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D-582-3-E

14. MAINTENANCE

As long as your DELTA meter is placed in service under proper operating conditions, it will perform

satisfactorily over extended periods of time. But scale, sludge and other foreign matter contained in the

metered ﬂuid could adhere to the inner walls of your meter and degrade meter performance in time. For

this reason, periodic disassembly and inspection is suggested.

14.1 Disassembly and Inspection

◇

Time for disassembly and inspection

◇

() Six months after the ﬁrst time operation.

(2) According to the conditions observed in () above, determine the second time disassembly and

inspection. (Once a year is suggested under normally encountered operating conditions.)

◇

Inspection points

◇

() Probe (probe body and bluff body) for deposits.

(2) Observe the output waveform from the ampliﬁer board in the ampliﬁer and make sure that it conforms

to the waveform shown in the section under the topic "TROUBLESHOOTING" in the preamplifier

instruction manual.

14.2 Disassembly and Inspection

NOTE:

See Section 5, "EXPLODED VIEW AND PARTS LIST, FIXED TYPE" on pages and 2.

(1) Probe Inspection

Taking off hex bolt (0) and three hex socket head setscrews (0A), the probe body (0) can be

separated. Inspect probe body (0) on its inner walls and bluff body (05) for condition and clean.

Foreign matter in the capillary slots (a total of four places) on the sides of bluff body in particular must be

removed thoroughly. Adhere to the following instructions during this procedure:

CAUTION

①

Do not force the bluff body because it contains sensor (201) installed and accessible

through capillary slots.

②

Sharp edges of the bluff body play an important role for maintaining meter accuracy.

Exercise care not to damage them.
Following inspection, install in place. Align the locating pin on the probe body (101) with
the mating pin slot in bluff body (105) at this time.

(2) Sensor Removal

If it is desired to remove the sensor for sensor replacement or other reason, proceed as follows:

①

Firstly separate the preampliﬁer in the following manner:

(a) Remove power.

(b) Remove cover (30) on the terminal box. (

→

see page 23).

NOTE: With explosionproof spec., separate lcok (30) before removing the cover.

(

→

see page 23).

→

see page ).

(d) Separate shield strip (30). (

→

see page ).

(e) Disconnect sensor leads. (

→

see page ).

(f) Loosen hex socket head setscrews (30) and pull out the preampliﬁer upward.

Содержание Smart EX DELTA II Series

Страница 1: ...abricated and shipped from our factory under stringent quality control In order to maintain its design performance throughout its life this manual offers the operator the necessary installation operation and maintenance information Be well familiar with these instructions before you place the meter in service and keep this manual for ready reference Insertion type fixed Retractable hottap type ...

Страница 2: ...ion Procedure Fixed Type 3 3 Typical Orientation 3 3 2 Installation Procedure 3 Installation Pro Hottap Type Part Names 2 Installation Procedure 5 3 Preamplifier Orientation 5 Lagging Work Ambient Temperature Partially Filled Pipe 8 Working Stage and Hoist hottap type Drive Unit Removal of Hottap Type 8 0 How to Change Preamplifier Orientation How to Change Display View Angle of Totalizer 20 2 Sep...

Страница 3: ...mbly and Inspection 3 2 Disassembly and Inspection Procedure 3 3 Preamplifier Inspection 3 3 Description of Test Pins 3 3 2 Switch and Potentiometer Settings 3 3 3 Preamplifier Block Diagram 38 Display Installation 3 15 EXPLODED VIEW AND PARTS LIST FIXED TYPE 0 16 ASSEMBLY DRAWING AND PARTS LIST HOTTAP TYPE 2 17 GENERAL SPECIFICATIONS Sensor Specifications 2 Preamplifier Specifications 5 3 Nominal...

Страница 4: ... the general text to bring the user s attention to important information CAUTION Caution statements signal the user about hazards or unsafe practices which could result in minor personal injury or product or property damage WARNING Warning statements signal the user about hazards or unsafe practices which could result in severe personal injury or death ...

