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NHJ400 Helium Mass Spectrometer Leak Detector (New Energy Application)

Split-type, dedicated to the new energy industry

NHJ400 Helium Mass Spectrometer Leak Detector — dedicated to the new energy industry with a split-type configuration.

NHJ400 Helium Mass Spectrometer Leak Detector (New Energy Application)

Split-type, dedicated to the new energy industry

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Product Overview
NHJ400 Series

Helium Mass Spectrometer Leak Detector (New Energy Application) Dry Pump

The NHJ400 series features a split-type design with a separate mass spectrometer chamber and backing pump, making it a fully automatic mobile helium mass spectrometer leak detector. With its simple structure and superior performance, it is suitable for a wide range of industries. The unique gas circuit design and core self-developed mass spectrometer chamber ensure stable signals and strong resistance to magnetic interference.

Mechanical and electrical isolation, dual-iridium filament ion source offering oxidation resistance and long service life. 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 triggers an automatic alarm when the preset pressure is not reached. A handheld remote control unit (up to 150 m) with WiFi connectivity supports APP remote control. Auto-zero and automatic range switching enable real-time data updates and direct Excel report generation.

The software is customizable and features a rotatable color touchscreen.

NHJ400系列 分体式全自动移动式氦质谱检漏仪
Performance Features

Nine core performance features — split-type model dedicated to new energy applications

Split-type layout with oil pump, classic model featuring fully automatic mobile operation. Simple and reliable structure, suitable for various leak detection applications in the new energy industry.

Split-Type Design
Dedicated to new energy applications
Classic Oil Pump Model
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

Dedicated to new energy applications with a split-type configuration.

The NHJ400 series is a fully automatic mobile helium mass spectrometer leak detector, suitable for various leak detection applications in the new energy industry, featuring a split-type configuration and a classic oil pump solution. The unit is easy to move, with a simple and stable structure, delivering high-performance leak detection capability and adaptable to demanding conditions across a wide range of industrial sites.

Technical Specifications
Parameters of NHJ400 Helium Mass Spectrometer Leak Detector (New Energy‑Specific)
Technical Specifications Description / Model
Minimum Detectable Leak Rate 3×10⁻¹³ Pa·m³/s Mechanical Pump Oil‑sealed rotary vane pump
Vacuum Leak Rate Display Range (1×10⁻² ~ 1×10⁻¹³) Pa·m³/s Turbomolecular Pump Genuine Imported
Minimum Detectable Leak Rate 5×10⁻⁹ Pa·m³/s Solenoid Valve Custom-designed for imported leak detectors
Sniffer Leak Rate Display Range (1×10⁻²~1×10⁻⁹) Pa·m³/s (zero) 7-inch Color Touchscreen
Detectable Gases ⁴He,³He,H₂ cart
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 AC220V±10%, 50Hz External Leak Standard
Language Chinese/English Built-in Leak Standard
Dimensions (650*390*970) mm Data Save
Weight 100 kg Input/Output Interfaces RS232、RS485、USB
External Control I/O and Analog Output Interface
Display Units Pa·m³/s、mbar·l/s、atm·cc/s、Torr·l/s、ppm
Operating Environment Temperature: (5–40)°C Humidity:≤80% RH
● Standard    ○ Optional

 

Multi-Product Comparison Specifications
Parameters NHJ400 NHJ400M NHJ480 NHJ60O(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
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
Minimum Detectable Leak Rate / 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)
Helium Pumping Speed 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
Startup Time ≤90 s ≤100 s ≤90 s ≤90 s ≤90 s
Response Time ≤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
Valve Block / Yes Yes Yes Yes
Display Screen / Split-Type Integrated Integrated Integrated
Backing Pump Dry Pump Without Backing 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 100-120V、60Hz
200-240V、50Hz
DC24V、350W 100-120V、60Hz
200-240V、50Hz
100-120V、60Hz
200-240V、50Hz
100-120V、60Hz
200-240V、50Hz
Operating Environment Temperature:10-40℃
Humidity:≤80% RH
Temperature:5-40℃
Humidity:≤80% RH
Temperature:5-40℃
Humidity:≤80% RH
Temperature:5-40℃
Humidity:≤80% RH
Temperature:5-40℃
Humidity:≤80% RH
Language Chinese / English Chinese / English Chinese / English Chinese / English Chinese / English
Dimensions 650*390*970 mm 420*275*359 mm 620*370*1027 mm 620*370*480 mm 620*370*1027 mm
Weight 100 kg 26 kg 110 kg 47 kg 110 kg
Communication / / / / /
Calibration / / / / /
Interface Dimensions / / / / /
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
Optional / / / ○Dry Pump (NHJ600D) ○Large Dry Pump (NHJ800DL,35m³/h)
Other / Modular Design Integrated Design Portable design with low pumping speed, suitable for laboratory and similar applications Modular Design
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