Summary of Contents for Omega FC-21
- Page 1 User’ s Guide Shop online at www.omega.com e-mail: info@omega.com FC-21 Flow Computer 99579 08/21/03...
-
Page 2: Data Acquisition
Where Do I Find Everything I Need for Process Measurement and Control? OMEGA…Of Course! Shop online at www.omega.com TEMPERATURE Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies Wire: Thermocouple, RTD & Thermistor Calibrators & Ice Point References Recorders, Controllers & Process Monitors... -
Page 3: Table Of Contents
1. DESCRIPTION 1.1 Unit Description ...1 1.2 Unit Features ...1 1.3 Specifications ...2 2. INSTALLATION 2.1 General Mounting Hints ...6 2.2 Mounting Diagrams ...6 3. APPLICATIONS 3.1 Liquid Volume ...7 3.2 Corrected Liquid Volume ...8 3.3 Liquid Mass ...9 3.4 Batching ...10 4. - Page 4 11.8 Misc. Tab...60 12. GLOSSARY OF TERMS 12 Glossary Of Terms ...61 13. DIAGNOSIS AND TROUBLESHOOTING 13.1 Response of FC-21 on Error or Alarm: ...65 13.2 Diagnosis Flow Chart and Troubleshooting ...66 13.3 Error & Warning Messages: ...67 13.3.1 Sensor/Process Alarms ...67 13.3.2 Self Test Alarms ...68...
-
Page 5: Description
Single key direct access to measurements and display scrolling is supported. The versatility of the FC-21 permits a wide measure of versatility within the instrument package. The various hardware inputs and outputs can be “soft” assigned to meet a variety of common application needs. The user “soft selects”... -
Page 6: Specifications
FC-21 Flow Computer 1.3 Specifications: Specifications: Environmental Indoor Use Altitude up to 2000m Operating Temperature: 0°C to +50°C (-20°C to 55°C optional) Storage Temperature: -40°C to +85 C Maximum Relative Humidity : 80% for temperatures up to 31°C decreasing linearly to 50% RH at 40°C... - Page 7 Step 11: Update Display and Printer Output- The instrument finally runs a task to update the various table entries associated with the front panel display and serial outputs. FC-21 Flow Computer...
- Page 8 This is also a convenience when performing bench top tests without simulators. Maintenance Mode: The Maintenance Mode of the FC-21 is the Test and Calibration Mode for the device. This mode provides a number of specialized utilities required for factory calibration, instrument checkout on start- up, and periodic calibration documentation.
- Page 9 In the modem mode, the FC-21 is assumed to be operating in a remote metering role. The FC-21 will support key items in the Hayes Compatible “AT”...
-
Page 10: Installation
General Mounting Hints The FC-21 Flow Computer should be located in an area with a clean, dry atmosphere which is relatively free of shock and vibration. The unit is installed in a 5.43" (138mm) wide by 2.68" (68mm) high panel cutout. -
Page 11: Applications
PRE 1 START GRAND SCROLL PRE 2 STOP Flowmeter input frequency * time scale factor Volume Flow = Volume Flow = % input * Full Scale Flow FC-21 Flow Computer TEMP PRINT CLEAR MENU TIME HELP DENS ENTER • –... -
Page 12: Corrected Liquid Volume
FC-21 Flow Computer Corrected 3.2 Corrected Liquid Volume Liquid Volume Measurements: A flowmeter measures the actual volume in a liquid line. A temperature sensor is installed to correct for liquid thermal expansion. Calculations: • Corrected Volume is calculated using the flow and temperature inputs as well as the thermal expansion coefficient stored in the flow computer. -
Page 13: Liquid Mass
PRE 2 DENS ENTER • – Orifice Plate Temp./Dens. with DP Transmitter Transmitter As calculated in section 3.1 Mass Flow = volume flow * density FC-21 Flow Computer TOTAL RATE PRE 1 TEMP PRINT CLEAR MENU START TIME HELP STOP... -
