Omega FTB500 Series User Manual Download

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Summary of Contents for FTB500 Series

Page 1: ...Manual OPerator s i i Flowrate Meters Low a Q FTBSOO Series a ...

Page 2: ...dbooks Leicestershire LE9 A y Swannington Road Broughton I 800 USA WHENSM TELEX 996404 EASYLINK 62968934 CABLE OMEGA Servicing Europe United Kingdom Sales and Distribution Center 25 l 80 622 BESP Engineering Service l 800 872 9436 1 800 TC OMEGA M Customer Service l 800 622 2378 856 6886 Sales Service l 800 826 6342 5Al Telephone 203 359 1660 Telephone 514 856 6928 FAX 203 359 7700 FAX 514 H7L Ber...

Page 3: ...set 3 4 Calibration of FTB500 Analog Output 3 3 To Confirm 3 2 Calibration Procedure I 2 3 1 Introduction 9 SECTION 3 CALIBRATION 8 7 6 7 Installation of the FTB500 Mini Flow Signal Conditioner General Installation Wiring Layout for Interconnections Operation 6 2 1 2 2 2 3 2 4 2 5 Unpacking SECTION 2 INSTALLATION 1 3 3 Viscosity Calibration and UVC Curves 1 3 2 Viscosity Effects 1 3 1 Performance ...

Page 4: ...ilable 3 Configurable pulse voltage or analog output options 1 2 AVAILABLE MODELS DESCRIPTION LINEAR FLOW RANGE STANDARD PART NUMBERS 0 02 to 0 15 GPM 0 025 to 0 25 GPM 0 05 to 0 5 GPM 0 1 to 1 0 GPM 0 2 to 2 0 GPM OPTIONAL PART NUMBERS PART NUMBER pelton wheel like rotor whose motion is converted into a pulse output proportional to flow by a pickup coil They come with an integral signal condition...

Page 5: ...ped into a train of digital pulses whose frequency is non linearly related to the volume flow rate The digital pulse train is then passed through the linearizer where the off set frequency signal is injected into it For flow rates within the range of the meter the linearizer output will be linearly related to the volumetric flow rate In addition this circuitry drives the low flow out of range indi...

Page 6: ...w to prevent false outputs from being generated The FTB500 Series Turbine Meter is a family of low flow rate measurement devices based on a flowrate which does not pass through zero left uncorrected this will result in a K factor which varies with flow rate The CMOS lTL compatible output The attenuator produces a capacitor coupled AC out put which is suitable for driving other signal conditioners ...

Page 7: ...Calibration Curve 4 FLOWRATE Figure 1 3 Normalized OF MAX IMUM 80 10 50 100 I_7 f 1 00 7 UNLINEARIZED 5 90 8 u FTBSOO Output Characterlstlcs Diagram LINEARIZED GPM Figure 1 2 UN LINEARIZED OUTPUT FLOW RATE lL ...

Page 8: ...owing conditions The repeatability is defined as the allowable percentage deviation from the stated K Factor The pressure drop characteristics are given based on water at a viscosity of 1 Cpse and a specific gravity of 1 00 For other fluid s the following equa tion may be used to estimate the pressure drop across the 2 are possible using smart transmitters which can store the entire characteristic...

Page 9: ...B500 Series Flowmeter for operation on a viscous fluid it is generally preferable to size the flowmeter so it will be operating in the higher portion of its range to minimize viscosity effects in the measurement Some loss in flow turndown range may be expected 1 3 3 Viscosity Calibration and UVC Curves In some flowmeter applications the viscosity is held nearly constant owing to regulated conditio...

Page 10: ...e FTB500 Mini Flow Signal Conditioner properly installed and calibrated verify the following performance With the power ON and no flow through the flowmeter there should be no pulse output from the unit To verify this connect either a digital Frequen cy Counter or an AC voltmeter If using a Digital Frequency Counter the display should display zero If some other constant or varying indication occur...

Page 11: ... proper interconnecting cabling cross talk with other signal lines or power lines may still occur and should be avoided Physical isolation in the manner in which the wiring is run reduces the chance of potential problems B pickoff device The metering section should not be subjected to excessive vibration or shock Such a condition may result in a mechanically induced output signal from the In gener...

Page 12: ...ppropriate mounting holes as required Mount the unit to the panel Refer to Figure 2 3 for DC hookup or Figure 2 4 for FTB500 MINI FLOW SIGNAL CONDITIONER The It is common to transmit the low level output signal from the flowmeter several hundred feet through a shielded twisted pair instrument cable Where a noisy environment is suspect it is recommended that a pre amplifier be installed on or near ...

Page 13: ...INSTALL A JUMPER FROM TERMINAL 8 TO TERMINAL 1 Figure 2 3 DC Input Installation FTB500 IS NOTE THE DC VOLTAGE INPUT TERMINAL BLOCK 2 1234567 8 F TEBT 0 1 P OPTION COMMON _ 0 SIGNAL PULSE OUTPUT RETURN TERMINAL ANALOG OUTPUT BLOCK 1 STANDARD SIGNAL 1 Lo 0 _ B 0 1 I 1 I i To PICKUPCOIL 7x I A ...

Page 14: ... NOTE Figure 24 TlON SIGNAL TO INJECT THIS TEST INSTALL A JUMPER FROM TERMINAL FTB500 IS EQUIPPED WITH AN INTEGRAL CALIBRE SIGNAL 8 TO TERMINAL 1 THE NEUTRALS TERMINAL BLOCK 1 TERMINAL BLOCK 2 E u F TEST IIBVAC 50160 Hz INPUT Ayy Xl PICKUP COIL ...

