Portable SF6 Gas Purity and Dew Point Analyzer

Place of Origin SHANGHAI
Brand Name KSTONE
Certification ISO9000
Model Number KS-30CSR
Document KS30-CSR.pdf
Minimum Order Quantity 1
Payment Terms T/T
Product Details
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Product Description
Portable SF6 Gas Purity and Dew Point Analyzer

KS-30CSR

Product Overview

The KS-30CSR SF6 Gas Analyzer is a professional portable instrument designed for accurate measurement of SF6 gas purity and dew point in high-voltage electrical equipment.

SF6 gas is widely used as an insulating medium in gas-insulated switchgear (GIS), circuit breakers, and substations. The gas quality directly affects the insulation performance and operational safety of electrical equipment. Moisture contamination or reduced gas purity can significantly decrease insulation strength and lead to partial discharge or equipment failure.

The KS-30CSR analyzer integrates SF6 purity measurement, dew point detection, pressure monitoring, and gas pump-back recovery in one portable device. Using advanced constant-temperature and adiabatic chamber technology, the instrument reduces the influence of ambient temperature and humidity, ensuring highly stable and accurate measurement results.

The device is designed for field testing and maintenance, allowing engineers to quickly analyze SF6 gas quality inside GIS equipment without releasing gas into the atmosphere. The built-in pump-back system returns the sampled gas back to the equipment after testing, preventing gas loss and supporting environmentally responsible maintenance operations.

Because of its high accuracy, portability, and integrated functions, the KS-30CSR analyzer is widely used by power utilities, switchgear manufacturers, electrical service companies, and high-voltage equipment maintenance teams.

Key Features
High-Precision Dew Point Measurement

The analyzer measures dew point in the range of -80°C to +20°C, enabling precise detection of moisture contamination in SF6 gas systems. Maintaining proper dew point levels is critical for ensuring insulation reliability in GIS equipment.

Accurate SF6 Gas Purity Analysis

The device measures SF6 gas purity from 0% to 100% with an accuracy of ±0.1%. This ensures that the insulating gas inside electrical equipment meets required technical standards.

Built-in Gas Pump-Back System

The KS-30CSR analyzer includes a gas recovery function that pumps the sampled gas back into the equipment after testing. This feature prevents unnecessary SF6 emissions and reduces gas consumption during maintenance.

Constant-Temperature Measurement Chamber

The internal constant-temperature and adiabatic design minimizes environmental influence, ensuring consistent measurement accuracy even in challenging field conditions.

Portable Design for Field Operation

With a compact structure and durable design, the analyzer is suitable for substation testing, GIS maintenance, and on-site inspections.

Data Storage and USB Export

The instrument can store up to 200 measurement records and export data via USB for reporting and documentation.

Applications

The KS-30CSR SF6 gas analyzer is widely used in the power industry and related sectors.

GIS Switchgear Testing

Engineers can quickly measure SF6 gas purity and moisture inside gas-insulated switchgear to ensure the equipment operates within safe parameters.

Circuit Breaker Maintenance

The analyzer helps maintenance personnel verify gas quality inside SF6 circuit breakers during inspection and servicing.

Substation Inspection

Routine substation inspections require periodic SF6 gas testing to ensure proper insulation performance.

Switchgear Manufacturing

Switchgear manufacturers use SF6 gas analyzers during factory testing to ensure equipment is filled with high-quality insulating gas before delivery.

Electrical Service Providers

Maintenance companies performing field testing and diagnostics rely on portable gas analyzers for efficient service operations.

