Page 3 - CONTENTS
1. DESCRIPTION 1.1 Unit Description ............................................................................................... 11.2 Unit Features ................................................................................................... 11.3 Specifications ................................
Page 4 - PRINCIPLE OF OPERATION
CONTENTS ii 7. PRINCIPLE OF OPERATION 7.1 General .......................................................................................................... 387.2 Orifice Flowmeter Considerations ................................................................. 387.3 Flow Equations ....................
Page 9 - Operation of Serial Port with Modems; ATA
5 FC-21 Flow Computer Operation of Serial Communication Port withPrinters FC-21’s RS-232 channel supports a number ofoperating modes. One of these modes is intendedto support operation with a printer in meteringapplications requiring transaction printing, datalogging and/or printing of calibration a...
Page 10 - bracket over the rear of the case until it snaps in place.; Termination Connectors:; Voltage/current limits are limited by unit specifications.; Mounting Procedure; Mounting Bracket; Standard Mounting; Dimensions
6 FC-21 Flow Computer FC-21 FC-21 Bezel Adaptor Gasket Mounting Bracket 2. Installation 2.1 General Mounting Hints: The FC-21 Flow Computer should be located in an area with a clean, dryatmosphere which is relatively free of shock and vibration. The unit isinstalled in a 5.43" (138mm) wide by 2....
Page 15 - WIRING
11 FC-21 Flow Computer 4 WIRING 4.1 Typical Batcher Wiring: 13 PULSE OUTPUT + PULSE OUTPUT - ANALOG OUTPUT - ANALOG OUTPUT + RLY1 RLY2 AC LINEAC LINE 24 18 COM 19 202122 23 NO NCCOMNO 141516 17 NC POWER IN DC - 4-20 mA COM RLY3 COM RLY4 2627 282930 NO NC NO DC + 25 NC PULSE IN 1 PULSE IN 2 DC OUTPUT...
Page 17 - Front Panel Operation Concept for Run Mode; keys to assign the line.
13 FC-21 Flow Computer 5. UNIT OPERATION 5.1 Front Panel Operation Concept for Run Mode The FC-21 is fully programmable through the front panel. Please review thefollowing usage summary before attempting to use the instrument. HELP On-line help is provided to assist the operator in using this produc...
Page 18 - General Operation; Password Protection
14 FC-21 Flow Computer 5.2 General Operation The unit can display: Rate, Total, Grand Total, Temperature, Density, Presetsand Time of Day. The Temperature and/or Density can be displayed even ifyou are using the Volumetric Flow Equation (a Temperature or Density sensormust be installed). The unit ca...
Page 20 - Batcher Configuration
16 FC-21 Flow Computer 5.4 Batcher Operation The Batcher mode is used primarily to control batches. The main differencebetween the Batch mode and Rate/Total mode is the relay operation. TheBatch mode allows the operator to "START" the unit via the front panel orremote input. Once started, th...
Page 21 - The passwords are factory set as follows:
17 FC-21 Flow Computer Slow Start Quantity The Slow Start Quantity is a function that allows an amount to be entered for aSlow Start up. This function requires two stage valve control. RLY 1 (slow flow)will energize for Slow Start and RLY 2 (fast flow) will energize after the SlowStart Quantity has ...
Page 24 - Menus; Through
20 FC-21 Flow Computer SELECT OPERATE STATERun Setup Test SELECT EZ SETUP ARE YOU SURE?No Yes INSTRUMENT TYPERate/Tot Batch RATE TIME BASESec Min Hour Day RATE DEC PLACES 0 TOTAL VOLUME UNITS gal TOTAL DEC PLACES 0 K_FACTOR TYPEAvg LinTbl UVC AVERAGE KA-FACTOR ####### P/gal LINEAR TABLE KAFre01:####...
Page 25 - Setup
21 FC-21 Flow Computer 6.3 Setup Menus 6.3.1Top Level SetupMenu Menus Display Notes 6.3.2SubmenuGroups SELECT OPERATE STATERun Setup Test SELECT EZ SETUP INSTRUMENT TYPE SELECT FLOW EQUATION SETUP INDICATORS SETUP FLOW INPUT SETUP AUX INPUT SET FLUID PROPERTIES SETUP PULSE OUTPUT SETUP ANALOG OUTPUT...
