Omega FC-21 User Manual

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99579 08/21/03

FC-21

Flow Computer

Where Do I Find Everything I Need for

Process Measurement and Control?

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TEMPERATURE

䡺⻬

Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies

䡺⻬

Wire: Thermocouple, RTD & Thermistor

䡺⻬

Calibrators & Ice Point References

䡺⻬

Recorders, Controllers & Process Monitors

䡺⻬

Infrared Pyrometers

PRESSURE, STRAIN AND FORCE

䡺⻬

Transducers & Strain Gages

䡺⻬

Load Cells & Pressure Gages

䡺⻬

Displacement Transducers

䡺⻬

Instrumentation & Accessories

FLOW/LEVEL

䡺⻬

Rotameters, Gas Mass Flowmeters & Flow Computers

䡺⻬

Air Velocity Indicators

䡺⻬

Turbine/Paddlewheel Systems

䡺⻬

Totalizers & Batch Controllers

pH/CONDUCTIVITY

䡺⻬

pH Electrodes, Testers & Accessories

䡺⻬

Benchtop/Laboratory Meters

䡺⻬

Controllers, Calibrators, Simulators & Pumps

䡺⻬

Industrial pH & Conductivity Equipment

DATA ACQUISITION

䡺⻬

Data Acquisition & Engineering Software

䡺⻬

Communications-Based Acquisition Systems

䡺⻬

Plug-in Cards for Apple, IBM & Compatibles

䡺⻬

Datalogging Systems

䡺⻬

Recorders, Printers & Plotters

HEATERS

䡺⻬

Heating Cable

䡺⻬

Cartridge & Strip Heaters

䡺⻬

Immersion & Band Heaters

䡺⻬

Flexible Heaters

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Laboratory Heaters

ENVIRONMENTAL MONITORING AND CONTROL

䡺⻬

Metering & Control Instrumentation

䡺⻬

Refractometers

䡺⻬

Pumps & Tubing

䡺⻬

Air, Soil & Water Monitors

䡺⻬

Industrial Water & Wastewater Treatment

䡺⻬

pH, Conductivity & Dissolved Oxygen Instruments

M2571/0803

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. WIRING

4.1 Typical Batcher Wiring................................................................................... 11

4.2 Typical Rate/Total Wiring ............................................................................... 11

4.3 Wiring In Hazardous Areas............................................................................ 12

5. UNIT OPERATION

5.1 Front Panel Operation Concept for Run Mode ..............................................13

5.2 General Operation .........................................................................................14

5.3 Ratemeter/Totalizer Operation ......................................................................14

5.3.1 Password Protection for Rate/Total mode ...................................... 14

5.3.2 Relay Operation in Rate/Total mode ...............................................14

5.3.3 Pulse Output in Rate/Total mode ....................................................14

5.3.4 Analog Output in Rate/Total mode ..................................................14

5.3.5 RS-232 Serial Port Operation in Rate/Total mode .........................15

5.3.6 RS-485 Serial Port Operation in Rate/Total mode .........................15

5.4 Batcher Operation .........................................................................................16

5.4.1 Batcher Configuration .....................................................................16

5.4.2 Password Protection for Batcher mode ..........................................17

5.4.3 Relay Operation in Batcher mode .................................................. 17

5.4.4 Pulse Output in Batcher mode....................................................... 17

5.4.5 Analog Output in Batcher mode...................................................... 17

5.4.6 RS-232 Serial Port Operation in Batcher mode............................. 18

5.4.7 RS-485 Serial Port Operation in Batcher mode............................. 18

6. PROGRAMMING

6.1 Front Panel Operation Concept for Program Mode....................................... 19

6.2 EZ Setup ....................................................................................................... 20

6.3 Setup Menus .................................................................................................21

6.4 Setup Sub-Menus..........................................................................................22

6.4.1 SELECT EZ SETUP .......................................................................22

6.4.2 INSTRUMENT TYPE ...................................................................... 22

6.4.3 SELECT FLOW EQUATION ........................................................... 23

6.4.4 SETUP INDICATORS (Total) ..........................................................23

6.4.5 SETUP INDICATORS (Density) ..................................................... 23

6.4.6 SETUP INDICATORS (Rate) .......................................................... 24

6.4.7 SETUP INDICATORS (Temperature) ............................................. 24

6.4.8 SETUP FLOW INPUT (Pulse - Ain & PS (A=B)) ............................ 25

6.4.9 SETUP FLOW INPUT (Pulse - Quadrature, Qx1 or Qx2) .............. 26

6.4.10 SETUP FLOW INPUT (Analog) ....................................................27

6.4.11 SETUP AUX INPUT ......................................................................28

6.4.12 SET FLUID PROPERTIES ...........................................................29

6.4.13 SETUP PULSE OUTPUT .............................................................29

6.4.14 SETUP ANALOG OUTPUT ..........................................................30

6.4.15 SETUP RELAYS ........................................................................... 30

6.4.16 SETUP CONTROL INPUTS(RATE/TOTAL) ................................ 32

6.4.17 SETUP CONTROL INPUTS(BATCH) ...........................................32

6.4.18 SETUP REALTIME CLOCK(Time) ...............................................33

6.4.19 SETUP REALTIME CLOCK(Date)................................................33

6.4.20 SERIAL USAGE ........................................................................... 34

6.4.21 SET DATALOG/PRINT(Configure) ...............................................35

6.4.22 SET DATALOG/PRINT (Select_list) ............................................. 36

6.4.23 ADMINISTRATIVE SETUP ...........................................................36

6.4.24 SETUP NETWORK CARD ...........................................................37

CONTENTS

99579 08/21/03

CONTENTS

7. PRINCIPLE OF OPERATION

7.1 General..........................................................................................................38

7.2 Orifice Flowmeter Considerations .................................................................38

7.3 Flow Equations ..............................................................................................38

7.4 Calculating the Expansion Factor.................................................................. 41

7.5 Computation of Viscosity Coef. A and B ........................................................42

7.6 Linearization Table ........................................................................................43

7.6.1 Linearization Table General Information .........................................43

7.6.2 Linearization Table for Pulse Inputs ................................................43

7.6.3 Linearization Table for Analog Inputs .............................................. 43

7.6.4 Linearization Table Interpolation .....................................................43

8. TEST, SERVICE and MAINTENANCE

8.1 Test Menus ....................................................................................................44

8.2 Test Sub-Menus ............................................................................................ 45

8.2.1 Audit Trail ........................................................................................45

8.2.2 Error History ................................................................................... 45

8.2.3 Print System Setup .........................................................................45

8.2.4 Keypad test..................................................................................... 46

8.2.5 Display test .....................................................................................46

8.2.6 Calibrate CH1 0mA......................................................................... 47

8.2.7 Calibrate CH1 20mA ....................................................................... 47

8.2.8 Calibrate CH2 0mA......................................................................... 48

8.2.9 Calibrate CH2 20mA ....................................................................... 48

8.2.10 Calibrate CH1 0V.......................................................................... 49

8.2.11 Calibrate CH1 10V........................................................................ 49

8.2.12 Calibrate CH2 0V.......................................................................... 50

8.2.13 Calibrate CH2 10V ........................................................................ 50

8.2.14 Calibrate 100 ohm RTD ................................................................50

8.2.15 Calibrate 4mA Out ........................................................................51

8.2.16 Calibrate 20mA Out ......................................................................51

8.2.17 Analog In Test ...............................................................................51

8.2.18 Pulse input test .............................................................................52

8.2.19 Analog out test.............................................................................. 52

8.2.20 Excitation out test .........................................................................52

8.2.21 Pulse out test ................................................................................53

8.2.22 Relay test..................................................................................... 53

8.2.23 Control input test .......................................................................... 53

8.2.24 Battery Voltage test ......................................................................54

8.2.25 Data logger utility ..........................................................................54

8.3 Internal Fuse Replacement ...........................................................................55

9. RS-232 SERIAL PORT

9.1 RS-232 Serial Port Description ..................................................................... 56

9.2 Instrument Setup by PC Over Serial Port...................................................... 56

9.3 Operation of Serial Communication Port with Printers ..................................56

9.4 FC-21 RS-232 Port Pinout ............................................................................ 56

10. RS-485 SERIAL PORT

10.1 RS-485 Serial Port Description ................................................................... 57

10.2 General........................................................................................................57

10.3 Operation of Serial Communication Port with PC ....................................... 57

10.4 FC-21 RS-485 Port Pinout .......................................................................... 57

11. FLOW COMPUTER SETUP SOFTWARE

11.1 System Requirements .................................................................................58

11.2 Cable and Wiring Requirements.................................................................. 58

11.3 Installation for Windows™3.1 or 3.11 ..........................................................58

11.4 Using the Flow Computer Setup Software ..................................................59

11.5 File Tab ........................................................................................................ 59

11.6 Setup Tab .....................................................................................................59

11.7 View Tab ...................................................................................................... 60

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

APPENDIX A

Setup Menus .......................................................................................................69

FC-21 Flow Computer

Unit Description 1. Description

1.1 Unit Description:

The FC-21 Flow Computer satisfies the instrument requirements for a variety of flowmeter types in liquid applications. Multiple flow equations and instrument functions are available in a single unit with many advanced features.

The alphanumeric display shows measured and calculated parameters in easy to understand format. 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” the usage of each input/output while configuring the instrument. Consider the following illustrative examples.

The isolated analog output can be chosen to follow volume flow, corrected volume flow, mass flow, temperature, or density by means of a menu selection. Most hardware features are assignable by this method.

The user can assign the standard RS-232 Serial Port for data logging, transaction printing, or for connection to a modem for remote meter reading.

1.2 Unit Features:

The FC-21 Flow Computer offers the following features:

• Custody Transfer with Audit Trail

• Multiple Instrument Functions

• Menu Selectable Hardware & Software Features

• Two Line LCD or VFD Display

• Foreign Language Options

• Isolated Outputs Standard

• Versatile RS-232 Port Standard

• DIN Enclosure with Two Piece Connector

• Optional Networking Cards

• Advanced Batching Features

Unit Features

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 Mains supply voltage fluctuations not to exceed ±10%

of the nominal voltage Transient overvoltage according to INSTALLATION

CATEGORY II (see UL 3101-1 Annex J) POLLUTION DEGREE 2 in accordance with

IEC 664 (see 3.7.3) Materials: UL, CSA, VDE approved

Approvals: CE Approved Light Industrial,

UL File #: E192404 CSA Pending

Display

Type: 2 lines of 20 characters Types: Backlit LCD or VFD ordering options Character Size: 0.3" nominal User selectable label descriptors and units of measure

Keypad

Keypad Type: Membrane Keypad Keypad Rating: Sealed to Nema 4 Number of keys: 16

Enclosure

Size: See Dimensions Depth behind panel: 6.5" including mating connector Type: DIN Materials: Plastic, UL94V-0, Flame retardant Bezel: Textured per matt finish Equipment Labels: Model, safety, and user wiring

Power Input

The factory equipped power option is internally fused. An internal line to line filter capacitor is provided for added transient suppression. Order Option 1: 110VAC: 85 to 127 Vrms, 50/60 Hz Order Option 2: 220VAC: 170 to 276 Vrms, 50/60 Hz Order Option 3: 12VDC: 10.5 to 14 VDC Order Option 4: 24VDC: 18 to 24 VDC

Flow Inputs:

Analog Input:

Ranges

Voltage: 0-10 VDC, 0-5 VDC, 1-5 VDC

Current: 4-20 mA, 0-20 mA

Basic Measurement Resolution: 16 bit Update Rate: 5 updates/sec minimum Automatic Fault detection: Signal over/under-range,

Current Loop Broken

Calibration: Self Calibration and Auto-zero

Continuously

Extended calibration: Learns Zero and Full Scale

of each range using special test mode.

Fault Protection:

Fast Transient: 500 V Protection

(Capacitive Clamp) Reverse Polarity: No ill effects Over-Voltage Limit: 50 VDC Over voltage

protection

Over-Current Protection: Internally current

limited Protected to 24 VDC.

Pulse Inputs:

Number of Flow Inputs: one Configurations supported: single input with or

without quadrature (menu selectable)

Input Impedance: 10 KΩ nominal Pullup Resistance: 10 KΩ to 5 VDC (menu

selectable)

Pull Down Resistance: 10 KΩ to common Trigger Level: (menu selectable)

High Level Input Logic On: 3 to 30 VDC Logic Off: 0 to 1 VDC Low Level Input (mag pickup)

Selectable sensitivity: 10 mV & 100 mV Minimum Count Speed: User selectable Maximum Count Speed: Selectable: 0 to 20kHz Overvoltage Protection: 50 VDC Fast Transient: Protected to 500 VDC

(Capacitive Clamp)

Compensation Input

The compensation input is menu selectable for temperature, density or not used.

Operation: Ratiometric Accuracy: 0.01% FS Thermal Drift: Less than 100 ppm/C Basic Measurement Resolution: 16 bit Update Rate: 1 update/sec minimum Automatic Fault detection:

Signal Over-range/under-range Current Loop Broken RTD short RTD open Fault mode to user defined default settings

Transient Protection: 500 V (Capacitive Clamp) Reverse Polarity: No ill effects Over-Voltage Limit (Voltage Input): 50 VDC

Available Input Ranges

Voltage: 0-10 VDC, 0-5 VDC, 1-5 VDC Current: 4-20 mA, 0-20 mA Resistance: 100 Ohms DIN RTD

100 Ohm DIN RTD (DIN 42-760, BS 1904):

Three Wire Lead Compensation Internal RTD linearization learns ice point

resistance

1 mA Excitation current with reverse polarity

protection

Temperature Resolution: 0.01 C

Control Inputs

Switch Inputs are menu selectable for Start, Stop, Reset, Lock, Inhibit, Alarm Acknowledge, Print or Not Used. Control Input Specifications

Input Scan Rate: 10 scans per second Logic 1: 4 - 30 VDC Logic 0: 0 - 0.8 VDC Transient Suppression: 500 V fast transient

(Capacitive Clamp)

Input Impedance: 100 KΩ Control Activation: Positive Edge or Pos. Level based on product definition

Excitation Voltage

110/220 VAC Powered Units

Menu Selectable: 5, 12 or 24 VDC @ 100mA

24 VDC Powered Units

Menu Selectable: 5 or 12 VDC @ 100mA

12 VDC Powered Units

5 VDC @ 100mA

FC-21 Flow Computer

Relay Outputs

The relay outputs are menu assignable to (Individually for each relay) Low Rate Alarm, Hi Rate Alarm, Prewarn Alarm, Preset Alarm, Pulse Output (pulse options) or General purpose warning (security).

Number of relays: 2 (4 optional) Contact Style: Form C contacts Contact Ratings: 250 VAC @ 5 amps

30 VDC @ 5 amps

Fast Transient Threshold: 1000 V

Serial Communication

The serial port can be used for printing, datalogging, modem connection and communication with a computer. RS-232:

Device ID: 01-99 Baud Rates: 300, 600, 1200, 2400, 4800, 9600,

19200 Parity: None, Odd, Even Handshaking: None, Software, Hardware Print Setup: Configurable print list and formatting

RS-485:

Device ID: 01-247 Baud Rates: 300, 600, 1200, 2400, 4800, 9600,

19200 Parity: None, Odd, Even Protocol: Modbus RTU (Half Duplex)

Analog Output

The analog output is menu assignable to correspond to the Uncompensated Volume Rate, Corrected Volume Rate, Mass Rate, Temperature, Density, Volume Total, Corrected Volume Total or Mass Total. Type: Isolated Current Sourcing Isolated I/P/C: 500 V Available Ranges: 4-20 mA, 0-20 mA Resolution: 12 bit Accuracy: 0.05% FS at 20 Degrees C Update Rate: 1 update/sec minimum Temperature Drift: Less than 200 ppm/C Maximum Load: 1000 ohms (at nominal line voltage) Compliance Effect: Less than .05% Span 60 Hz rejection: 40 dB minimum EMI: No effect at 3 V/M Calibration: Operator assisted Learn Mode Averaging: User entry of DSP Averaging constant to cause an smooth control action.

