Oval EL4501 Instructions Manual

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Page 1

Ins. No.

Multipoint temperature compensated

FLOW COMPUTER

E-888-5-E

MODEL：EL450

This manual has been prepared to provide you with the information pertinent to the Multipoint Temperature Compensated FLOW COMPUTER.

With the proper application of the information and knowledge contained in this manual, you can expect the best possible results over a long service life of this instrument. Keep this manual for ready reference.

It is suggested that the instruction manuals for the companion pulse generator (flowmeter) and receiving instrument be referred to at the same time.

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TABLE OF CONTENTS

1. BEFORE YOU BEGIN ........................................................................................................................... 4

1.1 Confirming the Nameplate .............................................................................................................. 4

1.2 Transportation Precautions ............................................................................................................. 4

1.3 Storage Precautions ........................................................................................................................ 4

2. GENERAL ........................................................................................................................................... 5

2.1 Features ........................................................................................................................................ 5

2.2 Part Names ................................................................................................................................... 5

3. INSTALLATION ................................................................................................................................... 6

3.1 Outline Dimensions ....................................................................................................................... 6

3.2 Installation ..................................................................................................................................... 6

3.2.1 Installation Location ................................................................................................................ 6

3.2.2 Panel ....................................................................................................................................... 6

3.2.3 Installation ............................................................................................................................... 6

4. WIRING ................................................................................................................................................ 7

4.1 Field Wiring Cables ....................................................................................................................... 7

4.2 Wiring Connections ....................................................................................................................... 7

4.3 Description of Terminal Blocks for External Connections .............................................................. 7

5. GENERAL SPECIFICATIONS ............................................................................................................... 9

6. INTERNAL COMPONENTS AND FUNCTIONS .................................................................................. 10

6.1 Front Panel .................................................................................................................................... 10

6.1.1 Display .................................................................................................................................... 10

6.1.2 On-Screen Menu Items ........................................................................................................... 10

6.1.3 Error Messages ...................................................................................................................... 11

6.1.4 Front Panel Keypad .................................................................................................................11

7. CALCULATION FORMULAS ............................................................................................................... 12

7.1 Uncorrected Total Flow .................................................................................................................. 12

7.2 Flow Velocity and Viscosity Related Meter Error Correction Formula (E1) .................................... 12

7.3 Meter Body's Volume Expansion (3α) Related Meter Error Correction Formula (E2) .................. 12

7.4 Correction Factor in Implementation of Temperature Correction on Petroleums .......................... 13

7.5 Flow Calculation Formula .............................................................................................................. 13

8. PREPARATIONAL CHECKS AND OPERATION ................................................................................. 14

8.1 Preparation Before Operation ....................................................................................................... 14

8.2 Preparational Checks .................................................................................................................... 14

8.3 Operation ...................................................................................................................................... 14

9. TROUBLESHOOTING ........................................................................................................................ 15

10. ERROR MESSAGES .......................................................................................................................... 16

11. BEHAVIOR IN ERRATIC CONDITIONS .............................................................................................. 16

12. OVERALL BLOCK DIAGRAM ............................................................................................................. 17

13. PRODUCT CODE EXPLANATION ..................................................................................................... 18

CONVENTIONS

Shown in this manual are the signal words NOTE, CAUTION and WARNING, as described in the examples below:

NOTE: Notes are separated from 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.

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COMPANION VOLUME

KEY OPERATION MANUAL Ins. No. E-880TM-E

CONTENTS

1. KEY ARRANGEMENT ........................................................................................................... 10

2. DISPLAY SCREEN ................................................................................................................ 11

3. INITIAL CHECK ..................................................................................................................... 14

4. MODE SELECTION .............................................................................................................. 18

5. RUN MODE SCREEN ...........................................................................................................23

6. SET MODE ............................................................................................................................ 36

7. SYS MODE .........................................................................................................................142

8. EL4401 ................................................................................................................................ 170

9. EL4501 ................................................................................................................................ 175

10. DIP SWITCH CONFIGURATION ........................................................................................182

(※: Model with communication capabilities)

COMMUNICATION MANUAL (※) Ins. No. E-880CM-E

CONTENTS

1. COMMUNICATION CAPABILITY OVERVIEW ........................................................................ 5

2. NETWORK CONFIGURATION ............................................................................................... 5

3. MODE SELECTION ................................................................................................................ 6

4. LOCAL / REMOTE SELECTION .............................................................................................8

5. SETUP ITEMS FOR COMMUNICATION .............................................................................. 10

6. COMMUNICATION PROCEDURE........................................................................................ 11

7. COMMUNICATION FORMAT ................................................................................................12

8. BCC / SUM CHECK .............................................................................................................. 45

9. CR / LF .................................................................................................................................. 46

10. CODES ASSIGNED TO UNITS ............................................................................................. 48

11. ASCII CODE .......................................................................................................................... 49

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1. BEFORE YOU BEGIN

Every OVAL product is thoroughly tested and inspected before shipment from our factory. When received, its appearance should be inspected for possible damage by rough handling during transit. First of all, thoroughly read the handling precautions described in this section. For topics other than those covered in this section, refer to the respective sections of this manual.