Technical Specifications
Item Details
SF6 Humidity
Measurement Range Dew point: -80~+20°C (Supports ppmv, etc.)
Dew Point Accuracy ±1°C (When the dew point temperature is lower than 0°C, the sensor output is the frost point)
Response Time 63%[90%]
+20→-20°C Td: 5s[45s]
-20→-60°C Td: 10s[240s]
Display Dew point: 0.1°C or 0.1ppm
Gas Flow Rate 0.25~0.35L/min
Equipped with an electronic mass flowmeter
No impact from the sample gas flow rate
Pressure Measurement 0~1.0MPa
Probe Protection Stainless steel sintered filter screen
SF6 Purity
Range 0~100% SF6
Accuracy and Repeatability ±0.1%, independent of flow rate
Response Time 30S
General Part
Operating Voltage 220VAC±10%, 50Hz. Both AC and DC available, can be customized according to customer requirement. Overcharge protection. Continuous working time is not less than 5 hours.
Storage Temperature Range -40~+70°C
Output Interface Compliant with USB1.1 specification
Data Storage Can store 200 records
Operating Environment Temperature: -30~+60°C
Pressure: 0~20bar
Sample Gas Flow Rate: No impact
Back Charge Pressure MAX: 0.7Mpa
Other Configurations Standard version management software, including report printing and commonly used humidity conversion toolkit
Dimensions 572×440×240mm
Weight 27kgs
Working Principle

The KS-30CSR analyzer performs SF6 gas analysis through a combination of advanced sensing technologies.

First, the instrument extracts a small gas sample from the equipment using a controlled flow system. The gas then enters the measurement chamber where specialized sensors analyze the gas composition.

The dew point sensor measures moisture content by detecting the temperature at which condensation occurs. Meanwhile, the SF6 purity sensor determines the concentration of SF6 gas relative to other gases present in the sample.

The analyzer also measures gas pressure to ensure proper sampling conditions. After the measurement process is completed, the built-in pump-back system returns the sampled gas to the equipment, minimizing environmental impact.

This integrated measurement process allows engineers to quickly determine whether the gas quality meets operational standards.

Advantages Compared with Conventional Gas Analyzers
Feature KS-30CSR Analyzer Conventional Analyzer
SF6 Purity Measurement
Dew Point Measurement
Gas Pump-Back Function
Portable Field Design Limited
Data Storage Limited

The integrated pump-back function and portable design make the KS-30CSR particularly suitable for field maintenance.

Why Dew Point Measurement Is Important in SF6 Systems

Moisture contamination in SF6 gas can significantly reduce the dielectric strength of high-voltage insulation systems. Excess moisture can lead to partial discharge, corrosion of internal components, and long-term reliability issues.

Maintaining a low dew point ensures that the SF6 gas remains dry and capable of providing optimal insulation performance. Regular testing using a reliable SF6 gas analyzer is therefore an essential part of preventive maintenance programs in power systems.


Target Industries

The KS-30CSR SF6 gas analyzer is widely used by organizations involved in high-voltage electrical equipment operation and maintenance.

Typical users include:

  • Power transmission and distribution utilities

  • Substation maintenance departments

  • High-voltage switchgear manufacturers

  • Electrical equipment service providers

  • Industrial gas testing laboratories

These organizations rely on precise SF6 gas analysis to ensure the reliability and safety of electrical infrastructure.


FAQ
What is the purpose of an SF6 gas analyzer?

An SF6 gas analyzer measures the purity and moisture content of SF6 gas used in high-voltage equipment. This ensures the gas maintains proper insulating properties.

Why is dew point important for SF6 gas?

Dew point indicates the moisture level in the gas. Excess moisture can reduce insulation strength and damage electrical equipment.

Can the analyzer return gas to the equipment after testing?

Yes. The KS-30CSR analyzer includes a built-in pump-back system that returns the sampled gas to the equipment.

Is the analyzer suitable for substation field work?

Yes. The portable design and durable structure make it ideal for on-site testing and maintenance.

How often should SF6 gas be tested?

Testing frequency depends on equipment standards and maintenance schedules, but many utilities perform periodic inspections annually or during major maintenance.


Download Resources

For more information about the KS-30CSR analyzer, please contact us to request:

  • Product Datasheet

  • User Manual

  • Calibration Certificate

  • Testing Report


Request a Quote

If you are looking for a reliable SF6 gas purity and dew point analyzer for GIS switchgear testing, please contact us for pricing and technical information.

Email: info@kstone-sf6.com