Oval Smart EX DELTA II Series Instructions Manual
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Oval Smart EX DELTA II Series Instructions Manual

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Vortex Flowmeter
Smart EX DELTAⅡ
Totalizer provided
Every OVAL Smart EX DELTAⅡ is fabricated 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.
Separately-mounted
preamp with totalizer
Less Indicator
Separately-mounted sensor
Ins. No.
（Insertion type, fixed）
（Retractable, hottap type）
D-582-3-E
Hottap type


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  • Page 1 Hottap type Separately-mounted sensor Every OVAL Smart EX DELTAⅡ is fabricated 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...

  • Page 2: Table Of Contents

    D-582-3-E CONTENTS ......................5 1. BEFORE YOU BEGIN . Confirming the Specifications ....................5 .2 Transit Considerations ......................5 .3 Storage Considerations ......................5 ....................5 2. OPERATING CONDITIONS .......................... 3. GENERAL ...............  4. COMPONENT NAMES AND FUNCTIONS .......................
  • Page 3 D-582-3-E ..........................2 8. OPERATION 8. Flushing the Piping Assemble ....................2 8.2 Operation Procedure ......................2 ............2 9. FLOW SENSITIVITY ADJUSTMENT PROCEDURE . Amplifier Gain ........................2 .2 Trigger Level .......................... 2 ......................28 10. PARAMETER SETUP 11. BUILT-IN DISPLAY FUNCTIONS AND OPERATION   (totalizer equipped model) ....................
  • Page 4 D-582-3-E CONVENTIONS Shown in this manual are the signal words NOTE, CAUTION and WARNING, as described in the examples below: Notes are separated from the general text to bring the NOTE: 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.

  • Page 5: Before You Begin

    flowmeter. In order to secure long-term and safe use, OVAL recommends the customer to verify the soundness of the flowmeter through periodic inspection every two years. For the details of inspection, contact our sales agent or person in charge.

  • Page 6: General

    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 (Model EL230) and general-purpose Windows PC.
  • Page 7 D-582-3-E ④ Preamplifier 　 （PA25） ③ Adapeter ② Sensor　 （vortex pickup） Probe ① Meter Body （probe） Flow Direction ⑤ Preamplifier PA25S （Totalizer, Digital Indicator） 8-digit LCD Totalizer Fig. . Component Names, Fixed Type...
  • Page 8 D-582-3-E Handwheel ④ Preamp ③ Adapter Gate Valve Vent Valve Hold-Down Disc Mounting Nozzle Flow Direction ② Sensor　 ① Meter Body （Vortex Pickup） （Probe） Fig. .2 Part Names, Hottap Type...

  • Page 9: Piping Instructions

    Accordingly, proper flow straightening measures must be taken when the application engineer considers installation of a DELTA meter. In applications where OVAL straightening devices (flow straightener, and downstream pipe) are used, a straight pipe section is not required unless otherwise specified.

  • Page 10: Pipes To Be Used

    D-582-3-E 5.2 Pipes to be Used Pipes having the inside diameter specified at the time you placed an order for this meter should be used for upstream and downstream pipes. Otherwise, consult the factory for compatibility. 5.3 Location of Pressure Gauge and Thermometer Taps Taps for the pressure gauge and/or thermometer, D= Nominal dia.

  • Page 11: Prevention Of Excessive Flowrate

    D-582-3-E 5.6 Prevention of Excessive Flowrate To ensure long meter life, transient flowrates 「Ａ」 should be held below . times the meter's Meter Valve maximum rating. Shown below are typical examples in steam measurement where Flow excessive flow is often encountered: Direction Examples where meter's maximum rating is Gauge...

  • Page 12: Installation

    D-582-3-E 6. INSTALLATION 6.1 Installation Locations Select a location with ambient temperatures -0 to +80℃ (or -0 to +0℃ for meters configured to explosionproof rating). Installation in such locations as described below should be avoided: ① Hardly accessible for maintenance and servicing ②...

