

NHJ-800Dry vacuum pumpMobile helium mass spectrometer leak detector, is an oil-free and pollution-free leak detector
- Product overview
- Characteristics
- Technical Parameter
- Easy operation
compression and no oil mist pollution.
Using helium mass spectrometry and inverse diffusion principle, using 180° inhomogeneous magnetic field and automatic control technology.
With short start-up time, fast operation speed, high sensitivity, reliable performance, no pollutant removal, etc. Characteristics.
Large leakage detection function: can be through the preset pressure, empty time, cannot reach the preset value, leak detector automatic alarm prompt.
A variety of units of measurement selection, real-time update of detection data, direct output to generate Excel tables.
Rotatable,7-inch color touch screen, the operator can adjust the direction according to the comfort, any way.
large leakage protection mode, fully protect the ion source from being oxidized and exposed to the atmosphere when the molecular pump is not impacted.
Technical parameter
Vacuum minimum leak detection rate |
3×10-13Pa·m³/s |
Vacuum leakage rate display range |
1×10-1 ~1×10-13 Pa·m³/s |
Minimum leak detection rate for suction gun |
5×10-9Pa·m³/s |
Range of leakage rate of suction gun |
1×10-1 ~1×10-9 Pa·m³/s (zero) |
Detectable masses |
H2,He3,He4 |
Start time |
≤90 S |
Response time |
≤0.5 S |
Leak Pressure |
≤2000 Pa |
Mainframe Power / Voltage |
100-120V、60Hz/200-240V、50Hz |
Work environment |
Temperature: 5-40 ℃ Humidity: ≤ 75% |
Language |
Chinese/English |
Size |
620*370*1027 mm |
Weight |
110 Kg |
Display units |
Pa·m³/s 、mbar·l/s、atm·cc/s、Torr•L/s、ppm |
Large leak detection function: By presetting the pressure, when the preset value is not reached during evacuation, the leak detector will automatically alarm and prompt.
There are multiple units of measurement to choose from. The detection data is updated in real time and can be directly output to generate an Excel spreadsheet.
Multiple large leak protection modes fully protect the ion source from oxidation and the molecular pump from being impacted when exposed to the atmosphere.
The handheld remote control unit can remotely control the detection within a distance of up to 150 meters without obstruction.
One-click start, automatic zero adjustment, and automatic calibration.