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Metal Locator FM90

9.7 kHz high-frequency transmission|27 cm search coil|Detects Ø18 cm metal objects up to approx. 60 cm deep|Audio tone + pointer display|Adjustable handle|Weight 1.7 kg.

Product Features
  • High-Frequency Metal Detection: 9.7 kHz transmission frequency for locating buried metal objects.
  • 27 cm Search Coil: Provides stable detection coverage and improves search efficiency.
  • Detection Depth: Detects Ø18 cm metal objects up to approx. 60 cm deep.
  • Dual Indication System: Audio tone and pointer display help confirm the object location.
  • Adjustable Handle: Length can be adjusted according to user height and jobsite needs.
  • Lightweight Portable Design: Approx. 1.7 kg for comfortable field operation.
  • Multi-Application Use: Suitable for locating underground pipes, manhole covers, valve boxes, meter boxes, and other buried metal objects.
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Model Specifications

SKU
Model
Description
Weight
Remarks
F90M
F90M
Amplifier and sensing detector are integrated into a single unit.
1.7 kg

Product Details

Product Overview
Underground Metal Detector
This professional underground metal detector is designed for locating buried metal pipes, valve boxes, meter boxes, manhole covers, and other metallic objects below ground. With a 9.7 KHz transmission frequency and a 27 cm search coil, it helps construction and maintenance professionals quickly identify buried metal targets, reducing blind excavation, misjudgment, and jobsite risk.
Product Type
Underground metal detector
Transmission Frequency
9.7 KHz
Search Coil Diameter
27 cm
Detection Depth
Object with 18 cm diameter can be detected up to approx. 45 cm deep
Search Coil Size
270 × 25 mm
Main Unit Size
170 × 195 × 60 mm
Weight
1.7 kg
The Value of On-Site Detection Is Not Just Finding Metal — It Is Avoiding Blind Excavation

When buried metal objects are not clearly located, construction delays, incorrect excavation, or damage to existing facilities may occur. A metal detector helps identify metal pipes, valve boxes, meter boxes, manhole covers, and related objects before excavation, allowing professionals to better understand site conditions and reduce operational risk.

Features
Product Features
Built around a 9.7 KHz transmission frequency, 27 cm search coil, lightweight body, and professional field detection, this detector is suitable for construction, maintenance, pipeline inspection, and buried metal object location work.
9.7 KHz Transmission Frequency

Supports field metal detection and helps identify buried metal target locations.

27 cm Search Coil

The 27 cm coil is suitable for ground scanning and buried metal object searching.

Detects Medium-Sized Metal Objects

An object with an 18 cm diameter can be detected up to approx. 45 cm deep.

1.7 kg Lightweight Design

Lightweight body supports field inspection, longer scanning work, and multi-point movement.

Useful Before Excavation

Helps confirm underground metal object locations before digging or drilling.

Professional Field Use

Suitable for construction, maintenance, pipeline inspection, and metal object locating tasks.

Applications
Applications
Suitable for detecting buried metal objects, locating underground metal pipes, valve boxes, meter boxes, manhole covers, and supporting construction, maintenance, and inspection work in professional field environments.
Underground Metal Pipe Location

Can be used to locate buried metal pipes before construction or excavation work.

Valve Box and Meter Box Search

Suitable for finding valve boxes and meter boxes hidden under soil, pavement, or covers.

Manhole Cover Location

Helps locate covered or hard-to-identify manhole covers and related metal facilities.

Pre-Excavation Detection

Can be used before digging or drilling to reduce incorrect excavation and facility damage risk.

Maintenance and Inspection

Suitable for pipeline maintenance, site inspection, and underground facility confirmation.

Professional Engineering Sites

Suitable for plumbing, civil engineering, pipeline, roadwork, and utility professionals.