NV9 差圧式気体用流量計
Contents
1. This product is a fowmeter which uses the proportional relationship Hagen Poiseuille s law between the pressure drop generated by the viscosity resistance of the gas and the gas flow Since square root extraction is not used display of linear value versuS differential pressure IS possible A straight section is unnecessary because a laminated fow element is used Install orifice plates in the piping and measure the differential pressure generated before and after according to the magnitude of the flow rate and find the flow rate by square root extraction sSPECIFICATIONS Flow range Flow rate accuracy Attached table reference 3 F S 1digit at 0 50C 0 1MPa 25A 32A 5 F S 1digit NV912. 180 When the display direction is standard you can change fow direction by changing the orifice 180 1 DIMENSIONS 1 Unt mm NV91 Orifice plates type Horzontal mounting Vercal mounting gt In case of from left to right or right to left of flow direction In case of from bottom to top or top to bottom of flow direction 57 5 57 5 IL 9 Indication spot of bore diameter amp flow direction lolelolelalwle wlwlwlmlmwlmlm 25A Note The drawing is for 25A Note S is the width across flats of hexagon for 10A to 32A that of octagon selon RN NV9L_ 2 DIMENSIONS 2 A NV93 orice plates type Horizontal mounting Vertical mounting In case of from
3. No freezing or condensation permitted with fuid and ambient temperature 10 60 35 85 RH io eoec ss lt 8s RH Storage temperature and humidity No freezing or condensation permitted cabe 2m SR30 Lengih2m with connectors Type SR30 tom Hirose Electic Co Ltd Powersppyp 24V DC 10 PP 10 24V DC 10 rpple voage pp 10 rless cumentconsmpton 100mA 100 mA crless exelude output signa pipay 5 LED 8mm 7 LED 5 digit LED leter height 8 mm red 7 segmentLED Display cyce 200ms 200ms pspsyrnge 19999 99999 ieee lt 9999 Iinegal vaue dspey ange 0 999 999 999 9 o g9999999 9digt 1 OUT 1 6 SET 1 Out display 1 Unit display 6 SET dspey1 Fowrate count cycle 50ms sms a 0 200Pa 500Pa 1kPa 2kPa 5kPa 0 200Pa 500Pa 1kPa 2kPa Bk
4. lt becomes characteristics of linear because Square root operation isn t needed Sraight tube length is Unnecessary NAGANO KEIKI NV9 _ FEATURES OF SENSOR SS II 2 NF The mounted silicon capacitance sensor consists of a micro diaphragm and electrodes formed by micro machining The diaphragm is protected from excessive pressure by means of upper and lower glass plates realizing a highly reliable structure even with micro DreSSUre The semiconductor evaporated type SS sensor which has a record of achievements in VariOuS Industrial fields has an integrated COnstruction achieved by welding together the DreSSure Sensing Dart and the fitting part and features excellent durability and stability Upper glass plate Electrodes Silicon diaphrag
5. N2 NL min g min Flow unit 25C Standard 25 others Fluid temperature Please specify fuid temperature Reouired Please specify the desired documents separately For nitrogen Nil Required Please specify the desired documents separately Nil Required 1 1 Please specify the desired documents separately Submission drawings instruction manual test report 1 pc 1 copy inspection traceability certificate 9 Flow test Setting items Documents When ordering please specify flow range X Specify X if there is no specification item
6. Photo relays 1 point red OUT operation monitor Output capacity 30V DC 100mA max 30V DC 100mA max Standard volumetric fow rate mass fow rate differential pressure Comparator output Output type gauge DreSSure basic pressure Or temperature display selectable Response 70ms max Standard volumetric fow rate mass flow rate 70ms max 30ms max Differential pressure gauge DreSSure 30ms max 120ms max Basic pressure temperature 120ms max Hysteresis Variable Dead band Window Variable Delsy 0 20 ON OFF 0 to 20 s for both ON and OFF Output type Volumetric flow rate or mass flow rate selectable Integral pulse i output Frequency 2Hz max 2Hz max ON oN width 200 300ms 200 300ms Response 70ms max Standard volumetric flow rate mass flow rate 70ms max Alarm output 30ms max Differential pressure gauge DreSSure
