GE CTF878 Guide de dépannage

Sensing

Model CTF878

Clamp-On Tag Flowmeter

User’s Service Manual

Sensing

Model CTF878

Clamp-On Tag Flowmeter

User’s Service Manual

910-254SA4

February 2009

iii

February 2009

Warranty Each instrument manufactured by GE Sensing, Inc. is warranted to be

free from defects in material and workmanship. Liability under this

warranty is limited to restoring the instrument to normal operation or

replacing the instrument, at the sole discretion of GE. Fuses and

batteries are specifically excluded from any liability. This warranty is

effective from the date of delivery to the original purchaser. If GE

determines that the equipment was defective, the warranty period is:

•one year for general electronic failures of the instrument

•one year for mechanical failures of the sensor

If GE determines that the equipment was damaged by misuse,

improper installation, the use of unauthorized replacement parts, or

operating conditions outside the guidelines specified by GE, the

repairs are not covered under this warranty.

The warranties set forth herein are exclusive and are in lieu of

all other warranties whether statutory, express or implied

(including warranties of merchantability and fitness for a

particular purpose, and warranties arising from course of

dealing or usage or trade).

Return Policy If a GE Sensing, Inc. instrument malfunctions within the warranty

period, the following procedure must be completed:

1. Notify GE Sensing, Inc., giving full details of the problem, and

provide the model number and serial number of the instrument. If

the nature of the problem indicates the need for factory service,

GE Infrastructure Sensing, Inc. will issue a RETURN

AUTHORIZATION number (RA), and shipping instructions for the

return of the instrument to a service center will be provided.

2. If GE instructs you to send your instrument to a service center, it

must be shipped prepaid to the authorized repair station indicated

in the shipping instructions.

3. Upon receipt, GE will evaluate the instrument to determine the

cause of the malfunction.

Then, one of the following courses of action will then be taken:

•If the damage is covered under the terms of the warranty, the

instrument will be repaired at no cost to the owner and returned.

•If GE determines that the damage is not covered under the terms

of the warranty, or if the warranty has expired, an estimate for the

cost of the repairs at standard rates will be provided. Upon receipt

of the owner’s approval to proceed, the instrument will be repaired

and returned.

February 2009

Table of Contents

Chapter 1: Diagnostics

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1

Entering the Service Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1

Displaying Diagnostic Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

Signal Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3

Setting Up Signal Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3

Setting Error Limits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

The Test Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7

Testing the Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

Testing the Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9

Testing the Watchdog Timer Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10

Chapter 2: Resetting and Updating

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1

Entering the Service Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1

Resetting to Factory Default Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2

Updating CTF878 Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3

Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4

Setting Up the PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5

Installing New Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7

Completion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-10

Chapter 3: Calibration

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

Entering the Calibration/Test Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

Testing and Calibrating Analog Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

Testing Analog Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

Calibrating Analog Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

Testing and Calibrating Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4

Testing Analog Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4

Calibrating Analog Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5

Testing and Calibrating Digital Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6

Testing Digital Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6

Calibrating (verifying the accuracy of) Digital Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7

Testing and Calibrating RTD’s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8

Testing RTD’s. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8

Calibrating RTD’s. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9

Testing EEPROM’s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10

February 2009

Table of Contents (cont.)

Chapter 4: Troubleshooting

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Error Code Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Displaying Diagnostic Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Pipe/Fluid Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Gas Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Pipe Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Transducer Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Chapter 5: Parts Replacement

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Replacing the Fuse. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Removing the Printed Circuit Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Installing an Option Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Installing the Printed Circuit Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Replacing the LCD Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Appendix A: Service Record

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Data Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Chapter 1

Diagnostics

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Entering the Service Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Displaying Diagnostic Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Signal Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Setting Error Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

The Test Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Diagnostics 1-1

February 2009

Introduction For convenience, the CTF878 offers a Service Menu (see the Service

Menu Map, Figure 3-10 on page 3-11). This menu enables the user to

perform a variety of functions that might occasionally be required.

Those covered in this chapter include:

•run diagnostics

•set up signal and data processing parameters

•define error limits

•test the CTF878 screen and keys

•diagnose setup problems

Entering the Service

Menu To enter the Service Menu, press the [MENU] key at the lower right of

the CTF878 keypad. The Menu Bar replaces the Status Bar at the top

of the screen. Press the [X] arrow key to scroll from the Site Menu to

the Service Menu. At the Service Menu, press [ENTER]. The screen

appears similar to Figure 1-1 below.

Figure 1-1: Service Menu

To scroll to a particular option, press the [T] or [S] arrow keys until

you reach the option. Then press [ENTER] to open the option window.

When entering parameters in an option, press:

•the [T] key to step through the available parameters.

•the [S] key to scroll back to a previously entered parameter.

•the [F2] key (Cancel) or the [ESC] key to exit an option at any time

and return to Operate Mode without changing the parameters.

Units Test

Site Program Meter Logging

Signal Setup

Error Limits

Test

Factory Defaults

Flash Update

Calibrate/Test

Test EEProm

0 50 100

15.38

Service

Diagnostics

Velocity, m/s

Corr SNR

February 2009

1-2 Diagnostics

Displaying Diagnostic

Parameters The Diagnostics option enables you to view current diagnostic

parameters without having to open a display window in Operate

Mode. To enter the option, scroll to the Diagnostics entry on the

Service Menu and press [ENTER]. The screen appears similar to

Figure 1-2 below.

Figure 1-2: Diagnostics Tests Window

Press [F2] (Cancel) or [F3] (OK) to close the window and return to

Operate Mode.

Note: For an explanation of diagnostic parameters, refer to

Chapter 4, Troubleshooting.

OKCancel

Meter Error 0x0004

Carr A

Carr G

I A

Q A

Mod G

TAU

Corr SNR

1000

9.72

390

680

–3.13

19.25

–4.65

992

7.26

487

586

Down

Diagnostic Tests

Diagnostics 1-3

February 2009

Signal Setup The Signal Setup option enables you to set parameters that affect the

flowmeter’s signal processing and outputs:

•Zero Cutoff

•Velocity Averaging

•Errors Allowed

To enter the option, scroll to the Signal Setup entry on the Service

Menu and press [ENTER]. The screen appears similar to Figure 1-3

below.

Figure 1-3: Signal Parameter Window

Setting Up Signal

Parameters

1. Press the [T] arrow key to enter the window.

2. The first prompt allows you to select or not select Reverse Flow.

a. Press [ENTER] to select Reverse Flow, and press the [T] arrow

key to enter the next prompt, or

b. Press [ENTER] again to deselect Reverse Flow, and press the

[T] arrow key to enter the next prompt.

AgcMgc CCorr Avg LP Filter

.5Zero Cutoff m/s

OKCancel

Velocity Averaging

Errors Allowed 2

None

Reverse Flow

Signal Setup

Signal

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