Page 26 - Refer to page 20 for EZ Setup routine.; Advance To; Batch
22 FC-21 Flow Computer Notes Display Sub-menus 6.4 Setup Sub-Menus Refer to page 20 for EZ Setup routine. Press the DOWN (stop) key to advance toInstrument Type. Press the UP (start) key toadvance to Administrative Setup. Press ENTER to enter Instrument Type sub-menus. Press ENTER when Rate/Total is...
Page 27 - Press ENTER to begin setup of the Indicators
23 FC-21 Flow Computer ENTER ENTER ENTER ENTER Sub-menus Display Notes Press ENTER to enter Select Flow Equationsubmenus. Press ENTER when desired flow equation isflashing. Press ENTER to begin setup of the Indicators Press ENTER when Total is flashing toconfigure the Totalizer Indicators Enter the ...
Page 28 - Select the desired Rate Time Base.; Rate
24 FC-21 Flow Computer Sub-menus Display Notes 6.4.7SETUPINDICATORS (Temperature) Press ENTER when Rate is flashing toconfigure the Ratemeter Indicators Select the desired Rate Time Base. Enter the desired Descriptor for theRatemeter. Select the desired Rate Decimal Place. 0-3 decimal places allowed...
Page 29 - Press ENTER to begin setup of Flow Input.; Display
25 FC-21 Flow Computer 6.4.8SETUPFLOW INPUT (Pulse - Ain & PS(A=B)) SETUP FLOW INPUT EXCITATION VOLTAGE5v 12v 24v FLOW INPUT TYPE Pulse Analog PULSE INPUT TYPE Ain PS(A=B) Qx1 Qx2 PULSE TRIGGER LEVEL10mV 100mV 2.5V LOW PASS FILTER40Hz 3KHz 20KHz INPUT TERMINATIONPullup Pulldown None MAX WINDOW (...
Page 30 - Pulse; Submenus
26 FC-21 Flow Computer 6.4.9SETUPFLOW INPUT (Pulse - Quadrature,Qx1 or Qx2) SETUP FLOW INPUT EXCITATION VOLTAGE5v 12v 24v FLOW INPUT TYPE Pulse Analog PULSE INPUT TYPEAin PS(A=B) Qx1 Qx2 PULSE TRIGGER LEVEL10mV 100mV 2.5V LOW PASS FILTER40Hz 3KHz 20KHz INPUT TERMINATIONPullup Pulldown None MAX WINDO...
Page 31 - Analog; Select the desired Excitation Voltage.
27 FC-21 Flow Computer Sub-menus Display Notes 6.4.10SETUPFLOW INPUT (Analog) SETUP FLOW INPUTS EXCITATION VOLTAGE5v 12v 24v FLOW INPUT TYPEPulse Analog ANALOG SIGNAL TYPEVoltage Current ANALOG VOLTAGE RANGE0-10V 0-5V 1-5V ANALOG CURRENT RANGE4-20mA 0-20mA LINEARIZATION TYPELinear Sqrt LinTbl LINEAR...
Page 32 - SETUP AUX INPUT
28 FC-21 Flow Computer Sub-menus Display Notes 6.4.11SETUP AUX INPUT NOTE: When Density (Dens)is selected, The menuprompts will be verysimilar to the Tem-perature prompts.The menus willprompt the user fordensity values anddensity units. SETUP AUX INPUT AUX INPUT TYPENone Dens Temp AUX SIGNAL TYPEVol...
Page 33 - SET FLUID PROPERTIES; Enter the Reference Temperature.; SETUP PULSE OUTPUT
29 FC-21 Flow Computer Sub-menus Display Notes 6.4.12SET FLUIDPROPERTIES SET FLUID PROPERTIES REF. DENSITY ###### lbs/g REF. TEMPERATURE ###### F EXPAN. FACTOR [xe-6] ######## CALIBRATION DENSITY ######## VISCOSITY COEF. A 0.000 VISCOSITY COEF. B 0.000 BASE DENSITY H2O@4C ###### lbs/g Advance To SET...
Page 34 - SETUP ANALOG OUTPUT; Select the desired Analog Output Usage.