7. NV9 1 FLOW RANGE 1 NV91 In selecting the fow range of this product the bore diameter of Diping and the working pressure of medium need to be clarified for pressure compensation Select referring to the following table This table shows the maximum standard volumetric flow rate in the Air flow rate accuracy compensation range when the medium is air EE 128 178 216 249 277 303 327 ee 09 si eee EO oss ziosslireslrezlessliens se 953 ge MO ge ees we ssi lo or 175 msz se oor losses eee es gumliee leelies le ee loslaalga D mm D Pipe inner diameter mm o Fluid temperature at 25C 2 How to select a range Example When bore diameter is 25A basic pressure is 0 3 MPa and flow 25A 0 3MPa 15Nm3 h range is 15Nm3 h Selecting 25A for bore diame
8. When ordering please specify flow range X Specify X if there is no specification item NV9 _ No Model name OD SD OQ WW Differential Pressure Flowmeter For Gas sgeone spec kaeow sss om From left to right Mounting direction Connection 3 1 Analog output 3 contact output 1 1NL min 5NL min Output type CA Flow range OMPa Atmospheric pressure 0 6MPa 0 1MPa 0 7MPa Basic pressure 0 2MPa 0 4MPa Standard 0 8MPa 0 9MPa 1 0MPa Differential pressure range 3 0 F S 1digit standard 0 100 F S In case of 0 to 100 of range 1 0 F S 1digit 25C High precision When designated pressure is 25C 0 100 F S In case of 0 to 100 of range Air Accuracy Fluid
9. 93 Orifce plates type NV94 Laminar fow element type 0 1 2 5 10NL min 0 1 2 5 10 NL min 3 F S 1digit 1 F S 1digit 25C 3 F S 1digit at 0 50C 0 1MPa 3 F S 1digit Standard Flange type of 25A and 32A 5 F S 1digit 1 F S 1digit High precison When designated pressure is 25C 10 100 F S 0 100 Range of guaranteed flow rate accuracy 10A 3 8B 50A 2B Pipe bore diameter 25A 1B 100A 4B 10A 3 8B 50A 2B Standard Screw type 25A 1B 100A 4B Standard Flange type Rc1 4 Connection SCreW Connection Flange connection JIS G 3452 1MPga Applicable pipe Carbon steel pipe for plumbing JIS G 3452 with 1MPa specification 10D 4D D Redquired straight tube length 90 Upstream 10D or more Downstream 4D or more Upstream condition 90 elbow D Pipe bore diameter Unnecessariness Mounting posture Mounted into display readout direction vertical and h
10. 30ms max 120ms max Basic pressure temperature 120ms max Frequency 10 150Hz 0 7mm 60Hz 10 150Hz multi amplitude 0 7mm 60Hz or less Resistance to NPG Acceleration 50m sz 60Hz 50m s2 60Hz or more xyZ 2 5 x y Zz 2 5 hours for each Vibrating direction 100m Ss2 100m s2 Resistance to shock Impact acceleration xyZ 3 x y Zz 3 times into forward and backward directions for each Impact direction Insulation resistance 50V DC 100MO 50V DC 100MO or over Witnstand voltage 350V DC 1 350V DC 1min Circuit protection Reversely connected power supply EMC EMC Directive 89 336 EEC Applicable Directive 89 336 EEC MR EN61326 1997 A1 1998 A2 2001 A3 2003 Applicable Standards EN61326 1997 A1 1998 A2 2001 A3 2003 casing protection struture IP63 IP63 Indoor use NV9L_ FLOW RATE DETECTOR Differential Pressure Sensor Differential Pressure Sensor Orifice plates Laminar flow element
11. setting available Standard volumetric flow rate mass flow rate differential pressure Analog output Output type gauge Dressure basic pressure or temperature display selectable Current output 4 20mA DC 4000 max 4 20mA DC Load resistance 4000 max a Output point 3 3 points Standard Standard volumetric fow rate gauge pressure temDperature Output accuracy 0 5 F S at 23C 2C 0 5 F S at 23 2 C Toward the indication 0 05 F S 0 05 F S Zero Span Temperature characteristics Response 70ms max Standard volumetric fow rate mass flow rate 70ms max 30ms max Differential pressure gauge DreSSure 30ms max 120ms max Basic pressure temperature 120ms max Resolution 0 04 F S 0 04 F S Contacts Comparator output integral pulse output and alarm output selectable Number of contacts 1 OUT