  • Page 13: Installation Procedure, Fixed Type

    D-582-3-E 6.3 Installation Procedure, Fixed Type Install the meter body in the following manner: The piping may run either horizontal or vertical. Install the meter in a position illustrated in the sketches below. 6.3.1 Typical Orientation 〈Horizontal Line〉 〈Vertical Line〉 Preamp Preamp Fitting Screw...

  • Page 14: Installation Pro, Hottap Type

    D-582-3-E 6.4 Installation, Hottap Type 6.4.1 Part Names Handwheel （Probe goes up or down as you turn it in or out.） Match Mark B （Indicates the probe is at the fully raised position.） Stud Drive Match Mark A （Indicates the probe is at the fully Unit inserted position.）...

  • Page 15: Installation Procedure

    D-582-3-E 6.4.2 Installation Procedure (See assembly drawing in Fig. .5 on page 3 and Fig. . on page 3.) By turning in or out the handwheel, the probe of this flowmeter goes down or up and, without the need of interrupting the line, it can be drawn out.

  • Page 16: Preamplifier Orientation

    D-582-3-E Removal Procedure () Disconnect wiring of the preamplifier. (2) By turning the handwheel, retract the probe. Retract it until the guide arrives at match mark "B" on the stud. (3) Confirming that the probe has been retracted completely, fully shut off the gate valve. () Taking precautions against internal pressure, carefully open the vent valve, allowing the internal pressure to escape.

  • Page 17: Ambient Temperature

    D-582-3-E 6.6 Ambient Temperature Given in Fig. . is the allowable process fluid temperature relative to the ambient temperature. Ensure that the ambient temperature is held Nonexplosionproof within the rating. If there is a possibility that the ambient Explosionproof temperature exceeds the allowable limit, Operating the following measures should be taken into Range...
  • Page 18 D-582-3-E 6.9 Hottap Type Drive Unit Removal The drive unit (retractable assembly including the handwheel and screw axis) can be separated. It is beneficial in applications where line vibration is great, or where a single drive unit is shared by multiple flowmeters.
  • Page 19 D-582-3-E 6.10 How to Change Preamplifier Orientation The preamplifier can be oriented to the desired 0° direction in 0° steps as shown in Fig. .. NOTE: To change the orientation, hex key (JIS B 8), nominal size , is required. The preamplifier can be rotated by loosening its four hex socked head screws, but be sure to disconnect...

  • Page 20: How To Change Preamplifier Orientation

    D-582-3-E 6.11 How to Change Indicator and Totalizer Orientation If the preamplifier is equipped with local display (indicator and totalizer), the display assembly can be rotated to the desired direction in 0° steps through 30° . By changing the angle of display assembly (internal assembly), the indicator or totalizer appears for maximum readability on a vertical run or a horizontal run.

  • Page 21: Separately-Mounted Preamplifier Installation

    D-582-3-E 6.12 Separately-mounted Preamplifier Installation ① The maximum transmission length from the sensor is 200 meters; install the preamplifier within this length. ② The preamplifier requires installation on a horizontal or vertical steel pipe 2 inches in diameter with furnished U-bolt. ③...

  • Page 22: Wiring Connections

    D-582-3-E 7. WIRING CONNECTIONS 7.1 Wiring Specifications Table . Wiring Entry G/2 (PF/2) internal thread Preamplifier to receiving instrument:  kilometer max. Transmission Length Probe to preamplifier: 200 meters max. (separately-mounted model) Probe to preamp: 3-conductor shielded cable .25mm min. (separate mtg. type) Preamplifier to receiving instrument: 2-conductor shielded cable .25mm min.