If at any time in the future you seek our assistance, contact the nearest sales office in your area.

1.1 Confirming the Nameplate

The instrument is adjusted to individual specifications before shipment from our factory. Model number appears on the nameplate attached to the top of the housing. Make sure to see that the instrument you received conforms to the General Specifications and the Product Code Explanation.

◆ When you inquire, supply complete informa-

tion as to the product name, model number, product number, ratings, and other pertinent information.

1.2 Transportation Precautions

※

Nameplate (model number)

※ EL4001 is the

generic designation of the EL4001 series computers.

Fig. 1.1 Nameplate Location

(1) In order to safeguard against damage during transit, transport your instrument to the installation

location in the original package used for shipment from the factory if possible.

(2) Use care to avoid impact shocks to the instrument during transit.

1.3 Storage Precautions

If the instrument upon receipt is to be stored for extended periods of time before installation, unexpected problems could arise. If such is the case, the following considerations should be taken:

(1) The instrument can best be stored in the original package used for transit from the factory. (2) The place of storage should meet the following requirements:

☆ Free from rain and water ☆ Free from vibration and impact shocks ☆ With minimal temperature and humidity variation (around 25°C and 65% R.H.)

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MODEL

EL4001

PLS OUT3 TEMP IN TEMP IN FLOW IN

＋−

B bA

＋−

＋−＋− ＋−

＋

−

SIG SUP

SUP

ANA OUTGND POWER

（

−

）

（

＋

）

PRESS INPLS OUT1

PLS OUT2

1/1

OUT

2. GENERAL

Using the most advanced electronic tehcnologies, this digital instrument has been developed specifically to meet the most demanding flow measurement applications in petroleum products receiving facilities where accuracy is the prime requirement. In response to the liquid flowrate and temperature information arriving from the sensing terminal, such as a flowmeter, it totalizes the flow while implementing meter error and temperature corrections. An analog output and instant flowrate (corrected for meter error and temperature) output are additional provisions.

2.1 Features

(1) Incorporated capabilities to calibrate meter error for viscosity and flow velocity (viscosity correction),

to correct by volumetric conversion factor (temperature correction), and to display the total flow readings readily permit the application engineer to build a petroleum products measurement system with this single instrument.

(2) Changing the meter factor, ranges of temperature, or other parameters, of the companion

flowmeter is simple by keystrokes on the front-panel keypad, or by inserting an IC card into the slot.

(3) Built around a microprocessor, the instrument carries out calculations entirely in digital signal

processing circuits to achieve a high degree of accuracy and reliability.

(4) Variables, such as temperature and totals, can be reviewed on command with the front panel

keypad, whether or not calculation is in progress.

(5) Viscosity and density settings are continuously adjustable. Also, by switching the oil kind, the

instrument is compatible with three different kinds of oils. (6) Remote viscosity and density read/write through the communication link is acceptable. (7) A nonvolatile memory (E2PROM) retains all parameters and variables. Variables are resettable

following a power cycle or reset if so configured.

2.2 Part Names and Functions

Function Keys

Shift Keys

Seal Screw

Display

IC Card

Fig. 2.1 Part Names

Terminal Blocks

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912596

20 232.4

144

136

Min.120

Min.220

±0.8

138 0

600

1800

450

2200

Optimum

Range

AcceptableRange

Computer

3. INSTALLATION

3.1 Outline Dimensions

All dimensions in millimeters

Hold-down Fitting

Fig. 3.1 Outline Dimensions

3.2 Installation

3.2.1 Installation Location

Select an installation site where:

(1) Mechanical vibration, shock and corrosive gases are

negligible. (2) Air is dry and temperature at room temperature and

stable.

NOTE: Although the manufacturer guarantees stated

performance at ambient temperatures up to ＋50°C, it is recommended that the instrument be placed in service at room temperature.

(3) Provide a sufficient working space behind the instru-

ment - at least 50 centimeters from the back panel of

the instrument to facilitate wiring and servicing.

3.2.2 Panel

(1) Use a rigid steel sheet with a minimum thickness of

1.6 millimeters. 3.2mm thick is recommended.

(2) If it is required to install instruments alongside each

other, dimensions in Fig. 3.2 are suggested. (3) Recommended mounting height is given in Fig. 3.3.