12. CatNo E01 14 D NV91 Orifice plates type KNV94 Laminar flow element type FLOW RATE SENSING METHOD 3 NV9 Model NV9 _ Differential Pressure Type Flowmeter For Gas 4 This product is a differential pressure flowmeter for gas equipped with temperature and a preSSure compensation function It use Orifice or laminar flow element to detect flow rate It was equipped with four sensors a differential pressure sensor a pressure sensor a temperature sensor an atmospheric pressure sensor and was unif
13. Mounting direction 20A Screw type only 65A Flange type only A 80A Flange type only Bore diameter 10A Screw type only 25A 32A 40A 100A Flange type only 3 1 Analog output 3 contact output 1 Output type Standard Select according to the flow range selection table Others Flow range Atmospheric pressure 0 6MPa 0 1MPa 0 7MPa Basic pressure 0 2MPa 0 8MPa 0 3MPa 0 9MPa 0 4MPa 1 0MPa 0 5MPa 1 200Pa Range1 200Pa 2 500Pa Range2 500Pa Differential pressure range 3 1kPa Range3 1kPa Select according to the fow range Selection taDle 4 2kPa Range4 2kPa 5 5kPa Range5 5kPa 3 0 F S 1digit 10 100 F S In case of 10 to 100 of range 5 0 F S 1digit 25A 32A Flange
14. Pa ma 1 F S 1digit at 23C 2C 1 FS 1digt st23C 2C 10ms 10ms Differential pressure measurement period NV9L 2 2 COMMON SPECIFICATIONS 2 1 Gauge pressure range 0 1MPa 0 1MPa Gauge pressure accuracy 0 5 F S 1digit at 23 2C 0 5 F S 1digit at 23C 2C 10ms 10ms Gauge DreSSure measurement Deriod Absolute sensor range 15 115kPa abs 15 115kPa abs Absolute sensor accuracy 1 5 F S 1digit at 0 50C 1 5 F S 1digit at 0 50C St 100ms 100ms Absolute sensor measurement period 0 015 1 115MPa abs 0 015 1 115MPa abs Basic pressure display range 1 65 F S 1digit at 0 50C 1 65 F S 1digit at 0 50C Basic DreSSure diSDIay aCCUraCV Temperature range 0 lt 50C 0 lt 50C Temperature accuracy 1C 1digit at 0 50C 1 C 1digit at 0 50 100ms 100ms Temperature measurement Deriod setting function 0 50C Temperature compensation setting function 0 lt 50C arbitary
15. Q NL min Flow rate value of operating fuid Argon 3 3 CO2 kg m3 normal Density of operating fuid lkg m3 normal ea RL 1 9768 N20 Nitrogen 6 1 988 MI NV9 Eb IN e Comnection terminal distibution for in or output Terminal number Cable color 24V DC Power supply 24V DC 3 OUT Black Electric contact output OUT 3 LR Zs A eres SR30 3 5 SR 30 type Hirose Electric Co Ltd 6 Analog 4 NM 3 Receliver 3 4 5 6 Analog output is standard output of standard volumetric flow rate gauge pressure Or temperature PIE UNINUGW Mt orifce plates type ony Fow direction Horizontal mounting Vertical mounting A EE O cur aAnokaki co Lm nve O our NAGANOKEKICO LTD LNve Or HH JH GT CD
16. ied to a compact With these sensors temperature and pressure compensation of gas are enabled In addition It possess various indication and output functions FEATURES 3 0 50C Temperature and pressure compensating function included Standard volumetric flow rate and mass flow rate calculation function included Flow rate differential DresSure pressure and temperature output available Three kinds of optional analog output can be chosen Standard temperature temperature conversion can be set up in the optional Value of 0 to 50 C Detects fow rate using the differential pressure sensor and performs temperature and pressure Compensation using the pressure temperature and atmospheric pressure sensors As a result it is possible to detect standard volumetric fow rate and mass flow rate As an output function It can choose three signals from the fol
