Oval EX DELTA II Instructions Manual
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Oval EX DELTA II Instructions Manual

Battery powered vortex flowmeter
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See also: Instruction Manual , Manual
Battery Powered Vortex Flowmeter
EX DELTA
Fixed type
Ⅱ
Every OVAL EX DELTA
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, fixed type)
Ⅱ
(Insertion, hottap type)
Separately mounted preamp
Separately mounted sensor
is fabricated and shipped from our factory under stringent quality control. In order to
D-583-2N-E
Ins. No.
Hottap type


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  • Page 1 Hottap type Separately mounted sensor Ⅱ Every OVAL EX DELTA 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...

  • Page 2: Table Of Contents

    D-583-2N-E CONTENTS 1. BEFORE YOU BEGIN ............................4 1.1 Confirming the Specifications ........................4 .2 Transit Considerations ........................... 4 .3 Storage Considerations ..........................4 2. OPERATING CONDITIONS ..........................4 3. GENERAL ................................. 5 4. COMPONENT NAMES AND FUNCTIONS ...................... 5 4. Component Parts ............................
  • Page 3 D-583-2N-E 8. OPERATION ..............................23 8. Flushing the Piping Assembly ........................23 8.2 Operation Procedure ..........................23 9. FLOW SENSITIVITY AJUSTMENT PROCEDURE ..................24 9.1 Amplifier Gain ............................. 24 9.2 Trigger Level ............................... 25 10. PARAMETER SETUP PROCEDURE ......................26 0. Procedure to modify a parameter ......................

  • Page 4: Before You Begin

    MAX. PRESS carefully before you place the meter in service. ⑥ ⑪ ° C DATE AMB. TEMP. ⑫ TAG. No. ⑬ OVAL Corporation MADE IN JAPAN <Items Stated on the Nameplate> ITEM DESCRIPTION ITEM DESCRIPTION ① ― Model Totalization Unit of ⑧...

  • Page 5: General

    D-583-2N-E 3. GENERAL Ⅱ Battery-powered, the EX DELTA is designed to serve as a designated local monitor at the point of measurement and finds extensive use in a wide range of applications with many benefits inherent in the vortex flowmeter. It requires no external power source. The display shows the total flow and instantaneous flowrate at the touch of an external switch.
  • Page 6 D-583-2N-E ④ Preamplifier ③ Adapter ② Sensor (vortex pickup) Probe Ass’y ① Meter Body (probe) Flow Direction Display Mode Select Switch 8-digit LCD Totalizer Fig.4. Component Names, Fixed Type...
  • Page 7 D-583-2N-E HANDWHEEL ④ PREAMP ③ ADAPTER GATE VALVE VENT VALVE HOLD-DOWN DISC MOUNTING NOZZLE FLOW DIRECTION ② SENSOR ① METER BODY (VORTEX (PROBE) PICKUP) Fig. 4.2 Part Names, Hottap Type...

  • Page 8: Totalizer Display Function And Operation

    D-583-2N-E 4.2 Totalizer Display Function and Operation In normal operation, the display shows four different modes of reading, namely the accumulated total flow, hourly instantaneous flowrate, per-minute instantaneous flowrate, and resettable total flow, plus a low-battery indicator. 4.2.1 Operation with Mode Select Switch External to Preamplifier () Display Menu Selection The display scrolls through available readings each time the mode switch is pressed as shown in Fig.

  • Page 9: About The Displayed Messages During Operation

    D-583-2N-E 4.2.4 About the Displayed Messages during Operation () Ordinary operation (2) Prolonged operation "MODE" switch is turned "ON" Held turned ON without turning "OFF" immediately by removing the fingers. ⇒ 8 bars appear. ⇒ Bars begin to disappear from the leftmost one. Immediately turning "OFF"...

  • Page 10: Piping Instructions

    But if you plan to solve the flow pattern problem with a straight pipe section alone, secure the length of a straight pipe conforming to the ISO standards given in Table 5. below: (1) OVAL flow straightener combined with downstream pipe (25mm and up in nom. dia.) 　...

  • Page 11: Pipes To Be Used

    (3) Space Saving Arrangement If required straight pipe space is not obtainable upstream of the vortex flowmeter due to existing restrictions on installation location, the OVAL Honey Vane S combined with a short pipe may be used to solve the space problem.

  • Page 12: Prevention Of Cavitation (Liquid Service)

    D-583-2N-E 5.5 Prevention of Cavitation (liquid service) To prevent cavitation, line pressure should be maintained above the level calculated by the following formula: P≧2.60ΔP + 1.25 P (MPa [abs]) where ΔP : Pressure loss (MPa) ≒.2ρV ×0 −6 (MPa) : Stream pressure of liquid (MPa ［abs］ ) ρ...