  • Page 23: Separately-Mounted Preamp To Sensor Terminal Box Wiring Connections

    D-582-3-E 7.4 Separate-mount Preamp to Sensor Terminal Box Wiring Connections Terminal Box to Preamplifier For the open collector pulse output,  also connect a wire to terminal 3.  Receiving Instrument Terminal Box to Sensor Fig. .2 7.5 Terminal Box Cover Removal Terminal Box Cover Lock Fig. .3 Fig. . ⑴ The illustration above shows the terminal box ⑵ Apply the key to the terminal box cover and turn cover to be removed.

  • Page 24: Hookup With Receiving Instruments

    An OVAL receiving instrument can be coupled directly, but instruments in general which are designed to accept a voltage signal input require a load resistor connected in series for voltage conversion. Since the voltage signal level varies with the load resistance value, determine the load resistance value by referring to the receiving instrument specifications and the acceptable load resistance range shown below.

  • Page 25: Diagrams Showing Typical Wiring Connections (Example)

    D-582-3-E 7.7 Wiring Diagrams (examples)   Analog Output 4 to 20mADC Power Load Resistor EL2310   4 to 20mADC Power Load Resistor EL2310     Pulse Output EL4061 4/20mADC current pulse ① ＋24VDC ② EL2310   EL4101 4/20mADC current pulse ② ③ EL2310    ...

  • Page 26: Operation

    D-582-3-E 8. OPERATION 8.1 Flushing the Piping Assembly () On a newly installed piping assembly where scale, sludge and other foreign matter are DELTA Meter expected, follow the instructions given below, Flow using a bypass line (Fig. 8.). Direction (2) If there is no bypass line, install a short pipe section in place of the flowmeter before flushing the piping assembly (Fig.

  • Page 27: Flow Sensitivity Adjustment Procedure

    D-582-3-E 9. FLOW SENSITIVITY ADJUSTMENT PROCEDURE Flow sensitivity is accurately adjusted over the Potentiometer specified flow range before the meter leaves the TLV Potentiometer factory. If no output appears at the minimum flowrate presumably due to your specific operating conditions (disturbance from external interference, for example), readjust the sensitivity (trigger level).

  • Page 28: Parameter Setup

    Since parameters are correctly established before the meter is delivered to the customer, no further configuration is normally required. For procedures to review and set up parameters, see the instruction manual for OVAL Smart Communication Unit EL230. ● Description of Parameters...
  • Page 29 D-582-3-E Parameter Setup Range or Item to be Selected Units of Measure Metered fluids Select one from ・Gas and steam ・Liquid Calculation Select one from・Calculation on actual flow ・Calculation corrected for temperature 　　　　　　　　 and pressure ・Saturated steam calculation 　　　　　 ・Superheated steam calculation Reference temperature ・With "Calculation on actual flow"...

  • Page 30: Built-In Display Functions And Operation (Totalizer Equipped Model)

    D-582-3-E (Totalizer or indicator equipped model) 11. BUILT-IN DISPLAY FUNCTIONS AND OPERATION Description of Display Functions This totalizer can display a total of four different readings: total flow, actual instantaneous flowrate, percent instantaneous flowrate, and 8-division % bar graph. It also shows the following error messages: Full scale is exceeded: ErrorFS Upper-end flowrate is exceeded: ErrorOF NOTE: When both errors above have occurred, message "ErrorOF"...

  • Page 31: Precautions On Pulse Type

    D-582-3-E 12. PRECAUTIONS IN PULSE OUTPUT TYPE () If your model is of pulse output type, the pulse output and total counter remain inoperative for 5 seconds approx. after power on and while communications with Smart Communication Unit continue. For 5 seconds approx. after termination of communications, the pulse output and total counter also remain inoperative.

  • Page 32: Preamplifier Run Check With Simulated Pulse Input

    (Open collector output) Preamplifier Fig. 3. ■ Pulse Generator Illustrated diagrammatically is the test setup if OVAL pulse checker (Model PC220 is available as a pulse generating source). (Also refer to the pulse generator instruction manual.) Pulse Checker Switch Settings ・...