Page 14: Batching
FC-21 Flow Computer Batching 3.4 Batching Measurements: A flowmeter measures the actual volume in a liquid line. A temperature sensor can also be installed to correct for liquid thermal expansion (see 3.2 Corrected Volume). Calculations: • For Flowmeters with Pulse Outputs, Volume flow is calculated using the flowmeter frequency output and the user entered K-Factor. -
Page 15: Wiring
Common FLOW SENSOR 100 Ohm DIN RTD 123456 Remote Counter Alarm Relay 1 Alarm Relay 2 115 VAC FC-21 Flow Computer DC OUTPUT PULSE IN 1 Vin + PULSE IN 2 Iin + COMMON --------- Vin + RTD EXCIT +... -
Page 16: Wiring In Hazardous Areas
FC-21 Flow Computer 4.3 Wiring In Hazardous Areas: Examples using MLT787S+ Barrier (MTL4755ac for RTD) Flow Input Flow Input Hazardous Area Temperature Input Temperature Input (4-20mA Transmitter) (4-20mA Transmitter) Hazardous Area Temperature Input (RTD) Temperature Input (RTD) Hazardous Area Safe Area... -
Page 17: Unit Operation
5. UNIT OPERATION 5.1 Front Panel Operation Concept for Run Mode The FC-21 is fully programmable through the front panel. Please review the following usage summary before attempting to use the instrument. HELP How To Use On-line help is provided to assist the operator in using this product. The help is On-Line Help available during RUN and SETUP modes simply by pressing the HELP key. -
Page 18: General Operation
FC-21 Flow Computer 5.2 General Operation General Operation The unit can display: Rate, Total, Grand Total, Temperature, Density, Presets and Time of Day. The Temperature and/or Density can be displayed even if you are using the Volumetric Flow Equation (a Temperature or Density sensor must be installed). -
Page 19: Rs-232 Serial Port Operation In Rate/Total Mode
Man Machine Interface software for IBM compatible PC's. The user reads and writes information from/to the RS-485 using the Modbus RTU commands. The FC-21 then responds to these information and command requests. Process variables and totalizers are read in register pairs in floating point format. -
Page 20: Batcher Operation
FC-21 Flow Computer 5.4 Batcher Operation The Batcher mode is used primarily to control batches. The main difference between the Batch mode and Rate/Total mode is the relay operation. The Batch mode allows the operator to "START" the unit via the front panel or remote input. -
Page 21: Password Protection For Batcher Mode
Corrected Volume Total or Mass Total. The analog output is ideal for "trend" tracking using strip chart recorders or other devices. Applying a voltage level to Control Input 2 will inhibit all Start inputs in either mode. Clear Grand Total Enter Menu Operator = 0 Supervisor = 2000 FC-21 Flow Computer... -
Page 22: Rs-232 Serial Port Operation In Batcher Mode
Man Machine Interface software for IBM compatible PC's. The user reads and writes information from/to the RS-485 using the Modbus RTU commands. The FC-21 then responds to these information and command requests. Process variables and totalizers are read in register pairs in floating point format. -
Page 23: Programming
6. PROGRAMMING 6.1 Front Panel Operation Concept for Program Mode The FC-21 is fully programmable through the front panel. Please review the following usage summary before attempting to use the instrument. Setup Mode: How To Make Mode MODE CHANGES Changes Pressing the MENU key will offer selections of RUN, SETUP, TEST. -
Page 24: Ez Setup
