Heat Stress
Heat Stress Monitor
Large display continually monitors temperature, relative humidity & all heat stress indicators:
- Air Temperature
- Relative Humidity
- Heat Index
- Dew Point
- Wet Bulb
- 5 Year Warranty, CE, RoHS
Government organizations such as OSHA have set recommended heat stress limits for various activities. Continually monitors all heat stress indicators. Recalls min/max temperature and provides visual alarms for user-selectable hi/lo temperature thresholds, (+ Relative Humidity on model #800034).
Datalogging Model #800035 adds an audible temperature alarm and records up to 32,000 data points that can be downloaded using the USB cable that comes with the unit and free downloadable software. Both models include 4 AAA batteries and stand on a desk-top or wall mount. An AC Adapter (800059) is included with Datalogger #800035 and available as an optional accessory for Monitor #800034.
Heat stress results from a combination of many environmental factors – air temperature and humidity along with radiant heat from the sun and surfaces, balanced by the cooling effect of breezes or airflow. OSHA is campaigning to prevent heat illness in workers and reports that every year thousands of workers become sick working in the heat, and some even die. Accurate measurements of heat stress conditions is a key component of a heat illness prevention plan. To prevent injury it is a good idea to have heat stress monitors in place. Heat stress monitors determine the level of heat stress as a result of a combination of external heat exposure from the environment. When the heat stress index becomes too high, the monitor will register the heat level as dangerous.
Dimensions: 4½” × 4¼” × 1″ (108 × 115 × 25 mm)
Weight: 5 oz (141 g)
| Range | Resolution | Accuracy | |
| Air Temperature: | -20 to 50°C -4 to 121°F | 0.1°C / F | ±0.6°C / ±1.2°F |
| RH: | 0.0 to 99.9% | 0.1% | ±3% FS @25°C |
Wet Bulb Globe Heat Stress Meter
The Wet Bulb Globe Heat Stress Meter is a lightweight meter that’s compact enough to carry anywhere.
- WBGT Temperature
- Air Temperature
- Relative Humidity
- Globe Temperature
OSHA and other government organization have set recommended heat stress limits for various activities. WBGT (Wet Bulb Globe Temperature) provides the most accurate determination of the heat stress index based on the cumulative effect of air temperature, air movement, relative humidity, and radiant heat.
Helps avoid heat exhaustion in public health, sports, military and industrial activities. Highly accurate readings with a typical response time of only 15 seconds. Provides settings for both indoor and outdoor activity and includes an audible alarm, adjustable to your WBGT threshold.
One of the many advantages of the WBGT Heat Stress Meter is its ability to stream data directly to a computer to log real-time information. In order to connect this model to a computer to stream data, you will need the USB Cable #840054 and Data Acquisition Software #840052. Comes with tripod screw and has the ability to connect with a computer with the proper accessories.
Globe diameter:1½” (38 mm)
Meter dim: 9¾” × 2″ × 1¼” (248 × 51 × 32 mm)
Weight: 4.6 oz (130 g)
*Certification Option
N.I.S.T. traceable Certificate of Compliance available at additional cost (Select option above).
| Unit of Measure | Range | Resolution | Accuracy |
|---|---|---|---|
| WBGT | 0 to 50ºC 32 to 122ºF | 0.1º C/F | ±2ºC indoor, 3ºC outdoor (-15 to 40ºC) otherwise ±2.5ºC indoor, 3.5ºC outdoor |
| Air Temperature | 0 to 50ºC 32 to 122ºF | 0.1º C/F | ±0.6ºC |
| Globe Temperature | 0 to 80ºC 32 to 176ºF | 0.1º C/F | ±2ºC (15 to 35 ºC) |
| Relative Humidity | 0 to 100% | 0.1% RH | ±3%(10 to 90%) otherwise ±5% |
Wet Bulb Globe Meter with Color Coded LCD
Takes the guesswork out of heat stress calculations.
This unique heat stress meter features bright, multicolor LED backlights corresponding to OSHA’s heat stress alert levels. This visual alert system (not visible in outdoor daylight), allows management and workers to be instantly aware when the heat index enters potentially dangerous zones. These features, combined with the optional audible alarm help to mitigate the risk of heat-related injuries in the workplace.