Страница 5: ...e residue metered material completely from its inner walls before storage Waterproofing the cable entrance should also be taken into consideration CAUTION Unauthorized modification will invalidate the specifications 2 OPERATING CONDITIONS This ﬂowmeter is developed designed and manufactured to be used as a ﬂowmeter for general industrial application Therefore when it is used for the application wh...

Страница 6: ...is installed in the main pipe two types are available fixed and hottap The latter design allows sensor inspection and replacement without interrupting the process ﬂow in the line This meter is full of intelligent features to review set up change compensated calculations ranges parameters with self diagnostics and loop test capabilities through communications with OVAL Smart Communication Unit Mode...

Страница 7: ...D 582 3 E Fig Component Names Fixed Type Preampliﬁer PA25S Totalizer Digital Indicator 8 digit LCD Totalizer Meter Body probe Preampliﬁer PA25 Flow Direction Adapeter Sensor vortex pickup Probe ...

Страница 8: ...D 582 3 E Fig 2 Part Names Hottap Type Meter Body Probe Sensor Vortex Pickup Mounting Nozzle Flow Direction Hold Down Disc Vent Valve Handwheel Adapter Gate Valve Preamp ...

Страница 9: ...eter 5 PIPING INSTRUCTIONS For general consideration see JIS Z 8766 Flowrate Measurement Methods with Vortex Flowmeters 5 1 Standard Piping Conditions It is generally required that the ﬂow pattern of a material moving into an inferential type meter be as uniform as possible for accurate metering Accordingly proper flow straightening measures must be taken when the application engineer considers in...

Страница 10: ...erating sources could adversely affect meter performance Minimize pulsating pressures by referring to the following formula N 2 ρV2 Pa where N Pulsation pressure Pa ρ Density kg m3 V Minimum velocity m s If pulsation pressure is excessive the following measures should be taken into consideration Locate the source of pulsation downstream of the meter or locate it as far from the meter as possible P...

Страница 11: ...er s maximum rating Such phenomenon is often experienced at system startup or in batch operation Fig 5 3 Meter Upstream Valve Downstream Valve Valve in Bypass Line Flow Direction 5 7 Prevention of Slug Flow This meter can measure both gases and liquids but slug ﬂows where gases exist in the process liquid will produce a loss of metering accuracy 5 8 Keep the Pipe Filled with Process Fluid When mak...

Страница 12: ...d Hardly accessible for maintenance and servicing Temperature change and or vibration is excessive Possible immersion in water Corrosive atmosphere Unﬁt for the meter s explosionproof conﬁguration 6 2 Physical Orientation This meter may be installed either on a horizontal or vertical run Avoid however such physical orientation as Inconvenient for inspection and maintenance Rainwater is ready to en...

Страница 13: ...izontal or vertical Install the meter in a position illustrated in the sketches below 6 3 1 Typical Orientation 6 3 2 Installation Procedure Install the meter in the following manner The meter probe body is provided with blind caps Be sure to remove them before you install Determine the location by the flow direction arrow mark and the center mark V groove on the shaft assembly 02 Be sure to insta...

Страница 14: ...sed position Match Mark A Indicates the probe is at the fully inserted position Guide Packing Retainer Gland Packing Screw Axis Gate Valve Retaining Ring Hold Down Disc Prevents noises caused by line oscillation Mounting Nozzle Caution Care should be taken in the physical orientation Probe Flowrate sensing assembly consists of 2 body bluff body and sensor 6 4 Installation Hottap Type 6 4 1 Part Na...

Страница 15: ...n you remove the ﬂowmeter Allow the pressure to escape through the vent valve before attempting to remove the meter Directions of handwheel rotation Clockwise rotation viewed from top Probe descends Counterclockwise rotation viewed from top Probe ascends Installation Instructions Install the hold down disc between the mounting nozzle mounting flange and gate valve Use extra care to install the hol...