30 FC-21 Flow Computer SETUP RELAYS Rly1 Rly2 Rly3 Rly4 RELAY 1 USAGERATE TOTAL NA RELAY 1 DELAY sec 0 RELAY 1 MODELO_ALARM HI_ALARM RELAY 1 DURATION ##### RELAY 1 SETPOINT ####### gal RELAY 1 HYSTERESIS ##### gal/m Advance To SETUP RELAYS 3, 4 Sub-menus Display Notes 6.4.14SETUPANALOG OUTPUT ENTER ...
Page 35 - High: Relay activates when reading is above
31 FC-21 Flow Computer ENTER ENTER ENTER ENTER ENTER 6.4.15 (Continued) SETUP RELAYS(Relay 3 & Relay 4) ENTER SETUP RELAYSRly1 Rly2 Rly3 Rly4 RELAY 3 USAGERate Tot Aux Ovrn NA RELAY 4 USAGERate Tot Aux Alrm NA RELAY 3 DELAY sec 0 RELAY 3 MODELO_ALARM HI_ALARM RELAY 3 DURATION ##### RELAY 3 SETPO...
Page 36 - SETUP CONTROL INPUTS
32 FC-21 Flow Computer Sub-menus Display Notes 6.4.16SETUP CONTROLINPUTS (RATE/TOTAL) Press Enter to begin setup of the ControlInputs. Select the desired Control Input for setup. If Control Input 1 Selected,Select Inhibit Total or NA (Not Assigned). If Control Input 2 Selected,Select Reset Total or ...
Page 38 - SERIAL USAGE; Press Enter to begin setup of the Serial Port.
34 FC-21 Flow Computer Sub-menus Display Notes ENTER ENTER ENTER ENTER 6.4.20SERIAL USAGE ENTER ENTER SERIAL USAGE SERIAL HARDWARERS232 RS485 DEVICE ID ## BAUD RATE300 600 1200 <more> BAUD RATE2400 4800 9600 19200 PARITYNone Odd Even HANDSHAKINGNone Softwre Hardwre DEVICE LINE FEED<CR> &...
Page 39 - Select the type of Output Format.
35 FC-21 Flow Computer ENTER ENTER CALL ON ERROR/ALARMNo Yes NUMBER OF REDIALS 0 HANGUP IF 2MIN INACTNo Yes Advance To SETUP DATALOG/PRINT SETUP DATALOG/PRINT SETUP DATALOG/PRINT Config Select_list OUTPUT FORMATPrinter Term Dbase PAGE LENGTH [66 max] 66 TOP MARGIN [60 max] 3 DATALOG PRINT ONLYNo Yes...
Page 40 - Press Enter to begin Administrative Setup.
36 FC-21 Flow Computer Sub-menus Display Notes ADMINISTRATIVE SETUP OPERATOR PASSWORD ***** SUPERVISOR PASSWORD ***** SOFTWARE VERSION vxx.xx PRODUCT ORDER CODE FC-21xxxxxxx UNIT SERIAL NUMBER 00000 SENSOR SERIAL NUMBER 00000 Advance To SETUP NETWORK CARD Press Enter to begin Administrative Setup. E...
Page 41 - SETUP NETWORK CARD; Press Enter to setup Network Card
37 FC-21 Flow Computer 6.4.24SETUPNETWORK CARD(optional) ENTER ENTER ENTER ENTER SETUP NETWORK CARD SELECT NTW PROTOCOLModbusRTU NETWORK DEVICE ID 1 BAUD RATE2400 4800 9600 19200 PARITYNone Odd Even Advance To SELECT EZ SETUP? Press Enter to setup Network Card Select desired Network Protocol. Enter ...
Page 42 - Principle Of Operation; Note concerning Fluid Information
38 FC-21 Flow Computer 7. Principle Of Operation 7.1 General: The FC-21 Flow Computer uses several internal calculations to compute thecompensated flow based on specific data input. Several computations are performedto arrive at the uncompensated flow, temperature, density and viscosity. This inform...
Page 43 - A exp
39 FC-21 Flow Computer 7.3 Flow Equations: (Continued) Flow Equations Input Viscosity Computation: Uncompensated Flow Computation: Pulse Input; Average K-Factor input frequency * time scale factor Volume Flow = K-Factor Pulse Input; Linear Table input frequency * time scale factor Volume Flow = K-Fa...
