NHJ480 Helium Mass Spectrometer Leak Detector

Universal Oil Pump Trolley Model

The NHJ480 is a fully automatic mobile helium mass spectrometer leak detector. With its simple structure and superior performance, the universal oil pump model NHJ480 is suitable for a wide range of industries.

NHJ480 Helium Mass Spectrometer Leak Detector

Universal Oil Pump Trolley Model

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Product Overview
NHJ480

Helium Mass Spectrometer Leak DetectorOil Pump

The NHJ480 is a general-purpose, fully automatic mobile helium mass spectrometer leak detector with a silent caster design, suitable for a wide range of demanding industries. Its unique gas circuit design enhances helium pumping speed, shortens helium background clearing time, and provides protection against contamination and dust.The 180°180 non-uniform magnetic field U-shaped magnet mass spectrometer chamber ensures stable signals and strong resistance to powerful magnetic interference.

The dual-iridium filament ion source offers oxidation resistance and extended service life. The mechanical and electrical isolation design prevents thermal drift and electromagnetic interference, ensuring stable and reliable operation. The large-leak protection mode prevents ion source oxidation and protects the molecular pump from atmospheric shocks.

Large-leak detection: automatic alarm when preset pressure is not reached. A handheld remote control unit (up to 150 meters) with WiFi connectivity supports APP remote control. Auto-zero and auto-range switching, real-time data updates, and direct Excel report generation. Customizable software, equipped with a 7-inch rotatable color touchscreen.

NHJ480 全自动移动式氦质谱检漏仪
Performance Features

Nine core performance features to handle the most demanding conditions.

From core mass spectrometer chamber to intelligent controls, the NHJ480 combines simple structure with stable performance to meet the fully automatic mobile leak detection needs of general industrial sites.

Universal Oil Pump Model
Mobile Silent Casters
Suitable for a Wide Range of Industries
Gas Circuit Design with Contamination Protection
Core Self-Developed Mass Spectrometer Chamber
Large-Leak Detection and Protection
WiFi + APP Remote Control
Dual-Iridium Filament Ion Source
7-inch Rotatable Touchscreen
Application Scenarios

Fully Automatic Mobile Leak Detection for General Industrial Sites

The NHJ480 is designed for fully automatic mobile leak detection in general industrial sites, with a focus on simple structure and stable performance. Its silent caster design ensures flexible positioning on site, while the optimized gas circuit and self-developed mass spectrometer chamber guarantee reliable operation even under demanding conditions, making it an ideal choice for a wide range of challenging industries.

Technical Specifications
NHJ480 Helium Mass Spectrometer Leak Detector Specifications
Technical Specifications Details / Model
Minimum Detectable Leak Rate 3×10¹³ Pa·m³/s Mechanical Pump Oil-Sealed Rotary Vane Pump
Vacuum Leak Rate Display Range (1×10² ~ 1×10¹³) Pa·m³/s Molecular Pump Genuine Import / Imported
Minimum Detectable Leak Rate (Sniffer Mode) 5×10-9 Pa·m³/s Solenoid Valve Custom-designed for imported leak detectors
Sniffer Leak Rate Display Range (1×10²~1×10-4) Pa·m³/s (zero) 7-inch Color Touchscreen ●
Detectable Gases ⁵He,³He,H₂ WIFI ○
Backing Pump Pumping Speed 16 m³/h Handheld Remote Unit (150 m) ○
Startup Time ≤90 s Sniffer ○
Response Time ≤0.5 s Large-Leak Detection Function ●
Leak Test Port Pressure ≤2000 Pa Large-Leak Protection Function ●
Main Unit Power Supply / Voltage (200~240)V,50Hz External Leak Standard ●
Operating Environment Temperature: (5–40)°C Humidity:≤80%RH Built-in Leak Standard ○
Language Chinese / English / Korean / Japanese / Thai / Hindi / Malay / Italian Data Storage / Data Saving ●
Dimensions (620*370*1027)mm Auto-Zero ●
Weight 110 kg Display Interface Graph, Histogram, and Numerical Display
Display Units Pa·m³/s、mbar·l/s、atm·cc/s、Torr·l/s、s、ppm Input/Output Interfaces RS232、RS485、USB
External Control I/O and Analog Output Interface
● Standard    ○ Optional

 