Страница 16: ... vent valve allowing the internal pressure to escape 5 Remove the ﬂowmeter from above the gate valve 6 4 3 Preamplifier Orientation As viewed from the direction of flow upstream side the preampliﬁer typically installs inclined to the left The cable entrance points downward In the standard installation the display of a display equipped preamplifier PA25S faces in the direction of outﬂow downstream ...

Страница 17: ...o consideration Avoid exposure to the direct rays of the sun Separate from the piping and equipment of elevated temperatures or provide a heat shield Thermally insulate the preamplifier in a low temperature environment 6 7 Partially Filled Pipe When making measurement of a liquid make sure the piping remains full of ﬂuid and contains no trapped air or gases In applications where the existing pipin...

Страница 18: ...ingle drive unit is shared by multiple ﬂowmeters Installing the shaft ﬁtting bolts Fig A Secure the adaptor A to the cover with shaft ﬁtting bolts and hex nuts A This prevents the shaft from being forced upward under line pressure Separating the shaft from its connection Fig B Taking off two hex nuts turn the handwheel to extract the connecting studs from the adaptor A Removing the drive unit Fig ...

Страница 19: ...ith sensor leads in place may damage the sensor Procedure Refer to Section 5 EXPLODED VIEW AND PARTS LIST FIXED TYPE on pages and 2 Turn off power Remove the terminal box cover Fig 2 NOTE If the preampliﬁer is of explosionproof disengage the latch before removing the cover Separate the shield strip Fig 3 Disconnect sensor leads from the terminal block Loosen a total of four hex socket head screws ...

Страница 20: ...equired to take off the latch and change the orientation WARNING In the explosionproof model remove the latch securing the window cover Fig Remove the window cover Fig Loosen four screws holding the display assembly and remove the display assembly from its connector Fig NOTE Orient the display assembly to the desired angle install it as far into the connector as it will go and secure it with four ...

Страница 21: ...0 meters install the preampliﬁer within this length The preampliﬁer requires installation on a horizontal or vertical steel pipe 2 inches in diameter with furnished U bolt Select an installation location easy for maintenance and in a desirable environment CAUTION Locations that comes under any of the following conditions should be avoided Difficult for inspection and maintenance Temperature change...

Страница 22: ...e of 50 or higher use a cable resistant to the temperature of 0 or higher Wire external cable in a way that it is not put under the shielding plate Wiring Entry G 2 PF 2 internal thread Transmission Length Preamplifier to receiving instrument kilometer max Probe to preamplifier 200 meters max separately mounted model Cables Used Probe to preamp 3 conductor shielded cable 25mm2 min separate mtg typ...

Страница 23: ...shows the terminal box cover to be removed Apply the key to the terminal box cover and turn it as shown until it comes off The terminal block is now accessible 4 5 6 1 2 3 1 2 3 For the open collector pulse output also connect a wire to terminal 3 Terminal Box to Preampliﬁer Terminal Box to Sensor Receiving Instrument GND GND Fig 2 Terminal Box Cover ...

Страница 24: ...ment specifications and the acceptable load resistance range shown below Communications with a PC OVAL Smart Communication Unit EL23 0 requires a 250 to 000Ω Ioad l In case a voltage input is fed to the receiving instrument Flowmeter Preamplifier GND PC PC RL DC Power Source Voltage Signal To Receiving Instrument NOTE See page 22 for terminal identification Personal Computers EL23 0 Smart Communic...

Страница 25: ...mADC current pulse Power Power Load Resistor SIG 4 20mADC current pulse GND GND GND GND GND 1 2 3 1 2 3 1 2 3 4 to 20mADC 4 to 20mADC RL RL A Load Resistor EL4061 EL4101 Receiving Instrument 24VDC SIG 0V 1 2 3 EL2310 PC EL2310 PC EL2310 PC EL2310 PC COM SIG SUP 1 2 3 12 to 45VDC Max 30VDC Max 50mA Fig ...

Страница 26: ...mbly completely Checking the meter for proper installation To ensure safety inspect connecting bolt gaskets etc for tightness and other condition Make sure of the ﬂow direction also Leak check Fill the meter with ﬂuid and check for any leak Upon completion of wiring connections turn on power Verify that the receiving instrument will not register erratic counts with no ﬂow Starting up the measureme...