Fig. 3.2 Panel Cut

3.2.3 Installation

(1) Front mount the instrument through the cutout in the

panel. (2) Fit the furnished enclosure hold-down fittings into the

top and bottom slots in the enclosure and, confirming

that the instrument is positioned horizontal, secure

the instrument to the panel with hold-down fittings

(Fig. 3.1).

Fig. 3.3 Instrument Mounting Height

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TB 1

TB 2

PLS OUT3 TEMP IN TEMP IN FLOW IN

＋−

B bA

＋−

＋− −＋−

＋−＋− ＋−

＋−

SIG SUP

0V SIG SUP

SUP

ANA OUT

GND POWER

（

−

）

（

＋

）

PRESS INPLS OUT1

COMM1

COMM2

TEMP

PLS OUT2

1/1

OUT

DENSITY IN

4. WIRING

(See the "Wiring Guidelines" in the instruction manual of the companion pulse generator.)

4.1 Field Wiring Cables

(1) Use electrostatically shielded, polyethylene insulated, vinyl sheathed control cables (CEVS, 1.25 to 2

mm, 2-conductor or 3-conductor), or equivalent, for input signal cables from the flowmeter.

For output signal cables, use insulated vinyl sheathed cables (CVV, CVS ... JIS C 3401). (2) Ground the end of shield wire to "G" terminal of the instrument. At the sensor end, leave the end of

shield wire unconnected.

4.2 Wiring Connections

(1) Field wiring through a conduit is recommended.

NOTE: In routing field wiring, use a separate conduit for power cable from other signal cables to

eliminate the possibility of stray current pickup.

(2) Separate field wiring from other power lines and power circuits to minimize the possibility of inductive

interference. (3) Using crimp-type lugs for wiring, ensure good electrical connections.

Terminals are found on the back of the instrument (Fig. 4.1).

4.3 Description of Terminal Blocks for External Connections

Terminal blocks for external connections (TB1, TB2, and TB3) are found on the back of the instrument as shown in Fig. 4.1. Terminal identification appears in Table 4.1 while terminal connections appear in Table 4.2.

NOTE: TB1 and TB2 terminal numbers are

indicated on the side of terminal blocks.

CAUTION Make wiring connections upon confirmation of the validity of flowmeter (pulse generator) to receiving instrument combination by their product code number, instrument number, etc.

Fig. 4.1 Terminal Blocks for Ext. Connections

Table 4.1 Terminal Identification and Functions

Terminal Screws

(M3.5)

1 SUP. 2 SIG. 13 2 ＋ 9 － 3 0V 14 3 － 10 4 OUT 1/1 15 4 ＋ 5 b 6 B 17 6 ＋ 7 A 18 ＋ 8 ＋ 19 － TB3

9 － 20 ＋ 10 ＋ 11 － 3 GND

NOTE : ※ In case of selecting“Having communication function”

Flow in

Temp. in

Alarm out

TB1 TB2

12 1 SUP.

8 ＋

Press. in

16 5 － 12

Comm 1

7 －

Analog out

Pulse out 1

※

Comm 2

21 － 2 N（－）

※

1 H（＋）

Pulse out 2

Power

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Table 4.2 Terminal Connections

TB1 TB2

1 2 SIG. 2 3 0V 3 4 OUT 1/1 4 5 6 B 6 7 A 7 8 ＋ 8 9 － 9

Pulse out 3

12 13 14

Label Description

SUP. 1

Flow in

（＋） （−）（＋）

b 5

Temp. in

polarity

Total flow corrected for viscosity and temperature

Static relay

3-wire generator 2-wire generator

Output sync with input signal (O.C.)

Pt100Ω 3-wire

4 to 20mADC/1 to 5VDC

 Screws on the terminal block: M3.5

1 2 3

Label Description

Analog out

Pulse out 1

Pulse out 2

Label Description

Power

Ground

＋－

polarity

TB3

H（＋） N（－）

Temperature 4 to 20mADC/1 to 5VDC

Uncorrected total flow Static relay

Total flow corrected for viscosity Static relay

85 to 264VAC or 20 to 30VDC

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5. GENERAL SPECIFICATIONS

Table 5.1

Item Description

Signal name

8V 2-wire current pulse Contact closure pulse PG20 2-wire, 12VDC 3-wire

Input signals

Output signals

Display type

Menu items

Correction range

Flow input

Temperature input

Pulse output

Analog output Temperature output

Uncorr. total flow (Q) Total flow corr. for dens. (Qμf) Total flow corr. for and temp. (Qμfρ) Temperature To the 2nd decimal place (when ℃ is selected.) Set density (ρ) To the 3rd decimal place (when g/cm3 is selected.) Set viscosity (μ) To the1st decimal place (mPa・s is selected.) Overall meter error To the 4th decimal place

Vol. conversion factor Correction factor E1 Correction factor E2 Frequency Error alarm

Density Crude oil: 0.6105 to 1.0750 Fuel oil: 0.6530 to 1.0750 Lube oil: 0.8000 to 1.1640 Temperature －10 to +118℃ NOTE: Except the range not covered in JIS K 2249-1995. Ref. temperature 15℃

Viscosity

Computing accuracy

IC card

Clock IC battery backup Lithium battery (Battery life: 10 years approx.)

