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Summary of Contents for Greyline Instruments DFS 5.1
- Page 1 USER'S GUIDE Installation & Operation Instructions Doppler Flow Switch Model DFS 5.1 Manual Series 1.4...
- Page 2 Note: This page has been left blank intentionally.
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Page 3: Table Of Contents
TRANSDUCER INSTALLATION ................. 8 ENCLOSURE INSTALLATION ................11 PRINCIPLE OF OPERATION ................11 APPLICATIONS BACKGROUND ..............13 TYPICAL DFS 5.1 CONTROL APPLICATIONS ..........14 APPLICATIONS HOTLINE ................. 15 PRODUCT RETURN PROCEDURE ..............15 SPECIFICATIONS ....................17 APPENDIX A - OPTIONS ................... 18 APPENDIX B ...................... -
Page 4: Introduction
Doppler frequency from the transmitted frequency and an adjustable set-point relay. The relay also has hysterisis and delay-off capability. The DFS 5.1 Flow Switch is housed in a watertight NEMA4X fiberglass enclosure and requires a 115VAC power supply. -
Page 5: Connections
DFS 5.1 Doppler Flow Switch CONNECTIONS: SENSOR: Connect one sensor coaxial cable to the Rx and GND terminal block, and the second sensor coaxial cable to the Tx and GND terminal block. Tx and Rx are the solid core of each coaxial cable, and GND is the stranded shield of each coaxial cable. - Page 6 DFS 5.1 Doppler Flow Switch DFS 5.1 DOPPLER FLOW SWITCH CALIBRATION Page 6...
- Page 7 DFS 5.1 Doppler Flow Switch DFS 5.1 DOPPLER FLOW SWITCH CALIBRATION Page 7...
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Page 8: Transducer Installation
DFS 5.1 Doppler Flow Switch TRANSDUCER INSTALLATION MOUNTING LOCATION - The position of the sensor is one of the most important considerations for reliable flow monitoring. The same location guidelines apply to Doppler as to most other types of flow switches. - Page 9 DFS 5.1 Doppler Flow Switch One PCK2 Pipe Clamp Kit is included with each Greyline DFS 5.1. It includes recommended silicone coupling compound in a plastic applicator, a stainless steel sensor bracket, and a stainless strap for pipe diameters up to 16” 406 mm. Additional pipe clamps (optional) may be attached for larger diameter pipes.
- Page 10 DFS 5.1 Doppler Flow Switch SENSOR COUPLING AND MOUNTING RECOMMENDATIONS Page 10...
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Page 11: Enclosure Installation
DFS 5.1 Doppler Flow Switch ENCLOSURE INSTALLATION NEMA4X (IP66) WITH CLEAR COVER LOCATION - Select a wall location within 20 ft (6 m) of the sensor mounting location. Sensor cable may be extended up to 500 ft (150 m) if enclosure installation is required at a remote location. - Page 12 DFS 5.1 Doppler Flow Switch SENSOR CABLE RESISTANCE TEST Unplug the green sensor terminal from the Doppler board and connect the sensor wires as shown. With a multimeter, perform resistance checks for each set of wires. One single loose terminal may cause false readings.
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Page 13: Applications Background
Higher or lower temperatures may damage or reduce the operating life of the sensor. CALIBRATION DRIFT - The DFS 5.1 calibration does not drift over time. The solid state sensor has no moving parts to wear and affect calibration. The Doppler principle generates a digital signal proportional to the velocity of flow. -
Page 14: Typical Dfs 5.1 Control Applications
DFS 5.1 Doppler Flow Switch TYPICAL DFS 5.1 CONTROL APPLICATIONS Page 14... -
Page 15: Applications Hotline
DFS 5.1 Doppler Flow Switch APPLICATIONS HOTLINE For applications assistance, advice or information on any Greyline Instrument contact your Sales Representative, write to Greyline or phone the Applications Hotline below: United States: Tel: 315-788-9500 Fax: 315-764-0419 Canada: Tel: 613-938-8956 Fax: 613-938-4857... - Page 16 DFS 5.1 Doppler Flow Switch LIMITED WARRANTY _____________________________________ Greyline Instruments warrants, to the original purchaser, its products to be free from defects in material and workmanship for a period of one year from date of invoice. Greyline will replace or repair, free of charge, any Greyline product if it has been proven to be defective within the warranty period.
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Page 17: Specifications
DFS 5.1 Doppler Flow Switch SPECIFICATIONS Sensor Mounting: Silicone coupling compound, PCK stainless steel Pipe Clamp Kit for 0.5" / 12.5 mm OD pipes or larger Electronics Enclosure: watertight, dust-tight NEMA4X (IP67) polycarbonate Output: 1 Relay – 5 ampere DPDT Set Point: On/Off adjustment 0.25 –... -
Page 18: Appendix A - Options
DFS 5.1 Doppler Flow Switch APPENDIX A - OPTIONS EXTRA SENSOR CABLE (OPTION DXC) Each Greyline flow switch includes 20 ft. (6m) shielded coaxial pair cable. Additional cable and Cable Junction Box (Option JB2X) may be ordered with the Flow Switch, or the cable may be spliced and extended up to 500 ft (152m) as required during installation. - Page 19 DFS 5.1 Doppler Flow Switch SENSOR CABLE JUNCTION BOX (OPTION JB2X) Optional Watertight NEMA4 Junction Boxes with terminal strips are available from Greyline Instruments. 24VDC POWER INPUT (OPTION DC) DFS 5.1 DC Flow Switches are factory configured for 12-24VDC power input. Page 19...
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Page 20: Appendix B
DFS 5.1 Doppler Flow Switch APPENDIX B FLOW VELOCITY CALCULATION Flow velocity can be calculated from the following data. KNOWN FLOW DIVIDED BY VELOCITY U.S. gallons/sec. 0.0408 x (pipe I.D.")² = ft/sec U.S. gallons/min. 2.448 x (pipe I.D.")² = ft/sec Imp. - Page 21 DFS 5.1 Doppler Flow Switch FLOW CHART U.S. Gallons per Minute Pipe Velocity in Feet per Second ID in. 10.0 11.0 12.4 13.8 12.2 14.7 17.1 19.6 22.0 24.5 11.5 15.3 19.1 23.0 26.8 30.6 34.4 38.3 11.0 16.5 22.0 27.5...
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