Omega FDT-25, Руководство пользователя

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FDT-25 Handheld Ultrasonic Flowmeter
Contents
1. Introduction………………………………………………………………………………………… 1
§ 1.1Preface………………………………………………………………………..………
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1.2 Features…………………………………………………………………………… 1
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1.3 Principle ofMeasurement …………………………………………………………… 2
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1.4PartsIdentification……………………………………………………………………… 3
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1.5 TypicalApplications……………………………………………………………………
5
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1.6 Data Integrity and Built-in Time-Keeper……………………………………………………
5
§ 1.7Product Identification…………………………………………………………………… 6
§ 1.8Specifications……………………………………………………………………………6
2. Starting Measurement …………………………………………………………………………… 7
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2.1 Built-in Battery…………………………………………………………………………7
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2.2PowerOn……………………………………………………………………………… 7
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2.3Keypad …………………………………………………………………………… 8
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2.4MenuWindows………………………………………………………………………… 8
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2.5 Menu Windows Arrangement…………………………………………………………9
§ 2.6Steps to Configure the Parameters …………………………………………………………10
§ 2.7TransducersMountingAllocation………………… ………… ……………………………11
§ 2.8TransducersInstallation ………………………………………………………………12
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2.8.1TransducersSpacing………………………………………………………………… 12
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2.8.2V-methodInstallation………………………………………………………………… 12
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2.8.3 Z-method Installation………………………………………………………………13
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2.8.4 W-method Installation……………………………………………………………13
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2.8.5 N-method Installation…………………………………………………………… 14
§ 2.9 InstallationCheckup………………………………………………………………… 14
§ 2.9.1 SignalStrength………………………………………………………………… 14
§ 2.9.2 Signal Quality……………………………………………………………………14
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2.9.3 Total Transit Time and Delta Time………………………………………………14
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2.9.4TimeRatiobetweentheMeasuredTotal Transit Timeand the CalculatedTime…………15
3. How To…………………………………………………………………………………………… 16
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3.1How tojudgeif theinstrumentworksproperly……………………………………………… 16
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3.2 How to judge the liquid flowing direction
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§ 3.3 How to change between units systems……………………………………………………
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§ 3.4 How to select a required flow rate unit……………………………………………………
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§ 3.5 How to use the totalizer multiplier………………………………………………………
16
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3.6 How to open or shut the totalizers……………………………………………………… 16