Isolated Pulse output

The isolated pulse output is menu assignable to Uncompensated Volume Total, Compensated Volume Total or Mass Total. Isolation I/O/P: 500 V Pulse Output Form: Open Collector Maximum On Current: 125 mA Maximum Off Voltage: 30 VDC Saturation Voltage: 1.0 VDC Maximum Off Current: 0.1 mA Pulse Duration: User selectable Pulse output buffer: 8 bit Pulse Rate Averaging: Standard Fault Protection

Reverse polarity: Shunt Diode Transient Protection: 500 VDC

(Capacitive Clamp)

Operating Mode

The Flow Computer can be thought of as making a series of measurements of flow, temperature/ density sensors and then performing calculations to arrive at a result(s) which is then updated periodically on the display. The analog output, the pulse output, and the alarm relays are also updated. The cycle then repeats itself.

Step 1:Update the measurements of input signals-

Raw Input Measurements are made at each input using equations based on input signal type selected. The system notes the “out of range” input signal as an alarm condition.

Step 2:Compute the Flowing Fluid Parameters-

The temperature, viscosity, and density equations are computed as needed based on the flow equation and input usage selected by the user.

Step 3 : Compute the Volumetric Flow-

Uncompensated flow is the term given to the flow in volume units. The value is computed based on the flowmeter input type selected and augmented by any performance enhancing linearization that has been specified by the user.

Step 4: Compute the Corrected Volume Flow at

Reference ConditionsIn the case of a corrected liquid volume flow calculation, the corrected volume flow is computed as required by the selected compensation equation.

Step 5 : Compute the Mass Flow-

All required information is now available to compute the mass flow rate as volume flow times density.

Step 6: Check Flow Alarms-

The flow alarm functions have been assigned to one of the above flow rates during the setup of the instrument. A comparison is now made by comparing the current flow rates against the specified hi and low limits.

Step 7: Compute the Analog Output-

This designated flow rate value is now used to compute the analog output.

Step 8: Compute the Flow Totals by Summation-

A flow total increment is computed for each flow rate. This increment is computed by multiplying the respective flow rate by a time base scaler and then summing. The totalizer format also includes provisions for total rollover.

Step 9: Total Preset Comparisons-

The total associated with a preset function is then compared against the corresponding preset value and any required control actions taken.

Step 10: Pulse Output Service-

The pulse output is next updated by scaling the total increment which has just been determined by the pulse output scaler and summing it to any residual pulse output amount.

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

Setup Mode

The setup mode is password protected by means of a numeric lock out code established by the user. In addition, a secret, manufacturers numeric unlock entry sequence is available.

The system also provides a minimum implementation of an “audit trail” which tracks significant setup changes to the unit. This feature is increasingly being found of benefit to users or simply required by Weights and Measurement Officials in systems used in commerce, trade, or “custody transfer” applications.

A Worksheet is provided to assist the user in setting up the instrument. In addition, a software program is available which runs on a PC using a RS-232 Serial for connection to the Flow Computer. Illustrative examples may be down loaded in this manner.

The setup mode has numerous subgrouping of parameters needed for flow calculations. There is a well conceived hierarchy to the setup parameter list. Selections made at the beginning of the setup affect offerings further down in the lists.

In the setup mode, the flow computer activates the correct setup variables based on the instrument configuration, the flow equation, and the hardware selections made for the compensation transmitter type, the flow transmitter type, and meter enhancements (linearization) options selected. All required setup parameters are enabled. All setup parameters not required are suppressed.

A help line prompt is provided for each entry. In addition a help message is available which may be accessed by depressing the “HELP” key.

In the setup mode selections, several parameters are required to be input by the operator since these parameters are blank when the unit is received. The user will be prompted for these necessary values for his application. A blank parameter will prevent the user from entering the run mode and a suitable warning message will be issued.

Also note that in the setup mode are parameter selections which have preassigned industry standard values. The unit will assume these values unless they are modified by the user.

Most of the process input variables have available a “default” or emergency value which must be entered. These are the values that the unit assumes when a malfunction is determined to have occurred on the corresponding input.

It is possible to enter in a nominal constant value for temperature or density, or analog flow inputs by placing the desired nominal value into both the lo and hi values. 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 startup, and periodic calibration documentation.

A password is required to gain access to this specialized mode of operation. Normally quality, calibration, and maintenance personnel will find this mode of operation very useful. It is also useful for factory testing.

Many of these tests may be used during start-up of a new system. Inputs signals may be read, and output signals may be exercised to verify the electrical interconnects before the entire system is put on line.

The following action items may be performed in the Maintenance Mode:

Print Calibration/Maintenance Report Examine Audit Trail Perform Keypad Checkout Perform Display Checkout Perform Pulse Input Checkout Perform Pulse Output Checkout Perform Control Input Checkout Perform Relay Output Checkout Perform Analog Input Checkout Perform Analog Output Checkout Calibrate Analog Inputs using the Learn Feature Calibrate Analog Output using the Learn Feature Battery Check

Note that a calibration of the analog input/output will advance the audit trail counters since it effects the accuracy of the system.

RS-232 Serial Port

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 Internal Datalog Dumps Remote Metering by Modem (optional) Computer Communication Link Configuration by Computer Print System Setup Print Calibration/Malfunction History Remote Control

Instrument Setup by PC’s over Serial Port

A Diskette program is provided with the FC-21 that enables the user to rapidly configure the FC21 using an Personnel Computer. Included on the diskette are common instrument applications which may be used as a starting point for your application. This permits the user to have an excellent starting point and helps speed the user through the instrument setup.

FC-21 Flow Computer

Operation of Serial Communication Port with Printers

FC-21’s RS-232 channel supports a number of operating modes. One of these modes is intended to support operation with a printer in metering applications requiring transaction printing, data logging and/or printing of calibration and maintenance reports.

For transaction printing, the user defines the items to be included in the printed document. The user can also select what initiates the transaction print generated as part of the setup of the instrument. The transaction document may be initiated via a front panel key depression, a remote contact closure, or upon completion of a batch.

In data logging, the user defines the items to be included in each data log as a print list. The user can also select when or how often he wishes a data log to be made. This is done during the setup of the instrument as either a time of day or as a time interval between logging.

The system setup and maintenance report lists all the instrument setup parameters and usage for the current instrument configuration. In addition, the Audit trail information is presented along with a status report listing any observed malfunctions which have not been corrected.

The user initiates the printing of this report at a designated point in the menu by pressing the print key on the front panel.

Operation of Serial Port with Modems (optional)

The FC-21 RS-232 channel supports a number of operating modes. One of these modes is intended to support operation with a modem in remote metering applications. FC-21’s role is that of DTE effecting file transfers under common file transfer protocols.

An external modem is intentionally being used with the FC-21. This permits use with the variety of modem standards worldwide while avoiding the specialized approvals required for equipment that is deemed to fall under the category of telecommunication equipment.

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” Command Set. In this role, the FC-21 will have the following special abilities:

0. Monitor the modem status as a task of the system

1. Instruct the modem to answer an incoming call ATA

2. Respond to the calling modem at a compatible baud rate and protocol

3. Perform error checking in conjunction with the modem

4. Monitor the status of the carrier

5. Terminate the telephone connection in event the connection is lost.

In addition, the FC-21 will be capable of initiating a call to a designed telephone number in the event of a metering malfunction.

FC-21 Flow Computer

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, 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. (see Mounting Dimensions) To mount the Flow Computer, proceed as follows:

a. Prepare the panel opening. b. Slide the unit through the panel cutout until the it touches the panel. c. Install the screws (provided) in the mounting bracket and slip the

bracket over the rear of the case until it snaps in place.

d. Tighten the screws firmly to attach the bezel to the panel. 3 in. lb. of

torque must be applied and the bezel must be parallel to the panel.

Termination Connectors:

Minimum Wire Gauge: 22 AWG Maximum Wire Gauge: 14 AWG Voltage/current limits are limited by unit specifications.

Permanently Connected Equipment: UL 3101-1, Section 6.12.2.1 specifies that:

•A switch or circuit breaker shall be included in the building installation;

• It shall be in close proximity to the equipment and within easy reach of the OPERATOR;

• It shall be marked as the disconnecting device for the equipment.

Ensure that the switch or circuit breaker chosen is suitable for the power requirements of the unit.

2.2 Mounting Diagrams:

General Mounting Hints

Mounting Procedure

Mounting Bracket

Standard Mounting Bezel Kit Mounting

Dimensions

Dotted Line Shows Optional Bezel Kit

Panel

Cutout

5.43

(138)

2.68 (68)

Dimensions are in inches (mm)

5.67 (144)

2.83 (72)

3.43 (87)

6.18

STOP

START

–

TIME

CLEAR•MENU

ENTER

HELP

TEMP4PRE 13RATE2TOTAL

GRAND6SCROLL7PRE 28DENS

RATE TOTAL

267395.749

GPM GAL

147.43

6.15

(156)

0.5

(13)

0.28 (7.2)

0.4 (10)

FC-21 Flow Computer

3. Applications

3.1 Liquid Volume

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.

• For Flowmeters with Analog Transmitters, Volume flow is calculated using the measured flowmeter signal and the user entered scale settings.

Output Results:

• Display Results

Flow Rate, Resettable Total, Non-Resettable Total

• Analog Output

Rate or Total

• Pulse Output

Total

• Relay Outputs

Rate or Total Alarms

Applications:

The Flow Computer can monitor actual volume flow and total of any liquid. Flow alarms are provided via relays and datalogging is available via analog (4-20mA) and serial outputs.

Liquid Volume

Pulse Input; Average K-Factor

input frequency * time scale factor

Volume Flow =

K-Factor

Analog Input; Linear

Volume Flow = % input * Full Scale Flow

Liquid Volume Illustration

Calculations

STOP

START

–

TIME

CLEAR•MENU

ENTER

HELP

TEMP

PRE 1

RATE

TOTAL

GRAND6SCROLL7PRE 28DENS

Flowmeter

FC-21 Flow Computer

3.2 Corrected 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. Use the "SET FLUID PROPERTIES" submenu to define reference temperature and density values for standard conditions.

Output Results:

• Display Results

Flow Rate, Resettable Total, Non-Resettable Total, Temperature, Density

• Analog Output

Rate, Total, Temperature or Density

• Pulse Output

Total

• Relay Outputs

Rate , Total or Temperature Alarms

Applications:

Monitoring corrected volume flow and total of any liquid. Flow alarms are provided via relays and datalogging is available via analog (4-20mA) and serial outputs.

Corrected Liquid Volume

Volume Flow

As calculated in section 3.1

Corrected Volume Flow

(Temp. Transmitter)

Corrected Volume Flow = vol. flow * (1 - Therm.Exp.Coef. *(Tf-Tref))

Calculations

Corrected Liquid Volume Illustration

STOP

START

–

TIME

CLEAR•MENU

ENTER

HELP

TEMP

PRE 1

RATE

TOTAL

GRAND6SCROLL7PRE 28DENS

Flowmeter Temperature Transmitter

FC-21 Flow Computer

3.3 Liquid Mass

Measurements:

Actual volume is measured by the flow element (DP transmitter, Flowmeter). Temperature is measured by the temperature transmitter. A density transmitter can be used for direct density measurements.

Calculations:

• The density and mass flow are calculated using the reference density and the thermal expansion coefficient of the liquid (see "SET FLUID PROPERTIES" submenu)

Output Results:

• Display Results

Flow Rate, Resettable Total, Non-Resettable Total, Temperature, Density

• Analog Output

Rate, Total, Temperature or Density

• Pulse Output

Total

• Relay Outputs

Rate, Total or Temperature Alarms

Applications:

Monitoring mass flow and total of any liquid. Flow alarms are provided via relays and datalogging is available via analog (4-20mA) and serial outputs.

Liquid Mass

Liquid Mass Illustration

Volume Flow

As calculated in section 3.1

Mass Flow

Mass Flow = volume flow * density

Calculations

STOP

START

–

TIME

CLEAR•MENU

ENTER

HELP

TEMP

PRE 1

RATE

TOTAL

GRAND6SCROLL7PRE 28DENS

Orifice Plate

with DP Transmitter

Temp./Dens.

Transmitter

STOP

START

–

TIME

CLEAR•MENU

ENTER

HELP

TEMP

PRE 1

RATE

TOTAL

GRAND6SCROLL7PRE 28DENS

Flowmeter Temp./Dens.

Transmitter

FC-21 Flow Computer

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.

• For Flowmeters with Analog Transmitters, Volume flow is calculated using the measured flowmeter signal and the user entered scale settings.

• Corrected Volume is calculated using the flow and temperature inputs as well as the thermal expansion coefficient stored in the flow computer.

Output Results:

• Display Results

Flow Rate, Batch Total, Non-Resettable Total, Temperature, Density

• Analog Output

Rate, Total, Temperature or Density

• Pulse Output

Total

• Relay Outputs

Batch Total, Rate, or Temperature Alarms

Applications:

Batching and monitoring flow and total of any liquid. Batching is accomplished via relays and datalogging is available via analog (420mA) and serial outputs.

Batching

Batching Illustration

Calculations

Volume Flow

As calculated in section 3.1

Corrected Volume Flow

(Temp. Transmitter)

Corrected Vol. Flow = volume flow * (1 - Therm.Exp.Coef. *(Tf-Tref))

STOP

START

–

TIME

CLEAR•MENU

ENTER

HELP

TEMP

PRE 1

RATE

TOTAL

GRAND6SCROLL7PRE 28DENS

Flowmeter Temperature Transmitter

(Optional)

Solenoid Valve

FC-21 Flow Computer

4 WIRING

4.1 Typical Batcher Wiring:

13 PULSE OUTPUT +

PULSE OUTPUT -

ANALOG OUTPUT -

ANALOG OUTPUT +

RLY1

RLY2

AC LINE AC LINE24

18 COM 19 20 21 22

NO NC COM NO

14 15 16

17 NC

POWER IN

DC -

4-20 mA

COM RLY3

COM RLY4

26 27 28 29 30

NO NC

DC +

25 NC

PULSE IN 1 PULSE IN 2

DC OUTPUT

COMMON

RTD EXCIT + RTD SENS

RTD SENS -

CNTR IN 1 CNTR IN 2 CNTR IN 3 COMMON

---------

8 9 10 11 12

2 3 4 5 6 7

SEE USER MANUAL

COMP

Iin +

Vin + Iin +

Vin +

FLOW

FLOW SENSOR

115 VAC SOLENOID VALVE

MOV recommended

115 VAC

(+) V Signal

Common

StartStop

123456

Remote Counter

13 PULSE OUTPUT +

PULSE OUTPUT -

ANALOG OUTPUT -

ANALOG OUTPUT +

RLY1

RLY2

AC LINE AC LINE24

18 COM 19 20 21 22

NO NC COM NO

14 15 16

17 NC

POWER IN

DC -

4-20 mA

COM RLY3

COM RLY4

26 27 28 29 30

NO NC

DC +

25 NC

PULSE IN 1 PULSE IN 2

DC OUTPUT

COMMON

RTD EXCIT + RTD SENS

RTD SENS -

CNTR IN 1 CNTR IN 2 CNTR IN 3 COMMON

---------

8 9 10 11 12

2 3 4 5 6 7

SEE USER MANUAL

COMP

Iin +

Vin + Iin +

Vin +

FLOW

FLOW SENSOR

115 VAC

(+) V Signal

Common

123456

Remote Counter

100 Ohm DIN RTD

{ {

Alarm Relay 1

Alarm Relay 2

STRIP CHART

RECORDER

4.2 Typical Rate/Total Wiring:

Batcher Wiring

Rate / Total Wiring

FC-21 Flow Computer

4.3 Wiring In Hazardous Areas:

Examples using MLT787S+ Barrier (MTL4755ac for RTD)

1 2 3 4

4-20

Q/∆P

–

2 1

3 4

28V

Diode

24V Out

4-20mA In Common

4-20mA Flow

Transmitter

Hazardous Area Safe Area

Flow Input

Hazardous Area Safe Area

Temperature Input (4-20mA Transmitter)

4-20

–

1 2

4 3

28V

Diode

24V Out

4-20mA Temp.

