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LGR's Automated WBGT Monitoring

Setup Box
The Wet Bulb Globe Temperature (WBGT) is a comprehensive measure that accounts for heat, humidity, wind speed, and solar radiation to assess heat stress in outdoor environments.
In Singapore's tropical climate, construction workers are particularly vulnerable to heat-related illnesses.
Recognizing this, the Ministry of Manpower (MOM) has mandated that construction sites with contract sums of S$5 million or more must have on-site WBGT meters to monitor local conditions. (Cite MOM)By implementing WBGT monitoring, these sites can effectively schedule work and rest periods, ensuring worker safety and maintaining productivity.
Installation process
Install WBGT Unit
01
Easily set up the WBGT unit, powered by a solar panel and Edge Gateway for standalone operation.
Records hourly temperatures from 8 am to 5 pm, with alerts sent to supervisors at set intervals.
Automated Temperature Recording
02

Color-coded readings make it easy to view and compare temperatures across multiple sites, individually or collectively.
03
Standardized Temperature Coding
Locally tested and calibrated, WBGT data is accessible remotely, allowing easy monitoring from the office.
04
Eliminates Manual Data Recording

Dashboard
Monitor temperature records across multiple sites with our easy-to-use dashboard. Each project site is labeled for quick reference, displaying real-time temperature data with standardized color coding. Supervisors can view individual site details or compare data collectively to ensure optimal working conditions and compliance. Stay informed with hourly updates, accessible directly from your office.


How Color Coding Supports Safe Worksites
Our color-coded temperature levels provide an immediate visual guide to assess the current heat stress risk, allowing supervisors to take appropriate measures to safeguard worker health. With this system, supervisors can make informed decisions on work/rest cycles, hydration, and activity limits based on MOM’s heat stress standards.
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Each project site is clearly labeled and uses the same standardized color codes, ensuring consistency and easy recognition across multiple locations. This makes it simple to assess conditions, even across large-scale operations, and respond quickly to any heat stress risks.
Site-Wide Consistency
Supervisors and key personnel receive hourly updates and notifications, keeping them informed of any changes in heat stress levels across various sites. This proactive approach helps maintain compliance with MOM regulations and prioritize worker safety.
Automated Alerts and Notifications
Color Indicator
Good
Green
Normal
Yellow
At Risk
Orange - At Risk
Rest at set interval and hydrate
Red
Heat Stress Color Codes
Our system uses color-coded temperature levels to indicate heat stress risks for outdoor work, based on MOM guidelines.
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Yellow Zone (Moderate Risk) - 30°C to 32°C
Moderate heat stress risk. Encourage workers to increase hydration and monitor for signs of heat-related discomfort. Regular breaks are recommended.
Heat Stress Color Codes
Our system uses color-coded temperature levels to indicate heat stress risks for outdoor work, based on MOM guidelines.
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Orange Zone (High Risk) - 32°C to 35°C
High risk of heat stress. Implement additional rest periods, shade breaks, and close monitoring. Workers should hydrate frequently and limit prolonged exposure.
Heat Stress Color Codes
Our system uses color-coded temperature levels to indicate heat stress risks for outdoor work, based on MOM guidelines.
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Red Zone (Very High Risk) - 35°C to 38°C
Very high heat stress risk. Limit outdoor activity to essential tasks only. Strictly enforce frequent breaks, hydration, and monitor workers closely for signs of heat exhaustion.
Heat Stress Color Codes
Our system uses color-coded temperature levels to indicate heat stress risks for outdoor work, based on MOM guidelines.
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Green Zone (Safe) - Below 30°C
Temperature is in a safe range. Workers can continue with regular activities, maintaining hydration and taking routine breaks.
Alerts
WBGT send alert every hours in telegram and grafana .
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