Table of Contents

Product Introduction

Working principle: When the concentration of sulfur hexafluoride in the air changes, the ionization degree of the mixed gas under high-frequency electromagnetic field varies accordingly. The SF6 concentration can be reflected by detecting ionization degree.

The instrument is equipped with a miniature vacuum pump, and the probe is separated from the main unit. It features compact size, light weight, easy portability, high sensitivity, good stability and fast response. The probe will not be poisoned and no toxic gas will be generated. An LCD screen displays gas concentration for convenient and accurate readings.

This detector adds an alarm setting function. It will trigger an audible alarm automatically when the measured gas concentration reaches or exceeds the preset value.

It is specially designed for power industry, railway, electrical manufacturing, chemical industry, fire equipment, atomic physics research and other sectors to inspect SF6-filled equipment and containers. It enables rapid and accurate qualitative and quantitative leak detection.

Technical Data

Item	Specifications
Measuring Range (SF6)	0.01ppm ~ 500ppm (volume ratio)
Response Time	≤ 3 seconds
Indication Mode	LCD digital display, audible and visual alarm
Alarm Setting Range	0.01ppm ~ 500ppm (volume ratio)
Vacuum Pump Pumping Speed	1 L/s
Vacuum Pipeline Length	4 m
Continuous Working Time	≤ 4 hours
Power Supply	AC 220V 50Hz
Ambient Temperature	7℃ ~ 40℃
Relative Humidity	≤ 85%
Power Consumption	Approx. 180W
Total Weight	Approx. 18 Kg

Key Features

Features	Description
Separate probe design	Split structure of main unit and probe, easy to carry and operate
High performance index	Fast response within 3s, measuring range 0.01~500ppm
Adjustable alarm threshold	Customizable concentration alarm value with audible & visual alert
Safe detection	Probe anti-poisoning, no toxic gas generated during testing
Intuitive reading	LCD digital real-time display of SF6 concentration
Built-in vacuum pump	1L/s pumping speed, equipped with 4-meter sampling pipeline

FAQ — SF6 Gas Quantitative Leak Detector

Q1: What is the working principle of this SF6 quantitative leak detector?

A: Under high-frequency electromagnetic field, different SF6 concentration leads to different gas ionization levels. The instrument detects ionization degree to calculate SF6 concentration in the air.

Q2: Where is this detector widely used?

A: Suitable for power grid, railway, electrical manufacturing, chemical industry and scientific research. It performs qualitative and quantitative leak inspection for SF6-filled switchgear, GIS and pressure vessels.

Q3: What is the measuring range for SF6?

A: Measuring range: 0.01ppm ~ 500ppm (volume ratio).

Q4: How fast is the response speed?

A: Response time ≤ 3 seconds, realizing rapid on-site leak searching.

Q5: Can I set the alarm concentration freely?

A: Yes. The alarm threshold can be adjusted within 0.01ppm ~ 500ppm. Audible and visual alarm will activate once concentration reaches the set value.

Q6: What is the structure form of the instrument?

A: Split design; the probe is separated from the main unit for flexible operation.

Q7: What are the parameters of the built-in vacuum pump?

A: Pumping speed: 1 L/s, matched with 4-meter sampling pipeline.

Q8: Will the probe be poisoned during long-term testing?

A: The probe supports anti-poisoning performance, and no toxic gas will be generated in the detection process.

Q9: How long can the instrument work continuously?

A: Continuous working time ≤ 4 hours.

Q10: What are the power supply and working environment requirements?

A: Powered by AC 220V 50Hz. Ambient temperature: 7℃~40℃, relative humidity ≤85%.

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HF-WC-639 SF6 Gas Quantitative Leak Detector