LPH UHP 8 flow switch

LPH UHP 8 flow switch: superior purity for the chip industry

In the world of microchips and semiconductors, any form of contamination is fatal to the process. The LPH UHP 8 flow switch offers an uncompromising solution for monitoring process gases. Thanks to its compact size and design without internal seals (no seals), this monitor minimises the risk of particle shedding and leakage.

Why integrate the LPH UHP 8 series?

The LPH UHP 8 flow switch is the first choice for engineers working with ultra-high-purity gases. The monitor confirms normal flow conditions and immediately detects deviations (high/low flow). Key features are:

• Semiconductor gases: specifically tested and certified for use with high-purity gases.
• Extreme leak tightness: every unit is subjected to an inboard helium leak check of 1 x 10(-9) atm ccHe/sec.
• Snap-action switching: the hermetically sealed reed switch ensures immediate and reliable switching when the switch point is reached.
• Durability: made of 316L stainless steel for maximum corrosion resistance and a long service life.

Operation and process integration

The operation of the LPH UHP 8 flow switch is based on a magnetic piston that responds to pressure differences:

1. Flow detection: as soon as the gas flow increases, the pressure difference overcomes the resistance of the piston.
2. Switching: the magnetic piston activates a reed switch that is safely encapsulated in epoxy, outside the media path.
3. Flow capacity: the unique design allows larger volumes of gas to pass than the actual switch point.

Technical specifications LPH UHP 8

Engineering support

The LPH UHP 8 flow switch requires vertical installation for reliable operation. Thanks to the hermetic separation between the medium and the electrical contacts, this monitor is extremely safe to use with various process gases. Do you need technical support in selecting the right switch point for nitrogen or other specialist gases? We are happy to advise you based on the current flow curves and system pressures. You can also visit the website of our partner ChemTec for more information.