
Industrial inspection equipment
Overview
The Manhole Cover Locator is a precision tool designed to quickly and accurately locate buried or hidden manhole covers made of ferrous materials. Using advanced magnetic detection technology, it helps utility workers, surveyors, and maintenance teams save time and effort by pinpointing metal covers even under soil, asphalt, or vegetation. Built for durability and reliability in tough field conditions, this locator offers clear audio and visual signals to ensure efficient operation. Ideal for water, sewer, and utility applications, it enhances safety, productivity, and accuracy in underground infrastructure maintenance. Infrastructure access recovery helps maintenance teams identify concealed service entry points reduce unnecessary excavation and restore faster access for repair inspection and emergency response activities.
Manhole Cover Locator is configured with Highest Sensitivity: Equipped with advanced HeliFlux® sensors capable of detecting ferrous objects up to 5.5m (18 ft) deep., Ergonomic & Durable Design: Engineered for comfort during extended use and built tough to withstand daily field conditions., and Dust & Water Resistant (IP54): Operates reliably in harsh environments including rain shallow water or snow. to support reliable day-to-day inspection work in demanding operating conditions.
Key technical details include AUDIO OUTPUT: Signal increases in frequency with gradient field intensity. Idle frequency 10Hz, DISPLAY OUTPUT: Expanding bar graph indicates polarity (positive or negative) and relative signal strength, BATTERY INDICATOR: 4-segment LCD, and GAIN: 4-Level LCD - Low (L), Medium (M), High (H), Extra High (XH), helping teams evaluate fitment, access requirements, and inspection coverage before deployment.
This product is suited to applications such as Oil & Gas, Municipal, and Power Plant, where repeatable imaging, measurement, or defect detection performance is important.
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| AUDIO OUTPUT | Signal increases in frequency with gradient field intensity. Idle frequency 10Hz |
| DISPLAY OUTPUT | Expanding bar graph indicates polarity (positive or negative) and relative signal strength |
| BATTERY INDICATOR | 4-segment LCD |
| GAIN | 4-Level LCD - Low (L), Medium (M), High (H), Extra High (XH) |
| GAIN MEMORY | Gain defaults to Medium when powering off/on |
| VOLUME | 3 Levels: Muted, Medium, and High |
| INPUT POWER | One 9V Battery |
| BATTERY LIFE | 24 Hours (intermittent use) |
| OPERATING TEMPERATURE | -13°F to 140°F (-25°C to 60°C) |
| OVERALL LENGTH | 32.5" (83cm) |
| NOMINAL SENSOR SPACING | 20" (50cm) |
| WEIGHT | Approximately 2.6 lbs (1.2kg) |
| CONSTRUCTION | High impact ABS |
| DUST & WATER PROTECTION | Rated IP54 |
Oil & Gas
Municipal
Power Plant
Construction
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Manhole covers frequently become concealed beneath asphalt overlays, concrete resurfacing, soil accumulation, landscaping, or road rehabilitation works. A Manhole Cover Locator enables maintenance teams to accurately locate hidden access points without unnecessary excavation, significantly improving maintenance efficiency while protecting underground utility infrastructure.
The system is extensively deployed across municipal utility operations and critical infrastructure maintenance programmes, including sewer network management, potable water distribution systems, stormwater drainage infrastructure, telecommunications networks, electrical utility corridors, smart city developments, highway expansion projects, and urban rehabilitation initiatives. Its capability to rapidly and accurately locate buried or obscured manhole covers enables engineering and utility professionals to optimize maintenance planning, facilitate safe access to underground assets, and minimize excavation-related disruptions throughout complex urban environments.
Precise identification of concealed manhole covers eliminates unnecessary exploratory excavation, minimizes road restoration expenses, shortens maintenance response times, reduces labour requirements, and improves coordination among multiple utility service providers operating within congested urban environments.
Yes. During emergency maintenance involving water supply failures, sewer blockages, electrical faults, or telecommunications outages, rapid identification of buried manholes allows maintenance personnel to access underground utility chambers quickly, reducing service restoration times and minimizing disruption to public infrastructure.
As urban utility networks become increasingly complex, accurate access point identification is critical for efficient infrastructure management. A Manhole Cover Locator enables municipalities, contractors, and utility operators to improve operational productivity, reduce excavation-related costs, enhance worker safety, and maintain uninterrupted public utility services across rapidly developing urban environments.