Page 44 - Flow Equations
40 FC-21 Flow Computer 7.3 Flow Equations: (Continued) Flow Equations The above information was obtained from "Flow Measurement Engineering Handbook, 3rdEdition" by Richard W Miller.
Page 45 - Calculating the Expansion Factor; F, this temperature may also be used
41 FC-21 Flow Computer 7.4 Calculating the Expansion Factor The liquid density is a function of the flowing temperature for many fluids. This unitsolves an equation which represents this physical property of the fluid.The information which the unit uses to describe the fluid is entered by the user i...
Page 46 - Computation of Viscosity Coef. A and B; For a liquid, A and B are computed as follows:
42 FC-21 Flow Computer 7.5 Computation of Viscosity Coef. A and B The flow computer solves an equation which computes the viscosity as afunction of temperature. Two parameters must be entered for thiscalculation to be performed. These are the setup parameters ViscosityCoef. A and Viscosity Coef. B. ...
Page 47 - Actual Flow; KN; Input
43 FC-21 Flow Computer 7.6 Linearization Table 7.6.1 Linearization Table General Information The Linearization Table is used when the flow input device gives a nonlinearinput signal. The unit uses up to 16 different points, as entered by theoperator, to form a curve for linearizing the input signal....
Page 48 - Test
44 FC-21 Flow Computer SELECT OPERATE STATERun Setup Test Audit Trail Error history Print System Setup Keypad Test Display test Calibrate Analog In Test Pulse input test Analog out test Excitation out test Pulse out test Relay Test Control inputs test Battery Voltage Test Data logger utility 8.1 Tes...
Page 50 - Keypad test; Press Enter to enter keypad test
46 FC-21 Flow Computer Sub-menus Display Notes 8.2.4Keypad testSubmenu Group 8.2.5Display testSubmenu Group MENU ENTER Keypad test Keypad testKey pressed—> ENTER Keypad test Display test 0000000000000000000000000000000000000000 Display test MENU ENTER Press Enter to enter keypad test Press the va...
Page 51 - Calibrate; This message is displayed during calibration.
47 FC-21 Flow Computer Sub-menus Display Notes Calibrate Calibrate ch1 0mAIin=TB1-3 GND=TB1-4 Calibrate ch1 0mACALIBRATING —— Calibrate ch1 0mA *** DONE *** Calibrate ch1 0mAIin=TB1-3 GND=TB1-4 Calibrate ch1 20mAIin=TB1-3 GND=TB1-4 Calibrate ch1 20mA 0 CALIBRATING —— Calibrate ch1 20mA *** DONE *** ...
Page 53 - Advance to
49 FC-21 Flow Computer Sub-menus Display Notes Calibrate ch1 0VVin=TB1-2 GND=TB1-4 Calibrate ch1 0V 0 CALIBRATING —— Calibrate ch1 0V *** DONE *** Calibrate ch1 0VIin=TB1-2 GND=TB1-4 Calibrate ch1 10VIin=TB1-2 GND=TB1-4 Calibrate ch1 10V 0 CALIBRATING —— Calibrate ch1 10V *** DONE *** Calibrate ch1 ...
Page 55 - Press enter to test the analog inputs.
51 FC-21 Flow Computer MENU Sub-menus Display Notes 8.2.15Calibrate 4mA OutSubmenu Group 8.2.16Calibrate 20mA OutSubmenu Group ENTER ENTER ENTER ENTER STOP ENTER STOP STOP MENU Calibrate 0mA out+ TB1-15 - TB1-16 Calibrate 0mA outEnter mA: 0.00000 Calibrate 0mA out+ TB1-15 - TB1-16 Calibrate 20mA out...
Page 56 - Press Enter key to test the pulse input.
52 FC-21 Flow Computer Sub-menus Display Notes Pulse input test Pulse input testTrigger level 2.5V Pulse input testcount speed 3kHz Pulse input testF1: 0 F2: 0 Pulse input test Analog out test Analog out test*0 4 10 15 20 mA Analog out test Excitation out test Excitation out test*5v 12v 24v Excitati...
Page 57 - Press Enter key to test the pulse output.