Multi-Product Comparison Parameters
Parameters NLD200 NHJ400M NHJ400 NHJ480 NHJ600(D) NHJ800D(L)
Minimum Detectable Leak Rate 3×10-13Pa·m3/s 3×10-13Pa·m3/s 3×10-13Pa·m3/s 3×10-13Pa·m3/s 3×10-13Pa·m3/s 3×10-13Pa·m3/s
Vacuum Leak Rate Display Range 1×10-2~1×10-13Pa·m3/s 1×10-2~1×10-13Pa·m3/s 1×10-2~1×10-13Pa·m3/s 1×10-2~1×10-13Pa·m3/s 1×10-2~1×10-13Pa·m3/s 1×10-2~1×10-13Pa·m3/s
Minimum Detectable Leak Rate (Sniffer) 5×10-9Pa·m3/s 5×10-9Pa·m3/s 5×10-9Pa·m3/s 5×10-9Pa·m3/s 5×10-9Pa·m3/s 5×10-9Pa·m3/s
Sniffer Leak Rate Display Range 1×10-2~1×10-9Pa·m3/s (zero) 1×10-2~1×10-9Pa·m3/s (zero) 1×10-2~1×10-9Pa·m3/s (zero) 1×10-2~1×10-9Pa·m3/s (zero) 1×10-2~1×10-9Pa·m3/s (zero) 1×10-2~1×10-9Pa·m3/s (zero)
Helium Pumping Speed 2.5L/s 2.5L/s 2.5L/s 2.5L/s 2.5L/s 2.5L/s
Detectable Gases 4He, 3He, H2 4He, 3He, H2 4He, 3He, H2 4He, 3He, H2 4He, 3He, H2 4He, 3He, H2
Start-up Time ≤90 s ≤90 s ≤90 s ≤90 s ≤90 s ≤90 s
Response Time ≤0.5 s ≤0.5 s ≤0.5 s ≤0.5 s ≤0.5 s ≤0.5 s
Leak Test Port Pressure ≤2000 Pa ≤2000 Pa ≤2000 Pa ≤2000 Pa ≤2000 Pa ≤2000 Pa
Valve Block / Yes Yes Yes Yes Yes
Display Screen Split-Type Split-Type Integrated Integrated Integrated Integrated
Backing Pump / / Oil Pump Oil Pump Oil Pump Dry Pump
Backing Pump Pumping Speed / / 16m3/h 16m3/h 2.5m3/h 15m3/h
Main Unit Power Supply / Voltage DC24V、240W DC24V、350W 100-120V、60Hz
200-240V、50Hz
100-120V、60Hz
200-240V、50Hz
100-120V、60Hz
200-240V、50Hz
100-120V、60Hz
200-240V、50Hz
Operating Environment Temperature:5-40°C
Humidity:≤80% RH
Temperature:5-40°C
Humidity:≤80% RH
Temperature:5-40°C
Humidity:≤80% RH
Temperature:5-40°C
Humidity:≤80% RH
Temperature:5-40°C
Humidity:≤80% RH
Temperature:5-40°C
Humidity:≤80% RH
Language Chinese / English / Korean / Japanese / Thai / Hindi / Malay / Italian / Hungarian Chinese / English / Korean / Japanese / Thai / Hindi / Malay / Italian Chinese / English / Korean / Japanese / Thai / Hindi / Malay / Italian Chinese / English / Korean / Japanese / Thai / Hindi / Malay / Italian Chinese / English / Korean / Japanese / Thai / Hindi / Malay / Italian Chinese / English / Korean / Japanese / Thai / Hindi / Malay / Italian
Dimensions 370×230×300 mm 420×275×359 mm 650×390×970 mm 620×370×1027 mm 620×370×480 mm 620×370×1027 mm
Weight 22 kg 26 kg 110 kg 110 kg 47 kg 110 kg
Communication RS232, RS485, USB RS232, RS485, USB RS232, RS485, USB RS232, RS485, USB RS232, RS485, USB RS232, RS485, USB
Calibration External Automatic / External Manual Internal Automatic / External Manual Internal Automatic / External Manual Internal Automatic / External Manual Internal Automatic / External Manual Internal Automatic / External Manual
Interface Dimensions DN KF25 / DN KF16 DN KF25 DN KF25 DN KF25 DN KF25 DN KF25
Display Units Pa·m³/s、mbar·l/s、atm·cc/s、Torr·l/s、ppm Pa·m³/s、mbar·l/s、atm·cc/s、Torr·l/s、ppm Pa·m³/s、mbar·l/s、atm·cc/s、Torr·l/s、ppm Pa·m³/s、mbar·l/s、atm·cc/s、Torr·l/s、ppm Pa·m³/s、mbar·l/s、atm·cc/s、Torr·l/s、ppm Pa·m³/s、mbar·l/s、atm·cc/s、Torr·l/s、ppm
Optional / / / / ○Dry Pump (NHJ600D) ○Large Dry Pump (NHJ800DL, 35m³/h)
Others Modular Design Modular Design Integrated Design Integrated Design Portable design with low pumping speed, suitable for laboratory and similar applications Dry pump, cleanroom use
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