1. Introducció
The Sper Scientific Wet Bulb Globe Temperature (WBGT) Heat Stress Meter, Model 801038, is a professional-grade instrument designed to accurately measure and monitor heat stress conditions. This device is crucial for assessing environmental factors that contribute to heat-related illnesses in various settings, including workplaces, sports activities, and general environmental monitoring. It provides a clear, color-coded WBGT value on a large LCD display, simplifying the interpretation of OSHA WBGT guidelines.
Figure 1: Sper Scientific WBGT Heat Stress Meter, Model 801038.
2. Informació de seguretat
Please read and understand all safety instructions before operating the device.
- Do not expose the meter to extreme temperatures or direct sunlight for prolonged periods when not in use.
- Eviteu deixar caure el dispositiu o sotmetre'l a impactes forts.
- Do not attempt to disassemble or modify the meter. Refer all servicing to qualified personnel.
- Assegureu-vos que les piles estiguin inserides correctament d'acord amb les marques de polaritat.
- Traieu les piles si no heu d'utilitzar el dispositiu durant un període prolongat per evitar fuites.
3. Contingut del paquet
Verifiqueu que hi hagi tots els elements en desempaquetar:
- Sper Scientific WBGT Heat Stress Meter (Model 801038)
- Funda protectora
- Piles AAA (4 incloses)
- Manual d'instruccions
4. Producte acabatview
Familiarize yourself with the components of your WBGT Heat Stress Meter.
Figure 2: Key components of the Sper Scientific WBGT Meter.
- Black Globe (Brass): Measures radiant heat.
- Sensor Protective Sleeve: Protects the sensors when not in use.
- Pantalla LCD: Shows all measurement values and alerts.
- Botó POWER: Encén/apaga el dispositiu.
- TA/TG Button: Toggles between Air Temperature (TA) and Globe Temperature (TG) display.
- MIN/MAX/ESC Button: Displays minimum/maximum values or exits a menu.
- Botó SET: Enters settings menu or confirms selection.
- IN/OUT Button: Selects indoor or outdoor WBGT calculation mode.
- Botó HOLD: Freezes the current display readings.
5. Configuració
5.1 Instal·lació de la bateria
The meter requires 4 AAA batteries (included).
- Localitzeu la tapa del compartiment de la bateria a la part posterior del dispositiu.
- Feu lliscar o desenganxeu la coberta per obrir-la.
- Introduïu 4 piles AAA, assegurant-vos de la polaritat correcta (+/-) tal com s'indica a l'interior del compartiment.
- Col·loqueu la coberta del compartiment de la bateria amb seguretat.
5.2 Encès inicial
Premeu el botó PODER button to turn on the meter. The LCD display will illuminate and begin showing readings.
6. Instruccions de funcionament
6.1 Prendre mesures
Once powered on, the meter automatically begins measuring. Ensure the black globe and sensors are exposed to the environment you wish to monitor.
6.2 Mostra informació
Figure 3: Comprehensive data display showing Globe Temperature, Ambient Air Temperature, Relative Humidity, and WBGT value.
The large LCD screen simultaneously displays:
- WBGT Value: The primary heat stress index.
- Air Temperature (TA): The ambient air temperature.
- Globe Temperature (TG): The temperature measured by the black globe, indicating radiant heat.
- Humitat relativa (RH): The amount of moisture in the air.
6.3 Selecting Indoor/Outdoor Mode
Premeu el botó IN/OUT button to switch between indoor and outdoor WBGT calculation modes. The display will indicate the selected mode (IN or OUT). This is important as the WBGT calculation formula differs for indoor and outdoor environments.
6.4 Ús de la funció HOLD
Premeu el botó MANTENIM button to freeze the current readings on the display. Press it again to resume live measurements.
6.5 Minimum/Maximum Readings
Premeu el botó MIN/MAX/ESC button to cycle through minimum and maximum recorded values for each parameter since the device was last reset or powered on.
7. Understanding WBGT and Color-Coded Alerts
The WBGT meter translates OSHA guidelines into a simple, color-coded alert system to indicate heat stress risk levels.
Figure 4: Color-coded WBGT alert levels and associated precautions.
| Gamma WBGT | Color de pantalla | Workforce Precautions |
|---|---|---|
| < 80.0°F / < 26.6°C | Gris | Basic heat safety training and planning. |
| De 80.1 a 84.9 °C / 26.7 a 29.3 °F | Verd | Implement precautions and heighten awareness. |
| De 85.0 a 87.9 °C / 29.4 a 31.0 °F | Taronja | Additional precautions are necessary to protect workers. |
| De 88.0 a 89.9 °C / 31.1 a 32.1 °F | Vermell | Analysis of activity level is necessary to protect workers. |
| > 90.0°F / > 32.2°C | Vermell intermitent | Triggers even more aggressive protective measures. |
The meter also features an optional audible alarm that activates when heat stress levels reach dangerous thresholds, providing an immediate alert in high-risk environments.
Figure 5: The meter indicating an audible alarm for high heat stress.
8. Manteniment
8.1 Neteja
Netegeu l'exterior del mesurador amb un drap suau iamp cloth. Do not use abrasive cleaners or solvents. Ensure no liquid enters the sensor areas or battery compartment.
8.2 Emmagatzematge
When not in use, store the meter in its protective sleeve in a cool, dry place, away from direct sunlight and extreme temperatures. Remove batteries if storing for extended periods.
Figure 6: The meter is durable and portable, suitable for handheld use or tripod mounting.
9. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| El mesurador no s'encén. | Piles gastades o instal·lades incorrectament. | Comproveu la polaritat de la bateria. Substituïu-la per piles AAA noves. |
| Lectures inexactes. | Sensors are obstructed or dirty. Meter not stabilized. | Ensure sensors are clean and unobstructed. Allow meter to stabilize in the environment for a few minutes before taking readings. |
| La pantalla està tènue o parpelleja. | Potència de bateria baixa. | Substituïu les 4 piles AAA. |
| L'alarma audible no sona. | Alarm function is disabled or volume is too low. | Check settings via the SET button to ensure the alarm is enabled and set to an audible level. |
10. Especificacions
- Número de model: 801038
- Marca: Sper Scientific
- Tipus de visualització: Digital LCD with Color-Coded Backlight
- Font d'alimentació4 piles AAA (incloses)
- Dimensions del producte: 12 x 3 x 1.5 polzades
- Pes: 11 unces
- Material exterior: Plàstic
- WBGT Measurement Range: Varies by mode and environmental conditions.
- Interval de temperatura de l'aire: de 0 a 50 °C (32 a 122 °F)
- Globe Temperature Range: de 0 a 80 °C (32 a 176 °F)
- Interval d'humitat relativa: 5% a 90% HR
- Compliment: OSHA-compliant heat risk alerts
- Connectivitat: USB (for data logging, if applicable - Note: Specific USB functionality details may require further manual consultation.)
