FLR 1000 & 1000-BR Series Flow Sensors & Meters For Gases
READ THIS MANUAL COMPLETELY BEFORE ATTEMPTING TO CONNECT OR OPERATE YOUR FLOW SENSOR. FAILURE TO DO SO MAY RESULT IN INJURY TO YOU OR DAMAGE TO THE FLOW SENSOR. TABLE A. OF CONTENTS Introduction....................................................................................4 1. Unpacking .................................................................................4 2. Product Overview And Principle Of Operation ...............................4 B. Installation ..................................
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.
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.
1. General Considerations It is recommended that a safety shut-off valve be installed upstream of (before) the sensor. All wetted parts should be checked for compatibility with the gas to be used. If there are any incompatibilities eg. highly corrosive gas, then the unit may be damaged or fail prematurely. Such damage will not be repaired under warranty. Units should be installed in a clean, dry environment with an ambient temperature that is as stable as possible.
3. Tubing Connections CAUTION: DO NOT FLOW ANY LIQUID THROUGH A GAS FLOW SENSOR OR FLOW METER. THIS WILL SERIOUSLY EFFECT THE PERFORMANCE AND VOID THE WARRANTY. CAUTION: DO NOT FLOW A HIGH PRESSURE GAS THROUGH THE SENSOR. A BURST OF HIGH PRESSURE GAS MAY CAUSE THE UNIT TO BE DAMAGED. ALWAYS FLOW GAS AT A PRESSURE AND FLOW RATE WITHIN THE SPECIFCATIONS OF THE UNIT All tubing must be clean, dry and without crimps, burrs or scratches. Only use the factory installed fittings on the unit.
Close Up of Label Showing Flow Direction (FLR 1000 shown, other models similar) The tubing ID should be as large as possible to avoid restrictions and turbulence. For the best results, a straight length of tubing before the unit is recommended. This should be 20 times the tubing I.D. or greater 4. Electrical Connections Caution: Incorrect wiring may cause severe damage to the unit. Applying an AC voltage (115VAC or 230VAC) directly to the unit will cause damage.
Units are supplied with an integral 4 pin connector. Connections to the unit are made using a mating cable assembly or power adapter package as detailed in the following sections. A connector pin and wire color cross reference may also be found in Appendix F (Page 18) of this manual. b) Connecting a Cable Assembly The connector on the end of the cable assembly should be pushed into the mating socket on the sensor taking care to ensure that it is the correct way up.
c) Electrical Connections – Voltage Output Units The cable assembly should be connected to the sensor as detailed in section 5(b) above. Do not apply power to the sensor until all the connections have been made and checked. Electrical connections should be made as follows: Wiring Schematic For Voltage Output Units. The RED wire should be connected to the Positive of the power source. The BLACK wire should be connected to the Negative ( Ground ) of the power source.
d) Using a 0-5VDC Output Power Adapter Package. An optional 0-5VDC Output Power Adapter Package is available for use with the FLR 1000 series (not the FLR 1000-ST-I). This consists of a power source (115VAC or 230VAC) and cable assembly with pig-tail (soldered wire) ends for the signal output. This should be assembled as shown in the following diagram.
C. Operation CAUTION: DO NOT FLOW ANY LIQUID THROUGH A GAS FLOW SENSOR OR FLOW METER. THIS WILL SERIOUSLY EFFECT THE PERFORMANCE AND VOID THE WARRANTY. 1. Start Up Before applying power to the unit check all tubing and electrical connections. Once correct installation is verified switch on the power. 2. Flow Readings The FLR 1000 Series for gases provide a 0-5VDC output proportional to the volumetric flow rate. The FLR 1000-D and FLR 1000-BR-D series feature an integral 3.
100-500 ml/min and in l/min for flow ranges of 0.2 – 1.0 L/min and above. The display will only operate if power is applied to the unit. Flow readings may be taken directly from the display or by monitoring the 0-5VDC analog output provided by using a cable assembly or power adapter package (see above). LCD Flow Display (Model FLR1000-ST-D shown, other models with displays similar) 3. Operating at Flow Rates Outside the Calibrated Flow Range CAUTION:.
