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subject to alterations f281 2·11987·8·1 ° Gas Spring accessories f282 subject to alterations 2· 19146·2003 ·1 ° Pressure reservoir for reduced pressure rise 2480.00.70. 2480.00.70. Description: The pressure reservoir and its base plates are manufactured from the same high grade steel als FIBRO gas springs. The advantage of including a pressure reservoir in the system is that in operation the gas pressure rises to a lesser extent. Apart from the purely tecnical pressure factors, a reduced pressure rise is beneficial to the service life of the system. Function: The pressure reservoir has two or four mounting holes with G¼" at both sides, which are designed for connection to the control fitting or gas spring. Note: If a pressure reservoir is to be installed, we recommend the 24º-cone-system, which ensures that the gas flow is not inhibited. Mounting clamps should be ordered separately. At least 2 are required for each pressure reservoir, see p. F 284. Calculating the isothermic increase in pressure* (*by approximation) Pressure increase = V a [l] Volume of pressure reservoir, see Table V g 1) [l] Gas volume of gas springs, appropriate spring types 1) Note: When designing gas volume of spring types, please contact us at FIBRO. Stroke [dm] Travel of gas springs, appropriate spring types A [dm 2 ] For area of piston rods of the gas spring, see Table n Number of gas springs Calculation example: 10 gas springs, type 248.13.05000.050 with a travel of 50 mm (0,5 dm) are connected to a system with an 8 litre pressure reservoir. Pressure increase = = 1,145 V a +(n3V g 1) ) V a +(n3(V g 1) –Stroke3A)) 8 l + (1030,51 l) 8 l + (103(0,51 l – 0,5 dm 3 0,332 dm 2 )) 2480.00.70. 2480.00.70.075.0170 0,25 75 170 2480.00.70.075.0250 0,50 75 250 2480.00.70.075.0410 1,0 75 410 2480.00.70.095.0300 1,0 95 300 2480.00.70.095.0500 2,0 95 500 2480.00.70.095.0700 3,0 95 700 2480.00.70.095.0900 4,0 95 900 2480.00.70.120.0360 2,0 120 360 2480.00.70.120.0615 4,0 120 615 2480.00.70.120.1125 8,0 120 1125 Volumen Order No in l (litres) diameter a b Ordering Code (example): Pressure reservoir = 2480.00.70. [a = 75 mm = 2480.00.70.075. b = 170 mm = 2480.00.70.075.0170 Order No = 2480.00.70.075.0170 Gas spring size/daN Piston rod area/dm 2 .00500 0,031 .00750 0,049 .01500 0,102 .03000 0,196 .05000 0,332 .07500 0,503 .10000 0,709 subject to alterations f283 Pressure reservoir 2480.00.70. for reduced pressure rise 1 2 4 3 4 45 Item Quantity Description Order No 1 2 Connection thread G 1 / 8 2480.00.26.03 2 3 24°-cone-hose 2480.00.25.01. 3 1 Pressure reservoir 2480.00.70. . 4 4 Connection thread G 1 / 4 2480.00.26.04 5 1 Monitoring unit 2480.00.31.01 Installaton example: 24°-cone-system 2· 19087·2003 ·1 ° f284 subject to alterations Order No [a b c d e SW 17 2· 19092·2003·1 ° Mounting clamps for pressure reservoir 2480.00.70. 31 70 ø9 (2x) øa b c d e 2480.00.70. 2480.00.70. 2480.00.70.075 75 80 105 41,5 102 2480.00.70.095 95 100 145 51,5 122 2480.00.70.120 120 100 145 64 147 Mounting clamp for pressure reservoir The mounting clamp is a rubber coated galvanised sheet steel ring and is used for mounting the FIBRO pressure reservoir. Important: At least 2 fixing clamps are required per pressure reservoir. If the pressure tank is to be mounted vertically, it should be seated on a robust base. Installation Example: Ordering Code (example): Mounting clamp (1) for pressure reservoir = 2480.00.70. Øa = 75 mm = 2480.00.70.075 Order No = 2480.00.70.075 horizontal vertical Mounting clamps Mounting clamps Pressure reservoir Pressure reservoir Correct Wrong subject to alterations f285 2480.015 Pressure Plates, shock absorbing Description: Shock Absorbing Pressure Plate is designed to minimise the main problems in the metal forming industry. A specially designed shock absorbing unit is designed to reduce: – extreme MODIS NDVI for tracking Barnacle goose spring migration Satellite data has become a potential tool for ecologists and conservation biologists to investigate vegetation productivity and phenology In this study, satellite-derived green wave index (GWI) which is the normalized MODIS NDVI trajectory is used to study migratory avian herbivores movements A total of 12 female barnacle geese were equipped with 30g solar GPS/ARGOS transmitters, and tracked from their overwintering sites in the Netherlands to their breeding sites at the Arctic coast of Russia from 2008 to 2010 (Figure 1) The MODIS 16-day composite NDVI dataset (MOD13A2) with 1-km spatial resolution (Beck et al., 2008) was used to calculate the GWI in this study: GWIt=(NDVIt-NDVImin)/(NDVmax-NDVImin)*100 (Beck et al., 2008; White et al., 1997) Two approaches were used to test if barnacle geese ‘surf’ along the green wave: visualization and statistical method Figure Spring migration route and the GPS locations of 12 barnacle geese Figure The northward movement of one individual barnacle goose in relation to the “green wave” Figure The GWI summary plots showing plant phenology over three years (2008-2010) The site locations include breeding, overwintering, and stopover sites which have been shown with black, blue, and red dots respectively The northward migration of barnacle geese correlated well with plant phenology (Figure 2) For a one-month period (late-April to late-May), the geese migrated to higher latitudes following a mid-range of GWI values (GWI 40-60%) However, in 2010, the geese tracked the higher range of GWI (60–80%) during their northward migration (Figure 3) Furthermore, A significant relationship was found between the arrival date at stopover sites and the date of 50% GWI, i.e the supposed date of peak nitrogen concentration (Doiron et al., 2013), at that specific stopover (R2=0.73, p