  • Page 13: Installation

    D-583-2N-E 6. INSTALLATION 6.1 Installation Location Select a location with ambient temperatures -20 to +60°C. Installation in such locations as described below should be avoided: () hardly accessible for maintenance and servicing (2) temperature change and/or vibration is excessive (3) possible immersion in water (4) corrosive atmosphere (5) unfit for the meter's explosionproof construction 6.2 Physical Orientation...

  • Page 14: Installation Procedure

    D-583-2N-E 6.3.2 Installation Procedure Install the meter in the following manner: BOLT () The meter probe body is provided with blind V-GROOVE MARK (CENTER MARK) GASKET caps. Be sure to remove them before you install. (2) Determine the location by the flow direction arrow mark and the center mark (V-groove) on PIPE the shaft assembly (02).

  • Page 15: Installation Procedure

    D-583-2N-E 6.4.2 Installation Procedure (See assembly drawing in Fig. 6.5 on page 4.) By turning in or out handwheel, the probe of this flowmeter goes down or up and, without the need of interrupting the line, it can be drawn out. When the meter is placed in service for measurement, the hold-down disc is so positioned as to come in contact with the retaining ring (the guide is at match mark "A"...

  • Page 16: Preamplifier Orientation

    D-583-2N-E 6.4.3 Preamplifier Orientation As viewed from the direction of flow (upstream side), DISPLAY PREAMPLIFIER the preamplifier typically installed inclined to the left. The mode select switch points downward. MODE SELECT TO PROBE SWITCH Fig. 6.7 6.5 Lagging Work If heat insulation is considered for the piping, PREAMPLIFIER simplified lagging (without mortar finish) is suggested FLANGE...

  • Page 17: Hottap Type Drive Unit Removal

    D-583-2N-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. Drive unit removal procedure (1) Installing the shaft fitting bolts [Fig.

  • Page 18: How To Change Preamplifier Orientation

    D-583-2N-E 6.10 How to Change Preamplifier Orientation 90° The preamplifier can be oriented to the desired direction in 90° steps as shown in Fig. 6.. NOTE: To change the orientation, hex key (JIS B 4648), nominal size 4, is required. The preamplifier can be rotated by loosening its four hex socket head screws, but be sure to disconnect sensor leads before...

  • Page 19: How To Change Preamplifier (Totalizer) Display Orientation

    D-583-2N-E 6.11 How to Change Preamplifier (Totalizer) Display Orientation The display (totalizer) can be rotated to any desired direction in 90° steps through 360°. By changing the orientation of display board (internal assembly), you can adjust the totalizer display to appear for maximum readability in a vertical line, too.

  • Page 20: Separate-Mount Preamplifier Installation

    D-583-2N-E 6.12 Separate-Mount Preamplifier Installation (1) The maximum transmission length from the probe 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) Select an installation location easy for maintenance and in a desirable environment.

  • Page 21: Wiring Connections, Separate Type

    D-583-2N-E 7. WIRING CONNECTIONS, Separate Type 7.1 Wiring Specifications Table 7. Item Description Cable Entry G /2 (PF /2) internal threads Transmission Length Probe to preamplifier: 200 meters max. Prove to preamplifier: 3-conductor shielded cable 1.25mm min. Cable Used Finished outside diameter: φ3.5mm max. Terminal Block Cross recess pan head screws, M3.5 7.2 Considerations on Wiring Connections...

  • Page 22: Separately Mounted Preamp-To-Sensor Terminal Box Wiring Diagram

    D-583-2N-E 7.3 Separately mounted Preamp-to-Sensor Terminal Box Wiring Diagram PREAMPLIFIER SIDE TERMINAL BOX TERMINAL BOX TO PREAMPLIFIER TERMINAL BOX TO PROBE PROBE SIDE TERMINAL BOX Fig. 7.4...

  • Page 23: Operation

    D-583-2N-E 8. OPERATION 8.1 Flushing the Piping Assembly () On a newly installed piping assembly where DELTA METER scale, sludge and other foreign matter are expected, follow the instructions given below, FLOW DIRECTION using a bypass line (Fig. 8.). (2) If there is no bypass line, install a short pipe section in place of the flowmeter before flushing the piping assembly (Fig.

  • Page 24: Flow Sensitivity Ajustment Procedure

    D-583-2N-E 9. FLOW SENSITIVITY AJUSTMENT PROCEDURE Flow sensitivity is accurately adjusted over the ＡＭＰ Potentiometer specified flow range before the meter leaves the ＴＬＶ Potentiometer factory. If no output appears at the minimum flowrate p re s u m a b l y d u e t o y o u r s p e c i f i c o p e r a t i n g conditions (disturbance from external interference, for example), readjust the sensitivity (trigger level).

