What is Wrindu SF6 Gas Purity Tester and How Does It Work?

The RDCDF-706 SF6 Gas Purity Tester is a highly advanced, portable instrument designed for measuring the purity of SF6 gas. This tester is essential for industries that use SF6 in high-voltage systems, such as electrical utilities, power stations, and more. It provides accurate results and ensures that SF6 gas meets the required purity standards, which is crucial for system reliability and safety.

Key Features of Wrindu SF6 Gas Purity Tester

Feature	Description
5.0″ TFT Touch Screen	Easy-to-use, intuitive touch screen design for clear, readable results.
High-Precision Imported Sensors	Imported sensors ensure accurate and repeatable measurements with a long lifespan.
32-Bit ARM MCU	Fast response speed and high precision provided by the 32-bit ARM microcontroller unit.
Separate Airway and Circuit Design	Separate designs for the air pathway and circuit to enhance the tester’s stability.
Anti-Pollution and Anti-Disturbance	Built-in features to ensure stable performance in polluted or noisy environments.
Compact and Portable	Weighs only 3.5kg, making it easy to carry and ideal for field use.
Dual-Power Supply	Supports both AC and DC power with an automatic switching feature and built-in overcharge protection.

Technical Specifications of Wrindu SF6 Gas Purity Tester

Specification	Details
Purity Measurement Range	0 to 100%
Accuracy	±1% purity
Resolution	0.1% purity
Repeatability	±0.5% purity
Pressure Range	0 ~ 1MPa
Gas Flow Rate	0.3 ~ 0.4L/min
Measuring Time	5 minutes
Operating Voltage	110 ~ 220VAC, AC and DC
Storage Temperature	-25 ~ +70°C
Operating Temperature	-25 ~ +60°C
Size	330 × 320 × 152 (mm)
Weight	3.5kg

Why Choose Wrindu SF6 Gas Purity Tester?

• Precise Measurement
  With an accuracy of ±1% and a high-resolution display, the RDCDF-706 delivers precise SF6 gas purity readings, critical for ensuring the optimal performance of electrical equipment.
• Easy to Use
  The instrument’s 5.0″ color LCD touch screen simplifies operation, allowing even users with minimal technical background to perform reliable tests.
• Portable and Convenient
  Its lightweight and compact design make it an excellent choice for on-site testing, ensuring that you can take it wherever needed.
• Durable and Reliable
  The high-quality components and advanced protection features of the RDCDF-706 ensure long-lasting performance, reducing the need for frequent maintenance or replacements.

Applications of the RDCDF-706 SF6 Gas Purity Tester

This tester is ideal for various applications where SF6 gas is used, including:

• Fault Location
  Quickly pinpoint problems in high-voltage systems by measuring the purity of the SF6 gas in the circuit.
• Routine Testing
  Regular checks to monitor gas purity and ensure the ongoing reliability of electrical equipment.
• Gas Filtration and Purification
  Monitoring the efficiency of gas purification systems and ensuring the SF6 gas remains within safe purity levels.
• Fault Checking of High-Pressure Contacts
  Analyzing the condition of high-pressure components to prevent failure and improve system performance.

FAQs

My moisture readings are higher than expected. Is the gas contaminated?
A: It’s likely due to residual moisture in the equipment, not the gas itself. Moisture sensors often need 1-2 initial tests to clear out any leftover moisture in hoses, fittings, or the sensor housing. Make sure to use Teflon-lined hoses with stainless steel fittings, as rubber hoses can introduce moisture.

Why does the purity reading drop after I pump gas back into the breaker?
A: Re-injecting the gas disrupts the internal environment, causing moisture to re-enter the system. Avoid retesting for at least 24 hours after a pump-back operation. If immediate testing is needed, use a gas recovery bag instead of pumping the gas back into the breaker.

How often should I calibrate my SF6 tester?
A: You should calibrate your tester every 12 to 24 months, depending on usage. A maximum of two years between calibrations is recommended to prevent sensor drift. Modular sensor designs are preferred for easier maintenance and to avoid long downtimes for calibration.

How can I verify a purity reading that seems inaccurate?
A: Use a certified calibration gas cylinder to verify the reading. It’s best to take 3–5 tests and average the results. If readings still seem off, test with a known SF6 mixture (e.g., 98% purity) to see if the tester is within the expected tolerance, which is typically ±0.5%.

Are there any operational hazards I should be aware of during testing?
A: Be cautious of toxic byproducts like Sulfur Dioxide (SO2), which can be created during arcing in equipment. Always wear personal protective equipment (PPE) and avoid inhaling the gas. Make sure the analyzer safely handles the gas, either into a recovery bag or back into the system, to avoid oxygen displacement in confined spaces.

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