Страница 27: ...the minimum ﬂowrate Sensitivity Potentiometer Vortex Waveform After Ampliﬁcation Ampliﬁer Board A AMP Ampliﬁer Board A VTX to OV 9 2 Trigger Level Trigger level pulse generation sensitivity determines the peak value of amplified vortex signal above which signal to pulse conversion takes place It follows that trigger level adjustment allows ﬂow sensitivity adjustment With increasing TLV pot positio...

Страница 28: ... units having the same unit as the attribute number in the Totalized ﬂow and factored pulse units setup Measurement units of totalized ﬂow and factored pulse output L m3 kL L normal m3 normal g kg t ton US Select one from the available units having the same unit as the attribute number in the Instantaneous ﬂowrate units setup Temperature units One selected from F or Ｋ Pressure units Select one fro...

Страница 29: ...ﬂow or Calculation corrected for temperature and pressure at Calculation set the density ﬁxed value Deviation factor is set up in practice by setting deviation factor Calculation on actual ﬂow in kg m3 normal Calculation corrected for temperature and pressure in kg m3 normal Zero ﬂowrate Always set to 0 by Instantaneous ﬂowrate units Span ﬂowrate Full scale ﬂowrate Min ﬂowrate 3 Span ﬂowrater Max ...

Страница 30: ...ons is your choice follow the instructions outlined in the Smart Communication Unit EL23 0 instruction manual NOTE Select your option at Preamplifier Information menu at Setup on the PC screen With display select switch Opening up the cover facing the internal assembly of the preampliﬁer press the display select switch SW located on the isolation board The display will then scroll forward each tim...

Страница 31: ... Within 5 seconds after power turn on NOTE The period of 5 seconds immediately after power on is called Communication standby mode The built in indicator if so equipped will display as shown in in the ﬁgure below If communications are started during this time period a switchover to Communication mode takes place permitting you to communicate until power is turned off the next time The built in ind...

Страница 32: ...ard Receiving Instrument Power mA Meter for analog type Pulse Checker PC 2201 13 1 Test Setup Couple the pulse generator open collector output across test pins IN and TP on the isolation board Feeding a full scale frequency pulse train from the pulse generator causes the preampliﬁer to produce a 00 output Pulse Generator Illustrated diagrammatically is the test setup if OVAL pulse checker Model PC...

Страница 33: ...t of the meter material Standard 0 0000 β Expansion coefﬁcient of the meter bluff body material Standard 0 0000 Process temperature Setpoint in the Reference temperature for measurement units in terms of If the ﬂowmeter produces an output representing the normal ﬁxed conversion of gases or the mass ﬁxed conversion of steam perform conversion into a reduced meter factor by multiplying the meter fac...

Страница 34: ...nspection Taking off hex bolt 0 and three hex socket head setscrews 0 A the probe body 0 can be separated Inspect probe body 0 on its inner walls and bluff body 05 for condition and clean Foreign matter in the capillary slots a total of four places on the sides of bluff body in particular must be removed thoroughly Adhere to the following instructions during this procedure CAUTION Do not force the...

Страница 35: ...ce but pull it carefully until out 3 Sensor Installation Reverse the order of steps 2 above observing the following instructions CAUTION When installing the sensor make sure that the O ring 204 is in place If this O ring is distorted or otherwise damaged replace with a new one Align the locating pin of sensor 201 with the pin slot of shaft assembly 102 and bluff body 105 You cannot disassemble sen...

Страница 36: ...ox LO 3800Hz approx Test pins for entering a simulated signal input ＩＮＴＰ Accepts a simulated input equivalent to open collector pulses or voltage pulses PG30 Test pins for monitoring the pulses after isolation ＰＬ２ＴＰ 200μs Waveform after PLS isolation on the ampliﬁer board Ampliﬁer Board Isolation Board Isolation Board Isolation Board CPU Board CPU Board Fitting Screws Interface Board integrally ...