Communication

Transmission cable

Power source 85 to 264VAC, 50/60Hz or 20 to 30VDC Power consumption 20W max. Ambient temperature －10 to ＋50°C Mounting Panel mount Finish Munsell N1.5

Weight 2.5 kilograms, approx.

Total flow corr. for viscosity and temp.

Temperature

Type Key card Capacity SRAM 32K Battery backup Lithium battery (Battery life: 5 years approx.)

Voltage pulse 24VDC 2-wire Current pulse (4/20mA) 12VDC 2-wire Current pulse

Open collector pulse

Resist. thermometer

Analog 4 to 20mADC or 1 to 5VDC Uncorrected total flow

Total flow corr. for dens. Output sync with flow input signal

Display: ST display (128×128 dots), backlighted (※1), (※2) Information displayed: Data, units, error message simultaneously

Same as output pulse unit (l, etc.) Display capacity: 8 digits

dens.

Static relay Capacity: 230VAC/340VDC 0.2A Pulse width: 1ms/50ms

Open collector pulse

4 to 20mADC (Max. load resistance 500Ω) or 1 to 5VDC (Output impedance 250Ω) Conversion accuracy: ±0.1% of F.S.

To the 4th decimal place (Field labeled measurement unit: Oil kind) To the 4th decimal place To the 4th decimal place To the 4th decimal place

Number of occurring error＋error message

0.4 to 199.9cP (mPa・s )

±0.075% or better

Pt 100Ω at 0℃ ±0.3% of span 4 to 20mADC or 1 to 5VDC ±0.1% of span

Interface: RS485 Multipoint (Up to 16 units can be connected.) Dedicated protocol Baud rate: 4800 bps standard 9600 bps max. Use 3-conductor shielded cable to the resistance thermometer bulb. Loop resist. 5Ω max. Example: 300 meters max. with 3-conductor 1.25mm2 cable; 500 meters with 2.0mm2 cable

Pulse generator

OPTO 01, 02

PG30,

NPG60A (F)

PA14, 15, 25,

NPG60A (E)

PG30S

FlowPet-5G, NPG60A (E3)

Pt 100Ω at 0℃, 3-wire Rated system, current 2mA

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Power to generator

8.5VDC 2kHz

13.5VDC

24.0VDC

13.5VDC

Allowable current 40mA app. Shortcircuit protection circuit provided

Speed of response

50Hz

2kHz

NOTES (※1): ST display stands for Super Twisted Nematic display.

(※2): Backlight life (luminance declined to one half its original luminance) : 2500 hours, approx.

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6. INTERNAL COMPONENTS AND FUNCTIONS

6.1 Front Panel

6.1.1 Display

The display is a 128 × 128-dot multiple function display capable of showing the data, units of measure, error messages, and other information at the same time. (The display is backlighted.)

6.1.2 On-Screen Menu Items

The units of measurement vary with configuration. Their selection is made in the SET mode. Available menu items are:

(1) Uncorrected total flow (TOTAL COUNT(Q))

Incoming flow pulses corrected for viscosity are integrated before correction for temperature, and the obtained totalized flow is indicated. Resolution, or the minimum unit of measurement, which varies with customer specifications, is set up with front-panel keys. This unit automatically becomes identical with the output pulse unit. While the total flow is retained irrespective of power cycling, it is resettable to zero following a power cycle if so configured in the SYS mode.

(2) Total flow corrected for viscosity (TOTAL COUNT (Qμf))

The reading corrected for viscosity is integrated and indicated.

(3) Total flow corrected for viscosity and temperature (TOTAL COUNT (Qμfρ))

The reading corrected for viscosity and temperature is integrated and indicated.

(4) Temperature (TEMPERATURE)

The temperature value currently fed to the instrument is indicated to the second decimal place. If a problem arises in the course of temperature conversion, such as out-of-scale, a default fallback value is indicated.

(5) Set density (SET DENSITY(ρ))

Density value set up in the SET mode is indicated.

(6) Set viscosity (SET VISCOSITY(μ))

Viscosity value set up in the SET mode is indicated.

(7) Overall error (OVERALL ERROR)

Correction factor to correct for viscosity and temperature is indicated. [Overall error] = E1×E2 where E1 : Viscosity and flow velocity related meter error correction factor E2 : Flowmeter body's volumetric expansion (3α) related meter error correction factor

(8) Volumetric conversion factor (VCF)

Volumetric conversion factor which is dependent on input temperature and set density is indicated. The oil kind currently selected is indicated in the field labeled measurement unit.