  • Page 25: Trigger Level

    D-583-2N-E 9.2 Trigger Level Trigger level (pulse generation sensitivity) determines TLV Potentiometer the peak value of amplified vortex signal above (AMPLIFIER BOARD A) which signal-to-pulse conversion takes place. It 160mVp-p follows that trigger level adjustment allows flow (FACTORY ADJUSTABLE sensitivity adjustment. With increasing SET) RANGE pot position (clockwise rotation), flow sensitivity...

  • Page 26: Parameter Setup Procedure

    D-583-2N-E 10. PARAMETER SETUP PROCEDURE 10.1 Procedure to modify a parameter Given below are the steps to change current parameters to new ones: (This parameter modification procedure uses MODE and RESET switches in the internal electronics. See Fig. . on page 3.) () In "Measure Mode (normal mode)", hold MODE switch depressed for 5 seconds to go into "Review Mode".
  • Page 27 D-583-2N-E [Kind 2] Unit setup parameter "Un" In the parameter setup mode, the unit to be set up flickers. MODE ..Not used in the setup process. RESET ..With each ON, the screen scrolls through available units. → On locating the desired unit, press MODE for 2 sec. (The new setting is established and the screen returns to the review mode.) Example: Parameter "Un"...

  • Page 28: List Of Parameters That Can Be Reconfigured

    D-583-2N-E 10.3 List of Parameters That Can Be Reconfigured Table 0. Initial Parameter Code Default Setting Description Example of Setup or Remarks Value - Meter factor Ex.: Given meter factor 9.98L/P (Unit: [ £ /Pulse]) to change the indicated flowrate - Setting range: to read in [m →...

  • Page 29: Table 0.2 Menu Trees And Switch Operation

    D-583-2N-E Table 0.2 Menu Trees and Switch Operation None Accumulated total flow Instant. flowrate (hourly) Inst. flowrate (per-min.) NOTE: Goes back to the screen before a switch to the review mode. Resettable total flow NOTE: Retains variables before a switch to Measure mode (normal mode) review mode.

  • Page 30: Maintenance

    D-583-2N-E 11. MAINTENANCE As long as your DELTA Flowmeter 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 31: Preamplifier Inspection

    D-583-2N-E 11.3 Preamplifier Inspection AMP Potentiometer TLV Potentiometer Input Board Interface Board 1/2 Switch Amplifier Board B* MEM Switch FRQ Potentiometer Display Board NF1 Switch TP− Amplifier Board A* MODE Switch Fitting Screw (MODE Select Switch) SEL Switch TP＋ NF2 Switch RESET Switch SW1-1: Write Protect SW SW1-2: Grand Total...

  • Page 32: Switch And Potentiometer Settings

    D-583-2N-E 11.3.2 Switch and Potentiometer Settings (1) Amplifier Board A NAME SYMBOL DESCRIPTION Amplification factor of the amplifier is factory adjusted relative Amplification adjust to the sensor used. Readjustment is basically not required potentiometer except when the sensor is replaced with a new one. (See Sec.

  • Page 33: Configuring The Amplifier Board

    D-583-2N-E (3) Display Board NAME SYMBOL DESCRIPTION Parameters write protected Write protect switch Parameters write enabled In the accumulated total mode, turning "ON"→ "OFF" resets Accumulated total reset the total reading. switch Normally set to "OFF". (No function) Always set to OFF . Turns power (battery) ON.

  • Page 34: Preamplifier Block Diagrams

    D-583-2N-E 11.5 Preamplifier Block Diagrams Gland total reset Write protect Piezoelectric sensor...

  • Page 35: Batttery Replacement

    D-583-2N-E 12. BATTTERY REPLACEMENT When the " " indicator begins to blink in the display, replace the internal battery pack according to the following procedure. Battery Pack ①Connector Windowed Cover (1) Remove the windowed cover of the preamplifier. (4) Unplug the battery pack connector ① "POWER"...

  • Page 36: About Error Messages

    D-583-2N-E 13. ABOUT ERROR MESSAGES Parameters may be changed as you choose in this flow computer, but if inconsistent, conflicting parameters are entered, or when faulty conditions take place, the preamplifier LCD display will tell the operator with error messages as shown in Table 3. below. Table 3. Message Name...