53 FC-21 Flow Computer Sub-menus Display Notes Pulse out test Pulse out test*0Hz 1Hz 10Hz 20Hz Pulse out test Relay Test Rly1 Rly2 Rly3 Rly4 Off Off Off Off Relay Test Control inputs test TB1-9 TB1-10 TB1-11 Off Off Off Control inputs test 8.2.21Pulse out testSubmenu Group ENTER MENU Press Enter key...
Page 58 - Press Enter key to view the battery voltage.
54 FC-21 Flow Computer Battery Voltage Test Battery Voltage Test3.312 Volts Battery Voltage Test Data logger utility Data logger utilityLog 10 958 Max Data logger utilityLog 00001 PRT CLR Data logger utility 8.2.24Battery VoltagetestSubmenu Group 8.2.25Data logger utilitySubmenu Group Press Enter ke...
Page 59 - Internal Fuse Replacement; replacement must follow proper grounding procedures.
55 FC-21 Flow Computer 8.3 Internal Fuse Replacement Instructions: 1. Make sure you follow proper E.S.D. Precautions. All persons performing this replacement must follow proper grounding procedures. 2. Turn the power to the unit off.3. Disconnect the two piece connector rear terminal block, leaving ...
Page 61 - Operation of Serial Communication Port with PC; Ground
57 FC-21 Flow Computer 10. RS-485 Serial Port (optional) 10.1 RS-485 Port Description: The FC-21 has a an optional general purpose RS-485 Port which may be used forany one of the following purposes: Accessing Process Parameters Rate, Temperatures, Density, Setpoints, Month, Day, Year, Hour,Minutes, ...
Page 62 - Flow Computer Setup Software
58 FC-21 Flow Computer 11. Flow Computer Setup Software The FC-21 setup program provides for configuring, monitoring and controlling a FC-21 unit. Sample applications are stored in disk files. The setup program calls theseTemplates. You can store the setup from the program’s memory to either the FC-...
Page 65 - Glossary Of Terms
61 FC-21 Flow Computer Acknowledge & Clear Alarms Acknowledge is used to clear alarm relays and remove any visual alarm messages from the display. Inthe run mode, press the ENTER key or activate CONTROL INPUT 3 (if set for ACK ) to momentarily clear alarms and alarm messages. Alarms will reasser...
Page 69 - Diagnosis and Troubleshooting; TYPE OF ERROR; Sensor/Process Alarms
65 FC-21 Flow Computer 13. Diagnosis and Troubleshooting 13.1 Response of FC-21 on Error or Alarm: TYPE OF ERROR DESCRIPTION Sensor/Process Alarms Errors detected due to sensorf a i l u r e o r p r o c e s s a l a r mconditions Self Test Errors Errors detected during self test. System Alarms Errors ...
Page 70 - Diagnosis Flow Chart and Troubleshooting
66 FC-21 Flow Computer 13.2 Diagnosis Flow Chart and Troubleshooting Is there an input power supply voltage across Terminals 23 and 24? No Yes Check the connections according to the circuit diagrams. Check junction box fuses. Is the Display BacklightVisible? No Yes Check/Replace internal fuse. If fu...
Page 73 - SETUP MENUS; SETUP; START HERE; APPENDIX A
69 FC-21 Flow Computer AUX INPUT TYPE VOL T AGE/ CURRENT RANGE AUX. DEF AUL T AUX LOW SCALE DENS EXTRACT METHOD SETUP AUX INPUT AUX SIGNAL TYPE AUX HIGH ALARM AUX FULL SCALE SETUP INDICA T ORS TO T A L DESCRIPT OR VOLUME UNITS TO T A L DECIMAL PLACES DENSITY DESCRIPT OR MASS UNITS DENSITY DECIMAL PL...
Page 74 - RETURN REQUESTS/INQUIRIES; WARRANTY
WARRANTY/ DISCLAIMER OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for aperiod of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping...
Page 75 - OMEGAnet
Servicing North America: USA: One Omega Drive, P.O. Box 4047 ISO 9001 Certified Stamford CT 06907-0047TEL: (203) 359-1660 FAX: (203) 359-7700 e-mail: [email protected] Canada: 976 BergarLaval (Quebec) H7L 5A1TEL: (514) 856-6928 FAX: (514) 856-6886 e-mail: [email protected] For immediate technical or applic...