(9) Flow velocity and viscosity related meter error correction factor (E1)

Meter error correction factor which are dependent on flow velocity and viscosity is indicated.

(10) 3α correction factor (E2)

Meter error correction factor which is dependent on flowmeter body's volumetric expansion (3α) is indicated.

(11) Pulse input frequenc (FREQUENCY)

Pulse frequency arriving from the flowmeter is indicated.

NOTE: For more information about setup items and options, see "KEY OPERATION MANUAL".

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MO DEL

EL4001

RUN

6.1.3 Error Messages

When an erratic condition arises, an error message automatically appears on the display. (The information represented by error messages are listed on page 16.) If two or more concurrent errors are involved, individual messages will be scrolled at intervals of approximately 3 seconds. When an error condition disappears, an error message automatically goes out and the normal display is resumed.

NOTE: An error logging function can store a maximum of 20 events each of which consists of year,

month, day, hour and minutes of error occurrence and recovery. (Complete details are covered in the Key Operation Manual.)

6.1.4 Front Panel Keypad

The eight front panel key switches consist of two kinds of keys - functions keys and shift keys.

・Function keys: Four round keys

Ma inly used for function selection, such as activating the input condition s selected and reconfiguration.

・Shift keys: Four triangular keys

Used for moving the cursor, moving between menu items, or changing numerical values.

Shift Keys

Function Keys

Fig. 6.1 Front Panel Keys

Fig. 6.2 Touch Key Operation

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7. CALCULATION FORMULAS

7.1 Uncorrected Total Flow

Q0 = a × I

Q0 ：Uncorrected total ﬂow ［L］ a ：Meter factor［L/P］

Ip ：Namber of input pulses

7.2 Flow Velocity and Viscosity Related Meter Error Correction Formula (E1)

No. μ

Flow velocity (Hz)

1 Q 2 Q

Viscosity

… … … … … …

8 Q 9 Q

If μ1 ≦ Set viscosity μS ≦ μ

E1S = E11 + (E12－E11) +

μ2×(μＳ－μ1)

μS×(μ2－μ1)

Similarly, factors are determined from E2S to E9S. The same applies to determining factors in the case

μ2 ≦μS ≦ μ3.

Next, from QS, Q1 through Q9 are determined; Qn which is nearest to QS, Q determined, and the calculation below is performed.

E1 = 1－

｛

EnS + (E

(n +1)S－EnS

(QS－Qn)

)×　　　　　

n + 1－Qn

)

÷100

｝

E E

n + 1

, EnS, and E

nS + 1

are

E E

7.3

Flowmeter Body's Volumetric Expansion (3α) Related Meter Error Correction Factor (E2)

As factors associated with 3α compensation, the correction type, coefcients α and β, and reference temperature are set here. If term 2α+βis used in the correction formula, select correction type α ≠ β; if 3α is your choice, select α = β. 　　　　　　 E2 = 1 + (2α+β)×(t－t0) where t : Reference temperature [℃ ] 　 t

: Temperature [℃ ]

　α and β: Thermal expansion coefcients

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7.4 Correction Factors in the Implementation of Temperature Correction of Petroleums

Correction factor for implementing calculation of error correction for temperature on petroleum products is given by the formula 　　　　　V.C.F = exp [－αTΔt (1.0 + 0.8αTΔt) αT = K0 / (ρ15)2 + (K1 / ρ15) orαT = A + B / (ρ15)2 where ρt : Density (t℃ ) [kg/m3] ρ15 : Density (15℃ ) [kg/m3] αT : Thermal expansion coefcient at 15℃ [℃－1] Δt : Temperature difference (Δt = t －15) [℃ ] K0, K1, A and B : Constants (Shown in the table below.)

Constants

A B

CRUDE

FUEL

LUBE

Sample kind Density (15℃ ) range

Crude oil, natural gasoline, condensate

Mobilgas

Fuel oil Kerosene,

industrial gasoline, aviation turbine fuel oil

Light oil, heavy oil

Petroleum-derived lubricants

0.6105 to 1.0750 613.9723 0.0 ─ ─

0.6530≦ρ

0.7705≦ρ

0.7880≦ρ

<0.8390

0.8390≦ρ

0.8000 to 1.1640 0.0 0.6278 ─ ─

<0.7705

<0.7880

≦1.0750

346.4228 0.4338 ─ ─ ─ ─ －0.00336312 2680.3206

594.5418 0.0 ─ ─

186.9696 0.4862

7.5 Flow Calculation Formula

(1) Total flow corrected for viscosity

Total flow corrected for viscosity is expressed as Qμf = Q0×E1×E2 where E1 : Meter error correction factor dependent on viscosity and flow velocity E2 : Meter error correction factor dependent on flowmeter body's volumetric expansion (3α) Hence, the correction factor for correcting viscosity errors is "E1・E2" (overall meter error).