  • Page 37: Exploded View And Parts List, Fixed Type

    D-583-2N-E 14. EXPLODED VIEW AND PARTS LIST, FIXED TYPE 300D 300A 109B 109A FLOW DIRECTION   Fig. 4. NOTE: Parts list appears on the next page.
  • Page 38 D-583-2N-E ò Parts List Sym. No. Part Name Q'ty Remarks Sym. No. Part Name Q'ty Remarks 300 A Preamplifier w/Totalizer  set PA35 Probe Body 300 C Preamp w/separate totalizer  set PA35 Shaft Assembly Fitting flange 300 D Terminal Box  set Fitting Boss Totalizer Assembly...

  • Page 39: Assmbly Drawings And Parts List, Hottap Type

    D-583-2N-E 15. ASSMBLY DRAWINGS AND PARTS LIST, HOTTAP TYPE SEC. A−A PREAMP (SEE SEC. 14.) Ａ Ａ' FLOW Fig. 5. NOTE: Parts list appears on the next page.
  • Page 40 D-583-2N-E ò Parts List <Drive Assembly> <Probe Assembly> Sym. No. Part Name Q'ty Remarks Sym. No. Part Name Q'ty Remarks Drive Unit  set (40 to 48) Probe Body Guide Spacer Stud Hex Bolt Cover B Hex Socket Head M6×8 Screw Rotor Bluff Body...

  • Page 41: General Specifications

    D-583-2N-E 16. GENERAL SPECIFICATIONS 16.1 Sensor Specifications Table 6. ITEM DESCRIPTION Installation Fixed type Hottap type 200, 250, 300, 400, 500, 600, 400, 500, 600, 800, Pipe Nominal Dia. 800, 000, 500, 2000mm 000, 500, 2000mm Probe Nom. Bore 50mm Meter Body SUS304 Materials...

  • Page 42: Preamplifier Specifications

    D-583-2N-E 16.2 Preamplifier Specifications Table 6.2 ITEM DESCRIPTION Model PA35 Construction is either: Mounting Construction Integrally mounted with flowmeter, or separately mounted with flowmeter (installed on a 2" pipe). *1 Waterproof JIS C 0920, weathertight (IEC IP65) Explosionproof Intrinsically safe (Exia II CT4) Ambient Temperature -20 to +60°C (For details, see 6.6 Ambient Temperature"...

  • Page 43: Pressure Losses

    D-583-2N-E 16.4 PRESSURE LOSSES • Liquid Service C×ρ ΔP＝ ΔP=Pressure loss (kPa) ρ=Density (kg/m FLOWRATE (m • Gas and Steam Service C×ρ ΔP＝ ΔP=Pressure loss (kPa) ρ=Density (kg/m FLOWRATE (m...

  • Page 44: Outline Dimensions

    D-583-2N-E 17. OUTLINE DIMENSIONS Ⅱ 17.1 EX DELTA Unit: mm • Fixed Type Preamplifier: Integrally mounted type Applicable pipe nominal bore: 200 to 000mm (In case of nominal size more than 300mm, consult factory.) MODE SELECT SWITCH = Mounting nozzle length (std. 00mm) Y = Insertion length Standard Pipe nom.
  • Page 45 D-583-2N-E • Hotap Type Applicable pipe nominal bore: 400 to 2000mm Unit: mm STROKE: Ls (Ls = Ln + Y + 298) φ355 HANDWHEEL GATE VALVE (NOM. BORE 100mm) VENT VALVE (NOM. BORE 15mm) GATE VALVE FACE TO FACE: Lv (STD.

  • Page 46: Separately Mounted Preamplifier

    D-583-2N-E 17.2 Separately Mounted Preamplifier ALL DIMENSIONS IN MILLIMETERS MODE SELECT SWITCH 2" PIPE TO SENSOR Approx. Weight (kg) 92.5 INSTALLATION ON A HORIZONTAL PIPE IS SHOWN HERE. 17.3 Flow Straightener and Downstream Pipe Flow Straightener Online Dimensions Dimension (mm) Approx.

  • Page 47: Product Code Explanation

    D-583-2N-E 18. PRODUCT CODE EXPLANATION Ex-proof temp. class Regulations Converter Explosion-proof Process connection Converter configuration Major Parts Material Display Temp. category Output Fluid category Communication interface Probe Nominal Size Version code Model Special ① ② ③ ④ ⑤ ⑥ − ⑧...
  • Page 48 D-583-2N-E Regulations Ex-proof temp. class Converter Explosion-proof Process connection Converter configuration Major Parts Material Display Temp. category Output Fluid category Communication interface Probe Nominal Size Version code Model Special ① ② ③ ④ ⑤ ⑥ − ⑧ ⑨ ⑩ ⑪ ⑫...
  • Page 49 D-583-2N-E...
  • Page 50 D-583-2N-E 2018.06 Revised 2017.09 Revised △ 2013.08 Released All specifications are subject to change without notice for improvement. D-583-2N-E(2)

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