  • Page 33: Full Scale Freq. Calculation

    D-582-3-E 13.2 Full Scale Frequency Calculation The full scale frequency of unfactored pulse equivalent to the full scale flowrate is calculated by the following formula: Full Scale Flowrate (volume unit/hour) Full scale frequency (Hz) = ×　 Meter Factor (volume unit/P)　　　　300 　　　　　　　　　...

  • Page 34: Maintenance

    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.
  • Page 35 D-582-3-E ② Separate fitting boss (0) in the following manner: (a) Remove C-shaped stop ring (20), O-ring retainer (208) and O-ring (20). (b) Taking off four hex socket head setscrews (0B), remove fitting boss (0). ③ Sensor Removal Taking off four hex socket head bolts (08) in this state, the sensor (20) can now be separated. Do not force but pull it carefully until out.

  • Page 36: Preamplifier Inspection

    D-582-3-E 14.3 Preamplifier Inspection Interface Board（integrally mounted type） Amplifier Board 1／2 CM− Isolation Board CM＋ CPU Board Fitting Screws 0 V Amplifier Board TP− Isolation Board CALIBRATION MODE CPU Board PROTECT Fig. .　 Isolation Board 14.3.1 Description of Switches and Potentiometers (1) Amplifier Board Name Test Pins Description During measure- ＋・・・ ＶＴＸ Amplified vortex waveform ment 0.Vp-p approx.
  • Page 37 D-582-3-E (3) Isolation Board (analog output type) Name Test pins Description 20ms T T: 2 to 10ms app. at 0 to FS ＋・・・ ＯＵＴ Test pins for monitoring the pulses before analog conversion －・・・ ＴＰ－ 2.7Vp-p approx. (4) Isolation Board (pulse output type) 200 μ...

  • Page 38: Preamplifier Block Diagram

    D-582-3-E 14.3.3 Preamplifier Block Diagram Terminal Block for External Connections Separately-mounted Preamp Type Fig. .2 Preamplifier Block Diagram...

  • Page 39: Display Installation

    D-582-3-E 14.4 Display Installation (option) An optional 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.

  • Page 40: Exploded View And Parts List, Fixed Type

    D-582-3-E 15. EXPLODED VIEW AND PARTS LIST, FIXED TYPE Flow Direction Fig. 5. Parts list appears on the next page.
  • Page 41 D-582-3-E ● Parts List Sym.No. Part Name Q'ty Remarks Sym.No. Part Name Q'ty Remarks １０１ Probe Body ３００Ａ Preamplifier １ PA25 Shaft Assembly Fitting flange ３００Ｃ Preamplifier w/ Totalizer PA25S １０２ １ １０４ Fitting Boss ３００Ｄ Terminal Box １ Bluff Body Preamplifier Assembly See page 0.

  • Page 42: Assembly Drawing And Parts List, Hottap Type

    D-582-3-E 16. ASSEMBLY DRAWING AND PARTS LIST, HOTTAP TYPE Sec. A-A Preamp Fig. . NOTE: Parts list appears on the next page.
  • Page 43 D-582-3-E ● Parts List 〈Probe Assembly〉 〈Drive Assembly〉 Sym.No. Part Name Q'ty Remarks Sym.No. Part Name Q'ty Remarks １０１ Probe Body １ ４００ Drive Unit  set （0 to 8） Spacer Guide １０６ １ ４０１ １ １０７ Hex Bolt １ ４０２...

  • Page 44: General Specifications

    D-582-3-E 17. GENERAL SPECIFICATIONS 17.1 Sensor Specifications Table . ITEM DESCRIPTON Installation Fixed type Hottap type 200，250，300，00，500，00， 00，500，00，800， Pipe Nominal Dia. 800，000，500，2000mm 000，500，2000mm Probe Nom. Bore 50mm Meter Body SUS30 Materials Bluff Body SUS30 Pressure Ratings JIS 0K, ASME 50, JPI 50 Flange Rating 00mm （″...