Transmitter

4-20mA In

Common

Temperature Input (4-20mA Transmitter)

Hazardous Area Safe Area

Temperature Input (RTD)

4 5 6 7 8

1 2 3 4 5 6

7 8 9 10 11 12 13 14 15 16 17

Common

RTD Excite (+) RTD Sense (+) RTD Sense (–)

3-Wire RTD

Temperature Input (RTD)

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 the following usage summary before attempting to use the instrument.

HELP

On-line help is provided to assist the operator in using this product. The help is available during RUN and SETUP modes simply by pressing the HELP key. The HELP key is used to enter decimals when entering numeric values.

FUNCTION KEYS

In the RUN mode, several keys have a special, direct access feature, to display an item of interest (i.e. RATE, TOTAL, PRE 1, etc.). Press the key to view your choice. Press the SCROLL key to return to scrolling display.

CLEARING TOTALIZER

To clear the total, you must press the TOTAL Function Key 3 times. You will be asked to verify this action. The operator will be prompted to enter password if the unit is locked. NOTE: In the Batcher Mode, simply press the CLEAR key to reset the total (the

batcher must be stopped or finished batching). It is not necessary to press the TOTAL Function Key first.

CLEARING GRAND TOTAL

To clear the grand total, you must press the GRAND Function Key 3 times. You will be asked to verify this action. The supervisor will be prompted to enter the supervisor password if the unit is locked.

PRESET KEYS

In the RUN mode, PRE 1 & PRE 2 keys are used to view and/or change the preset setpoints. To view the Presets, simply press the desired Preset key. Rapidly press the Preset keys 3 times, then press the Clear key for direct editing of the preset setpoints.

SCROLL

Rapidly press the Scroll key twice to setup a display list. Press the CLEAR key to remove old scroll list. Press the function key for the item you wish to add Use the ∆ ∇ keys to assign the line.

The PRINT key is used to print on demand. When the PRINT key is pressed, a user defined list of data (TOTAL, RATE, PRE 1, etc.) is sent to the RS-232 port. A timed message of "PRINTING" will be displayed to acknowledge the print request.

SPECIAL BATCHING KEYS

The START and STOP keys are used only when batching to start and stop batches. The CLEAR key will clear the total without first pressing the TOTAL key (unit must be stopped). All other keys work the same in both Rate/Total mode and Batch mode. The Start and Stop keys operation are set by the control input settings. The Start options are: START or RESET/START. The Stop options are: STOP or STOP/RESET.

MENU KEY

The MENU key is used to enter the Setup and Test modes. Press the MENU key to enter the Setup and Test modes. (See section 6 for Setup mode, section 8 for Test mode). The MENU key is used as "escape" in Setup and Test Programming. Pressing the MENU key wile programming in the Sub-Menu groups will backup the display to that Sub-Menu group heading. Pressing the MENU key while viewing the Sub-Menu groups will backup the display to the Top Level Menu.

ACKNOWLEDGING ALARMS

Most alarm messages are self-clearing. Press the ENTER key to acknowledge and clear alarms.

NOTE: Some keys and functions are password protected. Enter the password to

gain access. The passwords are factory set as follows:

Operator = 0 Supervisor = 2000

How To Use On-Line Help

How To Use Function Keys

How To Clear The Totalizer

How To Clear The Grand Total

How To Enter Presets

How To Create a Scroll List

How To Use The Print Key

How To Use Special Batching Keys

How To Use The Menu Key

How To Acknowledge Alarms

STOP

START

–

TIME

CLEAR•MENU

ENTER

HELP

TEMP

PRE 1

RATE

TOTAL

GRAND6SCROLL7PRE 28DENS

FC-21 Flow Computer

5.2 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). The unit can perform Mass or Corrected Volume equations using a temperature or density sensor (these equations can be computed without Temp/Dens sensors by using user defined default values). The unit can be programmed to perform Ratemeter/Totalizer or Batching functions (see section 6.3, SELECT INSTRUMENT Submenu).

5.3 Ratemeter/Totalizer Operation

The Ratemeter/Totalizer mode is used primarily to monitor flowrate and accumulated total. The relays can be used to trigger flow, total, temperature or density alarms.

5.3.1 Password Protection for Rate/Total mode

After an Operator and/or Supervisor Password is entered in the setup mode (see section 6.3, SETUP PASSWORD submenu), the unit will be locked. The unit will prompt the user for the password when trying to perform the following functions:

Clear Total Clear Grand Total Enter Menu Edit Preset 1 (PRE 1 Key) Edit Preset 2 (PRE 2 Key)

The Supervisor password should be reserved for supervisors. The Supervisor password will allow access to restricted areas of the Setup and Test menus.

5.3.2 Relay Operation in Rate/Total mode

Up to four relays are available (two standard) for alarm outputs. The relays can be assigned to trip according to rate, total, temperature, density readings or general system alarms. The relays can be programmed for low or high alarms. Preset 1 (RLY1) and Preset 2 (RLY2) are easily accessible by pressing the PRE 1 or PRE 2 key on the front panel. Preset 3 and Preset 4 are accessible only through the setup menu.

5.3.3 Pulse Output in Rate/Total mode

The isolated pulse output (open collector) is menu assignable to Volume Total, Corrected Volume Total or Mass Total. The pulse output duration can be set for 10mS (50 Hz max) or 100mS (5 Hz max). A pulse output scale factor (pulse value) can be set to scale the pulse output. The pulse output is ideal for connecting to remote totalizers or other devices such as a PLC. See section

1.3 for electrical specifications.

5.3.4 Analog Output in Rate/Total mode

The analog output is menu assignable to correspond to the Volume Rate, Corrected Volume Rate, Mass Rate, Temperature, Density, Volume Total, Corrected Volume Total or Mass Total. The analog output is ideal for "trend" tracking using strip chart recorders or other devices.

General Operation

Rate/Total Operation

Password Protection

(Rate/Total mode)

Relay Operation

(Rate/Total mode)

Pulse Output

(Rate/Total mode)

Analog Output

(Rate/Total mode)

FC-21 Flow Computer

5.3.5 RS-232 Serial Port Operation in Rate/Total mode

The RS-232 serial port can be used for programming (using the Setup Disk) or for communicating to printers and computers in the Operating Mode (Run Mode).

PC Communications:

The Setup Disk also allows the user to query the unit for operating status such as Flow Rate, Flow Total, Temperature, Density, Presets, etc.

Operation of RS-232 Serial Port with Printers:

Transaction Printing For transaction printing, the user defines the items to be included in the printed document (see section 6.3.20 SET DATA OUTPUT, Select_list). The transaction document can be initiated by pressing the PRINT key or by a remote contact closure.

Data Logging In data logging, the user defines the items to be included in each data log (see section 6.3.20 SET PRINTER OUTPUT, Select_list). The user can also select when (time of day) or how often (print interval) the data log is to be made (see section 6.3.19 SET PRINTER OUTPUT, Configure).

System Setup and Maintenance Report The system setup and maintenance report lists all of the instrument setup parameters and usage for the current instrument configuration. The audit trail information and a status report is also printed. This report is initiated in the Test menu (see section 8.2.3 PRINT SYSTEM SETUP).

RS-232 Serial Port

(Rate/Total mode)

5.3.6 RS-485 Serial Port (optional)

RS-485 Port Description:

The optional RS-485 card utilizes Modbus RTU protocol to access a variety of process parameters and totalizers. The Relays can be controlled via Modbus. In addition, action routines can be executed. For further information, contact factory and request RS-485 Protocol manual.

Operation of Serial Communication Port with PC

The flow computer's RS-485 channel supports a number of Modbus RTU commands. Modbus RTU drivers are available from third party sources for a variety of 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. Time and date are read as a series of integer register values. Alarms are individually read as coils. Action routines are initiated by writing to coils.

RS-485 Serial Port

(Rate/Total mode)

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. Once started, the relays (RLY1 & RLY2) will energize and send power to a flow control device (i.e. solenoid valve or pump). The flow sensor will send a signal to the unit and total accumulation will begin. When the Prewarn value (PRE 2) is reached, Relay 2 will drop out (this is ideal for flow slow down). When the Batch amount (PRE 1) is reached, Relay 1 will drop out and the Batch is complete.

Several messages will be displayed during normal batch operation (i.e. Batch Fill, Batch Stopped). The keypad is disabled for the duration of these timed messages (approx. 2 sec).

5.4.1 Batcher Configuration.

When the unit is programmed for batch mode, several batch operation choices are available. These choices include: Up or Down Counting, Maximum Batch Preset, Batch Overrun Compensation, Auto Batch Restart, Time Delay, Flow Signal Timeout, Maximum Drain Time, Slow Start Quantity, Start or Reset/Start, and Stop or Stop/Reset.

Batch Count Mode

The Batch Count Mode allows the user to choose whether the unit will batch up to a preset value or batch down from a preset value to zero.

Maximum Batch Preset

The Maximum Batch Preset allows the user to program the Maximum Batch value allowed to be entered by the operator. If an operator should try to program a batch higher then this value, the unit will not allow the value to be entered and will prompt the user with an error message saying that the Maximum Batch Preset has been exceeded.

Batch Overrun

The Batch Overrun is used for batch applications that have slow responding valves and a consistent batching flowrate. When the Batch Overrun is set, the unit will compensate for batch overruns by computing an averaged overrun value from the last four batches. This average is used to internally adjust the batch setpoint to minimize overrun.

Auto Batch Restart

The Auto Batch Restart function allows the user to set an amount of time to automatically restart a batch after the completion of a batch. This time can be set from 1 to 99 seconds.

Time Delay

The Time Delay for Auto Batch Restart functions as follows: When a batch is completed, the next batch will automatically start after the amount of time entered here.

Flow Signal Timeout

The Flow Signal Timeout allows the user to enter a timeout of 0 to 99 seconds. If a batch is “Filling” and zero flow persists for more than the user entered time then the batch will be aborted. This prevents over flows due to faulty flow sensors and/or wiring.

Maximum Drain Time

The unit declares that a batch is “done” when the flow rate equals “0”. A flow rate may be present long after the Preset Relay de-energizes due to slow reacting valves or leaky valves. The Maximum Drain Time allows the user to enter an amount of time (0 to 99 seconds) to wait before declaring “Batch Done”. After the Preset Batch quantity is reached, the unit will declare “Batch Done” when the flow rate is “0” or the Maximum Drain Time has expired. The batch data will then be available for printing and datalogging.

Batcher Configuration

FC-21 Flow Computer

Slow Start Quantity

The Slow Start Quantity is a function that allows an amount to be entered for a Slow 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 Slow Start Quantity has been delivered. This helps reduce turbulence when filling an empty container.

START, RESET/START and STOP, STOP/RESET

When configuring the control inputs, Control Input1 can be set for START or RESET/START. When set for START, the unit will start batching when a signal is applied to Control Input1 or the front panel Start key is pressed. A separate Reset signal must be used to clear the previous batch total. When set for RESET/START, the unit will automatically reset then start when a signal is applied to Control Input1 or the front panel Start key is pressed (provided that the pervious batch was completed). If a previous batch was stopped during a batch cycle, the unit will Start from where it was stopped. Control Input 2 can be set for STOP or STOP/RESET. When set for STOP, the unit will stop batching when a signal is applied to Control Input 2 or the front panel Stop key is pressed. A separate Reset signal must be used to clear the batch total. When set for STOP/RESET, a running batch will stop when a signal is applied to Control Input 2 or the front panel Stop key is pressed. If the unit is Stopped or after a completed batch, the unit will reset when a signal is applied to Control Input 2 or the front panel Stop key is pressed. NOTE: Applying a voltage level to Control Input 2 will inhibit all Start inputs in

either mode.

5.4.2 Password Protection for Batcher Mode

Clear Grand Total Enter Menu

The Supervisor password should be reserved for supervisors. The Supervisor password will allow access to restricted areas of the Setup and Test menus.

The passwords are factory set as follows:

Operator = 0 Supervisor = 2000

5.4.3 Relay Operation in Batcher mode

Up to four relays are available (two standard) for alarm outputs. Preset 1 (RLY1) is reserved for batch amount, Preset 2 (RLY2) is reserved for prewarn. (see section 5.4 Batcher Operation for Relay 1 & Relay 2 functions) Preset 1 (RLY1) and Preset 2 (RLY2) are easily accessible by pressing the PRE 1 or PRE 2 key on the front panel. Preset 3 and Preset 4 are accessible only through the setup menu. Relays 3 and 4 can be assigned to trip according to rate, total, temperature, overrun or alarm. When Rate is selected the relays can be programmed for low or high alarms.

5.4.4 Pulse Output in Batcher mode

5.4.5 Analog Output in Batcher mode

Password Protection

(Batch mode)

Relay Operation

(Batch mode)

Pulse Output

(Batch mode)

Analog Output

(Batch mode)

FC-21 Flow Computer

5.4.6 RS-232 Serial Port Operation in Batcher mode

The RS-232 serial port can be used for programming (using the Setup Disk) or for communicating to printers and computers in the Operating Mode (Run Mode).

PC Communications:

The Setup Disk also allows the user to query the unit for operating status such as Flow Rate, Flow Total, Temperature, Density, Presets, etc.

Operation of RS-232 Serial Port with Printers:

5.4.7 RS-485 Serial Port (optional)

RS-485 Port Description:

The optional RS-485 card utilizes Modbus RTU protocol to access a variety of process parameters and totalizers. Batches/Relays can be controlled remotely via Modbus. In addition, action routines can be executed. For further information, contact factory and request RS-485 Protocol manual.

Operation of Serial Communication Port with PC

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.

RS-232 Serial Port

(Batch mode)

RS-485 Serial Port

(Batch mode)

FC-21 Flow Computer

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:

MODE CHANGES

Pressing the MENU key will offer selections of RUN, SETUP, TEST. RUN is the normal operating mode for the instrument. SETUP offers various sub-menus used for instrument setup. TEST offers various sub-menus for Test, Calibration and System Start-up.

Submenu GROUP NAVIGATION

Use the UP and DOWN arrow keys to navigate up and down through the Sub-Menu groups when in the SETUP or TEST mode. Press the ENTER key to enter a desired setup or test Sub-Menu group.

SELECTION OF ITEM

During setup, the unit will often offer multiple choices for a given topic. The topic prompt appears on the top line of the display. The choices are shown on the lower line of the display.

To select an item, press the key beneath the desired choice. The selected choice will blink. Press the ENTER key to accept the selected choice.

NUMERIC ENTRY

The keys labeled "0 - 9", "–", ".", CLEAR and ENTER are used to enter numerical values. A leading 0 will assume that you intend to enter a minus "–" sign. Press the CLEAR key to clear the existing value and to enable editing.

TEXT CHARACTER ENTRY

Some setup items (i.e. Descriptors, Units Label) require the user to enter text characters. Press CLEAR to enable editing. The UP and DOWN arrow keys are used to scroll through the available character sets for each individual character. Press the ENTER key to accept the character and advance to the next character.

How To Make Mode Changes

How To Navigate Through Sub-Menu Groups

How To Select Program Choices

How To Enter Numeric Values

How To Enter Text Characters

STOP

START

–

TIME

CLEAR•MENU

ENTER

HELP

TEMP

PRE 1

RATE

TOTAL

GRAND6SCROLL7PRE 28DENS

FC-21 Flow Computer

SELECT OPERATE STATE Run Setup Test

SELECT EZ SETUP

ARE YOU SURE? No Yes

INSTRUMENT TYPE Rate/Tot Batch

RATE TIME BASE Sec Min Hour Day

RATE DEC PLACES

TOTAL VOLUME UNITS

gal

TOTAL DEC PLACES

K_FACTOR TYPE Avg LinTbl UVC

AVERAGE KA-FACTOR ####### P/gal

LINEAR TABLE KA Fre01:######## Hz

LINEAR TABLE KA KA--01:##########

FS ANALOG OUT 20mA #######gal/m

RATE 00.0 gal/m TOTAL 0 gal

ENTER

6.2.1 TOP LEVEL SETUP MENU

Menus Display Notes

Select Setup to enter the instrument setup routine.

