描述

NHJ-800 helium mass spectrometer leak detector/Vacuum helium leak detection analyzer/Helium leak detection test machine

NhJ-800 series leak detector is a quiet mobile environmental protection helium mass spectrometry leak detector, air compression discharge, no oil mist pollution. Helium mass spectrometry and reverse diffusion principle are used, 180° non-uniform magnetic field and automatic control technology are adopted. It has the characteristics of short startup time, 运算速度快, 高灵敏度, reliable performance and no oil mist pollutant discharge.

NHJ-800 helium mass spectrometer leak detector/Vacuum helium leak detection analyzer/Helium leak detection test machine

With big leak detection function: through the preset pressure, when evacuated, can not reach the preset value, leak detector automatic alarm prompt.

A variety of measurement unit selection, real-time update of detection data, direct output to generate Excel table.

Rotary, 7 英寸彩色触摸屏, 操作者可根据舒适度调整方向.

大漏电保护模式, 充分保护离子源不被氧化，大气泄漏分子泵免受冲击。NHJ400系列氦氢质谱检漏仪

泄漏检测

负压法

*对被检产品内部的密封室进行抽真空
*在被检产品的外表面施加氦气
*检漏仪检测工件内氦含量的变化
*可实现泄漏的精确定位

正压法

*密封腔内充满一定压力的氦气
*当发生泄漏时,氦气通过泄漏口泄漏到周围大气中
*采用抽吸法检测周围大气中氦气浓度增量，可实现泄漏的精确定位

背压法

将被检产品置于加压氦气室中一定时间
去除表面残留的氦气
将被检产品放入与检漏仪连接的检漏仪中;
取一定时间内的最大泄漏率