


- Product overview
- Characteristics
- Technical Parameter
- Easy operation
NHJ400M leak detector is a modular type leak detector, small volume can be flexible with the vacuum system, a variety of air combination, can be applied to a variety of detection requirements.
Compact structural design to facilitate integration into leak detection systems according to customer needs.
Mass spectrometry room: 180 degree non-uniform magnetic field U-shaped magnet design, good signal stability, and strong resistance to strong magnetic interference.
Double iridium ion source, strong antioxidant capacity and long service life.
Technical parameter
Vacuum minimum leak detection rate |
3×10-13Pa·m³/s |
Vacuum leakage rate display range |
1×10-2 ~1×10-13 Pa·m³/s |
Minimum leak detection rate for sniffer |
5×10-9 Pa·m³/s |
Range of leakage rate of sniffer |
1×10-2 ~1×10-9 Pa·m³/s(zero) |
Helium Pumping Speed (l/s) |
2.5 L/s |
Detectable masses |
H2,He3,He4 |
Start-up Time |
≤90 S |
Response time |
≤0.5 S |
Communication |
RS232,RS485,USB |
Calibration |
Internal automatic/external manual |
Language |
Chinese/English |
Interface dimensions |
DN KF25/DN KF16 |
Power / Voltage |
DC24V,240W |
Backing Pump |
≥2.5L/S |
Backing Pump Speed (m³/h) |
/ |
Weight |
26 Kg |
Dimensions |
420*275*359 mm |
Work environment |
Temperature: 10-40 ℃ Humidity: ≤ 80% |
Detectable masses |
H2,He3,He4 |