FC-21 Flow Computer 6.2 EZ Setup The EZ Setup routine is a quick and easy way to configure the unit for the most commonly used instrument functions. measuring Volumetric Flow using a high level, DC Pulsing flow sensor. Entering the EZ Setup mode automatically sets many features. This may cause any previously programmed information to be lost or reset. -
Page 25: Setup Menus
Refer to Page 33 for Details. STOP START Refer to Page 34 for Details. STOP START Refer to Pages 35 & 36 for Details. STOP START Refer to Page 36 for Details. STOP START Refer to Page 37 for Details. FC-21 Flow Computer Notes... -
Page 26: Setup Sub-Menus
FC-21 Flow Computer 6.4 Setup Sub-Menus Sub-menus 6.4.1 SELECT EZ SETUP SELECT EZ SETUP Advance To INSTRUMENT TYPE 6.4.2 INSTRUMENT TYPE INSTRUMENT TYPE Rate/Tot INSTRUMENT TYPE Rate/Tot STOP Advance To SELECT FLOW EQUATION INSTRUMENT TYPE Batch INSTRUMENT TYPE Rate/Tot STOP... -
Page 27: Select Flow Equation
Press ENTER when Dens is flashing to configure the Density Indicators. ENTER Enter the desired Density Descriptor. DENS ENTER Enter the desired Mass Units Label for Density. ENTER Select the desired Density Decimal Place. 0-3 decimal places allowed. ENTER (Rate) FC-21 Flow Computer Notes... -
Page 28: Setup Indicators (Rate)
FC-21 Flow Computer Sub-menus 6.4.6 SETUP INDICATORS Total Dens Rate Temp SETUP INDICATORS (Rate) RATE TIME BASE RATE DESCRIPTOR RATE DEC PLACES RATE AVG FILTER QUICK UPDATE % Advance To SETUP INDICATORS (Temperature) 6.4.7 SETUP INDICATORS SETUP Total Dens Rate Temp... -
Page 29: Setup Flow Input (Pulse - Ain & Ps (A=B))
Enter the desired volumetric High Rate Alarm. ####### gal/m This will trigger an alarm message if alarm conditions occur. The relays are not affected. ENTER FC-21 Flow Computer Notes (other than Fre01) to exit the routine and use the values entered up to that point. -
Page 30: Setup Flow Input (Pulse - Quadrature, Qx1 Or Qx2)
FC-21 Flow Computer Submenus 6.4.9 SETUP FLOW INPUT SETUP FLOW INPUT (Pulse - Quadrature, Qx1 or Qx2) EXCITATION VOLTAGE FLOW INPUT TYPE Pulse NOTE: PULSE INPUT TYPE Ain = Single Pulse PS(A=B) Qx1 PS(A=B) = Pulse Security Qx1 = Quadrature... -
Page 31: Setup Flow Input (Analog)
Enter the desired volumetric High Rate Alarm. ####### gal/m This will trigger an alarm message if alarm conditions occur. The relays are not affected. ENTER FC-21 Flow Computer Notes (other than APR01) to exit the routine and use the values entered up to that point. -
Page 32: Setup Aux Input
FC-21 Flow Computer Sub-menus 6.4.11 SETUP AUX INPUT SETUP AUX INPUT AUX INPUT TYPE NOTE: When Density (Dens) None is selected, The menu prompts will be very similar to the Tem- AUX SIGNAL TYPE perature prompts. Voltage Current The menus will... -
Page 33: Set Fluid Properties
Pulse Output. ENTER Select the desired Pulse Output Usage. CVol/Mass ENTER Select the desired Pulse Width for the Pulse 100mS Output. ENTER Enter the desired Pulse Value for the Pulse ####### gal/P Output (Units per Pulse). ENTER FC-21 Flow Computer Notes... -
Page 34: Setup Analog Output
FC-21 Flow Computer Sub-menus 6.4.14 SETUP ANALOG OUTPUT SETUP ANALOG OUTPUT ANALOG OUTPUT USAGE Rate Total Temp Dens ANALOG OUT FLOW TYPE ANALOG OUTPUT RANGE 4-20mA LS ANALOG OUTPUT FS ANALOG OUT 20mA ANALOG OUT DAMPING Advance To SETUP RELAYS 6.4.15... - Page 35 If Total Selected, Enter desired Relay ##### Duration. ENTER Enter the desired Setpoint. ####### gal ENTER If Rate, selected, Enter desired Relay ##### gal/m Hysteresis. ENTER PULSEOUT OVERFLOW SOFTWARE ERROR RESET EXTENDED PFI LOCKUP RTD/ THERM FAILURE FC-21 Flow Computer Notes...
