The QMS 70-120R is a compact and robust sensor using an unique capacitive sensor technique as well as highly sophisticated electronics. The big single sided sensor, i. e. sensing area at the top, enables weight measurement of voluminous and continuous materials. The QMS 70-120R and the referring HST Control and Inspection System replaces the weight control systems based on X-ray measurement technics. The QMS 70-120R needs no expensive maintenance and no precautions X-ray based control systems need.
Thanks to its construction the QMS 70-120R can be used for weight controlling of endless cellulose or textile webs, where the sensor gets traversed over the webs by motor or pneumatically. At each locations the sensor outputs an analog voltage, which is proportional to the mass, weight just measured. The measurement voltages can be directed to inspection and control systems, like HST Ranger and HST Analyser to derive and evaluate important qualitative and quantitative information and data. The qualitative information and data concern production, machine and material etc. Weight, average weight, weight distribution, statistics etc. are classified to the quantitative information and data.
Bringing into operation is very easy. Adjustment is performed, if needed at all, at the first commissioning. Due to the auto-taring function, no re-adjustment is needed normally. Pollution and abrasion have no effect on sensor operation in a very wide extent