4. Zero Adjustments It is impossible for there to be any zero drift so zero adjustments are never required. 5. Recalibration Please contact the Omega Engineering Service Department if your flow sensor or flow meter needs recalibration. 6. Using Flow Sensors or Flow Meters with Different Gases The FLR 1000 Series will operate with most gases subject to compatibility of the wetted parts. For information about calibrating for Hydrogen or Helium, contact the Omega Engineering Service Department.
If the unit has a flow reading of 200ml/min then the corrected flow reading (for CO2) would be: Corrected Flow = 200 X 0.88 = 176 ml/min CAUTION:. The use of correction factors can be subject to inaccuracy and errors of up to ±10%. Please contact the Omega Engineering Service Department if accurate, certified recalibration is required. Calculating a correction factor for a gas enables the calibration of the unit to be adjusted for that gas.
D. Maintenance and Product Care 1. General CAUTION: Do not disassemble your unit for any reason. If the unit appears to be malfunctioning please contact the Omega Engineering Service Department. The FLR 1000 Series of flow meters and sensors require no periodic maintenance if used within the recommended specifications. The next recommended recalibration date is stated on the calibration certificate supplied with the unit. Please contact the Omega Engineering Service Department for further information.
E. Specifications For Gas Units FLR1000 Display FLR1000-D None 3.5 Digit LCD, 0.39” (10mm) high digits Accuracy (including linearity) ±3.0% Full Scale* Repeatability ±0.5% Full Scale* Pressure Rating 40 psig (2.8 bar) Temperature Rating Operating Range: 5 to 55ºC Storage Range: 0 to 70ºC Temperature Sensitivity Wetted Materials ±0.2% F.S.
F. Connector Pin And Wire Color Cross Reference Pin Configuration for Connector Socket and Connector Pin Cable Wire Color Description 1 Black Signal & Power Negative (Ground) 2 White Voltage Output 3 Red Power Positive 4 Green Not Used pg.
G. Dimensions ALL DIMENSIONS IN INCHES (MILLIMETERS IN BRACKETS) FLR 1000 For Gases 20-200 ml/min To 1.0-5.0 l/min Units 1/4” Acetal Fittings Shown pg.
FLR 1000 For Gases 2.0-10.0 l/min Units 1/4” Acetal Fittings Shown pg.
FLR 1000 For Gases 4.0-20.0 l/min To 100-500 l/min Units 1/2” Acetal Fittings Shown pg.
FLR 1000-D For Gases 20-200 ml/min To 1.0-5.0 l/min Units 1/4” Acetal Fittings Shown pg.
FLR 1000-D For Gases 2.0-10.0 l/min Units 1/4” Acetal Fittings Shown pg.
FLR 1000-D For Gases 4.0-20.0 l/min To 100-500 l/min Units 1/2” Acetal Fittings Shown pg.
FLR 1000-BR-D For Gases 20-200 ml/min To 1.0-5.0 l/min Units 1/4” Brass Fittings Shown pg.
H. Troubleshooting Guide Symptom Possible Cause Method of Correction Unit Leaks Fittings not tight enough. Tighten fittings (see section B4) Sensor assembly cracked No power or low power Unit must be returned for repair (see Section J) Apply correct power No flow passing through unit Display or output should read zero.
Symptom Possible Cause Method of Correction Flow indication is not linear and output too low at lower flows Attempting to measure flows below the specified minimum for the unit Use higher flow rates Moisture or liquid in sensor Remove moisture and allow sensor to dry out Mechanical sensor assembly damaged Unit must be returned for repair (see Section J) Gas has a specific gravity other than Air at 20°C Calculate the flow reading error / offset as explained in section C6 Moisture in sensor Allow
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M4575/0807 pg.
