More particularly 117 m � - system area permits even under adverse circumstances accurate laboratory measurements

Examination of technical special papers according to DIN ISO 187Nur two per cent of humidity deviation and constant temperatures: With the special paper manufacturer Neenah Gessner must take place the quality inspections in laboratory areas, which correspond to the DIN ISO 187. So far these product and material test were accomplished from there in two air-conditioned compartments of the internal research and development center at different enterprise locations. In order to be able to make all measurements in the future central, the Nerling system area GmbH conceived a sufficiently large inspection room, which fulfills both the climatic conditions of the DIN standard, and no-draught and diffusion is. However the high number of simultaneous users already represented an endangerment of the prescribed values. � to the examination of our products we use different procedures. Apart from general characteristics such as thickness, smoothness and degree of separation for oil, dust and water among other things material strength becomes and - porosity certainly �, describes Heinz Wagner, Projektleiter with the Neenah Gessner GmbH, which manufactures technical special papers for different applications within the ranges filtration, tape production and abrasive production. In order to obtain when these measurements correct results, the special Pr�fklima of the DIN standard must be kept: � above all the temperature must be constantly with 23 �C, to deviations may maximally a degree amounted to �, so Wagner. In addition a relative dampness is necessary the fluctuation margin permitted by 50 per cent, lies here with two per cent. The strict defaults are necessarily, there the products of Neenah Gessner for very strong and - decrease as a function of the environment climate bend. Only if the standardized Pr�fklima is kept, a world-wide comparability of the measured values is given. New inspection room for four to five persons lay out so far these tests were accomplished in each case a laboratory area at the two Bavarian production locations of the enterprise. In the future the measurements are to be however only made in a larger, central inspection room. The Nerling system area GmbH specialized in clean-room technology was assigned to establish 117 m � a large area in which the adherence to of the necessary humid and temperature conditions is ensured. � when planning and building it was to be considered that the area is used from four to five persons. In addition three PCs should stand there, to those further heat sources would later possibly come �, explain Olaf Nerling, managing director of Nerling system area. This person and equipmentconditioned temperature influence affects also the air humidity, since both sizes are from each other dependent: � for example air is warmed up of 23 �C with 50 per cent of relative dampness to 24 �C, receives one a relative dampness from 46,9 per cent. However by this variation in temperature one would already lie outside of the specification of Neenah Gessner �, describes Nerling. In addition, the given values must remain constant with changes of load in the inspection room. Diffusion density and no-draughtness as further requirements � due to our experiences in the measuring space's building is a Temperaturkonstanz of 0.1 K/h, like with the grade 1 demanded, a challenge, but no unsolvable problem �, so Nerling. A special difficulty the building of the area consisted however of the fact that in the planning phase was not to be foreseen, how the room climate would behave, if the permitted five persons entered the area at the same time. � it had to be determined from there experimentally, in which temporal distance the persons the area to enter and/or �, explain system-spacefarmer-further defaults for the building may leave were a diffusion-close execution of the space elements and a no-draught air bringing in and - circulation. These conditions were fulfilled among other things by the installation of an accessible double cover. By the cramped space conditions between system area and resounding corner the assembly situation was however very difficult: In the highest place there was about 1.5 m up to the roof, to the deepest only about 30 cm. Adherence to difficult specifications by continuous WeiterentwicklungDer new inspection room with Neenah Gessner was built within two weeks. It is 14.25 m long, 8.25 m broad and in two equal large ranges subdivided. Finally installed Nerling in further one and a half weeks the air condition technology. � that we could receive both, area and air conditioning system, from a hand, were also a factor with the decision for Nerling �, so Wagner. In enterprise the laboratory area is for autumn 2011. � so far the demanded temperature and humidity values with existing changes of load optimally kept �, confirms the project manager. Same is valid for the diffusion density and the demanded no-draught air bringing in sound Nerling is based this result on the continuous advancement of successful and promising concepts. In addition the enterprise leads again and again attempts through � both in the own house and locally at the customers. � with Neenah we will try, say a new rule strategy out soon � Nerling. � we would like to know for future projects whether we can guarantee also still sharper conditions. And with Neenah we have the opportunity to try this out under material conditions. � picture: Since autumn 2011 technical special papers are examined with Neenah Gessner in new 117 m � the large air-conditioned compartment of the Nerling system area GmbH. Source: Neenah Gessner GmbH �

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