(2) Total flow corrected for viscosity and temperature

Total flow corrected for viscosity and temperature is expressed as Qμρ= Q0×E1×E2×V.C.F where E1 : Meter error correction factor dependent on viscosity and flow velocity E2 : Meter error correction factor dependent on flowmeter body's volumetric expansion (3α) V.C.F : Volumetric conversion factor Hence, the corrected factor for viscosity and temperature correction is "E1・E2・V.C.F".

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8. PREPARATIONAL CHECKS AND OPERATION

8.1 Preparation Before Operation

(1) Ensure that the instrument and related equipment are correctly installed and wired with no place left

unfinished.

WARNING: Make sure to see that the power terminals are connected to a power

source of the rated voltage. Applying a power source of incorrect voltage could ruin your instrument.

(2) Supply power to this instrument and make certain to see that the front panel display is illuminated.

The display will remain unilluminated for one second after power on, which however is by no means any indication of fault.

8.2 Preparational Checks

CAUTION: Allow a warmup period for 60 minutes or so after you turn on the power.

Verify that the instrument does not operate with no fluid flow.

How to Check

(1) Couple sources of simulated temperature and pressure signals. (2) Using the shift keys, select menu items and verify the information displayed.

See the KEY OPERATION MANUAL.

(3) Inject a simulated input pulse train or density signal representing the type of the companion pulse

generator.

(4) Select display menu items of the total mass flow and total calorific flow, and make sure that incoming

pulses are being accumulated. Also, verify that pulse output and analog output are properly generated.

(5) Remove the simulated pulse input and compare the obtained readings on the display with

corresponding theoretical values. Remember that this instrument is not equipped with a counter to accumulate incoming pulses. Hence, an external counter is required.

8.3 Operation

CAUTION: Allow a warmup period for 60 minutes or so after you turn on the power.

(1) Select your power reset or non-reset (accumulated total) option.

See the KEY OPERATION MANUAL.

(2) Turn on power. While the initial check screen remains displayed, indicating that the process of

verifying parameters and variables is in progress after you turned on the power, your instrument will not accept any pulse input.

(3) Place your instrument in service operation by allowing the fluid to be metered.

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9. TROUBLESHOOTING

Reminder: If internal trouble is suspected, seek our service at the nearest sales office or

customer service representative in your area.

Table 9.1

Symptom Check Possible Causes

Display is dead. 1. Inspect fuse.

2. Make sure of power source voltage.

Faulty temperature indication. 　Erratic reading Error messages 　　TEMP 1 (PT) OVER or TEMP 1 (PT) UNDER or TEMP 1 (ANA) OVER or TEMP 1 (ANA) UNDER

Faulty indication of meter error correction factor and/or temperature correction factor.

Fails to count pulses;

While fluid is allowed to flow.

Error messages A/D CONVERT ERROR or DENSITY CONVERT ERROR or 4mA SCALER 1 UNDER (Same also with SCALER 2.)

Error message SCALER 1 OVER (Same also with SCALERS 2 and 3.)

Display fails to respond to card insertion (it remains unchanged).

fails to produce a pulse output.

Faulty total counter reading.

1. Input signal line correctly wired?

Input signal specifications matched?

3. System configured correctly?

4. Temperature range set correctly?

1. Viscosity, liquid kind, and density values set with key cards?

2. Temperature reading correct?

1. Input signal line correctly wired?

2. Pulse signal coming in?

3. Pulse generator specifications matched?

1. Temperature reading correct?

2. Meter error and Temperature correction factor indications correct?

1. Parameters reconfigured correctly? 1. A fault in internal assembly.

1. Fuse is blown.

2. Line voltage is improper.

3. A fault in internal assembly.

1. Input wiring is incorrect.

2. Thermometer resistance bulb is open or shorted.

3. Temperature converter is faulty.

4. A fault in internal assembly.

1. Using key cards, set up viscosity, liquid kind, and density values. ※

2. A fault in internal assembly.

1. Incorrect input wiring.

2. Pulse generator itself is faulty.

3. A fault in internal assembly.

1. Pulse generator itself is faulty.

2. A fault in internal assembly.

1. A fault in internal assembly.

1. Data in the card is lost.

2. Battery in the card has run out.

3. Card is defective.

NOTE : ※ Whenever meter error correction settings which are dependent on fluid velocity and

viscosity are modified, do not fail to set up liquid kind, viscosity, and density, using key cards, following the modification.

Unless setting up using key cards is done as described above, your reconfiguration will not

be finalized.