-
Page 36: Setup Control Inputs(Rate/Total)
FC-21 Flow Computer Sub-menus 6.4.16 SETUP CONTROL INPUTS SETUP CONTROL INPUTS (RATE/TOTAL) SETUP CONTROL INPUTS Input1 Input2 Input3 CONTROL INPUT1 USAGE INHIBIT_TOTAL CONTROL INPUT2 USAGE RESET_TOTAL CONTROL INPUT3 USAGE Advance To SETUP REALTIME CLOCK 6.4.17 SETUP CONTROL INPUTS SETUP CONTROL... - Page 37 ENTER ENTER ENTER ENTER ENTER ENTER ENTER FC-21 Flow Computer...
-
Page 38: Serial Usage
FC-21 Flow Computer Sub-menus 6.4.20 SERIAL USAGE SERIAL USAGE SERIAL HARDWARE RS232 DEVICE ID BAUD RATE 600 1200 <more> BAUD RATE 2400 4800 9600 19200 PARITY None HANDSHAKING None Softwre Hardwre DEVICE LINE FEED <CR> MODEM OPTIONS MODEM INIT MASTER... - Page 39 Enter Print Interval, Enter 00:00:00 to inhibit print interval.. 00:00:00 ENTER Select YES to enable Print Key. Select NO to disable Print Key ENTER Batch mode only. Select Yes to print at end of batch. ENTER FC-21 Flow Computer Notes...
-
Page 40: Set Datalog/Print(Configure)
FC-21 Flow Computer Sub-menus 6.4.22 SET DATALOG/PRINT SETUP DATALOG/PRINT (Select_list) SET DATALOG/PRINT Config PRINT LIST ITEMS TOTAL PRINT LIST ITEMS STOP START RATE List Items: PRINT LIST ITEMS TOTAL PRE 1 RATE PRE1 TEMP GRAND PRINT LIST ITEMS PRE2 DataLog size =001489... -
Page 41: Setup Network Card
SELECT EZ SETUP? Press Enter to setup Network Card ENTER Select desired Network Protocol. ENTER Enter the device address on network (00- 255). ENTER Select the desired Baud Rate. ENTER Select the desired Parity. Even ENTER Advance To FC-21 Flow Computer... -
Page 42: Principle Of Operation
Head class flowmeters are supplied by the manufacturers with a 4-20 mA output span which is already in flow units. The FC-21 permits the user to enter this flowmeter information directly. However, closely associated with this information is the density that was assumed during flowmeter calibration. - Page 43 (Deg F + 459.67) Absolute Density input frequency * time scale factor K-Factor input frequency * time scale factor K-Factor (Hz) input frequency * time scale factor K-Factor (Hz/cstk) √(calibrated density) √(density) √(calibrated density) √(density) reference density FC-21 Flow Computer density...
- Page 44 FC-21 Flow Computer 7.3 Flow Equations: (Continued) Flow Equations The above information was obtained from "Flow Measurement Engineering Handbook, 3rd Edition" by Richard W Miller.
-
Page 45: Calculating The Expansion Factor
Fluid Density vs. Temp. Table Fluid Density vs. Temp. Graph Spec.Grav. = Density of Fluid / Density of Water √ (Spec.Grav.2 / Ref.Spec.Grav.) Temp.2 - Ref.Temp √ (Dens.2 / Ref.Dens.) Temp.2 - Ref.Temp FC-21 Flow Computer x 1,000,000 x 1,000,000... -
Page 46: Computation Of Viscosity Coef. A And B
FC-21 Flow Computer 7.5 Computation of Viscosity Coef. A and B The flow computer solves an equation which computes the viscosity as a Computation of function of temperature. Two parameters must be entered for this Viscosity calculation to be performed. These are the setup parameters Viscosity Coef. -
Page 47: Linearization Table
The unit uses up to 16 different points, as entered by the Actual Flow Apparent Input Flow K factor (correction factor) = KA K factor (correction factor) = KB FC-21 Flow Computer It then uses this data to Y H X Input... -
Page 48: Test, Service And Maintenance
FC-21 Flow Computer 8. Test, Service and Maintenance 8.1 Test Menus Menus 8.1.1 SELECT OPERATE STATE TOP LEVEL TEST MENUS Audit Trail START Error history Print System Setup Keypad Test Display test Analog In Test Pulse input test Analog out test... -
Page 49: Test Sub-Menus
Press enter key to enter print system setup submenu ENTER Press enter to begin printing the system setup. ENTER This message will display as the data transmission takes place. MENU Press Menu to get back to print system setup top-level menu. FC-21 Flow Computer Notes... -