  • Page 45: Preamplifier Specifications

    Full scale : Same as that of Analog output 2 to 5V DC (See Load Resistance Range curve) Power supply NOTE: If you connect OVAL communication unit EL230, use a power supply below 33V DC. G/2 internal threads Cable entry External cable lead-in method for the flameproof configuration: pressure-tight gasket (furnished with lead-in metal clasp) Converter to receiving instrument : .25mm...

  • Page 46: Nominal Meter Factors

    D-582-3-E 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）...

  • Page 47: Pressure Losses

    D-582-3-E 17.4 Pressure Losses ● Liquid Service C×ρ △P＝ △P＝Pressure loss （kPa） ρ＝Density （ kg/m ） 200300 500 1000 2000 5000 20000 50000 3000 10000 30000 Flowrate  （m /h） ● Gas and Steam Service C×ρ △P＝ △P＝Pressure loss （kPa） ρ＝Density （ kg/m ）...

  • Page 48: Outline Dimensions

    ● Fixed Type Preamplifier：Integrally-mounted type Applicable pipe nominal bore：200 to 300mm (If nominal size of the pipe exceeds 300mm, different dimensions will apply. Built-in Display Please consult OVAL) Ln＝Mounting nozzle length （ std.00mm） ） （ Y ＝Insertion length Standard Pipe nom. bore＜500mm 0.5D approx.
  • Page 49 D-582-3-E ● Hottap Type Applicable pipe nominal bore：00 to 000mm (If nominal size of the pipe exceeds 000mm, All dimensions millmeters different dimensions will apply. Please consult OVAL) Travel Distance：Ls （L ＝L ＋Y＋298） φ355 Handwheel Gate Valve （Nom. Bore100mm） Vent Valve Gate Valve, （Nom.

  • Page 50: Separate-Mount Preamplifier

    D-582-3-E 18.2 Separately-Mounted Preamplifier All dimensions in millimeters NOTE: Figures in brackets （ ） show meter with built-in display. （126） 2″ Pipe To Receiving Instrument Built-in Display To Sensor Approx. Weight （kg） 92.5 Less Display Display Provided Installation on a horizontal pipe is shown here.

  • Page 51: Flameproof Approval : Dimension Of Non-Threaded Joints

    D-582-3-E 19. FLAMEPROOF APPROVAL : DIMENSION OF NON-THREADED JOINTS Dimensions of the "non-threaded joints" concerning the flameproof configuration are show below. CASING FOR INTEGRALLY                         MOUNTED MODEL FLAMEPROOF  JOINT  INFO. MATERIAL：ALUMINUM ALLOY HOLE  ：φ33.5 ＋0.062     0 SHAFT：φ33.5 −0.005 −0.062 MAX.  GAP：W=0.124 WIDTH       ：19 ＋0.6 TERMINAL BLOCK −0.8 SURFACE  ROUGHNESS   MATERIAL ： STAINLESS STEEL          ：BETTER  THAN  6.3a FLAMEPROOF  JOINT  INFO. HOLE  ：φ10 ＋0.10 ＋0.05...

  • Page 52: Product Code Explanation

    D-582-3-E 19. PRODUCT CODE EXPLANATION Table . Product Code Item Description ① ② ③ ④ ⑤ ⑥ ⑦ － ⑧ ⑨ ⑩ ⑪ － ⑫ ⑬ ⑭ ⑮ ⑯ Model EX DELTAⅡ Ｖ Ｘ Ｓ In-line, fixed type Body Style In-line, hottap type Ｈ...

  • Page 53: Notes On Explosion-Proof Type For China (Nepsi)

    D-582-3-E...
  • Page 54 D-582-3-E 2017.02 Revised 2015.08 Revised △ 2013.07 Released All specifications are subject to change without notice for improvement. D-582-3-E (2)

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