VNT Series Wafer-ConeR Flowmeters 2017 by Tokyo Keiso

More catalogs by Tokyo Keiso | VNT Series Wafer-ConeR Flowmeters 2017 | 6 pages | 2017-03-27

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Page 2 of VNT Series Wafer-ConeR Flowmeters 2017

vnt series integral type wafer-cone® differential pressure flowmeter standard specificaion ● meter size ● connection ● rating ● connection size ● materials ● measuring fluid ● fluid pressure and temperature 25 40 50 65 80 100 mm 1 1-1/2 2 2-1/2 3 4 inch wafer type jis10k 20k ansi class150 300 din pn16 40 gb pn1.6 4.0 same as meter size see dimensions and materials as described later liquids gases saturated steam fluids liquids gases saturated steam pressure 2 mpa or less less than 1 mpa 1.6 mpa or less temperature max.120°c max.120°c max.204.3°c ● ambient temperature ● humidity –20°c to 60°c 35 to 85 rh no condensate no freezing ● protection class ip65 jis c 0920 jetproof type when connecting the compatible cable ● measuring range liquids 0 to 10 m/s gases 0 to 80 m/s saturated steam 0 to 80 m/s where low cut is set as 0 as standard the low cut is set as 7 ● guaranteed accuracy range max rangeability 14:1 depends on differential pressure range ● accuracy of the reading ±1.0 to 1.5 of full scale depends on differential pressure range according to the flow calibration standard by tokyo keiso ● flow direction horizontal left to right right to left vertical bottom to top top to bottom ● power supply 24 v dc ±10 ● wiring connection outlet water-proof cable gland applicable cable outer diameter 9 mm ∅ to 14 mm ∅ ● required straight runs [measuring fluid liquids general both gases and saturated steam with reynolds no 200,000 type of joints 1 piece of 90° bend 2 pieces of 90° bend t joint butterfly valve flow control valve butterfly valve fully open gate valve fully open expander diameter 0.67d expands to 1d length 2.5d reducer diameter 3d reduces to 1d length 3.5d 2 ● indication indication part 6 digits lcd character height 10mm with led backlight instantaneous flow rate indication max 4 digits indication range 0 to 3000 totalizing flow quantity indication max 6 digits indication range 0 to 999999 corresponding by desimal point flashing display up to six times of overflow indication cycle 500 msec filter selectable from 0 2 4 8 16 sec indication change-over selectable from instantaneous flow rate and totalizing flow quantity change-over setting manual or automatic 1 to 10 sec interval ● current output to output instantaneous flow rate output signal 4 to 20ma dc 2 wire system maximum load max 500 Ω output accuracy ±0.5 f.s at 23°c for the indicated value of instantaneous flow response 200ms with filter set as 0 resolution 0.1 full scale ● pulse output to synchronize with totalizing flow quantity output contact signal open collector independent common type maximum load max 30v dc max.20ma dc pulse width 100 msec frequency 2hz or less connection diagram [terminal block upstream side downstream side 0d 0d 0d 0d 0d 0d 3d 3d 3d 0d 0d 0d 1d 1d 1d 1d – receiving instrument 4-20ma p open collector p power supply 24v dc 10 – rated load 30v dc max 20ma max fg [measuring fluid :both gases and saturated steam with reynolds no >200,000 type of joints 1 piece of 90° bend 2 pieces of 90° bend t joint butterfly valve flow control valve butterfly valve fully open gate valve fully open expander diameter 0.67d expands to 1d length 2.5d reducer diameter 3d reduces to 1d length 3.5d [notes · d shows the nominal size of wafer-cone flowmeter · the required straight runs are the distance from the flange faces of wafer-cone flowmeter · add 1d to the above mentioned figures for the service β ratio is 0.65 or more upstream side downstream side 1d 1d 1d 1d 1d 1d tokyo keiso co ltd 10d 5d 5d 1d 3d 1d 2d 2d 1d 1d sizing the differential pressure at the maximum flow is determined by the meter size fluid properties and arbitrary drawing ratio β ratio and the differential pressure range of indicator is determined the sizing can be easily made by the exclusive sizing program of wafer-cone concerning the low pressure loss and high-accuracy specification etc the product specification can be decided according to the application contact tokyo keiso for the details about wafer-cone sizing program further referring to the maximum flow range on the following page it is the typical one which has been calculated considering the rangeability as 14:1 or 10:1 in the guaranteed accuracy range depending on the operating conditions the production can be made even if it is out of the range it is recommended that the sizing program of wafercone will be referred tg-f1024-5e