Triplett HSDL300-NIST Heat Stress Wet Bulb Globe Temperature Datalogger with Certificate of Traceability to N.I.S.T
- Monitors indoor/outdoor heat stress to help limit the danger of heat-related injury
- Simultaneously displays Air Temperature or Globe Temperature, Humidity, and Wet Bulb Globe Temperature (WBGT)
- Memory stores up to 12,000 readings each containing Air Temperature, Humidity, WBGT, and Globe Temperature
- User programmable sampling rate of 1, 5, 10, 30, 60, 90, 120 minutes
- Programmable audible and visual WBGT alarm 68 to 122°F/20 to 50°C

The HSDL300 Heat Stress WBGT (Wet Bulb Globe Temperature) Meter monitors indoor/outdoor heat stress to help limit the danger of heat-related injury. It simultaneously displays Air or Globe Temperature, Humidity, and Wet Bulb Globe Temperature (WBGT). Memory stores up to 12,000 readings each containing Air Temperature, Humidity, WBGT, and Globe Temperature with a user programmable sampling rate of 1, 5, 10, 30, 60, 90, 120 minutes. A USB interface is used for transferring stored readings to your PC in csv format. It features a programmable audible and visual WBGT alarm and a backlight that changes color as the WGBT value increases (Green/ Yellow/Red/Flashing Red). An In/Out function switch measures WBGT with or without the effects of direct sunlight. °F/°C switchable. Tripod mount can be used to free-up your hands when taking measurements over an extended amount of time. Includes (4) AAA batteries and a mini USB cable. 1-year warranty. For outdoor athletic training and events, construction, iron and steel foundries, brick firing plants, glass facilities, boiler rooms, mining sites, and other areas where heat stress levels should be monitored.
Model HSDL300-NIST Comes with Certificate of traceability to NIST standards.
Features
- Monitors heat stress: Helps limit the danger of heat-related injuries indoors and outdoors.
- Simultaneous display: Shows Air or Globe Temperature, Humidity, and WBGT for comprehensive environmental monitoring.
- Large memory capacity: Stores up to 12,000 readings for extensive tracking of conditions over time.
- User programmable sampling: Choose from various intervals (1-120 minutes) to suit specific monitoring needs.
- Audible and visual alarm: Alerts users to WBGT levels (68 to 122°F/20 to 50°C) to maintain safety.
- Color-changing backlight: Provides instant visual feedback on temperature conditions.
- In/Out function switch: Allows for accurate WBGT measurement in both shaded and direct sunlight.
- °F/°C switchable: Offers versatility in temperature display according to user preference.
- USB interface: Facilitates easy transfer of data to PC in csv format for further analysis.
- Tripod mount included: Frees up hands for extended monitoring tasks.
- Battery and cable included: Comes with (4) AAA batteries and a mini USB cable for immediate use.
Triplett HSDL300-NIST Detailed Specifications
| Measurement Type | Heat Stress (WBGT) |
| Memory Capacity | 12,000 readings |
| Sampling Rate | 1, 5, 10, 30, 60, 90, 120 minutes |
| Temperature Range | 68 to 122°F / 20 to 50°C |
| Color Display | Backlight changes according to WBGT value |
| Alarm Type | Audible and visual |
| Power Supply | (4) AAA batteries |
| Interface | USB for data transfer |
| Tripod Mount | Yes |
| Included Accessories | Mini USB cable |
| Warranty | 1 year |