Calculates heat stress values for direct sunlight and shade and displays humidity, maximum and minimum ambient (TA) and black globe (TG) temperatures. Also, indicates low battery and a hold function. In order to connect this model to a computer to stream data, you will need the USB Cable #840054 and Data Acquisition Software #840052. Comes complete with clear instructions, integrated tripod screw and 4 AAA batteries.
*N.I.S.T. Traceable Certification Report is available for Relative Humidity & Air Temperature functions only.
Dim: 12″ × 3″ × 1½” (302 × 75 × 37 mm)
Weight: 11 oz (300 g)
*Certification Option
N.I.S.T. traceable Certificate of Compliance available at additional cost (Select option above).
| Unit of Measure | Range | Resolution | Accuracy |
| Ambient Air Temperature | 0 to 50ºC 32 to 122ºF | 0.1 | ±0.6ºC (1.5ºF) |
| Globe Temperature | 0 to 80ºC 32 to 176ºF | 0.1 | ±1ºC @15 to 40ºC ±2ºC outside this range |
| Relative Humidity | 5 to 90% | 0.1 | ±4% |
| WBGT | 0 to 50ºC 32 to 122ºF | 0.1 | ±1ºC @15 to 40ºC ±2ºC outside this range |
Wet Bulb Globe SD Card Logger
Reads relative humidity (RH), air temperature (TA), dew point, wet bulb globe temperature (WBGT) and black globe temperature (TG).
Also captures sample time and date. Records data onto standard SD (Secure Digital) memory cards (like a digital camera). When full, simply exchange SD cards for unlimited data storage. The removable SD card is easy to transport and insert into a computer’s memory card slot or SD card reader. Uploads pre-formatted data to Excel, without the need for additional software and cables. Additional SD cards are readily available in a variety of memory sizes.
Features an adjustable WBGT audible alarm, min/max, auto power-off, low battery indicator and hold function. This well-made unit is extremely accurate with fast response times, and includes a fold-out tripod and large, easy-to-read backlit LCD. Comes ready to use in a soft carrying case with 6 AA batteries, instruction manual, and an SD card.
Uses optional USB Power Cable #840058, or AC Adapter #840097. N.I.S.T. traceable Certification Report is available for RH & Air Temperature only.
Globe diameter: 2¾” (70 mm)
Dimensions: 10¾” × 2½” × 1¾” (273 × 64 × 44 mm)
Weight: 1 lb. (0.45 kg)
*Certification Option
N.I.S.T. traceable Certificate of Compliance available at additional cost (Select option above).
| Range | Resolution | Accuracy | |
|---|---|---|---|
| WBGT | Indoor / Outdoor: @95%RH -10 to 52°C (@0% RH -10 to 34°C) @95% RH 14 to 126°F (0% RH 14 to 93°F) | 0.1 | Indoor: ±1°C (15 to 59°C) ±1.5°C (Others) ±1.8°F (59 to 138°F) ±2.7°F (Others) |
| Outdoor: ±1.5°C (15 to 56°C) ±2°C (Others) ±2.7°F (59 to 132°F) ±3.6°F (Others) | |||
| Air Temperature | -0 to 50ºC 32 to 122ºF | (@15 to 40°C) ±0.8°C ± 1.5°F | |
| Globe Temperature | -10 to 65°C 14 to 149°F | (@15 to 40°C) ±0.6°C ± 1.1°F | |
| RH | 5 to 95% RH | ≥ 70% RH: ± 3% rdg + 1% RH, <70% RH: ± 3% RH | |
| Dew Point °C | -25.3 to 48.9°C | The dew point and wet bulb temperature values are calculated automatically using the humidity/air temperature measurement. | |
| Dew Point °F | -13.5 to 120.1°F | ||
| Wet Bulb °C | @95% RH -10 to 58°C (@0% RH -10 to 25°C) | ||
| Wet Bulb °F | @95% RH 14 to 136°F (@0% RH 14 to 77°F) |