Press ENTER to begin EZ Setup routine.

Confirm that you want to run EZ Setup. Caution: Any previous program settings may be lost or reset.

Instrument Type.

Select the appropriate rate time base.

Enter the desired rate decimal location. 0-3 decimal places allowed.

Enter the desired totalizer units label.

Enter the desired totalizer decimal location. 0-3 decimal places allowed.

Enter the desired K-Factor Type.

If Average selected, Enter the desired Average K-Factor.

If LinTbl or UVC selected, Enter the desired frequency/ K-Factor pair for each point in the Linearization Table. Enter a frequency of 0 for any point other than Fre01 to exit Linearization Table setup.

Enter the desired full scale setting for the analog output.

Return to Run Mode

6.2.2 EZ Setup Submenu Groups

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. This setup assumes that you are 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. For a complete customized configuration, see sections 6.3 and 6.4.

ENTER

Through

16 Points

FC-21 Flow Computer

6.3 Setup Menus

6.3.1 Top Level Setup Menu

Menus Display Notes

6.3.2 Submenu Groups

SELECT OPERATE STATE Run 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

SETUP RELAYS

SETUP CONTROL INPUTS

SETUP REALTIME CLOCK

SERIAL USAGE

SETUP DATALOG/PRINT

ADMINISTRATIVE SETUP

SETUP NETWORK CARD

Select Setup to enter the instrument setup routine.

Refer to Page 20 for Details.

Refer to Page 22 for Details.

Refer to Pages 22 for Details.

Refer to Page 23 & 24 for Details.

Refer to Page 25, 26 & 27 for Details.

Refer to Pages 28 for Details.

Refer to Page 29 for Details.

Refer to Pages 29 for Details.

Refer to Page 30 for Details.

Refer to Page 30 & 31 for Details.

Refer to Page 32 for Details.

Refer to Page 33 for Details.

Refer to Page 34 for Details.

Refer to Pages 35 & 36 for Details.

Refer to Page 36 for Details.

Refer to Page 37 for Details.

START

STOP

ENTER

START

STOP

START

STOP

START

STOP

START

STOP

START

STOP

START

STOP

START

STOP

START

STOP

START

STOP

START

STOP

START

STOP

START

STOP

START

STOP

START

STOP

START

STOP

FC-21 Flow Computer

NotesDisplaySub-menus

6.4 Setup Sub-Menus

Refer to page 20 for EZ Setup routine.

Press the DOWN (stop) key to advance to Instrument Type. Press the UP (start) key to advance to Administrative Setup.

Press ENTER to enter Instrument Type submenus.

Press ENTER when Rate/Total is flashing to configure the instrument as a Ratemeter/ Totalizer.

If Rate/Tot selected, advance to Select Flow Equation.

Press ENTER to enter Instrument Type submenus.

Press ENTER when Batch is flashing to configure the instrument as a Batcher.

Select UP to Reset to 0 and count up to preset. Select DOWN to reset to Preset and count down to 0.

Enter the maximum allowable Batch Preset. The operator will not be able to enter a batch preset larger than this value.

Select ON to set the unit to operate using a Batch Overrun Compensation routine. Select OFF to inhibit Batch Overrun Compensation routine. (See Section 5.4)

Select On to enable the Auto Batch Restart. This will automatically restart the unit at the end of each batch run. Select Off if this is not desirable.

Enter Time Delay for Auto Batch Restart. When a batch is completed, the next batch will start after the amount of time entered here.

Enter a timeout of 0 to 99 seconds. If a batch is “Filling” and zero flow persists for more than this time, the batch will be aborted.

Enter time (0-99 sec.) for Max. Drain Time. After batch quantity is reached, “Batch Done” is declared when the flow rate is “0” or the Maximum Drain Time has expired.

Enter a quantity for a Slow Start up. RLY 2 (slow flow) will energize for Slow Start and RLY 1 (fast flow) will energize after the Slow Start Quantity has been delivered.

SELECT EZ SETUP

Advance To

INSTRUMENT TYPE

INSTRUMENT TYPE Rate/Tot Batch

Advance To

SELECT FLOW EQUATION

INSTRUMENT TYPE

INSTRUMENT TYPE Rate/Tot Batch

BATCH COUNT MODE Up Down

MAXIMUM BATCH PRESET

1000.0 gal

BATCH OVERRUN COMP Off On

AUTO BATCH RESTART Off On

TIME DELAY (1-99sec) 10

FLOW SIGNAL TIMEOUT 10

MAXIMUM DRAIN TIME 10

SLOW START QUANTITY 10

Advance To

SELECT FLOW EQUATION

ENTER

6.4.2 INSTRUMENT TYPE

6.4.1 SELECT EZ SETUP

START

STOP

ENTER

STOP

START

ENTER

STOP

START

ENTER

STOP

START

ENTER

STOP

START

ENTER

Rate/Tot

Batch

ENTER

STOP

START

ENTER

STOP

START

ENTER

FC-21 Flow Computer

ENTER

Sub-menus

Display

Notes

Press ENTER to enter Select Flow Equation submenus.

Press ENTER when desired flow equation is flashing.

Press ENTER to begin setup of the Indicators

Press ENTER when Total is flashing to configure the Totalizer Indicators

Enter the desired Total Descriptor

Enter the desired Volume Units Label for the Totalizer.

Select the desired Total Decimal Place.

0-3 decimal places allowed.

Press ENTER when Dens is flashing to configure the Density Indicators.

Enter the desired Density Descriptor.

Enter the desired Mass Units Label for Density.

Select the desired Density Decimal Place.

0-3 decimal places allowed.

6.4.5 SETUP INDICATORS

(Density)

SELECT FLOW EQUATION

SELECT FLOW EQUATION Volume Mass Cor/Vol

Advance To

SETUP INDICATORS

(Total)

SETUP INDICATORS

SETUP INDICATORS Total Dens Rate Temp

TOTAL DESCRIPTOR

TOTAL

TOTAL VOLUME UNITS gal

TOTAL DEC PLACES

Advance To

SETUP INDICATORS

(Density)

SETUP INDICATORS Total Dens Rate Temp

DENSITY DESCRIPTOR

DENS

DENSITY MASS UNITS

lbs

DENSITY DEC PLACES

Advance To

SETUP INDICATORS

(Rate)

ENTER

6.4.4 SETUP INDICATORS

(Total)

6.4.3 SELECT FLOW EQUATION

ENTER

FC-21 Flow Computer

Sub-menus Display Notes

6.4.7 SETUP INDICATORS

(Temperature)

Press ENTER when Rate is flashing to configure the Ratemeter Indicators

Select the desired Rate Time Base.

Enter the desired Descriptor for the Ratemeter.

Select the desired Rate Decimal Place.

0-3 decimal places allowed.

Enter desired Rate Averaging Filter.

Enter desired Percent of Change for Quick Update. If the current flowrate deviates by an amount greater than the percentage value entered, the Rate Averaging is inhibited. (See Page 57 for more details.)

Press ENTER when Temp is flashing to configure the Temperature Indicators.

Enter the desired Temperature Descriptor.

Enter the desired Temperature Scale.

Select the desired Temperature Decimal Place.

0-3 decimal places allowed.

ENTER

SETUP INDICATORS Total Dens Rate Temp

RATE TIME BASE Sec Min Hour Day

RATE DESCRIPTOR

RATE

RATE DEC PLACES

RATE AVG FILTER

QUICK UPDATE %

Advance To

SETUP INDICATORS

(Temperature)

SETUP INDICATORS Total Dens Rate Temp

TEMP DESCRIPTOR

TEMP

TEMPERATURE SCALE Deg_C Deg_F

TEMP DEC PLACES

Advance To

SETUP FLOW INPUT

6.4.6 SETUP INDICATORS

(Rate)

ENTER

FC-21 Flow Computer

6.4.8 SETUP FLOW INPUT

(Pulse - Ain & PS (A=B))

SETUP FLOW INPUT

EXCITATION VOLTAGE 5v 12v 24v

FLOW INPUT TYPE Pulse Analog

PULSE INPUT TYPE Ain PS(A=B) Qx1 Qx2

PULSE TRIGGER LEVEL 10mV 100mV 2.5V

LOW PASS FILTER 40Hz 3KHz 20KHz

INPUT TERMINATION Pullup Pulldown None

MAX WINDOW (1-99)

K_FACTOR TYPE Avg LinTbl UVC

AVERAGE KA-FACTOR

####### P/gal

LINEAR TABLE KA Fre01:######## Hz

LINEAR TABLE KA KA--01:####### P/gal

LOW FLOW RATE ALARM

####### gal/m

HIGH FLOW RATE ALARM

####### gal/m

Advance To

SETUP AUX INPUTS

ENTER

Press ENTER to begin setup of Flow Input.

Select the desired Excitation Voltage.

Press ENTER when Pulse is flashing to configure the flow input for Pulse signals.

Enter the desired Pulse type. See side note.

Select the desired Input Pulse Trigger Level.

Select the desired Low Pass Filter. (Max. Count Speed).

Select the proper input termination.

Enter the desired Maximum Sample Window Time (1-99 sec).

Enter the desired K-Factor Type.

If Avg selected, Enter the desired Average KFactor.

If LinTbl selected, Enter the desired frequency/ K-Factor pair for each point in the Linearization Table. NOTE: Enter 0 for Fre value of any point

(other than Fre01) to exit the routine and use the values entered up to that point.

Enter the desired volumetric Low Rate Alarm. This will trigger an alarm message if alarm conditions occur. The relays are not affected.

Enter the desired volumetric High Rate Alarm. This will trigger an alarm message if alarm conditions occur. The relays are not affected.

Sub-menus Display Notes

Through

16 Points

NOTE:

Ain = Single Pulse PS(A=B) = Pulse

Security Qx1 = Quadrature Qx2 = Quadrature x 2

FC-21 Flow Computer

6.4.9 SETUP FLOW INPUT

(Pulse - Quadrature, Qx1 or Qx2)

SETUP FLOW INPUT

EXCITATION VOLTAGE 5v 12v 24v

FLOW INPUT TYPE Pulse Analog

PULSE INPUT TYPE Ain PS(A=B) Qx1

Qx2

PULSE TRIGGER LEVEL 10mV 100mV 2.5V

LOW PASS FILTER 40Hz 3KHz 20KHz

INPUT TERMINATION Pullup Pulldown None

MAX WINDOW (1-99)

K_FACTOR TYPE Avg LinTbl UVC

AVERAGE KA-FACTOR

####### P/gal

AVERAGE KB-FACTOR

####### P/gal

LINEAR TABLE KA Fre01:######## Hz

LINEAR TABLE KA KA--01:####### P/gal

LINEAR TABLE KB Fre01:######## Hz

LINEAR TABLE KB KA--01:####### P/gal

LOW FLOW RATE ALARM

####### gal/m

HIGH FLOW RATE ALARM

####### gal/m

Advance To

SETUP AUX INPUTS

ENTER

Press ENTER to begin setup of Flow Input.

Select the desired Excitation Voltage.

Press ENTER when Pulse is flashing to configure the flow input for Pulse signals.

Enter the desired Pulse type. See side note.

Select the desired Input Pulse Trigger Level.

Select the desired Low Pass Filter. (Max. Count Speed).

Select the proper input termination.

Enter the desired Maximum Sample Window Time (1-99 sec).

Enter the desired K-Factor Type.

If Avg selected, Enter the desired Average KFactor (KA for channel A).

Enter the desired Average K-Factor (KB for channel B).

If LinTbl selected, Enter the desired frequency/ K-Factor pair for each point in the Linearization Table. (channel A) NOTE: Enter 0 for Fre value of any point

(other than Fre01) to exit the routine and use the values entered up to that

point. Enter the desired frequency/ K-Factor pair for each point in the Linearization Table. (channel B) NOTE: Enter 0 for Fre value of any point

(other than Fre01) to exit the routine

and use the values entered up to that

point.

Enter the desired volumetric Low Rate Alarm. This will trigger an alarm message if alarm conditions occur. The relays are not affected.

Enter the desired volumetric High Rate Alarm. This will trigger an alarm message if alarm conditions occur. The relays are not affected.

Submenus Display Notes

Through

16 Points

ENTER

Through

16 Points

NOTE:

Ain = Single Pulse PS(A=B) = Pulse

Security Qx1 = Quadrature Qx2 = Quadrature x 2

FC-21 Flow Computer

Sub-menus Display Notes

6.4.10 SETUP FLOW INPUT

(Analog)

SETUP FLOW INPUTS

EXCITATION VOLTAGE 5v 12v 24v

FLOW INPUT TYPE Pulse Analog

ANALOG SIGNAL TYPE Voltage Current

ANALOG VOLTAGE RANGE 0-10V 0-5V 1-5V

ANALOG CURRENT RANGE 4-20mA 0-20mA

LINEARIZATION TYPE Linear Sqrt LinTbl

LINEAR TABLE KA APR01:######## gal/m

LINEAR TABLE KA CFr01:########

FLOW LOW SCALE

####### gal/m

FLOW FULL SCALE

####### gal/m

LOW FLOW CUTOFF

####### gal/m

LOW FLOW RATE ALARM

####### gal/m

HIGH FLOW RATE ALARM

####### gal/m

Advance To

SETUP AUX INPUT

ENTER

Press ENTER to begin setup of the Flow Input.

Select the desired Excitation Voltage.

Press ENTER when Analog is flashing to configure the flow input for Analog signals .

Choose Analog Signal Type.

If Voltage selected, Choose desired Voltage Range.

If Current selected, Choose desired Current Range.

Select the desired Linearization Type.

If LinTbl selected, Enter the desired Apparent Input Flow (APR) / Correction Factor (CFr) pair for each point in the Linearization Table. NOTE: Enter 0 for APR value of any point

(other than APR01) to exit the routine and use the values entered up to that

point. Enter the low flowrate corresponding to the low analog signal.

Enter the High flowrate corresponding to the High analog signal.

Enter the desired Low Flow Cutoff.

Enter the desired volumetric Low Rate Alarm. This will trigger an alarm message if alarm conditions occur. The relays are not affected.

Enter the desired volumetric High Rate Alarm. This will trigger an alarm message if alarm conditions occur. The relays are not affected.

Through

16 Points

FC-21 Flow Computer

Sub-menus Display Notes

6.4.11 SETUP AUX INPUT

NOTE:

When Density (Dens) is selected, The menu prompts will be very similar to the Temperature prompts. The menus will prompt the user for density values and density units.

SETUP AUX INPUT

AUX INPUT TYPE None Dens Temp

AUX SIGNAL TYPE Voltage Current RTD

INPUT SIGNAL RANGE 0-10V 0-5V 1-5V

INPUT SIGNAL RANGE 4-20mA 0-20mA

AUX LOW SCALE ###### F

AUX FULL SCALE ###### F

AUX DEFAULT ###### F

AUX LOW ALARM ###### F

AUX HIGH ALARM ###### F

DENS EXTRACT METHOD Therm_Coef API_2540

Advance To

SET FLUID PROPERTIES

ENTER

Press ENTER to begin setup of the Auxiliary Input.

Select Temperature to set the Auxiliary Input for Temperature inputs.

Choose Temperature Signal Type. Advance to "Aux Default", if RTD selected.

If Voltage selected, Choose desired Voltage Range. Skip if RTD.

If Current selected, Choose desired Current Range. Skip if RTD.

Enter the low temperature scale corresponding to the low temperature signal. Skip if RTD.

Enter the high temperature scale corresponding to the high temperature signal. Skip if RTD.

