Table of Contents

Function Introduction

The HF-WC-640 SF6 Gas Analyzer integrates SF6 humidity, SF6 purity and SF6 decomposition product measurement into one unit. It combines functions that previously required three separate instruments. One on-site measurement can complete three-index detection, greatly saving SF6 gas consumption, reducing workload and improving efficiency.

It adopts imported sensors: high-precision imported humidity sensor, temperature-compensated thermal conductivity sensor for purity measurement, and European imported sensors for decomposition products. Equipped with color LCD, real-time parameter display, full touchscreen operation, massive data storage and built-in rechargeable battery, supporting both AC and DC power supply.

Technical Features

Auto-calibration: The sensor probe can automatically calibrate zero point, eliminating systematic errors caused by zero drift and ensuring measurement accuracy.
User-friendly operation: Large touch LCD screen, intuitive and straightforward operation.
Gas-saving design: Approximately 3 minutes for SF6 dew point measurement after entering measurement mode.
Self-locking connector: German self-locking fitting, safe, reliable and leak-free.
Data storage: Large-capacity storage supporting up to 1000 groups of test records.
Clear display: 7-inch large touch LCD shows dew point, moisture (ppm), SF6 purity, SO₂, H₂S, CO, ambient temperature, ambient humidity, time and date.
Built-in large-capacity rechargeable lithium battery, supporting 12 hours continuous operation after full charge.

Technical Parameters

Item	Specifications
Purity	Measuring range: 0%~100% Accuracy: ±0.5% Measuring time: <2 min
Dew Point	Measuring range: -80 ℃ ~ +20 ℃ Accuracy: ±0.5 ℃ (-80 ℃ ~ -60 ℃) Response time: (-60 ℃ ~ +20 ℃): 63% within 5s, 90% within 45s (+20 ℃ ~ -60 ℃): 63% within 10s, 90% within 240s
H₂S	Measuring range: 0~200 ppm Minimum detectable limit: ≤0.1 ppm Accuracy: ±0.5% Stability: 0~200 ppm Repeatability: ≤2%
SO₂	Measuring range: 0~200 ppm Minimum detectable limit: ≤0.1 ppm Accuracy: ±0.5% Stability: 0~200 ppm Repeatability: ≤2%
CO	Measuring range: 0~1000 ppm Minimum detectable limit: ≤1 ppm Accuracy: ±0.5% Stability: 0~1000 ppm Repeatability: ≤2%
HF (Optional)	Measuring range: 0~20 ppm Minimum detectable limit: ≤0.01 ppm Accuracy: ±0.5% Stability: 0~20 ppm Repeatability: ≤2%
Ambient Temperature	-40 ℃ ~ +60 ℃
Ambient Humidity	0 ~ 100% RH
Power Supply	AC 100–240V 50/60Hz Built-in rechargeable battery
Battery Performance	Charging time: 10 hours; Continuous working time ≥12 hours
Operating Temperature	-30 ℃ ~ +70 ℃
Dimensions	250×230×300 mm
Weight	6.8 kg

Key Features (Two-column format for website)

Features	Description
All-in-one integrated tester	Simultaneously test SF6 purity, dew point and decomposition products
Imported high-quality sensors	Stable measurement for humidity, purity and decomposition gases
Automatic zero calibration	Eliminate drift error and guarantee consistent accuracy
7-inch touch LCD	Real-time display of all measured parameters and date information
German self-locking gas fitting	No leakage during sampling measurement
Large storage capacity	Save up to 1000 groups of test data
Dual power supply mode	AC mains + built-in lithium battery, 12h continuous operation
Portable design	Compact size, weight only 6.8 kg for field testing

FAQ — SF6 Gas Analyzer

Q1: What is the function of this SF6 Gas Analyzer?

A: It is an all-in-one tester integrating SF6 purity, dew point humidity and decomposition gas measurement. One sampling can complete three major detection items to save SF6 gas and improve field work efficiency.

Q2: What decomposition gases can it detect?

A: Standard items: SO₂, H₂S, CO. HF detection is available as an optional module.

Q3: What kind of sensors are equipped?

A: It adopts imported high-precision humidity sensor, temperature-compensated thermal conductivity sensor for purity, and European imported sensors for decomposition products to ensure stable and reliable test results.

Q4: What is the measuring range of SF6 purity?

A: Measuring range: 0%~100%, measurement accuracy ±0.5%, measuring time less than 2 minutes.

Q5: What is the dew point measuring range and response speed?

A: Dew point range: -80℃ ~ +20℃. Accuracy ±0.5℃ within -80℃ ~ -60℃. The response time varies according to temperature interval.

Q6: What are the minimum detectable limits for decomposition gases?

A: SO₂, H₂S: ≤0.1 ppm; CO: ≤1 ppm; optional HF: ≤0.01 ppm. All repeatability ≤2%.

Q7: Does the instrument support automatic calibration?

A: Yes. The probe can automatically calibrate zero point and eliminate systematic error caused by zero drift to guarantee measurement accuracy.

Q8: How long does dew point measurement take?

A: After entering measurement status, it takes about 3 minutes to complete SF6 dew point testing.

Q9: Is the gas connector leak-proof?

A: It adopts German self-locking connector, safe and reliable without air leakage.

Q10: What information can be displayed on the screen?

A: 7-inch touch LCD shows dew point, moisture value, SF6 purity, SO₂, H₂S, CO, ambient temperature, humidity, time and date.

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HF-WC-640 SF6 Gas Analyzer