb Temperature
- Relative Humidity
- Wet Bulb Temperature
- Wind Speed
Scarlet TWL-1S is designed to measure WBGT and thermal work limit (TWL) heat index. The TWL measures air temperature, humidity, radiant heat and wind speed to come up with instructions for work, rest and hydration plan. We integrate the algorithm of TWL and work-rest schedule based on the latest guideline. The user-friendly interface even showed different colors to ensure users in line with TWL schedule. For example, red means unsafe for work, yellow means buffer zone and green means safe for work.
Why Choose TWL-1S
High Functionality
TWL-1S is designed for all kinds of worksites including mining and construction sites.
Smart Device
Built based on scientific research and algorithm for heat stress safety management.
Built-In Datalogger
Record and download TWL data directly on your windows computer via USB cable
World Class Standards
Every device is calibrated to ensure accuracy. Third-party calibration certificate is available upon request.