Enter the Default Temperature. The unit will use this value if the temperature input fails.

Enter the Low setpoint for the Temperature Alarm.

Enter the High setpoint for the Temperature Alarm.

Choose the Density Extraction method to be used.

ENTER

FC-21 Flow Computer

Sub-menus Display Notes

6.4.12 SET FLUID PROPERTIES

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

SETUP PULSE OUTPUT

ENTER

Press ENTER at this prompt to Set Fluid Properties.

Enter the Reference Density. This is used in the calculation of density when you have a temp transmitter and used for corrected flow calculation if you have a density transmitter.

Enter the Reference Temperature.

Enter the proper Expansion Factor. (If Temp Compensated for Mass or Corrected Volume) See Section 7.4, Calculating the Expansion Factor.

Enter the Calibration Density. This is used in calculation of flow for analog inputs using SQRT.

Enter the Viscosity A Coefficient. See section

7.5, Computation of Viscosity Coef. A and B.

Enter the Viscosity B Coefficient. See section

7.5, Computation of Viscosity Coef. A and B.

Enter the Base Density H2O@4C. This is used in the centistoke calculation for UVC.

6.4.13 SETUP PULSE OUTPUT

Press ENTER at this prompt to setup the Pulse Output.

Select the desired Pulse Output Usage.

Select the desired Pulse Width for the Pulse Output.

Enter the desired Pulse Value for the Pulse Output (Units per Pulse).

ENTER

SETUP PULSE OUTPUT

PULSE OUTPUT USAGE Off Vol CVol/Mass

PULSE WIDTH 10mS 100mS

PULSE VALUE ####### gal/P

Advance To

SETUP ANALOG OUTPUT

ENTER

FC-21 Flow Computer

SETUP RELAYS

Rly1

Rly2 Rly3 Rly4

RELAY 1 USAGE RATE TOTAL NA

RELAY 1 DELAY sec 0

RELAY 1 MODE LO_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

6.4.14 SETUP ANALOG OUTPUT

ENTER

SETUP ANALOG OUTPUT

ANALOG OUTPUT USAGE Rate Total Temp Dens

ANALOG OUT FLOW TYPE Vol CVol/Mass

ANALOG OUTPUT RANGE 4-20mA 0-20mA

LS ANALOG OUTPUT

####### gal/m

FS ANALOG OUT 20mA

####### gal/m

ANALOG OUT DAMPING

0.0

Advance To

SETUP RELAYS

Press ENTER when Analog is flashing to setup the Analog Output.

Select the desired Analog Output Usage.

Only if Rate selected & Flow EQ. = Mass, Cor/Vol Select the desired Analog Output Flow.

Select the desired current range for the Analog Output.

Enter desired Analog Output Low Scale Value. NOTE: Units label will correspond with output

usage type selected.

Enter desired Analog Output Full Scale Value.

Enter the desired Analog Output Damping Constant.

ENTER

6.4.15 SETUP RELAYS (Relay 1 & Relay 2)

ENTER

Select the desired Relay for setup. (Relays 3 & 4 Optional)

If Relay 1 or Relay 2 Selected, Select Rate, Total or NA.

If Rate selected, enter desired relay activation delay value.

Select the desired Relay Activation. Low: Relay activates when reading is below

setpoint.

High:Relay activates when reading is above

setpoint. If Total Selected, Enter desired Relay Duration.

Enter the desired Setpoint. The Setpoint can be edited in run mode using the PRE 1 key (PRE 2 key for Relay 2).

If Rate, selected, Enter desired Relay Hysteresis.

NOTE:

In Batch mode, Relay 1 is reserved for Preset, Relay 2 is reserved for Prewarn.

ENTER

FC-21 Flow Computer

ENTER

6.4.15 (Continued) SETUP RELAYS (Relay 3 & Relay 4)

ENTER

SETUP RELAYS Rly1 Rly2 Rly3 Rly4

RELAY 3 USAGE Rate Tot Aux Ovrn NA

RELAY 4 USAGE Rate Tot Aux Alrm NA

RELAY 3 DELAY sec 0

RELAY 3 MODE LO_ALARM HI_ALARM

RELAY 3 DURATION

#####

RELAY 3 SETPOINT

####### gal

RELAY 3 HYSTERESIS

##### gal/m

Advance To

SETUP CONTROL INPUTS

Select the desired Relay for setup. (Relays 3 & 4 Optional)

If Relay 3 Selected, Choose Rate, Total, Aux, Ovrn or NA.

If Relay 4 Selected, Choose Rate, Total, Aux, Alrm or NA.

If Rate / Aux selected, enter desired relay activation delay value.

Select the desired Relay Activation for Rate/Aux. Low: Relay activates when reading is below

setpoint.

High:Relay activates when reading is above

setpoint. If Total Selected, Enter desired Relay Duration.

Enter the desired Setpoint.

If Rate, selected, Enter desired Relay Hysteresis.

NOTE:

Settings for Relays 3 & 4 may be entered even if relays are not supplied. The settings will still trigger display alarms.

Sub-menus Display Notes

ENTER

RELAY NOTES & CONSIDERATIONS

1. Relay activation is based on the computed readings not the displayed value. Therefore the display damping factor will not affect the relay response time. The RELAY N DELAY feature allows the user to enter a time delay for relay activation. This feature is very useful in applications where short over/under range conditions are not considered alarm conditions. The Relay is a delay on make and delay on break. Alarm condition must be continuously present for a time greater than the entered RELAY N DELAY in order for alarm to activate. Once alarmed, the alarm condition must be continuously absent for a time greater than the entered RELAY N DELAY in order for the alarm condition to be reset.

2. When INSTRUMENT TYPE is set to batcher, Relay 1 is reserved for PRESET and Relay 2 is reserved for PREWARN.

3. Setting the relays to NA (Not Assigned), will allow the relay activation to be controlled via the RS-232 Serial and/or RS-485 Modbus ports.

4. Relay 3 and Relay 4 settings may be used to trigger display alarm conditions even if the relays are not supplied.

5. Relay 4 Alarm Operation. When Relay 4 is set for Alarm (Alrm) the relay functions as follows: The relay will energize when it is NOT in an alarm condition. It is therefore recommended to use the Normally Closed (N.C.) relay contacts on Relay 4 when wiring for alarm conditions. The Alarm Relay functions in this manner to ensure that the alarm output will signal on power loss or blown fuse. Other alarm conditions include:

PULSEOUT OVERFLOW SOFTWARE ERROR RESET EXTENDED PFI LOCKUP RTD/ THERM FAILURE

FC-21 Flow Computer

Sub-menus Display Notes

6.4.16 SETUP CONTROL INPUTS

(RATE/TOTAL)

Press Enter to begin setup of the Control Inputs.

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 NA (Not Assigned).

If Control Input 3 Selected, Select Prn (Print), Ack (acknowledge), KeyLk (Keylock) or NA (Not Assigned). ACK will acknowledge and clear alarms and warning messages. Note: Alarms may reassert themselves if alarm conditions are still present.

Select the desired Control Input for setup.

If Control Input 1 Selected, Select Start ,Reset/Start, NA (Not Assigned).

If Control Input 2 Selected, Select Stop, Stop/Reset, NA (Not Assigned).

SETUP CONTROL INPUTS

SETUP CONTROL INPUTS Input1 Input2 Input3

CONTROL INPUT1 USAGE INHIBIT_TOTAL NA

CONTROL INPUT2 USAGE RESET_TOTAL NA

CONTROL INPUT3 USAGE Prn Ack KeyLk NA

Advance To

SETUP REALTIME CLOCK

SETUP CONTROL INPUTS Input1 Input2 Input3

CONTROL INPUT1 USAGE Start Rst/Start NA

CONTROL INPUT2 USAGE Stop Stop/Rst NA

CONTROL INPUT3 USAGE Rst Prn KeyLk Ack NA

Advance To

SETUP REALTIME CLOCK

ENTER

6.4.17 SETUP CONTROL INPUTS

(BATCH)

ENTER

FC-21 Flow Computer

ENTER

FC-21 Flow Computer

Sub-menus Display Notes

ENTER

6.4.20 SERIAL USAGE

ENTER

SERIAL USAGE

SERIAL HARDWARE RS232 RS485

DEVICE ID ##

BAUD RATE 300 600 1200 <more>

BAUD RATE 2400 4800 9600 19200

PARITY None Odd Even

HANDSHAKING None Softwre Hardwre

DEVICE LINE FEED <CR> <CR+LF>

MODEM OPTIONS No Yes

MODEM INIT MASTER No Yes

MODEM AUTO ANSWER No Yes

CALL OUT PHONE # 0

CALL OUT TIME ##:##:##

Continued on Next Page

Press Enter to begin setup of the Serial Port.

Select Serial Hardware type for standard port. (See SETUP NETWORK CARD for RS485 Modbus option)

Select the Device ID.

Select the desired Baud Rate.

(If <more> selected)

Select the desired Parity.

Set the Handshake.

Choose end of line termination. Only choose <CR> if your external device automatically assigns a line feed for every <CR> carriage return.

Select "Yes" if the serial port will be used to control a modem.

Select "Yes" to have the unit engage in a configuration conversation with the modem on power up .

Select the desired Modem Auto Answer mode.

Enter the Call Out Phone Number to be dialed for "Call Out Time" or "Print On Error/Alarm".

Enter the time of day to perform Call Out transmission.

ENTER

FC-21 Flow Computer

ENTER

CALL ON ERROR/ALARM No Yes

NUMBER OF REDIALS 0

HANGUP IF 2MIN INACT No Yes

Advance To

SETUP DATALOG/PRINT

SETUP DATALOG/PRINT Config Select_list

OUTPUT FORMAT Printer Term Dbase

PAGE LENGTH [66 max] 66

TOP MARGIN [60 max] 3

DATALOG PRINT ONLY No Yes

PRINT TIME HH:MM:SS 00:00:00

PRINT INTERVAL 00:00:00

ENABLE PRINT KEY NO YES

PRINT END OF BATCH NO YES

Advance To

SETUP DATALOG/PRINT

(Select_list)

Select "Yes" to have the unit perform a Call Out transmission upon error/alarm condition.

Enter the number of redials to be performed on call out time if busy or no answer. (error/ alarm tries until connected)

Select "Yes" to perform hangup if there is inactivity for more than 2 minutes.

Press Enter to setup the Datalog/Print information.

Select Config to configure the Datalog/Print information.

Select the type of Output Format.

Enter the desired Page Length. If Printer selected above.

Enter the desired Top Margin. If Printer selected above.

Select Yes to record events to the datalogger only. Events will not be sent to the serial port.

Enter Print Time, printer will print at this time every day. Enter 00:00:00 to inhibit print time.

Enter Print Interval, Enter 00:00:00 to inhibit print interval..

Select YES to enable Print Key. Select NO to disable Print Key

Batch mode only. Select Yes to print at end of batch.

ENTER

6.4.21 SETUP DATALOG/PRINT

(Configure)

ENTER

Sub-menus Display Notes

ENTER

6.4.20 SERIAL USAGE (continued)

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.

Enter Operator Password. (Factory Set to 0)

Enter Supervisor Password. (Factory Set to 2000)

This display is used to show the software version of the installed software.

This display is used to show the product order code (model number).

This display is used to show the unit's serial number.

This display is used to show the sensor's serial number.

ENTER

6.4.23 ADMINISTRATIVE SETUP

6.4.22 SETUP DATALOG/PRINT

(Select_list)

ENTER

Press enter to begin Setup Datalog/Print routine.

Press enter when Select_list is selected to setup print list.

Use Up and Down arrow keys to view list status. Press the Corresponding function key to the items that you wish to add or remove from the list. Items marked with Yes will be added to the list, items marked with No will be removed from the list.

The Select Print List Information display shows the current possible Datalog size.

SET DATALOG/PRINT

SET DATALOG/PRINT Config Select_list

PRINT LIST ITEMS TOTAL YES

PRINT LIST ITEMS RATE YES

PRINT LIST ITEMS PRE 1 YES

PRINT LIST ITEMS DataLog size =001489

Advance To

ADMINISTRATIVE SETUP

ENTER

STOP

START

List Items:

TOTAL RATE PRE1 TEMP GRAND PRE2 DENS TIME

FC-21 Flow Computer

6.4.24 SETUP NETWORK CARD (optional)

ENTER

SETUP NETWORK CARD

SELECT NTW PROTOCOL ModbusRTU

NETWORK DEVICE ID 1

BAUD RATE 2400 4800 9600 19200

PARITY None Odd Even

Advance To

SELECT EZ SETUP?

Press Enter to setup Network Card

Select desired Network Protocol.

Enter the device address on network (00-

255).

Select the desired Baud Rate.

Select the desired Parity.

ENTER

FC-21 Flow Computer

7. Principle Of Operation

7.1 General:

The FC-21 Flow Computer uses several internal calculations to compute the compensated flow based on specific data input. Several computations are performed to arrive at the uncompensated flow, temperature, density and viscosity. This information is then used to compute the Corrected Volume Flow or Mass Flow.

7.2 Orifice Flowmeter Considerations:

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. This information must also be input if the user is to obtain maximum accuracy.

It is assumed that the user has the printout from a standardized orifice sizing program for the particular device he will be using. Such standardized printouts list all the necessary information which the user will then be prompted for.

Several specialized flow equations are listed that are not intended for the standard unit but to be offered to appropriate OEMs or as special order items. These are designated by a “†”.

Note concerning Fluid Information

The user will be prompted for Fluid Information during the setup of the instrument. The Factory will be preparing application information for several common fluid types.

7.3 Flow Equations:

Input Flow Computation:

Linear or External SQRT

Input Flow = [% input span * (flow FS - flow low scale)]+ flow low scale

Orifice

Input Flow = [(√% input span) * ( flow FS - flow low scale)] + flow low scale

Input Flow Computation:

General Case

Tf = [% input span * (temp FS - Temp low scale)] + temp low scale

RTD Case

Tf = f(measured input resistance)

Input Density Computation:

Temperature Transmitter

density = reference density * (1 - Therm.Exp.Coef. * (Tf-Tref))

Density Transmitter

density = [% input span * (density FS - density low scale)] + density low scale

General Operation

Orifice Flowmeter Considerations

Flow Equations

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-Factor (Hz)

Pulse Input; UVC

input frequency * time scale factor

† Volume Flow =

K-Factor (Hz/cstk)

Analog Input; Linear

Volume Flow = input flow

Analog Input; Linear Table

Volume Flow = input flow * correction factor (input flow)

Analog Input; Orifice or External SQRT

√(calibrated density)

Volume Flow = input flow *

√(density)

Analog Input; Orifice Linear Table or External SQRT Linear Table

√(calibrated density)

† Volume Flow = CF(rn) * input flow *

√(density)

Corrected Volume Flow Computation:

Temperature Transmitter

Standard Volume Flow = volume flow * (1 - Therm.Exp.Coef. *(Tf-Tref))

Density Transmitter

density

Standard Volume Flow = volume flow *

reference density

Mass Flow Computation:

Mass Flow = volume flow * density

† These special flow equations are not available in the standard unit. They are to be

offered to OEMs or as special order items.

A exp

(Deg F + 459.67)

Absolute Density

()

† centistokes =

Where: centistokes = cP/(kg/l)

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.

FC-21 Flow Computer

7.4 Calculating the Expansion Factor

The liquid density is a function of the flowing temperature for many fluids. This unit solves 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 in the following variables: Reference Temperature, Reference Density, Expansion Factor. This information is available for many fluids in one or more of the following forms:

Fluid Specific Gravity vs. Temp. Table Specific Gravity vs. Temp. Graph Fluid Density vs. Temp. Table

Fluid Density vs. Temp. Graph Begin by obtaining one of the fluid properties for the fluid you are using from available manufacturers information or Engineering Handbooks. In some cases this information is listed on the Material Safety Data Sheet for the fluid. Two temperature-specific gravity pairs will be required to compute the temperature coefficient. The reference temperature is simply chosen by the user. Common reference temperatures are 60° F or 15° C. However, for cryogenic fluids, the normal boiling point may also be used. In some cases the fluid data may list properties at 100° F, this temperature may also be used as the reference temperature. The reference temperature should be chosen so that it is in the application temperature range. i.e. application temperature range -10 to 120° F, reference temperature of 60° F chosen. Enter the reference temperature you have chosen at this point. The reference specific gravity corresponds to the fluid SPECIFIC GRAVITY at the reference temperature chosen. You may convert the fluid density information to specific gravity if it is in units other than specific gravity. Use EQ1.