17. left to right or right to left of flow direction In case of from bottom to top or top to bottom of flow direction Connection for In or output Indication spot of flow direction Marking spot of bore diameter Equalizing valve A JIS 10K RF H JIS 10K RF 25A 32A 40A 50A 65A 80A 150 156 163 170 50A Ne The drawing is NO 50A NV94 Laminar flow element type LO oor_ Ra dEIKICO LTD _ Nve 4 6 6 4 6 DIA 6 lead shield cable SET 9 Equalizing valve ro Connection for in Or Output 37 5 2xRc17 4 No Model name OD SD GQ WW Differential Pressure Flowmeter For Gas Model number Screw Connection Selective SDeC Additional spec ption Model Flange connection Vertical mounting Horizontal mounting From bottom to top From left to right SS qdINE i ie Tou daar
18. lowing output signal voluntarily Normal volume flow quantity Mass flow quantity Difference pressure Gauge pressure Standard pressure Fluid temperature NV91 93 Orifice plates type gg RE Analog output TIT 4 Flow calculation gt Atmospheric sensor a sc 8 ge Contact output Temperature sensor 4AP Differential pressure sensor Orifice plates Dry calibration makes actual flow calibration unnecessary U LT LIL LIL Pressure sensor NV94 Laminar flow element type ER Analog output TT TT 2 a A EN Contact output Flow calculation DF Atmospheric sensor Temperature sensor 4AP 2 Differential pressure Sensor 9 TTILLTITITITTI Pressure sensor Laminar fow element
19. m Sensor chip Lower glass plate Out display Unit display DISPLAY UF Measurement Measurement display 8 Equalizing valve sr In or output connecter Mi CJ MODE Down Up SET ENTER MODE key Down Up key Set display ENTER key 2 1 COMMON SPECIFICATIONS 1 SCS14 SCS14 aluminum die casting fluoro rubber silicone Gas contact parts material Au SUS304 SUS316 ceramics aluminum Au SUS304 SUS316 SUS630 PTFE SUS630 reinforced PTFE glass etc casemaeia PcZABS PeZABS operating maxmum pessre 1MPa wa Alowable maximum pressue 15MPa 7 rsMPa Alowable maximum diferential pressue 500kPa 500kPa 0 50 35 85 RH o s0c ss 85 RH Operating temperature and humidity
20. orizontal piping possible Horizontal piping from left to right Ne Ar CO2 Nz0 N2 Fluid Dry air N2 Ar CO2 N20 non corrosive gaS Free from water or dust Dry air N2 Free from water or dust NV91 93 MODEL SELECTION OF NV91 93 4 Operating fluid temperature 1 5 Mpa Fluid name Operating fluid pressure Basic pressure RE 8 6 gore diameter of fowmeter De kg m3 6 iameter 0 MM YE mm i i cP Ol of connected phe 0 1atm At 0 1 atm SGP mm 2 NL min Nm3 h Connection standard SGP pipe For other cases determined by Maximum standard volumeitric flow rate discussion based on standard and pipe bore diameter mm 3 NL min Nm3 h 1 7 Woking standard volumetric fow rate Select standard volumetric flow range according to information 1 to 7
21. ter 0 3 MPa for basic 25A 0 3M Pg 2 pressure and Range 2 for range instruct the corresponding value of flow range NV9 2 FLOW RANGE 2 NV93 a oe 69 907 18 128 182 166 179 191 203 2a 04 ee 0 49 a a oc 73 sss ez oas 926 ous D mm D Pipe inner diameter mm Fluid temperature at 25C 2 C How to select a range Example When bore diameter is 50A basic pressure is 0 3 MPa and flow 50A 0 3MPa 60Nm3 h range is 60Nm3 h Selecting 50A for bore diameter 0 3 MPa for basic 50A 0 3M Pa 2 pressure and Range 2 for range instruct the corresponding value of fow range p Density kg m When operating with gas other than air obtain the fow rate corresponding to water before referencing the following table 293 x QA NL min Flow rate value corresponding to air og Ar 1 7828
22. type 25A 32A Air coz Ns Nso Fluid omes NL min g min 10A 20A Nm3 h kg h 25A 25A or over 2 others 25C Standard 25 others Fluid temperature Please specify fuid temperature Ni Reouired Flow test 100NL min Please specify the desired documents separately 100NL min for nitrogen RHedquired Please specify the desired documents separately a Setting items Required UM CE Please consult about other bore 1 1 Please specify the desired documents separately Submission drawings instruction manual test report 1 pc 1 copy inspection traceability certificate
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