The technological process of adhesives production, used in chipboards and OSB boards, consists of polymerization or condensation of solution of formaldehyde and technical urea. This process is controlled by continuously measurement of pH and temperature in the reactors in the so-called pH circuits. For these purposes, the FermPro process sensor type are used, their internal pressure well isolates the diaphragm from the measured medium and thus the electrode body does not stick. Single-channel transmitter to convert the signal for visualization is used.
The printing machines use 4+4 ports with ethanol based paint solutions. Each channel has to be controlled for viscosity and for some customers, it has to be equipped with pH measurement. Some Print houses use these machines in explosive areas. In such cases, these instruments have to be delivered with ATEX approved sensors and transmitters.