Page 50: Keypad Test
FC-21 Flow Computer Sub-menus 8.2.4 Keypad test Keypad test Submenu Group Keypad test Key pressed—> ENTER Keypad test Display test 8.2.5 Display test Submenu Group 00000000000000000000 00000000000000000000 Display test Display Press Enter to enter keypad test ENTER Press the various keys and the display will show the key that was pressed. -
Page 51: Calibrate Ch1 0Ma
This message is displayed when the 20mA 20mA calibration is finished. The display will automatically return to the Calibrate CH1 20mA submenu. Press the 20mA Down arrow key to advance to the CH2 0mA GND=TB1-4 calibration. STOP FC-21 Flow Computer Notes... -
Page 52: Calibrate Ch2 0Ma
FC-21 Flow Computer Sub-menus 8.2.8 Calibrate ch2 Calibrate CH2 0mA Iin=TB1-8 Submenu Group Calibrate ch2 0 CALIBRATING —— Calibrate ch2 *** DONE *** Calibrate ch2 Iin=TB1-8 Calibrate ch2 8.2.9 Calibrate CH2 20mA Iin=TB1-8 Submenu Group Calibrate ch2 0 CALIBRATING ——... -
Page 53: Calibrate Ch1 0V
This message is displayed when the 10V calibration is finished. The display will automatically return to the Calibrate CH1 10V submenu. Press the Down arrow key to advance to the CH2 0V GND=TB1-4 calibration. STOP Advance to FC-21 Flow Computer Notes... -
Page 54: Calibrate Ch2 0V
FC-21 Flow Computer Sub-menus 8.2.12 Calibrate ch2 0V Calibrate CH2 0V Vin=TB1-5 Submenu Group Calibrate ch2 0V 0 CALIBRATING —— Calibrate ch2 0V *** DONE *** Calibrate ch2 0V Iin=TB1-5 Calibrate ch2 8.2.13 Calibrate CH2 10V Iin=TB1-5 Submenu Group Calibrate ch2 0 CALIBRATING ——... -
Page 55: Calibrate 4Ma Out
OHMS jumper wire between TB1-6 and TB1-7, Place 00.000 a 100 ohm 0.1% resistor between TB1-7 and TB1-8. Display should show 100 ohms ±0.1%. MENU Press Menu key to return to Analog In Test top-level menu. FC-21 Flow Computer Notes... -
Page 56: Pulse Input Test
FC-21 Flow Computer Sub-menus 8.2.18 Pulse input test Pulse input test Submenu Group 2.5V Pulse input test START 10mV Trigger level STOP 100mV 40Hz Pulse input test START 3KHz count speed STOP 20kHz Pulse input test Pulse input test 8.2.19... -
Page 57: Pulse Out Test
DC signal to TB1-9, TB1-10 TB1-10 TB1-11 and/or TB1-11, The Display will show ON when input is active, OFF when inactive. MENU Press Menu key to return to control input test top-level menu. FC-21 Flow Computer Notes... -
Page 58: Battery Voltage Test
FC-21 Flow Computer Sub-menus 8.2.24 Battery Voltage Test Battery Voltage test Submenu Group Battery Voltage Test 3.312 Volts Battery Voltage Test Data logger utility 8.2.25 Data logger utility Submenu Group Data logger utility Log 10 Data logger utility Log 00001... -
Page 59: Internal Fuse Replacement
Fuse Specifications: 110 VAC Power: 160mA/250V, TD Wickman 19372-030-k or equivalent 220 VAC Power: 80mA/250V, TD 12/24 VDC Power: 800mA/250V, TD Wickman 19374-046-k or equivalent fig. 1 Screws (4 places) Wickman 19372-026-k or equivalent fig. 2 FC-21 Flow Computer fuse FUSE... -
Page 60: Rs-232 Serial Port
FC-21 Flow Computer 9. RS-232 Serial Port 9.1 RS-232 Port Description: The FC-21 has a general purpose RS-232 Port which may be used for any one of the following purposes: Transaction Printing Data Logging Remote Metering by Modem (optional) Computer Communication Link... -
Page 61: Rs-485 Serial Port
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 for any one of the following purposes: Accessing Process Parameters Rate, Temperatures, Density, Setpoints, Month, Day, Year, Hour, Minutes, Seconds, etc. -
Page 62: Flow Computer Setup Software
Sample applications are stored in disk files. The setup program calls these Templates . You can store the setup from the program’s memory to either the FC-21 ( Downloading the file) or to a disk file ( Saving the file) for later usage. Similarly you can load the setup in program memory from either a disk file ( Opening a file) or from the FC-21 unit (Up loading a file). -