CAUTION: Once any printed circuit board(s) of the internal assembly has been

removed for servicing, do not fail to reestablish all parameters in the SET mode.

Page 16

E-888-5-E

10. ERROR MESSAGES

Table 10.1 List of Error Messages

No. Error Message Description

1 ADJUST DATA ERROR Adjusted allowable range check error

12 A/D CONVERT ERROR A/D converter circuit error

13 DENSITY CONVERT ERROR Density converter circuit error

14 TEMP 1. (PT) OVER Temperature Pt input 1 overflow

15 TENP 1. (PT) UNDER Temperature Pt input 1 underflow

16 TEMP 2. (PT) OVER Temperature Pt input 2 overflow

17 TEMP 2. (PT) UNDER Temperature Pt input 2 underflow

18 TEMP 1. (ANA) OVER Analog temperature input 1 overflow

19 TEMP 1. (ANA) UNDER Analog temperature input 1 underflow

20 TEMP 2. (ANA) OVER Analog temperature input 2 overflow

21 TEMP 2. (ANA) UNDER Analog temperature input 2 underflow

22 PRESS 1. OVER Analog pressure input 1 overflow

23 PRESS 1. UNDER Analog pressure input 1 underflow

24 PRESS 2. OVER Analog pressure input 2 overflow

25 PRESS 2. UNDER Analog pressure input 2 underflow

26 DENSITY OVER Density input overflow

27 DENSITY UNDER Density input underflow

28 4mA SCALER 1 UNDER Analog output 1 underflow

29 20mA SCALER 1 OVER Analog output 1 overflow

30 4mA SCALER 2 UNDER Analog output 2 underflow

31 20mA SCALER 2 OVER Analog output 2 overflow

NOTE: Depending on the model in service, some of the messages are not shown.

11. BEHAVIOR IN ERRATIC CONDITIONS

(1) Erratic A/D Converter

If, following energization of A/D converter circuit, the conversion process is not completed within the specified time period, it is found that the circuit has a problem. At this point, temperature and pressure fallback values are used for calculation.

(2) Temperature and Pressure Input Out of Range

If the input exceeds the high limit or falls below the low limit, its default fallback value is used for calculation.

(3) Analog Output Overflow

A full scale output is produced across the analog output terminals.

Page 17

12. OVERALL BLOCK DIAGRAM

Power

Flowinput

1/1output

Densityinput

Press.input

Temp.input

Analogoutput

Pulseoutput1

Pulseoutput2

Pulseoutput3

Comport

Terminal

Block

Addresspath

Datapath

PowerBoard

InterfaceBoardCommunicationBoard

CPUBoard

I/OBoard

PowerUnit

Internal

Power

FlowInputCkt.

Dens.InputCkt.

A/D

Converter

Press.InputCkt.(analog)

Temp.InputCkt.(analog)

Temp.InputCkt.(Pt)

AnalogOutputCircuit

PulseOutputCircuit1

PulseOutputCircuit2

PulseOutputCircuit3

Multi

plexer

Isolation

TestPins

Internal

Volt.

Buzzer

Motherboard

Keyboard

ICCard

128×128dots

STDisplay

RUN

×8keys

Isolation

ParallelI/O

TimerCounter

ParallelI/O

CPU

20MHz

Memory

RS485

Isolation

ICCard

Interface

Circuit

32.768kHz

RealTime

Clock

Lithium

Battery

Isolation

PowerDetect

Fuse

E-888-5-E

Fig. 12.1 Overall Block Diagram

Page 18

E-888-5-E

⑧−⑥⑤④③②① ⑯⑮−⑪⑩⑨ ⑰ ㉒㉑⑳ ㉔㉓㉕⑲⑱

Model

Input pulse signal Power supply

Output item 1 affix code

Output item 3 affix code

Analog output hard

Output item 4

Version code

Communication function

Characteristic

Output item 2 affix code

Output item 2

Output item 3

Output item 1

Temp. input

Others

Density input

Pressure input

Main code

/ // Additional code

− ㉙㉗㉖⑫ ⑬

13. PRODUCT CODE EXPLANATION

●

Main code

① ② ③ ④ ⑤ ⑥

E L 4 5 0 1 Flow computer for multi temp. compensation for liquid

⑦

⑧

D 20 to 30VDC

J 85 to 264VAC 50/60Hz

⑨ Input pulse signal

B Voltage pulse 12V 2 wires / 3 wires

C Current pulse 12VDC (PG30S)

D Current pulse 24VDC (4/20mA)

