To serve industrial processes with “critical” media, this company has expanded its range of electronic pressure switches with the addition of the PSD-31 with flush diaphragm (photo). This device is particularly suited for applications in abrasive, aggressive, adhesive, crystalline and viscous media. Its flush connection eliminates any clogging of the pressure channel with particles and also prevents possible contamination of the process. — Wika Alexander Wiegang SE & Co. KG, Klingenberg, Germany