Redundant laminar flow monitoring at a measurement point

SCHMIDT® Duplex Flow Sensor SS 20.415 Twin*: Ideally suited for required double safeguarding of laminar flow monitoring and confined spaces. Two redundant flow signals from a single measurement point – without mutual influence. Available in straight and angled designs (depending on installation requirements).

SCHMIDT® Duplex Flow Sensor SS 20.415 Twin*: Ideally suited for required double safety of laminar flow monitoring and confined spaces. Two redundant flow signals from a single measurement point – without mutual interference. Available in straight and angled designs (depending on installation requirements).

SCHMIDT Technology, flow sensors manufacturer and Black Forest technology workshop, presents the SCHMIDT® Duplex Flow Sensor SS 20.415 Twin*, a highly precise 2-in-1 flow sensor solution for laminar flow monitoring. Redundant monitoring of laminar flow with two independently operating flow sensors at a measurement point, without mutual influence, is thus successfully achieved.

Monitoring of flow in cleanrooms and pure areas

A directional airflow in cleanrooms protects products from contamination, and disturbing particles are safely diverted. For this purpose, a uniform airflow from ceiling to floor is maintained in cleanrooms with high cleanliness classes ("directed, turbulence-free displacement flow"; monitoring range from wN = 0.36 to 0.54 m/s). The measurement is carried out on the cleanroom side after final filters. Since air exchange is throttled during downtime, highly accurate measurement of air velocity from 0.1 m/s is necessary.

Measuring and controlling supply air flow with the SCHMIDT® Duplex Flow Sensor SS 20.415 Twin

Often, two redundantly operating flow sensors like the SS 20.415 LED are installed in an application to independently perform control and monitoring of laminar flow. Due to limited space conditions, there are often limits to the optimal placement of the two sensors. Even if installation can ultimately be realized, the mutual influence of the two sensors remains a significant unknown.

With the SCHMIDT® Duplex Flow Sensor SS 20.415 Twin*, both of these problems can be easily solved. By combining two completely autonomous flow sensors, it has been possible to realize redundant flow measurement at the same measurement point and eliminate mutual influence of the two probes. Both flow signals are provided separately via two analog outputs.

Thanks to the cleanroom-compatible SCHMIDT® quick-mount system, the duplex sensor can be exchanged for an existing sensor without additional effort. The mounting effort is the same, and the space requirement for installation is minimally increased.

Highlights of the SCHMIDT® Duplex Flow Sensor SS 20.415 Twin*:

– Redundant safeguarding of laminar flow applications
– Two fully functional, independently operating flow sensors in one unit
– Easy installation at a measurement point
– No mutual influence of the measurements
– Limited space conditions are a thing of the past
– Plug-and-play and quick assembly
– Precise measurement of small flow velocities [wN]
– Straight and angled design for wall or ceiling mounting

* protected by DE 20 2021 103 497.1