G Open collector pulse 12VDC 2 wires / 3 wires

K Contact pulse 12VDC 2 wires / 3 wires

Z Special

⑩

N Non

B 1 to 5V

E 4 to 20mA

F Pt100Ω

G JPt100Ω

Z Special

⑪

⑫

⑬

⑭

⑮ ⑯

Pulse output 1

B 1 Before correction/pulse width 1ms

B 5 Before correction/pulse width 50ms

B 9 Before correction/special pulse width

V 1 After viscosity correction/pulse width 1ms

V 5 After viscosity correction/pulse width 50ms

V 9 After viscosity correction/special pulse width

T 1 After viscosity temp. correction/pulse width 1ms

T 5 After viscosity temp. correction/pulse width 50ms

T 9 After viscosity temp. correction/special pulse width

A L Alarm output

Z Z Special

⑰

N Non

Model

—

Power supply

Temp. input

Pressure input

Non

Density input

Non

Others

Non

—

Output item 1

Output item 1 afﬁx code

Output item 2

⑱ ⑲

Pulse output 2

B 1 Before correction/pulse width 1ms

B 5 Before correction/pulse width 50ms

B 9 Before correction/special pulse width

V 1 After viscosity correction/pulse width 1ms

V 5 After viscosity correction/pulse width 50ms

V 9 After viscosity correction/special pulse width

T 1 After viscosity temp. correction/pulse width 1ms

T 5 After viscosity temp. correction/pulse width 50ms

T 9 After viscosity temp. correction/special pulse width

A L Alarm output

Z Z Special

Output item 2 afﬁx code

⑳

N Non

Output item 3

󰼼 󰽇

Pulse output 3

B 1 Before correction/pulse width 1ms

B 5 Before correction/pulse width 50ms

B 9 Before correction/special pulse width

V 1 After viscosity correction/pulse width 1ms

V 5 After viscosity correction/pulse width 50ms

V 9 After viscosity correction/special pulse width

T 1 After viscosity temp. correction/pulse width 1ms

T 5 After viscosity temp. correction/pulse width 50ms

T 9 After viscosity temp. correction/special pulse width

A L Alarm output

Z Z Special

Output item 3 afﬁx code

󰽈

N Non

Output item 4

󰽉

Analog output assignment

T Temperature

Z Special

Analog output hard

󰽊

2 1 to 5V

5 4 to 20mA

Z Special

Communication function

󰽋

N Non

R RS-485

Version code

󰽌

A Version code: A

—

󰽍

Characteristic

󰽎

0 Standard

Z Special

Page 19

●

⑧−⑥⑤④③②① ⑯⑮−⑪⑩⑨ ⑰ ㉒㉑⑳ ㉔㉓㉕⑲⑱

Model

Input pulse signal Power supply

Output item 1 affix code

Output item 3 affix code

Analog output hard

Output item 4

Version code

Communication function

Characteristic

Output item 2 affix code

Output item 2

Output item 3

Output item 1

Temp. input

Others

Density input

Pressure input

Main code

/ // Additional code

− ㉙㉗㉖⑫ ⑬

Additional code

Special test (instrumental error)

A 1 0 Taxed custody transfer

A 2 0 By certied measurer

A 3 0 Taxed alcohol

Document

D S J DWG and specications for approval (Japanese)

D S E DWG and specications for approval (English)

D R 0 Re-submission of DWG with specications

D C J Final DWG (Japanese)

D C E Final DWG (English)

D W J Wiring diagram (Japanese)

D W E Wiring diagram (English)

D T J Inspection procedure (Japanese)

D T E Inspection procedure (English)

C B J Inspection certicate: B set Only Japanese

Customer witness inspection

V 1 0 Required

E-888-5-E

Page 20

E-888-5-E

PRODUCT CODE EXPLANATIONOF THE OLD PRODUCT CODE

〈

ThenewproductcodehasbeenimplementedsinceApril2017.

Therefore,theproductcodeexplanationoftheoldproductcodewillnotbeupdatedafterApril2017.

ContactOVALifyouwishtoorderwiththeoldproductcodeforreasonssuchastypeapproval.

〉

Item

① ② ③ ④ ⑤ ⑥ − ⑦ ⑧ ⑨ ⑩ ⑪ ⑫

ＥＬ４ 5 0 １ Multipoint temperature compensated ow computer

Model

ＥＬ４ 5 1 １

Power

Temperature Input

Pulse Output

Analog Output

Communication Capability

Product Code

６ 20 to 30VDC

７ 85 to 264VAC, 50/60Hz

Multipoint temperature compensated ow computer (communication interface provided)

0 None

1 Pt 100Ω at 0℃

2 4 to 20mADC/1 to 5VDC

9 Special

9 S

１ Temperature

９ Special

Uncorrected pulse + pulse corrected for viscosity + pulse corrected f

pecial

０ No (EL4501)

１ Yes (EL4511)

or viscosity and temperature

Description

Power consumption: 20W max.

Finish １ Munsell N1.5

All specifications are subject to change without notice for improvement.

2018.12 Revised △

2008.08 Released E-888-5-E（1）