Longrun LRF-3000S - Table of Contents

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LRF-3000S Ultrasonic Transit-time Flow meter

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Content

1. Product Overview ............................................................................................................................................ -4-

1.1. Introduction...................................................................................................................................... -4-

1.2. Features of LRF-3000S .................................................................................................................... -4-

1.3. Theory of Operation......................................................................................................................... -4-

1.4. Specifications ................................................................................................................................. - 5 -

2. Connection ..................................................................................................................................................... - 6 -

2.1. Wire Connecting ............................................................................................................................ - 6 -

2.1.1. Power supply option .............................................................................................................. - 6 -

2.1.2. Transmitter Wiring ................................................................................................................. - 6 -

2.2. Powering on ................................................................................................................................... - 7 -

2.3. Keypad Functions .......................................................................................................................... - 8 -

2.4. Keypad Operation ............................................................................................................................ -8-

3. Quick start .............................................................................................................................................. - 9 -

3.1. Basic settings ................................................................................................................................. - 9 -

3.2. Measurement Site Selection ......................................................................................................... - 10 -

4. Transducer Installation ........................................................................................................................ - 13 -

4.1. Transducer Installation ................................................................................................................. - 13 -

4.1.1. Transducer Spacing .............................................................................................................. - 13 -

1.1.2 Transducer Mounting Methods ............................................................................................ - 13 -

4.1.3. V Method ............................................................................................................................. - 13 -

4.1.4. Z Method ............................................................................................................................. - 14 -

4.2. Transducer Mounting Inspection ................................................................................................. - 14 -

4.2.1. Signal Strength ..................................................................................................................... - 15 -

4.2.2. Signal Quality (Q value) ...................................................................................................... - 15 -

4.2.3. Total Time and Delta Time .................................................................................................. - 15 -

4.2.4. Transit Time Ratio ............................................................................................................... - 15 -

4.2.5. Warnings .............................................................................................................................. - 16 -

5. Operating Instructions ......................................................................................................................... - 17 -

5.1. System Normal Identification ...................................................................................................... - 17 -

5.2. Low Flow Cutoff Value ............................................................................................................... - 17 -

5.3. Zero Settings ................................................................................................................................ - 17 -

5.4. Scale Factor ................................................................................................................................. - 17 -

5.5. System Lock ................................................................................................................................ - 18 -

5.6. 4 ~ 20mA Current Loop Output ................................................................................................... - 18 -

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