Page 15: ...side the signal conditioner inside the rectangular case on the top printed circuit board just beneath terminal I Slowest response time with poten tiometer fully counter clockwise is 2 seconds Increasing the response time can act to reduce jitter in the analog output Begin by determining the offset frequency of the mini flowmeter This is sup plied on the calibration card FTB500 flowmeter systems su...

Page 16: ...e following set points indicated by Equation I through Equation 3 Use the frequency F TEST depending on calibration method chosen above 3 4 2 Equations Equation 1 jumpered to the input Terminal 8 tied to Terminal FTBBOO ANALOG OUTPUT 3 4 1 Set Up The signal conditioner may be calibrated with an internal TEST frequency or an external oscillator used in conjunction with a frequency counter METHOD 1 ...

Page 17: ...er TABLE 3 1 RANGE SELECT SWITCHES F MAX RANGE SELECT SWITCH POSITION 300 to 600 3 600 to 1200 4 1200 to 2400 5 2400 to 4800 6 2 Turn the SPAN potentiometer fully counter clockwise until slippage is felt or 25 turns Refer to Figure 3 1 mA for 4 to 20 mA output 5V for 0 to 5V output ZERO fixed offset component of analog output For example 4 mA for 4 to 20 ifi PULSE GAL SPAN varying component of ana...

Page 18: ...hed to determine the amount of wear which has occurred since last overhaul In case the flow measurement system malfunctions or becomes in operative refer to the Troubleshooting Guide in Section 5 SERVICING AND PREVENTATIVE MAINTENANCE OF THE 3 l so the current equals to SET SPAN 6 Repeat steps 4 and 5 until no change is observed FOR VOLTAGE OUTPUT OPTION ONLY 7 Connect a digital voltmeter across t...

Page 19: ...ROTOR WHEN LOOK ING DOWN FROM TOP DETA IL OF ROTOR F igure 4 1 S tandard Ba llBear ing Cu ta way D iagra m 16 WELO CORRECT OR IENTAT ION OF FL OW 8 FL OW ...

Page 20: ...ise Me ter orien tation should be such that the threaded plug is facing upwards Using a screwdriver and turning counter clockwise break the seal and re move the plug Using tweezers or needle nose pliers slowly pull the insert out while taking care not to da m age the shaft or lose the thrust stop Remove the rotor by using a pair of tweezers Remove the shaft asse m bly with s m ooth needle nose pli...

Page 21: ...Wiring Figure 5 1 Internal FTBSOO SIGNAL CONDITIONER 11 1 11 COIL 1 0 GRN PCA 115 WHT BLK I II ACIDC POWER SUPPLY ANALOG OUTPUT I PCA 112 FiTESTi TO PICKUPCOIL ANALOG OUPUT COMMON PULSE OUTPUT COMMON ...

Page 22: ...ntinues to blow fuses it is advisable to return it to the factory This defect is difficult to diagnose in an assembled system 1 Turn sensitivity FTB500 an internal 120 Hz test frequency has been provided Refer to Section 3 2 Calibration Procedure Failure conditions are listed and the possible corrective actions are given to eliminate the observed problems Cont d In case of an inoperable or malfunc...

Page 23: ...PUT CARD 1 PCA II4 PCA 115 DESCRIRTION SENS potentiometer slowly ccw NOTE Fully CCW will make the unit inoper ative 2 Replace PCA 112 SECTION 6 RECOMMENDED SPARE PARTS LIST PART NUMBER PCA 112 Cont dl OBSERVED CONDITION CORRECTIVE ACTION Unit does not function I PCA 115 has incorrect offset frequency setting 2 Replace PCA 115 3 Flowmeter used below or above normal range Obtain correct flowmeter An...

Page 24: ...set frequency with post scaling and low flow alarm 7 to 150 Hz 200 parts per 50 60 Hz optional Input protected RF and band pass filtered adjustable trigger level Input impedance 4OkQ Trigger sensitivity IOmV minimum 10 Hz to 1000 Hz Over 115VAC mA standard bP OPTION REFER TO SECTION 1 2 ANALOG OUTPUTS CURRENT OUTPUT STANDARD ACCURACY RANGE RESPONSE TIME VOLTAGE OUTPUT OPTIONAL ACCURACY RANGE IMPED...

Page 25: ...gram the module to accept an input frequency range A multiple turn adjustment potentiometer which is used to set the current voltage output signal with no flow to the desired zero value i e 4 37O flare per MS 33656 8 n 150 C 316 Stainless Steel 44oc 17 4 PH Viton 450 F 65 to 450 to 176OF 4O to I OA 2N6660 Maximum OFF state voltage 60 VDC Maximum ON cur rent V transistor fanout of IO TTL CMOS loads...

Page 26: ... on the PCA 112 board which is used to select the desired pulse output scaling factor 23 1OV cor responding to mA or 0 to mA equivalent flow range i e 4 to 20 SPECIFICATIONS Cont d SPAN RESPONSE SCALING FACTOR A multiple turn adjustment potentiometer which is used to set the current voltage output signal to the desired span cor responding to ...

Page 27: ...be liable for consequential incidental or special damages Every precaution for accuracy has been taken in the preparation of this manual however OMEGA ENGINEERING INC neither assumes responsibility for any omissions or errors that may appear nor assumes liability for any damages that result from the use of the products in accordance with the information contained in the manual SPECIAL CONDITION Sh...

Page 28: ...tivity Equipment DATA ACQUISITION pH m Industrial Pumps m Controllers Calibrators Simulators m Benchtop Laboratory Meters Accessories pH Electrodes Testers g Batch Controllers H CONDUCTIVITY Totalizers Turbine Paddlewheel Systems Air Velocity Indicators Flow Computers Rotameters Gas Mass Flowmeters LEVEL Accessories FLOW k Instrumentation m Displacement Transducers Pressure Gauges B Load Cells Str...

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