EQ1.

Spec.Grav. = Density of Fluid / Density of Water

Given the reference temperature, reference specific gravity, a second temp. and a second Spec.Grav., the Expansion Factor (C Factor) can be computed as follows:

EQ2. Used for Liquid Mass and Corrected Volume Equations

1 - (Spec.Grav.2 / Ref.Spec.Grav.)

Temp.2 - Ref.Temp

√

[]

x 1,000,000C =

Given the reference temperature, reference density, a second temp. and a second density, the Expansion Factor (C Factor) can be computed as follows:

EQ3. Used for Liquid Mass and Corrected Volume Equations

Calculating Expansion Factor

Expansion Factor Equations

1 - (Dens.2 / Ref.Dens.)

Temp.2 - Ref.Temp

√

[]

x 1,000,000C =

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 function of temperature. Two parameters must be entered for this calculation to be performed. These are the setup parameters Viscosity Coef. A and Viscosity Coef. B.

Alternately, if your intended fluid is not listed, the Viscosity Coef. A and B can be derived from two known temperature/viscosity pairs. Begin by obtaining this information for you intended fluid. Convert these known points to units of Degrees F and centipoise (cP)

The information is now in a suitable form to compute the Viscosity Coef. A and Viscosity Coef. B using the following equation based on the fluid state.

For a liquid, A and B are computed as follows:

(T1 + 459.67) • (T2 + 459.67) • ln [ cP1/cP2]

B = ——————————————————————

(T2 + 459.67) - (T1 + 459.67)

cP1

A = ———————————

exp [ B / ( T1 + 459.67) ]

cP • Density of Water at 4°C

NOTE: cS = ——————————————

Density of Liquid

Computation of Viscosity Coef. A & B

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 nonlinear input signal. The unit uses up to 16 different points, as entered by the operator, to form a curve for linearizing the input signal.

Notes:

1) A minimum of three points must be set up.

2) If "0" is entered for the frequency of any point other than point 1, the Flow Computer assumes there are no more points above the points that preceded them. The display will advance to the next setup prompt. Extrapolation is taken from the last two nonzero points.

3) If the input frequency is above the highest or below the lowest frequency programmed, the unit will use the last known point for the K factor in computing the resulting actual flow.

4) Frequencies or apparent flows should be entered in ascending order.

7.6.2 Linearization Table for Pulse Inputs

The linearization table for pulse inputs programming is quite simple when values of frequency and flow are known. The Flow Computer asks for 16 different frequencies (Freq) and 16 corresponding K factors (K). It then uses this data to determine what the actual flow is for any given input frequency. Usually the necessary data is provided with the flowmeter.

7.6.3 Linearization Table for Analog Inputs

The Linearization Table for Analog inputs programming is similar to the Pulse input setup. The Flow Computer asks for 16 different flow rates (apparent flow) and 16 corresponding Correction Factors. It then uses this data to determine what the Actual flow is for any given apparent input signal. Again, a minimum of three points must be set up.

Correction factor =

Actual Flow

Apparent Input Flow

The same rules that applied for the Digital setup apply for the Analog setup as well. The Flow Computer prompts you for the Apparent input signal (APR) and a correction factor CFr) to multiply it by to yield true actual flow.

7.6.4 Linearization Table Interpolation

The Linearization Table routine uses the entered data to determine the K factor for any given input frequency or input flow signal. This is done by taking the closest data points above and below the input signal, then using those points to extrapolate the K factor (correction factor), then calculating the uncompensated flow from the data. Below are the formulas.

Parameters: Determine closest point above input signal signal = X, K factor (correction factor) = KA

Determine closest point below input signal signal = Y, K factor (correction factor) = KB

Let input signal = H, unknown K factor (correction factor) = KN

To find KN use this formula:

KA KN KB

Y H

Input

K factor

x (KA - KB) + KB = KN

H - Y X - Y

Linearization Table General Information

Linearization Table

(Pulse Inputs)

Linearization Table

(Analog Inputs)

Linearization Table Interpolation

FC-21 Flow Computer

SELECT OPERATE STATE Run 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 Test Menus

8. Test, Service and Maintenance

Menus Display

Notes

START

STOP

START

STOP

START

STOP

START

STOP

START

STOP

START

STOP

START

STOP

START

STOP

START

STOP

START

STOP

START

STOP

START

STOP

START

STOP

START

STOP

8.1.1 TOP LEVEL TEST MENUS

STOP

START

Select Test to enter the instrument test & calibration routine.

NOTE: Supervisor (Service) password

required to gain access to this mode.

Refer to Page 40 for Details.

Refer to Page 41 Details.

Refer to Page 41 for Details.

Refer to Pages 42 - 46 for Details.

Refer to Page 46 Details.

Refer to Page 47 for Details.

Refer to Page 48 for Details.

Refer to Page 49 for Details.

ENTER

FC-21 Flow Computer

8.2 Test Sub-Menus

Press Enter to view the audit trail information.

The audit trail is viewed in this format: nnnnn= number of critical menu changes, hh:mm:ss; mm/dd/yy = time and date of last change.

Press Menu to get back to audit trail top-level menu.

Press Enter to view error history.

NOTE: Press Print Key to print Error History. Printout will include time/date of each errors first occurrence.

Press Up/Down arrow keys to scroll through error message history. Press CLEAR to clear entire error log.

Press Menu to get back to error history top=level menu.

Press enter key to enter print system setup submenu

Press enter to begin printing the system setup.

This message will display as the data transmission takes place.

Press Menu to get back to print system setup top-level menu.

ENTER

Audit Trail

Audit Trail nnnnn hh:mm:ss mm/dd/yy

Audit Trail

Error history

Error history Flow rate alarm low

Error history

Print System Setup

Print System Setup Press ENTER to print

Print System Setup —— Printing ——-

Print System Setup

ENTER

Display NotesSub-menus

8.2.1 Audit Trail Submenu Group

8.2.2 Error History Submenu Group

8.2.3 Print System Setup Submenu Group

FC-21 Flow Computer

Sub-menus Display Notes

8.2.4 Keypad test Submenu Group

8.2.5 Display test Submenu Group

ENTER

Keypad test

Keypad test Key pressed—> ENTER

Keypad test

Display test

00000000000000000000 00000000000000000000

Display test

ENTER

Press Enter to enter keypad test

Press the various keys and the display will show the key that was pressed. Press Menu to exit the test

Press Menu to get back to Keypad test toplevel menu.

Press Enter to enter display test.

Upon pressing enter the each digit on the display will scroll 0-9 then A-Z. Press menu to exit the test.

Press Menu to get back to Display test toplevel menu.

FC-21 Flow Computer

Sub-menus Display Notes

Calibrate

Calibrate ch1 0mA Iin=TB1-3 GND=TB1-4

Calibrate ch1 0mA CALIBRATING ——

Calibrate ch1 0mA *** DONE ***

Calibrate ch1 0mA Iin=TB1-3 GND=TB1-4

Calibrate ch1 20mA Iin=TB1-3 GND=TB1-4

Calibrate ch1 20mA 0 CALIBRATING ——

Calibrate ch1 20mA *** DONE ***

Calibrate ch1 20mA Iin=TB1-3 GND=TB1-4

Advance to

Calibrate ch2 0mA

ALL UNITS ARE CALIBRATED AT THE FACTORY PRIOR TO SHIPMENT CAUTION:

This unit must be calibrated using precision and calibrated equipment.

Equipment needed is as follows: Frequency Generator, Digital Multimeter, Precision Current/Voltage Source, Oscilloscope, Frequency Counter.

Calibration Submenu Group

8.2.6 Calibrate CH1 0mA Submenu Group

Press Enter to begin the calibration routine. (Please note the caution above)

Connect Current Source (+) TB1-3, (-) TB1-4. Input 0mA and press Enter.

This message is displayed during calibration.

This message is displayed when the 0mA calibration is finished.

The display will automatically return to the Calibrate CH1 0mA submenu. Press the Down arrow key to advance to the CH1 20mA calibration.

Connect Current Source (+) TB1-3, (-) TB1-4. Input 20mA and press Enter.

This message is displayed during calibration.

This message is displayed when the 20mA calibration is finished.

The display will automatically return to the Calibrate CH1 20mA submenu. Press the Down arrow key to advance to the CH2 0mA calibration.

ENTER

STOP

8.2.7 Calibrate CH1 20mA Submenu Group

ENTER

STOP

FC-21 Flow Computer

8.2.8 Calibrate CH2 0mA Submenu Group

8.2.9 Calibrate CH2 20mA Submenu Group

Calibrate ch2 0mA Iin=TB1-8 GND=TB1-4

Calibrate ch2 0mA 0 CALIBRATING ——

Calibrate ch2 0mA *** DONE ***

Calibrate ch2 0mA Iin=TB1-8 GND=TB1-4

Calibrate ch2 20mA Iin=TB1-8 GND=TB1-4

Calibrate ch2 20mA 0 CALIBRATING ——

Calibrate ch2 20mA *** DONE ***

Calibrate ch2 20mA Iin=TB1-8 GND=TB1-4

Advance to

Calibrate ch1 0V

To Calibrate: Connect Current Source (+) TB1-8, (-) TB1-4. Input 0mA and press Enter.

This message is displayed during calibration.

This message is displayed when the 0mA calibration is finished.

The display will automatically return to the Calibrate CH2 0mA submenu. Press the Down arrow key to advance to the CH2 20mA calibration.

To Calibrate: Connect Current Source (+) TB1-8, (-) TB1-4. Input 20mA and press Enter.

This message is displayed during calibration.

This message is displayed when the 20mA calibration is finished.

The display will automatically return to the Calibrate CH2 20mA submenu. Press the Down arrow key to advance to the CH1 0V calibration.

ENTER

STOP

ENTER

STOP

Sub-menus Display Notes

FC-21 Flow Computer

Sub-menus Display Notes

Calibrate ch1 0V Vin=TB1-2 GND=TB1-4

Calibrate ch1 0V 0 CALIBRATING ——

Calibrate ch1 0V *** DONE ***

Calibrate ch1 0V Iin=TB1-2 GND=TB1-4

Calibrate ch1 10V Iin=TB1-2 GND=TB1-4

Calibrate ch1 10V 0 CALIBRATING ——

Calibrate ch1 10V *** DONE ***

Calibrate ch1 10V Iin=TB1-2 GND=TB1-4

Advance to

Calibrate ch2 0V

8.2.10 Calibrate CH1 0V Submenu Group

To Calibrate: Connect Voltage Source (+) TB1-2, (-) TB1-4. Input 0V and press Enter.

This message is displayed during calibration.

This message is displayed when the 0V calibration is finished.

The display will automatically return to the Calibrate CH1 0V submenu. Press the Down arrow key to advance to the CH1 10V calibration.

To Calibrate: Connect Voltage Source (+) TB1-2, (-) TB1-4. Input 10V and press Enter.

This message is displayed during calibration.

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 calibration.

ENTER

STOP

ENTER

STOP

8.2.11 Calibrate CH1 10V Submenu Group

FC-21 Flow Computer

Sub-menus Display Notes

8.2.12 Calibrate CH2 0V Submenu Group

Calibrate ch2 0V Vin=TB1-5 GND=TB1-4

Calibrate ch2 0V 0 CALIBRATING ——

Calibrate ch2 0V *** DONE ***

Calibrate ch2 0V Iin=TB1-5 GND=TB1-4

Calibrate ch2 10V Iin=TB1-5 GND=TB1-4

Calibrate ch2 10V 0 CALIBRATING ——

Calibrate ch2 10V *** DONE ***

Calibrate ch2 10V Iin=TB1-5 GND=TB1-4

Advance to

Calibrate 100ohm RTD

Calibrate 100ohm RTD JMP TB1-6,7 100R=7,8

Calibrate 100ohm RTD 0 CALIBRATING ——

Calibrate 100ohm RTD *** DONE ***

Calibrate 100ohm RTD JMP TB1-6,7 100R=7,8

Advance to

Calibrate 4mA out

8.2.13 Calibrate CH2 10V Submenu Group

To Calibrate: Connect Voltage Source (+) TB1-5, (-) TB1-4. Input 0V and press Enter.

This message is displayed during calibration.

This message is displayed when the 0V calibration is finished.

The display will automatically return to the Calibrate CH2 0V top-level menu. Press the Down arrow key to advance to the CH2 10V calibration.

To Calibrate: Connect Voltage Source (+) TB1-5, (-) TB1-4. Input 10V and press Enter.

This message is displayed during calibration.

This message is displayed when the 10V calibration is finished.

The display will automatically return to the Calibrate CH2 10V top-level menu. Press the Down arrow key to advance to the 100 ohm RTD calibration.

To Calibrate: Connect a jumper wire between TB1-6 and TB1-7, Place a 100 ohm 0.1% resistor between TB1-7 and TB1-8. Press enter to calibrate.

This message is displayed during calibration.

This message is displayed when the RTD calibration is finished.

The display will automatically return to the Calibrate 100 ohm RTD top-level menu. Press the Down arrow key to advance to the 4mA out calibration.

ENTER

STOP

ENTER

STOP

8.2.14 Calibrate 100 ohm RTD Submenu Group

ENTER

STOP

FC-21 Flow Computer

Sub-menus Display Notes

8.2.15 Calibrate 4mA Out Submenu Group

8.2.16 Calibrate 20mA Out Submenu Group

ENTER

STOP

ENTER

STOP

Calibrate 0mA out + TB1-15 - TB1-16

Calibrate 0mA out Enter mA: 0.00000

Calibrate 0mA out + TB1-15 - TB1-16

Calibrate 20mA out + TB1-15 - TB1-16

Calibrate 20mA out Enter mA: 20.00000

Calibrate 20mA out + TB1-15 - TB1-16

Calibrate

Analog In Test

Analog In Test Volts T2:00.000 T5:00.000

Analog In Test mA T3:00.000 T8:00.000

Analog In Test OHMS RTD 00.000

Analog In Test

Connect ammeter to (+) TB1-15, (-) TB1-16. Press enter.

To trim 0mA output: Press CLEAR to enable editing and enter a small negative number (i.e. -

0.100) to force a display reading, then clear and enter small quantity measured on your meter.

The display will return to Calibrate 0mA out. Press the down arrow key to advance to Cal. 20mA out or repeat above if necessary.

Connect ammeter to (+) TB1-15, (-) TB1-16. Press enter.

To trim 20mA output: Press CLEAR to enable editing and enter the current reading that is on the ammeter display. Press enter.

The display will automatically return to the Calibrate 20mA out submenu. Calibration is complete.

Press the Menu key to go back to Calibrate top-level menu.

Press enter to test the analog inputs.

To check voltage input accuracy: Use TB1-4 as Reference Ground, input 0-10 Volts to TB12 and/or TB1-5. Display should show voltage being input. Use voltage meter to verify input.

To check current input accuracy: Use TB1-4 as Reference Ground, input 0-20mA to TB1-3 and/or TB1-8. Display should show current being input. Use ammeter to verify input.

To check RTD input accuracy: Connect a jumper wire between TB1-6 and TB1-7, Place a 100 ohm 0.1% resistor between TB1-7 and TB1-8. Display should show 100 ohms ±0.1%.

Press Menu key to return to Analog In Test top-level menu.

8.2.17 Analog In Test Submenu Group

FC-21 Flow Computer

Sub-menus Display Notes

Pulse input test

Pulse input test Trigger level 2.5V

Pulse input test count speed 3kHz

Pulse input test F1: 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

Excitation out test

Press Enter key to test the pulse input.

