China 63mm 2.5 SF6 Gas Density Monitor - China Suppliers & Factory for High-Voltage Equipment Safety Manufacturer, Factories

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The SF6 Gas Density Monitor, also referred to as the SF6 gas density indicator or SF6 gas density manometer, is a high-precision instrument specifically designed for monitoring the density of SF6 gas used in high-voltage electrical equipment. This device features automatic temperature compensation, dual alarm and lockout functions, and is widely utilized in various applications including GIS, circuit breakers, and transformers. With its manufacturing based in China, this product stands out among top suppliers and factories in the industry.

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Gas density is a critical parameter for the safe operation of high-voltage switchgears. Insufficient gas density can compromise the safety and functionality of electrical plants. Our SF6 gas density measuring instruments excel at detecting changes in gas volume, enabling reliable monitoring of potential leakages even under extreme environmental conditions.

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The SF6 gas density monitor is designed to be hermetically sealed and temperature-compensated, effectively preventing fluctuations and misinterpretations of measured values caused by variations in ambient temperature or atmospheric pressure. Users can easily read the pressure based on 20 °C [68 °F] directly on the on-site display, ensuring precise monitoring for safe and efficient operations.

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Product Description

Product Specifications
Nominal size: 63mm
Scale range: -0.1 to 0.1 MPa (customized range as per request)
Accuracy: 20℃: Class 1.0 or 1.6;
-20℃ to +60℃: Class 2.5;
-30℃ to -20℃: Class 3.0
Degree of protection: IP65
Ambient conditions: -30℃ to +60℃
Leakage rate: < 1*10-9 Pa.m³/s (Helium mass spectrometer)
Pressure connector: G1/4'', NPT 1/4'', M20*1.5 (customized)
Location: Center back
Electrical connection: Compact plug cable box with M20*1.5 cable gland
Cable size: 1.5mm; 2 recommended; 2.5mm maximum
Insulation properties: Insulation resistance >100 MΩ (500V DC);
Withstand voltage 2kV, 50/60 Hz 1 min (to case)
Contact type: Pointer driven magnetic snap action signal contacts;
80%Ag, 20%Ni, 10μm Au plated
Contact ratings: 30W/50VA, 1A max; 220VDC/380V 50/60Hz max
Window: Safety glass or instrumental glass
Weight: 0.5 KG
Core Characteristics and Advantages
Temperature Compensation: Automatically adjusts for thermal effects using bi-metal strips or digital sensors, providing stable readings at varying temperatures.
Dual Set Points: Configurable alarm and lockout contacts trigger signals when gas density drops below preset thresholds, enabling timely maintenance or system shutdown.
Robust Design: Available in all-stainless steel construction with optional oil filling for enhanced shock and vibration resistance.
Correctly Reflect Density Changes: By detecting whether SF6 gas is leaking. When a gas chamber leaks, the density indicated by the gas density meter decreases, triggering an alarm signal, alerting the operators to take timely measures to ensure operational safety.
Typical Application Fields
High-Voltage Circuit Breakers
Gas-Insulated Switchgear (GIS)
Transformers & Instrument Transformers
Guarding Electric Power Safety
Chemical Industry
Petroleum Industry
Pharmaceutical Industry
Frequently Asked Questions (FAQ)
Q What is the nominal size of this SF6 gas density meter?
The nominal size of this gas density meter is 63mm, making it compact and suitable for installation in various switchgear and circuit breaker applications.
Q What accuracy class does this gas density meter offer?
At 20℃, the meter achieves Class 1.0 or 1.6 accuracy. Over the range of -20℃ to +60℃ it meets Class 2.5, and from -30℃ to -20℃ it meets Class 3.0, ensuring reliable performance across a wide temperature range.
Q How does temperature compensation work in this meter?
The meter uses bi-metal strips or digital sensors to automatically adjust for thermal effects. This ensures that readings accurately reflect the actual SF6 gas density regardless of ambient temperature fluctuations.
Q What pressure connector options are available?
The meter supports G1/4'', NPT 1/4'', and M20*1.5 pressure connectors. Custom connector types can also be arranged upon request to suit specific installation requirements.
Q What industries and equipment is this gas density meter suitable for?
This meter is widely used in high-voltage circuit breakers, gas-insulated switchgear (GIS), transformers, instrument transformers, as well as in the chemical, petroleum, and pharmaceutical industries where SF6 gas monitoring is critical.
Q What is the degree of protection and leakage rate of this meter?
The meter carries an IP65 degree of protection, making it dust-tight and water-resistant. The leakage rate is less than 1×10-9 Pa·m³/s as measured by helium mass spectrometer, ensuring exceptional sealing performance.

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