NHJ-800 Helium Mass Spectrometer Leak Detector

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NHJ-800 Helium Mass Spectrometer Leak Detector

Product ID：HZhzp009

Price: US$23,880.00 ~ US$39,880.00 PDF Format

Supply Ability:50 SETS/MON

Port:SHENZHEN

Product Introduction
Other information

Model NumberNHJ-800

Brand NameANHUINUOYI

Payment TermsTT，PAYPAL，Alibaba.com Pay

NHJ-800 Helium Mass Spectrometer Leak Detector
Product Overview
The NHJ-800 Helium Mass Spectrometer Leak Detector is a high-performance, oil-free dry pump mobile leak detection system designed for ultra-sensitive vacuum and sealing integrity testing. It utilizes advanced helium mass spectrometry technology to accurately detect extremely small leaks in industrial systems.
With a minimum detectable leak rate of 5×10⁻13 Pa·m³/s, the NHJ-800 delivers industry-leading sensitivity and stability. The system supports automatic calibration, automatic zeroing, and one-key startup, making it highly user-friendly and efficient for both laboratory and industrial environments.
Its dry pump design ensures zero oil contamination, making it suitable for high-purity applications such as semiconductor manufacturing, vacuum systems, refrigeration systems, aerospace components, and precision industrial equipment.

Key Features
• Oil-free dry pump design, no contamination risk
• Ultra-high sensitivity up to 5×10⁻13 Pa·m³/s
• Fast response time ≤ 1 second
• Quick startup ≤ 2 minutes
• Automatic zeroing and calibration
• Multi-unit display (Pa·m³/s, mbar·l/s, atm·cc/s, ppm)
• Real-time data output with Excel export capability
• Remote handheld control up to 150 meters
• Multiple over-leak protection modes
• Intelligent vacuum pressure monitoring with alarm system
• Strong anti-interference design (thermal & electromagnetic separation)
• High reliability and stable continuous operation
• Compatible with automated production systems

Working Principle
The NHJ-800 operates based on helium mass spectrometry leak detection technology. Helium gas is used as a tracer gas due to its small atomic size, inert properties, and low natural background concentration.
When helium enters a leaking system, it is drawn into the vacuum chamber of the leak detector through a high-efficiency pumping system. The mass spectrometer then separates helium ions based on their mass-to-charge ratio and quantifies the helium concentration.
The system converts the detected helium signal into a precise leak rate value, allowing real-time identification of micro-leaks. Advanced signal processing ensures high stability, while multiple protection modes prevent damage during large-leak conditions or sudden atmospheric exposure.

Technical Specifications

Parameter	Specification
Model	NHJ-800
Product Type	Helium Mass Spectrometer Leak Detector
Minimum Detectable Leak Rate	5 × 10⁻13 Pa·m³/s
Leak Rate Display Range	1 × 10⁻3 ~ 1 × 10⁻13 Pa·m³/s
Sniffer Probe Minimum Leak Rate	1 × 10⁻8 Pa·m³/s
Sniffer Display Range	1 × 10⁻3 ~ 1 × 10⁻9 Pa·m³/s
Startup Time	≤ 2 minutes
Response Time	≤ 1 second
Test Port Pressure	1500 Pa
Display Units	Pa·m³/s, mbar·l/s, atm·cc/s, ppm
Power Supply	220V ±10%, 50Hz
Operating Temperature	5°C – 40°C
Operating Humidity	≤ 80% RH
Weight	≤ 85 kg

Typical Applications
Vacuum Systems
• Vacuum chamber leak testing
• Semiconductor vacuum equipment
• High-vacuum system integrity testing
Refrigeration & HVAC Industry
• Refrigeration system leak detection
• Air conditioning pipeline testing
• Heat pump system sealing inspection
Automotive Industry
• Fuel tank sealing tests
• Airbag system leak detection
• Brake system airtightness testing
Aerospace & Defense
• Aircraft fuel system leak detection
• Spacecraft vacuum component testing
• High-precision sealing verification
Industrial Manufacturing
• Pressure vessel leak testing
• Pipeline and valve sealing inspection
• High-purity gas system verification
Energy & Power Industry
• Hydrogen system leak testing
• Gas storage tank inspection
• Nuclear and thermal power equipment sealing tests

NHJ-800 vs Conventional Leak Detectors

Feature	NHJ-800 Helium Leak Detector	Conventional Leak Tester
Detection Method	Mass Spectrometry (Helium)	Pressure decay / bubble
Minimum Leak Rate	5×10⁻13 Pa·m³/s	Much higher sensitivity limit
Contamination Risk	Oil-free dry pump	Oil-based systems possible
Response Time	≤1 second	Slower
Startup Time	≤2 minutes	Longer
Remote Control	150 m handheld control	Not available
Data Output	Excel + digital export	Limited
Automation Integration	Strong	Limited
Large Leak Protection	Multi-mode intelligent protection	Basic

FAQ
1. What is the NHJ-800 used for?
It is used for detecting extremely small leaks in vacuum systems, pipelines, refrigeration equipment, pressure vessels, and high-purity industrial systems.
2. Why is helium used for leak detection?
Helium has a very small atomic size, low background concentration in air, and excellent diffusion ability, making it ideal for detecting micro-leaks.
3. What is the advantage of a dry pump system?
A dry pump eliminates oil contamination, making the NHJ-800 suitable for clean and high-purity applications such as semiconductors and aerospace systems.
4. How sensitive is the NHJ-800?
It can detect leaks as small as 5 × 10⁻13 Pa·m³/s, providing ultra-high sensitivity for precision applications.
5. Does the system support automation?
Yes. It supports multi-mode I/O interfaces and can be integrated into automated production and testing lines.
6. Can data be exported?
Yes. The system supports real-time data display and direct export to Excel format for analysis and reporting.
7. How fast does it respond?
The response time is extremely fast, with detection results appearing within 1 second.

Why Choose NHJ-800?
The NHJ-800 Helium Mass Spectrometer Leak Detector delivers ultra-high sensitivity, oil-free operation, fast response, and advanced automation capabilities in a portable industrial system. With industry-leading detection performance down to 5×10⁻13 Pa·m³/s, intelligent protection modes, and remote control functionality, it is the ideal solution for precision leak testing in vacuum, refrigeration, aerospace, and high-end industrial manufacturing applications.

FAQ
1. What is the NHJ-800 used for?
It is used for detecting extremely small leaks in vacuum systems, pipelines, refrigeration equipment, pressure vessels, and high-purity industrial systems.
2. Why is helium used for leak detection?
Helium has a very small atomic size, low background concentration in air, and excellent diffusion ability, making it ideal for detecting micro-leaks.
3. What is the advantage of a dry pump system?
A dry pump eliminates oil contamination, making the NHJ-800 suitable for clean and high-purity applications such as semiconductors and aerospace systems.
4. How sensitive is the NHJ-800?
It can detect leaks as small as 5 × 10⁻13 Pa·m³/s, providing ultra-high sensitivity for precision applications.
5. Does the system support automation?
Yes. It supports multi-mode I/O interfaces and can be integrated into automated production and testing lines.
6. Can data be exported?
Yes. The system supports real-time data display and direct export to Excel format for analysis and reporting.
7. How fast does it respond?
The response time is extremely fast, with detection results appearing within 1 second.