Use the Up/Down arrow keys to select the appropriate trigger level.

Use the Up/Down arrow keys to select the appropriate frequency range.

To check Pulse input accuracy: Use TB1-4 as reference ground, input a frequency on TB1-2. The display should show frequency being input. Use a frequency counter to verify input.

Press Menu key to return to Pulse input test top-level menu.

Press Enter to test the analog output.

To simulate analog output: Connect an ammeter to (+) TB1-15, (-) TB1-16. Press the key under the desired setting to move the asterisk (*). The unit should output the selected current.

Press Menu key to return to Analog out test top-level menu.

Press Enter to test the excitation output.

To test the excitation output: Connect a voltmeter to (+) TB1-1, (-) TB1-4. Press the key under the desired setting to move the asterisk (*). The unit should output the selected voltage.

Press Menu key to return to Excitation out test top-level menu.

8.2.18 Pulse input test Submenu Group

ENTER

8.2.19 Analog out test Submenu Group

8.2.20 Excitation out test Submenu Group

ENTER

STOP

START

STOP

START

2.5V 10mV

100mV

40Hz 3KHz

20kHz

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

8.2.21 Pulse out test Submenu Group

ENTER

Press Enter key to test the pulse output.

To simulate a frequency on the pulse output: Connect a frequency counter to (+)TB1-13, (-)TB1-14. Press the key under the desired setting to move the asterisk (*). The unit should output the selected frequency.

Press Menu key to return to Pulse out test top-level menu.

Press Enter to test the relays.

To manually control the relay outputs: Press the key under the desired relay to toggle the relays On/Off. Use an ohmmeter to check the relay contacts.

Press Menu key to return to Relay Test toplevel menu.

Press Enter to test the control inputs.

To check the control inputs: Use TB1-12 as reference, input a DC signal to TB1-9, TB1-10 and/or TB1-11, The Display will show ON when input is active, OFF when inactive.

Press Menu key to return to control input test top-level menu.

ENTER

8.2.22 Relay test Submenu Group

ENTER

8.2.23 Control input test Submenu Group

FC-21 Flow Computer

Battery Voltage Test

3.312 Volts

Battery Voltage Test

Data logger utility

Data logger utility Log 10 958 Max

Data logger utility Log 00001 PRT CLR

Data logger utility

8.2.24 Battery Voltage test Submenu Group

8.2.25 Data logger utility Submenu Group

Press Enter key to view the battery voltage.

The display will show the battery voltage. Replace battery at 2.5 VDC or below.

Press Menu key to return to battery voltage test top-level menu.

Press Enter to use data logger utility.

The displays shows the number of Data Logs. Press the Down arrow key to advance to PRT (print) or CLR (clear).

Press PRINT key to output data logger logs to printer, Press CLEAR key to clear the data logger contents.

Press Menu key to return to Data logger utility top-level menu.

ENTER

STOP

Sub-menus Display Notes

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 all connections in place.

4. Remove the unit from the panel.

5. Remove the four machine screws (see fig. 1) which hold the two sections of the case together.

6. The rear section of the case should detach from the rest of the case. It may be necessary two cut the wiring label along the joint where the two sections connect. With the rear section of the case removed the fuse will be exposed (located near the rear terminal, AC connection).

7. Locate the Fuse F1 (see fig. 2) and unplug the fuse from its socket.

8. Insert the new fuse into the socket. Insure that the pins are fully inserted and straight.

9. Reassemble the case and install the four machine screws which join the two sections of the case.

10.Reinstall the unit into the panel.

11. Reconnect the rear terminal block.

12.Turn the unit back on.

Fuse Specifications:

110 VAC Power: 160mA/250V, TD Wickman 19372-030-k or equivalent 220 VAC Power: 80mA/250V, TD Wickman 19372-026-k or equivalent 12/24 VDC Power: 800mA/250V, TD Wickman 19374-046-k or equivalent

Screws (4 places)

fig. 1 fig. 2

FUSE

fuse

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

Configuration by Computer

Print System Setup

Print Calibration/Malfunction History

9.2 Instrument Setup by PC’s over Serial Port

A Diskette program is provided with the FC-21 that enables the user to rapidly configure the FC-21 using a Personal Computer. Included on the diskette are common instrument applications which may be used as a starting point for your application. This permits the user to have an excellent starting point and helps speed the user through the instrument setup.

9.3 Operation of Serial Communication Port with Printers

The system setup and maintenance report list all the instrument setup parameters and usage for the current instrument configuration. In addition, the Audit trail information is presented as well as a status report listing any observed malfunctions which have not been corrected.

The user initiates the printing of this report at a designated point in the menu by pressing the print key on the front panel.

The user may specify a “next calibration date” for periodic maintenance. The unit will automatically remind the user that calibration is scheduled during instrument power up and in some printed documents after that date.

9.4 FC-21 RS-232 Port Pinout

12345

6789

1 Handshake Line

2 Transmit

3 Receive

4 Do Not Use

5 Ground

6 Do Not Use

7 Do Not Use

8 Do Not Use

9 Do Not Use

12345678910111213141516171819202122

23 24

12345

6789

12345

6789

RS-232 RS-485

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 for any one of the following purposes:

Accessing Process Parameters

Rate, Temperatures, Density, Setpoints, Month, Day, Year, Hour, Minutes, Seconds, etc.

Accessing System Alarms

System, Process, Self Test, Service Test Errors

Accessing Totalizers

Totalizer and Grand Totalizer

Executing Various Action Routines

Reset Alarms, Reset Totalizers, Print Transaction, Reset Error History, Start, Stop, Clear

10.2 General

The optional RS-485 card utilizes Modbus RTU protocol to access a variety of process parameters and totalizers. In addition, action routines can be executed. For further information, contact factory and request RS-485 Protocol manual for FC-21.

10.3 Operation of Serial Communication Port with PC

The flow computer's RS-485 channel supports a number of Modbus RTU commands. Refer to port pinout (below) for wiring details. Modbus RTU drivers are available from third party sources for a variety of 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.

10.4 FC-21 RS-485 Port Pinout

1 Ground

2 Ground

3 Ground

4 TX/RX (+)

5 TX/RX (-)

6 Do Not Use

7 Terminating Resistor (180 Ω)

8 TX/RX (+)

9 TX/RX (-)

12345

6789

12345678910111213141516171819202122

23 24

12345

6789

12345

6789

RS-232 RS-485

FC-21 Flow Computer

11. Flow Computer Setup Software

The FC-21 setup program provides for configuring, monitoring and controlling a FC21 unit.

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

a file).

The program can monitor outputs from the unit while it is running.

The program can reset alarms and totalizers.

For assistance there are mini-helps at the bottom of each screen in the program. There is also context sensitive help available for each screen accessible by pressing the F1 key.

11.1 System Requirements:

IBM PC or compatible with 386 or higher class microprocessor

4 MB RAM

3 MB free disk space

VGA or higher color monitor at 640 x 480

Microsoft® Windows™ 3.1 or 3.11 or Windows 95™

Communication Port - RS-232

RS-232 Cable

11.2 Cable and Wiring Requirements:

The serial communication port on your PC is either a 25 pin or 9 pin connector. No cabling is supplied with the setup software. A cable must be purchased separately or made by the user. It is recommended to purchase a modem cable which matches the available communication port on you PC and a 9 pin male connection for the FC21 serial port.

11.3 Installation for Windows™ 3.1 or 3.11

The Setup Software includes an installation program which copies the software to your hard drive.

Insert Setup Disk 1 in a floppy drive.

In the Program Manager, click File, and then select Run.

NOTE: For Windows 95™ Click the Start button, select Run and proceed

as follows:

Type the floppy drive letter followed by a colon (:) and a backslash (\), and the word setup. For Example:

a:\setup

Follow the instructions on your screen.

FC-21 Flow Computer

11.4 Using the Flow Computer Setup Software

The setup software window consists of several menu “Tabs”. Each tab is organized into groups containing various configuration and/or monitoring functions. To view the tab windows, simply click on the tab. The previous tab window will be hidden as the new tab window is brought to the foreground.

11.5 File Tab

The File Tab has three sections. Any of the options on this tab can also be accessed from the File submenu.

The Template Section provides for opening and saving templates. The

Save

and

Save As

buttons provide the standard Windows functionality for dealing with files.

The Load button is used to open existing templates.

There are two additional menu items available

only

from the File menu: Create new

file and Templates.

The

Create new file

, option allows for creating custom templates using the existing template in memory as the starting point. Assign a new name for this template. The template will be saved under this new name.

The

Template

option will bring up a list of predefined templates that can be loaded into the program. These predefined templates are useful as a starting point when defining custom templates.

A typical scenario using the setup program would be the following:

• Open up a predefined template from the supplied list

• Choose ‘Save As’ to save this to a new file name

• Proceed to customize the template by making any changes that are needed

• 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.

The Print (report) Section allows the user to:

1. Configure the current Windows printer through the Select Printer option.

2. Print a Maintenance Report through the PC's printer using the Print Maintenance option.

3. Print the current template through the PC's printer using Print Setup option.

11.6 Setup Tab

The Setup tab is where majority of the FC-21 instrument setup modifications are done. The Setup tab is divided into five sections.

System Section: Parameters, Display, Indicators

Input Section: Flow, Fluid, Compensations, Control Inputs

Output Section: Pulse, Currents

Relay Section: Relays

Other Settings Section: Administration, Communication, Printing

NOTE: Many setup items are enabled or disabled depending on previous setup

selections, It is important to work your way through the above list in the order shown. Be sure to verify your selections when you are through programming to insure that no settings were changed automatically.

FC-21 Flow Computer

11.7 View Tab

The View Tab screen allows for viewing selected group items on the PC in a similar format as shown on the unit display. Data from the following groups can be viewed in the List of Values section:

Process Parameters (i.e. rate, temperature)

Totalizers (i.e. total, grand total)

The setup software assumes the current setup has been uploaded from the flow computer into the PC. It is important that the setup program and the FC-21 unit are using the same setup information at all times or the data will be inconsistent. It is best to upload or download the setup before using this feature.

To start the viewer, first check the boxes of items to view and then click the start button. The data will appear in the appropriate sections and will be continuously updated. The refresh rate is dependent on the number of items that are being viewed and the baud rate of the connection. Data in the List of Values section can be collapsed by clicking on the ‘minus’ sign in front of the group title. The data can be expanded by clicking on the ‘plus’ sign in front of the group title. If a group is collapsed and data in the group changes on refresh, the group will automatically expand. Changing the view items requires stopping the current viewing, checking the new selections and then restarting the viewer.

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.

The viewer will attempt to communicate with the FC-21 device matching the device ID set in the communications screen. If you are having trouble establishing communication, compare settings for the PC and the flow computer. Also verify the connections between the PC and flow computer.

11.8 Misc. Tab

This tab has three sections: Tools, Actions and Options.

The tools section contains various system administration activities such as creating/ modifying the initial sign-on screen or calibration, service test etc.

Create Sign-on, Create Print Header, Calibration, Service Test

The Actions section is used to send commands to the FC-21 unit.

Reset Totalizers, Reset Alarms

The Options section has the following selections:

Linearization, PC Communication

Additional capabilities may be provided in the future.

NOTE: Future options appear as disabled buttons on the screen.

FC-21 Flow Computer

Acknowledge & Clear Alarms

Acknowledge is used to clear alarm relays and remove any visual alarm messages from the display. In the run mode, press the ENTER key or activate CONTROL INPUT 3 (if set for ACK) to momentarily clear alarms and alarm messages. 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.

Audit Trail

The audit trail is used to track the number of changes made to the units setup program.

Auto Batch Restart

The Auto Batch Restart function allows the user to set an amount of time to automatically restart a batch after the completion of a batch. This time can be set from 1 to 99 seconds.

Batch Count Mode

Batch Count Mode specifies the user preference for count direction. The "Up" selection begins with a value of "0" and counts up until the batch size is reached. The "Down" selection begins with a value equal to the desired batch size and counts down to "0".

Batch Overrun

The FC-21 offers a batch overrun compensation routine. If batch overrun occurs due to slow valve response time, the unit will compensate for the overrun amount on the next batch. This feature can be disabled if desired.

Batcher

An instrument which controls the dispensing of desired batch amounts. Liquid batching systems are usually comprised of a batch controller (batcher), flowmeter and control valve. The batcher opens and closes the valve through the use of relays and measures the amounts of liquid being dispensed via the flowmeter.

Baud Rate

The speed of serial communication transmissions, expressed in bits per second.

C-Factor (Fluid Expansion Factor)

A parameter in a flow equation which is used to describe the relationship between density or volume and temperature changes.

Corrected Volume Flow

The equivalently volume at a reference temperature condition which involves the measurement of liquid volume flow using a flow sensor and temperature sensor to compensate for thermal expansion.

Custody Transfer

Weights and Measure metering codes often specify several requirements for instruments and mechanisms to prevent and track changes in the setup of an instrument which may be used in the commercial sale of goods. The FC-21 tracks changes via the Audit Trail.

Data Logger

The capturing of information for later use and the mechanism for specifying the conditions where a capture should be made.

DC Output / Excitation Voltage

An on-board DC power supply used to power peripheral sensors. The FC-21 offers excitation voltages of 5VDC, 12VDC or 24VDC when powered by AC voltage.

Default Value

The value to be used by the instrument if a sensor failure or out of ranch signal is detected.

Expansion Factor

See C-Factor

Flow Alarm

A visual indication that the volumetric flowrate is above or below the flow alarm setpoint specified by the user.

12. Glossary Of Terms

FC-21 Flow Computer

Flow Signal Timeout

Flow Equation

A flow control expression or algorithm describing a mathematical equation to be solved by a flow computer in the desired application.

Follow, Alarm

Alarm relays which are non latching and whose output state is based solely on the comparison of the current process value and the alarm setpoint (trip point).

Function Key

A key on a push-button panel or keyboard (whose function is described by the key label) used to perform an instrument function or special routine.

Handshake

A means of controlling the information flow between two pieces of equipment to prevent the sending device from transmitting information at a rate faster than what can be accepted by the receiver.

Hysteresis

The relay hysteresis is a "dead band" setting which allows the relay to remain energized for a given amount below the setpoint. This is used to prevent relay chatter when the process value is near the setpoint value. Example: If the Preset is set at 100, and the hysteresis is set at 10, the relay will energize when the rate, temp or dens. reaches 100, the relay will remain energized until the reading falls below 90.

Input Termination

Input signal lines on digital inputs often require pullup or pulldown resistor configurations to operate properly with different sensor configurations. The FC-21 contains such resistors and may be enabled via the setup menu.

Inhibit Totalizer

"Inhibit Total" is a Control Input 1 setting that is used to stop the totalization. If enabled, a voltage level on control input 1 will inhibit the total as long as the voltage is present. This feature is useful during meter proving and in applications that provide a sensor to signal the flow computer when fluid is present.

K-Factor

A scaling factor derived from the pulses produced by a flowmeter output, expressed in pulses per unit (i.e. pulses/gallon)

LCD

Abbreviation for: Liquid Crystal Display

Limit Setpoint

An alarm trip point setting which specifies the value or magnitude of a process parameter necessary to activate an alarm indicator or control relay.

Linear Flowmeter

A flow measurement device whose output is proportional to flow.

Linearization

The mathematical correction of a nonlinear device. The FC-21 uses a linearization Table which is made up of input/output values and makes interpolations of the table to arrive at a "linearized" measurement.

LinTbl

Abbreviation for Linearization Table.

Low Flow Cutoff

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).

Mass Flow

12. Glossary Of Terms (Continued)

FC-21 Flow Computer

Mass Flow is inferred by the volumetric flow and density (or implied density) of a fluid.

Maximum Batch Preset

Maximum Drain Time

Max Window

The max. window time sets the maximum sample time (1 to 99 sec) for the ratemeter.

