NOY NHJ600 Portable Helium Mass Spectrometer Leak Detector
| Brand | NOY |
|---|---|
| Origin | Anhui, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | NHJ600 |
| Instrument Type | Portable |
| Detection Method | Vacuum Mode |
| Minimum Detectable Leak Rate | 3×10⁻¹³ Pa·m³/s |
| Startup Time | ≤90 s |
| Response Time | ≤0.5 s |
| Maximum Pressure at Test Port | ≤2000 Pa |
| Leak Rate Display Range | 1×10⁻² to 1×10⁻¹³ Pa·m³/s |
Overview
The NOY NHJ600 Portable Helium Mass Spectrometer Leak Detector is a compact, field-deployable analytical instrument engineered for high-sensitivity leak detection in vacuum systems across semiconductor fabrication, aerospace assembly, cryogenic equipment manufacturing, and R&D laboratories. It operates on the principle of helium mass spectrometry—ionizing helium atoms introduced into a vacuum test environment, separating ions via a 180° non-uniform magnetic sector mass analyzer, and quantifying ion current proportional to helium concentration. This enables trace-level leak identification down to 3×10⁻¹³ Pa·m³/s under optimized vacuum conditions. Unlike fixed-base systems, the NHJ600 integrates a miniaturized turbomolecular pumping station with integrated forepump, enabling rapid system evacuation and stable base pressure attainment (<1×10⁻⁴ Pa) within 90 seconds. Its architecture adheres to fundamental vacuum metrology principles defined in ISO 20485 (Leak detection — Vocabulary) and supports traceable calibration protocols aligned with ASTM E493 and ISO 10715.
Key Features
- Portable, battery-assisted operation with integrated vacuum manifold and dual-stage pumping system (turbomolecular + diaphragm forepump)
- 180° non-uniform magnetic sector mass analyzer providing stable mass resolution for 4He+ at m/z = 4, minimizing interference from hydrogen isotopes and hydrocarbon fragments
- Automatic helium peak scanning, zero-point compensation, and dynamic range switching across 11 decades (1×10⁻² to 1×10⁻¹³ Pa·m³/s)
- Dedicated handheld remote control unit with up to 150 m operational range, supporting real-time leak localization without physical proximity to the main unit
- Wi-Fi-enabled connectivity with NOY SmartLeak™ mobile application (iOS/Android), enabling remote monitoring, parameter configuration, and data export in CSV or PDF formats
- Front-panel metal tactile keys for glove-compatible operation in cleanroom or industrial environments; IP54-rated enclosure for dust and splash resistance
Sample Compatibility & Compliance
The NHJ600 is designed for quantitative leak assessment of sealed components under vacuum mode—including vacuum chambers, RF cavities, superconducting magnets, MEMS packages, and hermetic electronic enclosures. It complies with standard helium leak testing workflows per ISO 10715 and ASTM E493-22. The test port accepts standard CF-16, KF-25, and ISO-KF flanges; maximum allowable inlet pressure is 2000 Pa to maintain analyzer stability and prevent detector saturation. All firmware and embedded control logic are developed in accordance with IEC 61508 functional safety guidelines for measurement instruments. Audit trails, user access levels, and electronic signature support can be enabled to meet GLP/GMP documentation requirements per FDA 21 CFR Part 11 when configured with optional software modules.
Software & Data Management
The NHJ600 runs on a real-time Linux-based embedded OS with deterministic interrupt handling for sub-500 ms response latency. Its proprietary NOY SmartLeak™ software suite provides full instrument control, spectral visualization, trend logging, and customizable pass/fail thresholds. Data files include timestamped leak rate values, pump status, background signal history, and calibration metadata. Export formats include ISO-standard .csv (with SI units and uncertainty annotations) and printable PDF reports compliant with ISO/IEC 17025 documentation templates. For integration into factory automation systems, the device supports Modbus TCP and OPC UA communication protocols. Custom firmware development and API integration (RESTful JSON interface) are available under NDA for OEM and system integrator partners.
Applications
- On-site validation of vacuum integrity in particle accelerator beamlines and fusion reactor diagnostics ports
- Field verification of hermeticity in space-grade optical sensor housings and satellite thermal control systems
- Quality assurance during final assembly of high-vacuum deposition tools (PVD, CVD) and electron-beam welds
- Rapid failure analysis in university and national lab vacuum test stands, including UHV (<10⁻⁸ Pa) chamber commissioning
- Regulatory-compliant leak auditing for medical device packaging (ISO 11607) and pharmaceutical lyophilizer door seals
FAQ
What vacuum level is required for optimal sensitivity?
A base pressure below 1×10⁻⁴ Pa is recommended prior to helium introduction; sensitivity degrades above 5×10⁻³ Pa due to increased background ion noise.
Can the NHJ600 detect leaks in pressurized mode?
No—the NHJ600 is configured exclusively for vacuum-mode detection. Pressurized (sniffer) mode requires separate hardware architecture and is not supported.
Is helium calibration gas included with the instrument?
A certified 10% He/N₂ calibration standard (NIST-traceable) is supplied with initial delivery; annual recalibration services are available through NOY’s CNAS-accredited calibration lab.
How is data security managed during Wi-Fi transmission?
All wireless communications use TLS 1.2 encryption; local network isolation mode disables external routing by default to prevent unauthorized access.
What maintenance intervals are recommended?
Turbomolecular pump oil replacement every 8,000 operating hours; filament replacement every 12 months or after 500 leak tests—whichever occurs first. Full system verification is advised annually per ISO/IEC 17025 Clause 6.4.