Страница 37: ...uid to be metered and nominal meter dia meter Settings may vary with ﬂowmeter speciﬁcations 2 frequency reduction switch １２ Selects the factor of frequency division or scaling of the ﬂowrate signal being measured completely independent of SEL switch OFF 2 reduction inactive ON 2 reduction active 2 Isolation Board Name Symbol Description Switch for open collector output ＯＣ Turning it ON allows an...

Страница 38: ... Amplifier board Interface board Interface board TLV AMP VTX TRG 4 5 6 4 5 6 1 2 3 TP 0V 4V 1 5V 0V TP 0V 1 5V 4 5V 2 7V SW1 SW2 HIC 0V OUT Mo dem Output sig select Analog factored pulse Unfactored pulse Select Low pulse cutoff Amp response select Divide Com pare Amp Chg Amp Chg Amp Piezo electric sensor Piezo electric sensor Preamp board Separately mounted Preamp Type Terminal Block for External ...

Страница 39: ... built in display local indicator or totalizer may be added Installation is simple by coupling the indicator unit or totalizer unit to the existing internal assembly NOTE When the display is added replace the existing cover over the internal assembly with a screw cover having a glass in the window ...

Страница 40: ...D 582 3 E 40 15 EXPLODED VIEW AND PARTS LIST FIXED TYPE Fig 5 Parts list appears on the next page Flow Direction ...

Страница 41: ...al １０８ Hex Socket Head Bolt M5 30 １０９Ａ Hex Socket Head Screw 3 M 8 ３０２ O Ring B １ JASO 2033 １０９Ｂ Hex Socket Head Screw M 8 ３０３ Preampliﬁer Housing １２０１ Sensor ３０４ Latch ２ Explosionproof ２０４ O Ring ３０５ Hex Socket Head Bolt D ２ M nominal 3 ２０７ O Ring P 0A ２０８ O Ring Retainer ３０６ Spring Washer B ２ Nom Fits M ２０９ C Stop Ring for Shaft Nom dia 0 ３０７ Shield Strip １２１１ Retaining Ring ３０８ Pan Head Screw...

Страница 42: ...D 582 3 E 42 16 ASSEMBLY DRAWING AND PARTS LIST HOTTAP TYPE Fig NOTE Parts list appears on the next page Preamp Sec A A ...

Страница 43: ... ４１４ Hex Bolt ３ M 35 ２０９ C Stop Ring for Shaft １４１５ Hex Nut ６ M ２１２ Rubber Bushing １４１６ Washer ４ M NOTE Material of O ring 20 varies with the chemical properties of the process ﬂuid ４１７ Hex Socket Head Bolt ２ M8 25 ４１８ Protection Cap ４ Control Assembly Sym No Part Name Q ty Remarks ３０２ Shaft １３０５ Retaining Ring １３０７ Hold down Disc １３０８ Short Pipe １３０９ Cover １３１０ Gasket Retainer １３１１ Adapto...

Страница 44: ...300 Fluid Velocities Air atm pressure 2 to 50m s Water 0 to m s Standard Insersion Depth Pipe nominal bore D 500mm 0 5D approx Pipe nominal bore D 500mm 0 2D approx where D pipe nominal bore mm Accuracy Better than 2 of full scale Acceptable Fluid Liquid water hot water chemical liquids Gas gases in general compressed air etc Steam saturated steam superheated steam Operating temperature range vari...

Страница 45: ... Resistance Range curve NOTE If you connect OVAL communication unit EL23 0 use a power supply below 33V DC Cable entry G 2 internal threads External cable lead in method for the flameproof configuration pressure tight gasket furnished with lead in metal clasp Cable Converter to receiving instrument 25mm2 Min 2 conductor shield cable Sensor to converter 25mm2 Min 3 conductor shield cable applicable...

Страница 46: ...D 582 3 E 46 17 3 Nominal Meter Factors Table 3 Pipe Nominal Bore mm inches Nominal Meter Factor L P 200 8 2 2 250 0 3 8 300 2 5 5 00 0 500 20 8 00 2 2 800 30 2 000 0 500 0 3 2000 80 30 ...