Modem Init Master

The "Modem Init Master" menu allows the user to select whether the unit will engage in a configuration conversation with the modem on power up or impart no setup information to the modem and use it "as is". For most users it is recommended to choose "yes" for "Modem Init Master".

Orifice Plate Flowmeter

A class of flow measurement devices where the measured signal (differential pressure) has a square law relationship to flow.

Parity

A method for detecting errors in transmissions of serial communications data.

Preset

A set point used to trigger the relay outputs of the FC-21.

Print Interval

The print interval allows the FC-21 to transmit information to the serial port at selectable time intervals.

Private Code

An operator password code which authorizes changes to the setup of the instrument but blocks access to the Service/Calibration/Test mode. The private code also blocks the clearing of the Grand Total.

Process Parameters

Any sensor information which has been scaled to engineering units including Flow, Temperature and Density.

Pulldown (Input Termination)

The termination of an input at which the input is pulled down to ground through a resistor. Inputs that are terminated by this method need to be driven high with a positive voltage pulse.

Pullup (Input Termination)

The termination of an input at which the input is pulled up to a positive voltage through a resistor. 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. Quadrature signals are used for direction control. Two flowmeter signals are output with a 90° phase shift. The counter counts UP when channel A precedes channel B, and counts DOWN when Channel A lags Channel B.

Quick Setup

A utility that provides for rapid configuration of an instrument. The FC-21 quick setup provides the

12. Glossary Of Terms (Continued)

FC-21 Flow Computer

following:

1) Prompts the user for only critical information.

2) Automatically sets specifications to common uses. After following the Quick Setup procedure, the unit will be operational to perform the basic measurement. The setup can be further customized using the setup menus.

Quick Update %

This feature is used to disable the rate averaging filter when a significant change in the flow rate occurs. The user can enter the percent of change needed to be detected to disable the averaging feature. This is especially useful during start-up and shutdown of flow.

Rate Averaging Filter

The rate averaging filter is used to stabilize fluctuating rate displays. Higher settings provide more averaging for a more stable display. Derived from the equation:

(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.

Ref. Temp.

Abbreviation for Reference Temperature. This represents the base or reference condition to which corrected flow will be computed.

Reset/Start Control Input

In a batching system, a single operator activation of the START key or Control Input 1 will reset the total then start the batch process.

Single_Pulse

The Single_Pulse setting is used for flowmeters with single pulse outputs.

Slow Start Quantity

Sqrt

Abbreviation for Square Root Extraction. Used for flow elements using differential pressure measurements.

Stop/Reset Control Input

In a batching system, a single operator activation of the STOP key or Control Input 2 will stop the batch process then reset the total.

Time Constant

A damping factor for an averaging filter for the analog output. (see also Rate Averaging Filter)

Totalizer

Any device which accumulates and displays a total count.

UVC

Abbreviation for Universal Viscosity Curve. A presentation of the combined flowrate/viscosity calibration for a turbine flowmeter.

VFD

Abbreviation for Vacuum Fluorescent Display

Visc Coef

Abbreviation for Viscosity Coefficient. One or more coefficients in an equation used to describe the viscosity as a function of temperature for a fluid.

Volume Flow

The measurement of volumetric flow.

12. Glossary Of Terms (Continued)

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 sensor

failure or process alarm conditions

Self Test Errors Errors detected during self test.

System Alarms Errors detected due to system

failure

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:

Some alarms are self clearing. Other alarms require the user to acknowledge and clear the alarm. Press the ENTER button to acknowledged and clear alarms. Alarms may reassert themselves if the alarm condition is still present.

NOTE: A historical error alarm log is available in the "Test Mode".

The following descriptions suggest possible causes and corrective actions for each alarm message.

FC-21 Flow Computer

13.2 Diagnosis Flow Chart and Troubleshooting

Is there an input power supply voltage across Terminals 23 and 24?

Yes

Check the connections according to the circuit diagrams.

Check junction box fuses.

Is the Display Backlight Visible?

Yes

Check/Replace internal fuse. If fuse is OK, Factory Service Required.

Is there a black bar across the display?

Yes

Does the display alternate between blank and sign on message?

Yes

Does the display show an error message?

Yes

See section 12.3 for cause and remedy.

No system or process errors present.

Are the Display Characters Visible?

Yes

The display may not be visible with ambient temperatures below -10 °C Allow the instrument to warm up. Contact factory if necessary

Check line voltage. If voltage is OK, Factory Service Required.

All instruments undergo various stages of quality control during production. 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.

FC-21 Flow Computer

Cause

Displayed when totalizer rolls over

4-20 mA Input current at aux input smaller than 3.5 mA:

• Faulty Wiring

• Transmitter not set to "4-20 mA"

• Transmitter defective

Input current at RTD input too low:

• Faulty wiring

• RTD defective

Pulse counter overflowed. The totalizer may have lost counts.

Calculated pulse frequency too large:

• Pulse width setting too long

• Larger pulse scaler needed

Limit value exceeded.

Batch size exceeded by more than set limit.

The setup expects modem usage and a modem is not responding.

Unit was operated with an input power level lower than safe operating range for an extended period of time.

13.3 Error & Warning Messages:

Remedy

Acknowledge Rollover, Remedy not required

• Check wiring

• Check function of sensor

• Check wiring

• Check function of RTD sensor

• Report error to factory

• Check application conditions

• Check wiring

• Adjust pulse value

• Adjust pulse width

• Check process conditions

• Check application if necessary

• Check limit value

• Adjust the limit value if required

• Check valves in system for proper operation and/or leaks

• Check limit value

• Adjust the limit value if required

• Check setup for proper baud rate, parity, etc.

• Check modem connection and cycle power to SUPERtrol

• Replace modem

• Check setup for proper baud rate, parity, etc.

• Check modem connection and cycle power to SUPERtrol

• Replace modem

• Check data in unit. Totalizer may have inaccuracies

• Investigate brownout cause.

Error/Warning Message

TOTALIZER ROLLOVER

AUX INPUT TOO LOW

RTD OUT OF RANGE

RATE OVERFLOW ERROR

PULSE OUT OVERFLOW

FLOW RATE ALARM LOW FLOW RATE ALARM HIGH

TEMP ALARM LOW TEMP ALARM HIGH

DENSITY ALARM LOW DENSITY ALARM HIGH

BATCH OVERRUN ALARM

MODEM NOT PRESENT

SOFTWARE ERROR RESET

EXTENDED PFI LOCKUP

13.3.1 Sensor/Process Alarms

FC-21 Flow Computer

13.3 Error & Warning Messages: (Continued)

Cause

Analog input signal of the flow input exceeded by more than 3%:

• Sensor overranged

• Incorrect full scale setting of flowmeter

• Function error in transmitter or faulty wiring

Analog input signal of the auxiliary input exceeded by more than 3%:

• Sensor overranged

• Incorrect full scale setting of transmitter

• Function error in transmitter or faulty wiring

Analog input signal of the flow input fell below the low scale range by more than 3% of full scale value:

• Flowmeter not set to 4-20 mA

• Function error in transmitter or faulty wiring

Battery voltage too low

Fault in analog/digital converter

The correct time/date is no longer shown

Calibration constants have been corrupted

The units setup has been corrupted

Remedy

• Check analog signal range

• Check the application conditions

• Check wiring

• Check analog signal range

• Check the application conditions

• Check wiring

• Check calibration of flowmeter

• Check function of flowmeter

• Replace Battery

• Consult Factory for service information

• Unit may self correct, Press ENTER to acknowledge & clear alarm

• If error reasserts, factory service is required

• Re-enter time and date.

• If error occurs again contact factory

• Report error to factory

Error/Warning Message

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

SETUP CHECKSUM ERROR

13.3.2 Self Test Alarms

FC-21 Flow Computer

AUX INPUT

TYPE

VOLTAGE/

CURRENT

RANGE

AUX. DEFAULT

AUX LOW

SCALE

DENS

EXTRACT

METHOD

SETUP AUX INPUT

AUX SIGNAL

TYPE

AUX HIGH

ALARM

AUX FULL

SCALE

SETUP

INDICATORS

TOTAL

DESCRIPTOR

VOLUME

UNITS

TOTAL

DECIMAL

PLACES

DENSITY

DESCRIPTOR

MASS UNITS

DENSITY

DECIMAL

PLACES

RATE TIME

BASE

RATE

DESCRIPTOR

RATE DECIMAL

PLACES

RATE

AVERAGE

FILTER

QUICK

UPDATE %

TEMP

DESCRIPTOR

TEMPERATURE

SCALE

EXCITATION

VOLTAGE

PULSE INPUT

TYPE

PULSE

TRIGGER

TYPE

LOW PASS

FILTER

INPUT

TERMINATION

MAX WINDOW K-FACTOR

TYPE

AVERAGE

KA-FACTOR

INSTRUMENT

TYPE

BATCH COUNT

MODE

MAX. BATCH

PRESET

BATCH

OVERRUN

COMP.

AUTO BATCH

RESTART

SELECT FLOW

EQUATION

REF. DENSITY REF.

TEMPERATURE

EXPANSION

FACTOR

SERIAL

HARDWARE

DEVICE ID BAUD RATE

PARITY HANDSHAKE DEVICE LINE

FEED

OPERATOR

PASSWORD

SUPERVISOR

PASSWORD

SOFTWARE

VERSION

INSTRUMENT

TYPE

ADMINISTRATIVE

SETUP

SERIAL USAGE

SETUP PULSE

OUTPUT

SET FLUID

PROPERTIES

SETUP FLOW INPUT

SETUP INDICATORS

SELECT FLOW

EQUATION

PRODUCT

ORDER CODE

UNIT

SERIAL

NUMBER

SENSOR

SERIAL

NUMBER

SETUP MENUS

These functions will only appear with

appropriate settings in other functions.

SETUP

RELAYS

1, 2, 3, 4

RELAY

DURATION

RELAY

SETPOINT

RELAY USAGE

RELAY

DELAY

SETUP RELAYS

RELAY

HYSTERESIS

RELAY MODE

SETUP REAL

TIME CLOCK

ENTER DATE

SELECT

CLOCK AM/PM

TIME OF DAY

SETUP REAL TIME

CLOCK

MODEM

CONTROL

CALL ON

ERROR/

ALARM

NUMBER OF

REDIALS

HANGUP IF

2MIN.

INACTIVE

MODEM AUTO

ANSWER

CALL OUT NO

START HERE

TEMPERATURE

DECIMAL

PLACES

AVERAGE

KB-FACTOR

CHANGE

TABLE A

CHANGE

TABLE B

LOW FLOW

RATE ALARM

HIGH FLOW

RATE ALARM

VISCOSITY

COEF. A

VISCOSITY

COEF. B

PULSE OUPUT

USAGE

PULSE WIDTH PULSE VALUE

ANALOG

OUPUT USAGE

ANALOG OUT

LOW SCALE

ANALOG OUT

FULL SCALE

ANALOG OUT

DAMPING

SETUP ANALOG

OUTPUT

ANALOG

OUTPUT

RANGE

CONTROL

INPUT 1

USAGE

CONTROL

INPUT 2

USAGE

CONTROL

INPUT 3

USAGE

SETUP CONTROL

INPUTS

SETUP

CONTROL

INPUTS

1, 2, 3

CLOCK TYPE

CALL OUT

TIME

SETUP

DATALOG/

OUTPUT

FORMAT

PAGE LENGTH TOP MARGIN

CLEAR TOTAL

IF PRINT

PRINT LIST

ITEMS

SETUP

DATALOG/PRINT

DATALOG

ONLY

PRINT TIME

INTERVAL

ENABLE PRINT

KEY

TIME DELAY

AUX LOW

ALARM

H2O DENSITY

AT 4DEGC

ANALOG OUT

FLOW TYPE

SELECT

NETWORK

PROTOCOL

NETWORK

DEVICE ID

BAUD RATE

PARITY

SETUP NETWORK

CARD

FLOW

INPUT

TYPE

ANALOG

INPUT TYPE

VOLTAGE/

CURRENT

RANGE

LINEARIZATION

TYPE

CHANGE

TABLE A

LOW FLOW

CUTOFF

LOW FLOW

RATE ALARM

HIGH FLOW

RATE ALARM

PRINT END OF

BATCH

FLOW LOW

SCALE

FLOW HIGH

SCALE

CALIBRATION

DENSITY

SELECT

EZ SETUP

APPENDIX A

WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period 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 time. This ensures that OMEGA’s customers receive maximum coverage on each product.

If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service 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. This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive corrosion; or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating conditions outside of OMEGA’s control. Components which wear are not warranted, including but not limited to contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by it will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESS OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of OMEGA with respect to this order, whether based on contract, warranty, negligence, indemnification, strict liability or otherwise, shall not exceed the purchase price of the component upon which liability is based. In no event shall OMEGA be liable for consequential, incidental or special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should any Product(s) be used in or with any nuclear installation or activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility as set forth in our basic WARRANTY/ DISCLAIMER language, and, additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product(s) in such a manner.

RETURN REQUESTS/INQUIRIES

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR number should then be marked on the outside of the return package and on any correspondence.

The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in transit.

FOR W following information available BEFORE contacting OMEGA:

1. Purchase Order number under which the product

2. Model and serial number of the product under

3. Repair instructions and/or specific problems

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our customers the latest in technology and engineering.

reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior written consent of OMEGA ENGINEERING, INC.

ARRANTY RETURNS, please have the

was PURCHASED,

warranty, and

relative to the product.

FOR NON-WARRANTY REPAIRS,

consult OMEGA for current repair charges. Have the following information available BEFORE contacting OMEGA:

1. Purchase Order number to cover the COST

of the repair,

2. Model and serial number of the product, and

3. Repair instructions and/or specific problems

relative to the product.

OMEGAnet®Online Service Internet e-mail

www.omega.com info@omega.com

Servicing North America:

USA: One Omega Drive, P.O. Box 4047

ISO 9001 Certified Stamford CT 06907-0047

TEL: (203) 359-1660 FAX: (203) 359-7700 e-mail: info@omega.com

Canada: 976 Bergar

Laval (Quebec) H7L 5A1 TEL: (514) 856-6928 FAX: (514) 856-6886 e-mail: info@omega.ca

For immediate technical or application assistance:

USA and Canada: Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA

Customer Service: 1-800-622-2378 / 1-800-622-BEST Engineering Service: 1-800-872-9436 / 1-800-USA-WHEN TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA

Mexico: En Espan˜ol: (001) 203-359-7803 e-mail: espanol@omega.com

FAX: (001) 203-359-7807 info@omega.com.mx

Servicing Europe:

Benelux: Postbus 8034, 1180 LA Amstelveen, The Netherlands

TEL: +31 (0)20 3472121 FAX: +31 (0)20 6434643 Toll Free in Benelux: 0800 0993344 e-mail: sales@omegaeng.nl

Czech Republic: Rudé armády 1868, 733 01 Karviná 8

TEL: +420 (0)69 6311899 FAX: +420 (0)69 6311114 Toll Free: 0800-1-66342 e-mail: czech@omega.com

France: 9, rue Denis Papin, 78190 Trappes

TEL: +33 (0)130 621 400 FAX: +33 (0)130 699 120 Toll Free in France: 0800-4-06342 e-mail: sales@omega.fr

Germany/Austria: Daimlerstrasse 26, D-75392 Deckenpfronn, Germany

TEL: +49 (0)7056 9398-0 FAX: +49 (0)7056 9398-29 Toll Free in Germany: 0800 639 7678 e-mail: info@omega.dl

United Kingdom: One Omega Drive, River Bend Technology Centre

ISO 9002 Certified Northbank, Irlam, Manchester

M44 5BD United Kingdom TEL: +44 (0)161 777 6611 FAX: +44 (0)161 777 6622 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.

The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. accepts no liability for any errors it contains, and reserves the right to alter specifications without notice. WARNING: These products are not designed for use in, and should not be used for, patient-connected applications.

Omega FC-21 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual