Portable Trolley-Type SF6 Quantitative Leak Detector for GIS Inspection & Field Leak Testing

Product Overview

The LF-302 Portable Trolley-Type SF6 Leak Detector is an upgraded portable SF6 quantitative leak testing device developed for GIS inspection, electrical maintenance and mobile field service applications.

The detector features touch screen ppm display with a minimum resolution of 0.01 ppm for accurate quantitative leak analysis.

It supports both qualitative leak detection and quantitative leak detection, enables accurate calculation of annual leakage rate, and is suitable for bagging method leak testing.

Based on the LF-301 platform, the LF-302 improves mobility, battery endurance and field operation convenience for engineers performing outdoor SF6 leak inspection work.

The detector adopts high-frequency magnetic field and low-voltage ionization technology to provide accurate SF6 micro leak detection without radioactive sources.

Its trolley-style structure and retractable handle design make transportation easier during substation inspection and switchgear maintenance applications.

The detector supports customizable alarm settings and provides real-time ppm display with high sensitivity up to 0.01 ppm.

A PM1.0 protection filter installed at the detector head helps prevent dust contamination and improves long-term detection stability in industrial environments.

Why Portable SF6 Leak Detection Is Essential

GIS switchgear maintenance and substation inspection often require engineers to perform leak detection across large industrial sites.

Traditional leak detectors may be inconvenient to transport or unsuitable for long-duration outdoor inspection tasks.

Portable SF6 leak detection equipment must provide stable performance, easy mobility and sufficient battery operating time for field applications.

Environmental dust, transportation vibration and complex working conditions may also affect inspection efficiency during daily maintenance work.

A portable trolley-type SF6 quantitative leak detector can therefore improve mobility, operational efficiency and leak detection reliability for field engineers.

LF-302 Portable SF6 Leak Detection Solution

The LF-302 is designed to provide convenient mobile SF6 leak testing for industrial maintenance and outdoor inspection environments.

The retractable trolley structure allows operators to easily transport the equipment during field inspection tasks.

Compared with the LF-301, the LF-302 offers approximately 50% longer lithium battery operating time for extended outdoor use.

The detector adopts dual-stage customized oil vacuum pump technology to improve gas sampling efficiency during leak testing.

Its high-sensitivity detection system can identify SF6 leakage concentrations as low as 0.01 ppm.

The detector supports customizable alarm thresholds within the full measurement range for flexible inspection requirements.

Real-time ppm values are displayed directly on the screen, while audible alarm frequency changes according to leak concentration levels.

The PM1.0 filter protection system helps prevent dust blockage and maintains stable detector performance during long-term industrial use.

The detector sensor contains no consumable components and provides service life up to 5–10 years.

Specifications

The LF-302 combines portable trolley mobility, extended battery endurance and high-sensitivity leak detection for GIS inspection and outdoor SF6 maintenance applications.

Applications of LF-302 SF6 Leak Detector

The LF-302 SF6 leak detector is widely used in GIS switchgear maintenance, substation inspection and industrial SF6 leak testing applications.

Typical applications include outdoor electrical inspection, gas-insulated switchgear servicing, power utility maintenance and mobile leak testing projects.

Its trolley-style portable structure makes it suitable for engineers requiring frequent equipment transportation between inspection locations.

The detector is also suitable for switchgear manufacturers, maintenance contractors and power utility service teams.

Its long sensor lifespan and portable industrial design improve reliability during continuous field operation.

How the Portable SF6 Leak Detector Works

The LF-302 continuously samples surrounding air through its dual-stage vacuum pump system during leak testing operation.

Using high-frequency magnetic field and low-voltage ionization technology, the detector analyzes trace SF6 gas concentration in real time.

When SF6 leakage is detected, ppm concentration values are displayed directly on the screen.

The audible alarm frequency changes automatically according to leakage concentration levels to assist operators during inspection.

The PM1.0 filter protection system helps prevent dust contamination and maintains stable detection accuracy.

Its rapid recovery capability allows the detector to quickly return to normal operation after exposure to high SF6 concentration environments.

Key Features

Portable Trolley Structure

Retractable handle and trolley-style design improve transportation convenience during field inspection.

Extended Battery Endurance

Lithium battery operating time increased by approximately 50% compared with LF-301.

High-Sensitivity Leak Detection

Accurate SF6 leak detection with sensitivity up to 0.01 ppm.

Adjustable Alarm Function

Customizable leak alarm threshold settings for different inspection requirements.

Long Sensor Service Life

Sensor lifespan up to 5–10 years without consumable components.

Dust Protection System

PM1.0 filter protection helps prevent dust blockage and performance reduction.

How To Choose a Portable SF6 Leak Detector

Choosing a portable SF6 leak detector depends on inspection mobility, battery endurance and leak detection sensitivity requirements.

For substation maintenance and GIS outdoor inspection work, trolley mobility and lightweight transportation become important factors.

Users should also consider battery operating time, vacuum pump efficiency and environmental protection capability during equipment selection.

Field inspection applications may require adjustable alarm settings and rapid recovery capability for efficient operation.

For long-term industrial use, sensor lifespan and low maintenance requirements are also important considerations.

The LF-302 is recommended for customers requiring portable trolley-style operation and high-sensitivity SF6 leak detection capability.

Why Choose KSTONE

Industry Status of KSTONE:

KSTONE is one of the drafting institutions for the national standard GB/T 11023-2018 High-voltage switchgear—SF₆ gas tightness test method.

Portable Trolley Mobility

Retractable handle structure for convenient field transportation.

Extended Battery Runtime

Longer lithium battery endurance for outdoor inspection applications.

High-Sensitivity Detection

Accurate SF6 micro leak detection down to 0.01 ppm.

Reliable Industrial Design

Long sensor lifespan with dust protection and stable operation.

FAQ

What is the difference between LF-302 and LF-303?

• The LF-302 uses a dual-stage oil vacuum pump, while the LF-303 uses an oil-free vacuum pump.

Is the LF-302 suitable for outdoor field inspection?

• Yes. Its trolley-style portable structure and battery power support make it suitable for outdoor inspection work.

What is the detection sensitivity of the LF-302?

• The detector provides SF6 leak detection sensitivity up to 0.01 ppm.

Does the detector contain radioactive sources?

• No. The LF-302 adopts non-radioactive high-frequency magnetic field detection technology.

How long is the sensor service life?

• The detector sensor lifespan is typically 5–10 years under normal industrial operating conditions.

Request a Quote for Portable SF6 Leak Detection Equipment

Send us your technical requirements and inspection applications.

Our engineering team will provide a suitable SF6 leak detection solution within 24 hours.

Email: info@kstone-sf6.com