Страница 47: ...ate m3 h Pressure Loss Coeﬀ of Liquids C 300 100 50 10 5 1 0 5 0 1 100 200300 500 1000 2000 3000 10000 30000 5000 20000 50000 10 5 Flowrate m3 h 2 0 0 m m 2 5 0 m m 3 0 0 m m 2 0 0 m m 4 0 0 m m 5 0 0 m m 8 0 0 m m 1 0 0 0 m m 1 5 0 0 m m 2 0 0 0 m m Pressure Loss Coeﬀ of Liquids C Liquid Service P C ρ 105 P Pressure loss kPa ρ Density kg m3 Gas and Steam Service P C ρ 100 P Pressure loss kPa ρ De...

Страница 48: ...the pipe exceeds 300mm different dimensions will apply Please consult OVAL Ln Mounting nozzle length std 00mm Y Insertion length Standard Pipe nom bore 500mm 0 5D approx Pipe nom bore 500mm 0 2D approx Where D Pipe nominal bore NOTE See approval drawing for detail dimensions Fixed Type Preampliﬁer Separately mounted type Applicable pipe nominal bore 200 to 300mm If nominal size of the pipe exceeds...

Страница 49: ...ength Y 0 2D approx or 0 5D approx Vent Valve Nom Bore 15mm Hold Down Disc 989 400 60 44 L v L n Y 46 5 φD 16 2110 Probe Pipe I D Flow Direction Hottap Type Applicable pipe nominal bore 00 to 000mm If nominal size of the pipe exceeds 000mm different dimensions will apply Please consult OVAL NOTE See approval drawing for detail dimensions All dimensions millmeters ...

Страница 50: ... Dimension mm Approx Weight kg φｄＬ JIS 0K JIS 20K ASME Class 50 JIS 30K ASME Class 300 FS2 3 20 200 8 2 00 30 0 0 FS2 3 25 250 0 2 8 8 3 000 220 2 0 2 0 FS2 3 30 300 2 2 3 00 3 0 3 0 0 FS2 3 35 350 333 200 0 5 0 5 0 FS2 3 0 00 3 0 800 0 520 FS2 3 50 500 20 8 0 000 8 0 30 FS2 3 0 00 2 58 2 200 5 0 0 NOTE Above 00mm ASME Class 50 only Model Nom Dia mm Inches Dimension mm Approx Weight kg φｄＬ ℓ ℓ2 ...

Страница 51: ...SS STEEL FLAMEPROOF JOINT INFO HOLE φ10 SHAFT φ10 MAX GAP W 0 13 WIDTH L 17 3 1 3 PA25 C05 WIDTH L 24 8 1 3 PA25 C07 SURFACE ROUGHNESS BETTER THAN 6 3a 0 10 0 05 0 0 03 FLAMEPROOF JOINT INFO HOLE φ33 5 SHAFT φ33 5 MAX GAP W 0 124 WIDTH 19 SURFACE ROUGHNESS BETTER THAN 6 3a 0 062 0 0 005 0 062 0 6 0 8 PROTECTIVE CYLINDER MATERIAL STAINLESS STEEL For mounting of protective cylinder to casing use hex...

Страница 52: ...n 0 None non explosionproof Flameproof conﬁguration TIIS 2 2 Flameproof conﬁguration ATEX A Flameproof conﬁguration GOST Flameproof conﬁguration NEPSI Display 0 None Totalizer digital indicator 3 Output Signal ４ Unfactored pulse Smart ５ Factored pulse Smart ６ Analog Smart D Unfactored pulse open collector pulse E Factored pulse open collector pulse Version Code C ASME rated meters are supplied wit...

Страница 53: ...D 582 3 E 53 ...

Страница 54: ...D 582 3 E All speciﬁcations are subject to change without notice for improvement 2017 02 Revised 2015 08 Revised 2013 07 Released D 582 3 E 2 ...

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