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Фрагмент инструкции
TABLE OF CONTENTS A. Introduction....................................................................................4 1. Unpacking .................................................................................4 2. Product Overview And Principle Of Operation ...............................4 B. Installation .....................................................................................5 1. General Considerations...............................................................6 2. Mounting the Flow Sensor or Flow Meter .......................................6 3. Tubing Connections ....................................................................7 4. Electrical Connections .................................................................8 a) Overview .............................................................................8 b) Connecting a Cable Assembly...................................................9 c) Electrical Connections - Voltage Output Units ...........................10 d) Using a 0-5VDC Output Power Adapter Package......................11 C. Operation....................................................................................12 1. Start-Up ...................................................................................12 2. Flow Readings ..........................................................................12 a) 0-5VDC Analog Outputs ........................................................12 b) Units with an Integral Display ..................................................12 3. Operating at Flow Rates Outside the Calibrated Flow Range .........13 a) Flows Above the Maximum Rated Flow.....................................13 b) Flows Below the Maximum Rated Flow .....................................13 4. Zero Adjustments ......................................................................14 5. Recalibration ............................................................................14 6. Using Flow Sensors or Flow Meters with Different Gases................14 D. Maintenance And Product Care......................................................16 1. General ...................................................................................16 2. Cleaning and Flushing...............................................................16 3. Returning Units For Repair Or Recalibration .................................16 E. Specifications ...............................................................................17 F. Connector Pin and Wire Color Cross Reference ...............................18 G. Dimensions ..................................................................................19 H. Trouble Shooting Guide.................................................................26 pg. 3 of 29 A. Introduction 1. Unpacking All units are suitably packaged to prevent damage during shipping. If external damage is noted upon receipt of the package, please contact Omega Engineering immediately. Open the package from the top, taking care not to cut too deeply into the package. Remove all the documentation and contents. Take care to remove all the items and check them against the packing slip. The products should also be checked for any concealed shipping damage. If any shortages or damage is noted, please contact the shipping company and/or Omega Engineering to resolve the problem. Typical Contents ofBox: Sensor, Calibration Certificate & Instruction Manual (Model FLR1000 shown, other models similar). FLR 3100/3100BR/3100ST Series Fl S & M F Caution: Take care not to drop your sensor or subject it to sudden impact. Read the installation section of this manual before providing power or tubing connections to the unit. Any damage caused by improper installation or careless handling will not be repaired under warranty (see limited warranty on page 28 for more details). 2. Product Overview and Principle of Operation The FLR 1000 series of flow meters and sensors for gases from Omega Engineering are capable of measuring volumetric flows as low as 20-100 ml/min or as high as 100-500 l/min. Highly repeatable results are achieved using a patented Pelton Turbine Wheel flow sensor design. This pg. 4 of 29 proven design minimizes zero drift while maintaining fast response and linear outputs with virtually no maintenance. Flow is measured using a miniature turbine wheel similar in size to a U.S. dime (16 mm diameter, 0.75 mm thick). The micro-turbine wheel is supported on a very small sapphire shaft that is held in position by two sapphire bearings. As flow passes through the sensor, a precision machined nozzle directs the gas onto the very small teeth of the micro-turbine wheel. This causes the wheel to spin at a speed proportional to the volumetric flow rate. The micro-turbine wheel has alternating white and black sections evenly spaced on one side of the wheel. An infrared light beam is directed onto the wheel. As the wheel rotates the infrared beam is reflected off each white section. Th...