Page 63: Using The Flow Computer Setup Software
• Save the template to disk (if you want to reuse this template) • Download the template to an attached unit. The Communications with FC-21 Section allows the user to upload a template file from the unit, download the program’s current template to the unit or Compare the program’s current template with the unit. -
Page 64: View Tab
If communication errors occur while reading data from the FC-21 device, the word ‘Error’ will appear in place of the actual value. If the connection to the FC-21 is lost, the viewer will time out with a message saying the device is not responding. -
Page 65: Glossary Of Terms
Alarms will reassert themselves if alarm conditions are still present. Analog Output The analog signal (4-20mA) that is generated by the FC-21. It can correspond to the Rate, Total, Temperature or Density. This output is used primarily for transmission of process information to remote systems. - Page 66 A value set at which any flow measurements read below this value will be ignored. Low Pass Filter A low pass filter passes low input frequencies while blocking high frequencies. In the FC-21, this is the maximum input count speed to be encountered in an application. It is expressed in counts per second (Hz).
- Page 67 Inputs that are terminated by this method need to be pulled low with a sinking current or contact to ground . Pulse Output The pulse output of the FC-21 is available for remote accumulation of the total or sent to peripheral devices, such as a PLC. The output can be scaled using the Pulse Output Scaling Constant. Quad Abbreviation for Quadrature.
- Page 68 (OLD DATA x "Avg. Filter" + NEW DATA) ("Avg. Filter" + 1) Ratemeter Any device used to display the speed of a process. The ratemeter in the FC-21 displays flow rate. Ref. Dens. Abbreviation for Reference Density. This is the fluid density at reference temperature.
-
Page 69: Diagnosis And Troubleshooting
13. Diagnosis and Troubleshooting 13.1 Response of FC-21 on Error or Alarm: Error and warning indications which occur during operation are indicated in the RUN mode alternately with the measured values. The FC-21 Flow Computer has three types of error: TYPE OF ERROR... -
Page 70: Diagnosis Flow Chart And Troubleshooting
FC-21 Flow Computer 13.2 Diagnosis Flow Chart and Troubleshooting All instruments undergo various stages of quality control during pro- duction. The last of these stages is a complete calibration carried out on state-of-the-art calibration rigs. A summary of possible causes is given below to help you identify faults. -
Page 71: Error & Warning Messages
Unit was operated with an input power level lower than safe operating range for an extended period of time. FC-21 Flow Computer Remedy Acknowledge Rollover, Remedy not required • Check wiring • Check function of sensor •... -
Page 72: Self Test Alarms
FC-21 Flow Computer 13.3 Error & Warning Messages: (Continued) 13.3.2 Error/Warning Message Self Test Alarms FLOW INPUT TOO HIGH AUX INPUT TOO HIGH FLOW INPUT TOO LOW BATTERY LOW WARNING A to D NOT CONVERTING TIME CLOCK ERROR CAL CHECKSUM ERROR... -
Page 73: Setup Menus
FC-21 Flow Computer APPENDIX A... - Page 74 Department will issue an Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling, improper interfacing, operation outside of design limits, improper repair, or unauthorized modification.
- Page 75 Toll Free in United Kingdom: 0800-488-488 e-mail: sales@omega.co.uk It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that apply. OMEGA is constantly pursuing certification of its products to the European New Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification.