Omega Products FMA6600 Installation Manual

User’s Guide
FMA6600 and FMA6700
Multi-Parameter
Digital Mass Flow Meters
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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.
TABLE OF CONTENTS
1. UNPACKING THE FMA6600/6700 DIGITAL MASS FLOW METER...........
1.1 Inspect Package for External Damage........................................................
1.2 Unpack the Digital Mass Flow Meter..............................................................
1.3 Returning Merchandise for Repair..............................................................
2. INSTALLATION.....................................................................
2.1 Primary Gas Connections...........................................................................
2.2 Electrical Connections................................................................................
2.2.1 Power Supply Connections........................................................................
2.2.2 Output Signals Connections.......................................................................
2.2.3 Output Communication Parameters and Connections................................
3. PRINCIPLE OF OPERATION......................................................
4. SPECIFICATIONS..................................................................
4.1 CE Compliance...........................................................................................
5. OPERATING INSTRUCTIONS.....................................................
5.1 Preparation and Warm Up..........................................................................
5.2 Swamping Condition....................................................................................
5.3 Programming FMA6600/6700 using LCD and Keypad................................
5.3.1 Changing Units of Measurement for Temperature & Pressure Reading.....
5.3.2 Monitoring FMA6600/6700 peripheries settings............................................
5.3.3 FMA6600/6700 Main Menu...........................................................................
5.3.4 Gas Flow Engineering Units Settings..........................................................
5.3.5 Gas Table Settings......................................................................................
5.3.6 Totalizer Settings........................................................................................
5.3.7 Alarm Settings...........................................................................................
5.3.8 Relay Assignment Settings........................................................................
5.3.9 K Factors Settings.....................................................................................
5.3.10 Zero Calibration..........................................................................................
5.3.11 Flow Conditions Settings...........................................................................
5.3.12 LCD Backlit Energy-saving Setting............................................................
5.4 Flow, Temperature, Pressure Output Signals Configuration......................
6. MAINTENANCE....................................................................
6.1 Introduction................................................................................................
6.2 Flow Path Cleaning....................................................................................
6.2.1 Restrictor Flow Element (RFE)..................................................................
6.2.2 Meters up to 10 LPM................................................................................
6.2.3 Meters 15 SLPM to 50 SLPM and Meters greater than 50 SLPM............
1
1 1 1
1
1 2 2 3 4
6
7
9
12
12 12 13 13 13 14 15 17 18 20 22 24 24 26 27 27
28
28 29 29 29 30
7. CALIBRATION PROCEDURES..................................................
7.1 Flow Calibration........................................................................................
7.2 Gas Flow Calibration of FMA6600/6700 Digital Mass Flow Meters..........
7.2.1 Connections and Initial Warm Up.............................................................
7.2.2 ZERO Check/Adjustment..........................................................................
7.2.3 Gas Linearization Table Adjustment.........................................................
7.3 Analog output Calibration of FMA6600/6700 Digital Mass Flow Meters.....
7.3.1 Initial Setup..............................................................................................
7.3.2 Gas flow 0-5 Vdc analog output calibration.............................................
7.3.3 Gas flow 4-20 mA analog output calibration............................................
7.3.4 Gas temperature 0-5 Vdc analog output calibration (FMA6700 Meters).....
7.3.5 Gas temperature 4-20 mA analog output calibration (FMA6700 Meters)....
7.3.6 Gas pressure 0-5 Vdc analog output calibration (FMA6700 Meters).......
7.3.7 Gas pressure 4-20 mA analog output calibration (FMA6700 Meters)......
7.4 Temperature or/and Pressure sensor Calibration.....................................
8. RS485/RS232 SOFTWARE INTERFACE COMMANDS.....................
8.1 General.....................................................................................................
8.2 Commands Structure...............................................................................
8.3 ASCII Commands Set...............................................................................
9. TROUBLESHOOTING............................................................
9.1 Common Conditions................................................................................
9.2 Troubleshooting Guide.............................................................................
9.3 Technical Assistance................................................................................
10. CALIBRATION CONVERSIONS FROM REFERENCE GASES................
APPENDIX I OMEGA FMA6600/6700 EEPROM Variables....................................
APPENDIX II INTERNAL USER SELECTABLE GAS FACTOR TABLE......................
(INTERNAL "K" FACTORS)
APPENDIX III GAS FACTOR TABLE ("K" FACTORS)................................................
APPENDIX IV COMPONENT DIAGRAM..................................................................
APPENDIX V DIMENSIONAL DRAWINGS.............................................................
APPENDIX VI WARRANTY.....................................................................................
30
30 31 31 31 31 33 34 35 35 35 36 36 37 37
37
37 38 40
46
46 47 49
49
50 53
54 58 62 64
1. UNPACKING THE FMA6600/6700 DIGITAL MASS FLOW METER
1.1 Inspect Package for External Damage
Your FMA6600/6700 Digital Mass Flow Meter was carefully packed in a sturdy cardboard carton, with anti-static cushioning materials to withstand shipping shock. Upon receipt, inspect the package for possible external damage. In case of external damage to the package contact the shipping company immediately.
1.2 Unpack the Digital Mass Flow Meter
Open the carton carefully from the top and inspect for any sign of concealed ship­ping damage. In addition to contacting the shipping carrier please forward a copy of any damage report to Omega7. When unpacking the instrument please make sure that you have all the items indicated on the Packing List. Please report any shortages promptly.
1.3 Returning Merchandise for Repair
Please contact an Omega7 customer service representative at 1-800-872-9436 (extension 2208), and request a Return Authorization Number (AR). Equipment returned without an AR will not be accepted. Omega7 reserves the right to charge a fee to the customer for equipment returned under warranty claims if the instru­ments are tested to be free from warrantied defects. Shipping charges are borne by the customer. Meters returned "collect" will not be accepted! It is mandatory that any equipment returned for servicing be purged and neutralized of any dangerous con­tents including but not limited to toxic, bacterially infectious, corrosive or radioac­tive substances. No work shall be performed on a returned product unless the cus­tomer submits a fully executed, signed SAFETY CERTIFICATE. Please request form from the Service Manager.
2. INSTALLATION
2.1 Primary Gas Connections
Please note that the FMA6600/6700 Digital Mass Flow Meter will not operate with liquids. Only clean gases are allowed to be introduced into the instrument. If gases are contaminated they must be filtered to prevent the introduction of impediments into the sensor.
Caution: FMA6600/6700 transducers should not be used for monitoring OXYGEN gas unless specifically cleaned and prepared for such application.
1
2
Attitude limit of Digital Mass Flow Meter is ±15deg from calibration position (stan­dard calibration is in horizontal position). This means that the gas flow path of the Flow Meter must be within this limit in order to maintain the original calibration accuracy. Should there be need for a different orientation of the meter, re-calibra­tion may be necessary. It is also preferable to install the FMA6600/6700 trans­ducer in a stable environment, free of frequent and sudden temperature changes, high moisture, and drafts.
Prior to connecting gas lines inspect all parts of the piping system including fer­rules and fittings for dust or other contaminants. Be sure to observe the direction of gas flow as indicated by the arrow on the front of the meter when connecting the gas system to be monitored. Insert tubing into the compression fittings until the ends of the properly sized tubing home flush against the shoulders of the fit­tings. Compression fittings are to be tightened according to the manufacturer's instructions to one and one quarter turns. Avoid over tightening which will seri­ously damage the Restrictor Flow Elements (RFE's)!
Caution: For FMA6700 (Multi Parameter versions) the maximum pressure in the gas line should not exceed 100 PSIA (6.8 bars). Applying pressure above 100 PSIA (6.8 bars) for extended periods of time will seriously damage the pressure sensor. Burst pressure is 200 PSIA (13.6 bar)!
FMA6600/6700 transducers are supplied with standard 1/4 inch (50 LPM or less) or 3/8 inch (60 LPM or greater), or optional 1/8 inch inlet and outlet compression fittings which should not be removed unless the meter is being cleaned or cali­brated for a new flow range.
Using a Helium Leak Detector or other equivalent method perform a thorough leak test of the entire system. (All FMA6600/6700's are checked prior to shipment for leakage within stated limits. See specifications in this manual.)
2.2 Electrical Connections
FMA6600/6700 is supplied with a 25 pin "D" connector. Pin diagram is presented in figure b-1.
2.2.1 Power Supply Connections
FMA6600/6700 transducers are supplied for three different power supply options:
±15Vdc (bipolar power supply)
DC Power (+) --------------- pin 1 of the 25 pin "D" connector DC Power Common --------------- pin 18 of the 25 pin "D" connector DC Power (-) --------------- pin 14 of the 25 pin "D" connector
3
+12Vdc or +24Vdc (unipolar power supply)
DC Power (+) --------------- pin 1 of the 25 pin "D" connector DC Power (-) --------------- pin 18 of the 25 pin "D" connector
Caution: DO NOT CONNECT 24Vdc POWER SUPPLY UNLESS YOUR FMA6600/6700 METER WAS ORDERED AND CONFIGURED FOR 24Vdc! (See power requirements label at the rear of the FMA6600/6700 meter)
2.2.2 Output Signals Connections
Caution: When connecting the load to the output terminals, do not exceed the rated values shown in the specifications. Failure to do so might cause damage to this device. Be sure to check that the wiring and the polarity of the power supply is correct before turning the power ON. Wiring error may cause damage or faulty operation.
FMA6600/6700 series Digital Mass Flow Meters are equipped with either calibrat­ed 0-5 VDC (0-10 VDC optional) or calibrated 4-20 mA output signals (jumper selectable). This linear output signal represents 0-100% of the flow meter's full scale range. Multi Parameter versions (FMA6700 Series) are in addition equipped with either a calibrated 0-5 VDC (0-10VDC optional) or a calibrated 4-20 mA out­put signal (jumper selectable) for pressure and temperature. Pressure linear out­put signal represents 0-100PSIA (46.9 kPa). Temperature linear output signal rep­resents 0-50
F
C.
Warning: All 4-20 mA current loop outputs are self-powered (non-isolated). Do not connect an external voltage source to the output signals!
Flow 0-5 VDC or 4-20 mA output signal connection:
Plus (+) ------------------- pin 2 of the 25 pin "D" connector Minus (-) ------------------- pin 15 of the 25 pin "D" connector
Temperature 0-5 VDC or 4-20 mA output signal connection (For FMA6700 Series only):
Plus (+) -------------------- pin 3 of the 25 pin "D" connector Minus (-) -------------------- pin 16 of the 25 pin "D" connector
Pressure 0-5 VDC or 4-20 mA output signal connection (For FMA6700 Series only):
Plus (+) -------------------- pin 4 of the 25 pin "D" connector Minus (-) -------------------- pin 17 of the 25 pin "D" connector
To eliminate the possibility of noise interference, use a separate cable entry for the DC power and signal lines.
4
2.2.3 Communication Parameters and Connections
The digital interface operates via RS485 (optional RS232 is available) and pro­vides access to applicable internal data including: flow, temperature, pressure reading, auto zero, totalizer and alarm settings, gas table, conversion factors and engineering units selection, dynamic response compensation and linearization table adjustment.
Communication Settings:
Baud rate: ------------------- 9600 baud Stop bit: ------------------- 1 Data bits: ------------------- 8 Parity: ------------------- None Flow Control: ------------------- None
RS485 communication interface connection:
The RS485 converter/adapter has to be configured for: multidrop, 2 wire, half duplex mode. The transmitter circuit has to be enabled by TD or RTS (depending on which is available on the converter/adapter). Settings for the receiver circuit usually should follow the selection made for the transmitter circuit in order to eliminate echo.
RS485 T(-) or R(-) -------- pin 11 of the 25 pin "D" connector (-) RS485 T(+) or R(+) -------- pin 24 of the 25 pin "D" connector (+) RS485 GND (if available) -------- pin 20 of the 25 pin "D" connector (GND)
RS232 communication interface connection:
Crossover connection has to be established:
RS232 RX (pin 2 on the DB9 connector) -------- pin 11 of the 25 pin "D" connector (TX) RS232 TX (pin 3 on the DB9 connector) -------- pin 24 of the 25 pin "D" connector (RX) RS232 GND (pin 5 on the DB9 connector) -------- pin 20 of the 25 pin "D" connector (GND)
5
PIN FUNCTION
1 +15 Vdc (Optional +12 or +24 Vdc) Power Supply 2 0 5 Vdc or 4-20mA Flow Signal Output 3 0 5 Vdc or 4-20mA Temperature Signal Output (Optional) 4 0 5 Vdc or 4-20mA Pressure Signal Output (Optional) 5 (reserved) 6 (reserved) 7 (reserved) 8 Relay No. 1 - Common Contact 9 Relay No. 1 - Normally Open Contact 10 Relay No. 2 - Normally Closed Contact 11 RS485 (-) (Optional RS232 TX) 12 (No Connection) 13 Common 14 -15 VDC Power Supply (Only for ±15Vdc option) 15 Common, Signal Ground For Pin 2 (4-20 mA return) 16 Common, Signal Ground For Pin 3 (4-20 mA return) 17 Common, Signal Ground For Pin 4 (4-20 mA return) 18 Common, Power Supply (- DC power for 12 and 24 Vdc) 19 Common 20 RS232 Signal GND (RS485 GND Optional) 21 Relay No. 1 - Normally Closed Contact 22 Relay No. 2 - Common Contact 23 Relay No. 2 - Normally Open Contact 24 RS485 (+) (Optional RS232 RX) 25 Chassis Ground
Figure b-1, FMA6600/6700 25 Pin "D" Connector Configuration.
IMPORTANT NOTES: In general, "D" Connector numbering patterns are standardized. There are, however, some connectors with nonconform­ing patterns and the numbering sequence on your mating connector may or may not coincide with the numbering sequence shown in our pin configuration table above. It is imperative that you match the appropriate wires in accordance with the correct sequence regardless of the particular numbers displayed on the mating connector.
Make sure power is OFF when connecting or disconnecting any cables in the system.
The (+) and (-) power inputs are each protected by a 400mA M (medium time-lag) reset­table fuse. If a shorting condition or polarity reversal occurs, the fuse will cut power to the flow transducer circuit. Disconnect the power to the unit, remove the faulty condition, and reconnect the power. The fuse will reset once the faulty condition has been removed. DC Power cable length may not exceed 9.5 feet (3 meters).
6
Use of the FMA6600/6700 flow transducer in a manner other than that specified in this manual or in writing from Omega7, may impair the protection provided by the equipment.
3. PRINCIPLE OF OPERATION
The stream of gas entering the Mass Flow transducer is split by shunting a small portion of the flow through a capillary stainless steel sensor tube. The remainder of the gas flows through the primary flow conduit. The geometry of the primary conduit and the sensor tube are designed to ensure laminar flow in each branch. According to principles of fluid dynamics the flow rates of a gas in the two lami­nar flow conduits are proportional to one another. Therefore, the flow rates meas­ured in the sensor tube are directly proportional to the total flow through the trans­ducer. In order to sense the flow in the sensor tube, heat flux is introduced at two sections of the sensor tube by means of precision wound heater sensor coils. Heat is transferred through the thin wall of the sensor tube to the gas flowing inside. As gas flow takes place heat is carried by the gas stream from the upstream coil to the downstream coil windings. The resultant temperature dependent resistance differential is detected by the electronic control circuit. The measured gradient at the sensor windings is linearly proportional to the instantaneous rate of flow tak­ing place. An output signal is generated that is a function of the amount of heat carried by the gases to indicate mass molecular based flow rates. Additionally, the FMA6600/6700 Digital Mass Flow Meter incorporates a Digital Signal Processor (DSP) and non-volatile memory that stores all hardware specific variables and up to 10 different calibration tables. Multi parameter flow meters (FMA6700 Series) provide accurate data on three different fluid parameters:
flowpressuretemperature
The flow rate can be displayed in volumetric flow or mass flow engineering units for standard or actual (temperature, pressure) conditions. Flow meters can be programmed locally via the four button keypad and LCD, or remotely, via the RS­232/RS485 interface. FMA6600/6700 flow meters support various functions including: flow totalizer, flow, temperature, pressure alarms, automatic zero adjustment, 2 SPDT relays output, 0-5 Vdc / 0-10 Vdc / 4-20 mA analog outputs for flow, pressure and temperature.
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4. SPECIFICATIONS
FLOW MEDIUM: Please note that FMA6600/6700 Digital Mass Flow Meters are
designed to work with clean gases only. Never try to measure flow rates of liquids with any FMA6600/6700.
CALIBRATIONS: Performed at standard conditions [14.7 psia (101.4 kPa) and
70F F (21.1FC)] unless otherwise requested or stated.
ENVIRONMENTAL (PER IEC 664):
Installation Level II; Pollution Degree II.
FLOW ACCURACY FOR FMA6700 Series (INCLUDING LINEARITY):
0
F
C to 50FC and 5 to 100 psia (34.5 - 689.5 kPa): ±1% of full
scale (F.S.)
FLOW ACCURACY FOR FMA6600 Series (INCLUDING LINEARITY):
±1% of FS at calibration temperature and pressure.
REPEATABILITY: ±0.15% of full scale.
FLOW TEMPERATURE COEFFICIENT:
0.15% of full scale/
F
C or better.
FLOW PRESSURE COEFFICIENT:
0.01% of full scale/psi (6.895 kPa) or better.
FLOW RESPONSE TIME:
Meters up to 10 LPM: 300ms time constant; approximately
1 second to within ±2% of set flow rate for 25% to 100% of full scale flow.
Meters greater than 10 LPM: 600ms time constant; approximately 2 seconds to within ±2% of set flow rate for 25% to 100% of full scale flow.
MAXIMUM BURST PRESSURE:
FMA6600 Series: 500 psig (3447 kPa gauge). FMA6700 Series: 200 psig (1379 kPa gauge).
PRESSURE MEASUREMENT RANGE:
0 to 100 psia (689.5 kPa absolute). P (absolute) = P (gauge) + P (atmospheric)
8
PRESSURE MEASUREMENT ACCURACY:
±1% of F.S.
MAXIMUM PRESSURE DROP:
8 psi (at 100 L/min flow). See Table IV for pressure drops associated with various meters and flow rates.
TEMPERATURE MEASUREMENT RANGE:
0
F
C to 50FC.
TEMPERATURE MEASUREMENT ACCURACY:
±1
F
C.
GAS AND AMBIENT TEMPERATURE:
32 FF to 122 FF (0 FC to 50 FC). 14 FF to 122 FF (-10 FC to 50 FC) ­Dry gases only.
RELATIVE GAS HUMIDITY:
Up to 70%.
LEAK INTEGRITY: 1 x 10
-9
sccs He maximum to the outside environment.
ATTITUDE SENSITIVITY:
Incremental deviation of up to 1% from stated accuracy, after re-zeroing.
OUTPUT SIGNALS:
Linear 0-5 Vdc (3000 ohms min load impedance); Linear 0-10Vdc (6000 ohms min impedance); Linear 4-20 mA (500 ohms maximum loop resistance). Maximum noise 20mV peak to peak (for 0-5 Vdc output).
TRANSDUCER INPUT POWER:
May be configured for three different options: Bipolar ±15Vdc (±200 mA maximum); Unipolar +12Vdc (300 mA maximum); Unipolar +24Vdc (250 mA maximum); Circuit boards have built-in polarity reversal protection. Resettable fuses provide power input protection.
WETTED MATERIALS:
316 stainless steel, 416 stainless steel, FKM O-rings; BUNA, EPR or Perflouroelastomer O-rings are optional.
9
Omega7 makes no expressed or implied guarantees of corrosion resistance of Digital Mass Flow Meters as pertains to different flow media reacting with com­ponents of meters. It is the customers' sole responsibility to select the meter suit­able for a particular gas based on the fluid contacting (wetted) materials offered in the different meters.
INLET AND OUTLET CONNECTIONS:
Meters up to 10 SLPM: standard 1/4" compression fittings, Meters 15 SLPM to 50 SLPM: standard 1/4" compression fittings, Meters greater than 50 SLPM: standard 3/8" compression fittings.
Optional 1/8" or 3/8" compression fittings and 1/4" VCR7 fittings are available.
DISPLAY: 128 x 64 graphic LCD with backlight (up to 8 lines of text).
User selectable backlight saver.
CALIBRATION OPTIONS:
Standard is one 10 points NIST calibration. Optional, up to 9 additional calibrations may be ordered at additional charge.
CE COMPLIANCE:
EMC Compliance with 89/336/EEC as amended. Emission Standard: EN 55011:1991, Group 1, Class A Immunity Standard: EN 55082-1:1992
10
Table I Low Flow Mass Flow Meters*
Table II Medium Flow Mass Flow Meters *
Table III High Flow Mass Flow Meters *80
* Flow rates are stated for Nitrogen at STP conditions [i.e. 70
F
F (21.1FC) at
1 atm]. For other gases use the K factor as a multiplier from APPENDIX 2.
CODE scc/min [N2]
CODE
std liters/min [N
2
]
01 0 to 10 07 0 to 1
02 0 to 20 08 0 to 2
03
0 to 50
09
0 to 5
04 0 to 100 10
0 to 10
05
0 to 200
06 0 to 500
CODE standard liters/min [N2]
11
0 to 15
30 20
31 30
32 40
33 50
CODE standard liters/min [N2]
40 60
41 80
42 100
11
Table IV Pressure Drops
Table V Approximate Weights
FLOW RATE
[std liters/min]
MAXIMUM PRESSURE DROP
[mm H2O] [psid] [kPa]
up to 10 25 0.04 0.276
20 300 0.44 3.03 30 800 1.18 8.14 40 1480 2.18 15.03 50 2200 3.23 22.3 60 3100 4.56
31.4
100 5500 8.08 55.7
MODEL WEIGHT SHIPPING WEIGHT
Meters up to 10 SLPM 2.20 lbs (1.00 kg)
3.70 lbs (1.68 kg)
Meters 15 SLPM and greater 2.95 lbs (1.33 kg)
4.34 lbs (1.97 kg)
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5. OPERATING INSTRUCTIONS
5.1 Preparation and Warm Up
It is assumed that the Digital Mass Flow Meter has been correctly installed and thoroughly leak tested as described in section 2. Make sure the flow source is OFF. When applying power to a flow meter within the first two seconds you will see on the LCD display: the product name, the software version, and revision of the EEPROM table. After two seconds the LSD display switches to the main screen with the following information:
Temperature and Pressure reading (for meters FMA6700 Series only).Mass Flow reading in current engineering units.Current Gas Table and Gas Name.Totalizer Volume reading in current volume based engineering units.Totalizer , Alarm, and Relays status.
FMA6600/6700 Main Screen
Note: Allow the Digital Mass Flow Meter to warm-up for a
minimum of 15 minutes.
During initial powering of the FMA6600/6700 transducer, the flow output signal will be indicating a higher than usual output. This is an indication that the FMA6600/6700 transducer has not yet attained it's minimum operating tempera­ture. This condition will automatically cancel within a few minutes and the trans­ducer should eventually zero.
5.2 Swamping Condition
If a flow of more than 10% above the maximum flow rate of the Digital Mass Flow Meter is taking place, a condition known as "swamping" may occur. Readings of a "swamped" meter cannot be assumed to be either accurate or linear. Flow must be restored to below 110% of maximum meter range. Once flow rates are lowered to within calibrated range, the swamping condition will end. Operation of the meter above 110% of maximum calibrated flow may increase recovery time.
F
F
13
5.3 Programming FMA6600/6700
using LCD and Keypad
All features of the flow meter can be accessed via the local four button keypad and LCD.The LCD incorporates an energy-saving auto shut-off backlit feature. If enabled, after 15 minutes of operation without user intervention the LCD backlit turns off. In order to turn on the LCD backlit press any key on the keypad. The LCD backlit energy-saving auto shut-off feature can be disabled or enabled by user (see p. 5.3.12 "LCD backlit Energy-saving Setting").
5.3.1 Changing Units of measurement for
Temperature and Pressure reading
By default after power up the temperature reading is displayed in
F
F and pressure
in PSI. Pressing () [Enter] button from main screen will alter the units of meas­ure to
F
C for temperature and kPa for pressure reading respectively. In order to
change units of measure back to
F
F for temperature and PSI for pressure press
() [Enter] button while in the main screen one more time.
5.3.2 Monitoring FMA6600/6700 Peripheries Settings
The last row at the bottom of the main LCD screen reflects settings and status for Totalizer, Flow Alarm, and Relays (see Figure b-2).
Totalizer Status:
TOT: R - totalizer is running (Enabled). TOT: S - totalizer is stopped (Disabled).
Flow Alarm Status:
A: S - flow alarm is disabled. A: R,N - flow alarm is enabled and currently there are no alarm conditions. A: R,L - flow alarm is enabled and currently there is Low alarm condition. A: R,H - flow alarm is enabled and currently there is High alarm condition.
F
F
14
Relay Settings:
N - No assignment (relay is not assigned to any events). H - High Flow Alarm condition. L - Low Flow Alarm condition. R - Range between High and Low Flow Alarm condition. T - Totalizer reached set limit. A - High Temperature Alarm condition. B - Low Temperature Alarm condition. C - High Pressure Alarm condition. D - Low Pressure Alarm condition.
Continued pressing of the () [Up] button from the main screen will switch the status line to display the following information:
- Calibrated Full scale range in standard L/min for current Gas Table.
- Device Digital Communication interface type (RS485 or RS-232).
- Device RS485 address (two hexadecimal characters).
- Device Zero DAC counts (for troubleshooting purposes).
- Device Sensor Average ADC counts (for troubleshooting purposes).
- Device Sensor Compensated ADC counts (for troubleshooting purposes).
Note: Pressing the () [Dn] button from any of the status line will switch the status display to one step back.
5.3.3 FMA6600/6700 Main Menu
Pressing of the () [Esc] button from the main screen will switch the display to the Main Menu. The following screen will appear:
Figure b-3, FMA6600/6700 Main Menu Screen
Pressing of the () [Up] or () [Dn] buttons allows the user to scroll up or down the menu options. Press () [Enter] button to select the highlighted option of the menu.
15
The following menu options are available:
1. Units of Measure -
View or Change the Units of Measure for Flow process variable.
2. Gas Table Select -
View or Change the Gas Table.
3. Totalizer -
View or Change settings for Totalizer.
4. Alarm Settings -
View or Change settings for Flow , Pressure and Temperature Alarm.
5. Relay Action -
View or Change settings for each of two available Relays.
6. K Factors -
View or Change settings for User defined or Internal K Factors.
7. Zero Calibration -
Initiate Automatic Sensor Zero Calibration.
8. Flow Conditions -
Allows the user to set the Actual or Standard Flow conditions.
9. BackLight Timer -
Allows the user to turn On/Off the Energy-saving for LCD backlit.
10. Exit -
Returns to the Main Screen with process variables reading.
Note: Pressing the [Esc] button from any level of the Menu will switch the menu to one level higher (up to Main Screen).
5.3.4 Gas Flow Engineering Units Settings
While in the Main Menu scroll with () [Up] or () [Dn] buttons to highlight the Units of Measure option and press the () [Enter] button. The following screen will appear:
Figure b-4, FMA6600/6700 Units of Measure Screen
The following Engineering Units menu options are available:
1. % F.S. - percent of full scale.
2. L/min - Liters per minute.
3. L/h - Liters per hour.
4. mL/min - milliliters per minute.
5. mL/h - milliliters per hour.
6. SCFH - cubic feet per hour.
7. SCFM - cubic feet per minute.
8. LbPH - pounds per hour.
9. LbPM - pounds per minute.
10. User - User defined Unit of Measure.
11. Exit - Exit to Main Menu
Selecting option 1 to 9 sets the corresponding Unit of Measure and switches the LCD back to Main Menu.
Note: Once Flow Unit of Measure is changed the Totalizer's Volume based Unit of Measure will be changed automatically.
If the User defined Unit of Measure option is selected the following screen will appear:
Figure b-5, User Defined Unit of Measure Screen (K factor)
In order to specify the User Defined Unit of Measure user has to set three key parameters:
K factor: - Conversion factor relative to L/min unit of measure. Time base: - Hours, Minutes, or Seconds Density: - Use density (YES / NO)
Press the () [Enter] button, to move the flashing cursor to the digit, which has to be adjusted. Pressing () or () will increment or decrement a particular digit respectively. The numbers will change from 0 to 9 and next to the decimal
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point (.). Pressing the () button one more time will change the digit on the high­lighted position of the cursor back to 0. The same is true in reverse, when press­ing the () button. Only one decimal point is allowed. If changing position of the decimal point is required, change decimal point to any desired digit then move the cursor to the required position and adjust it to the decimal point with () or () button. When complete with K-factor value settings, press the () [Esc] button to move in to the Time base settings screen. The following screen will appear:
Figure b-6, User Defined Unit of Measure Screen (Time base)
Use () or () buttons to highlight desired time base option. Press the () [Enter] button to set the Time base and move in to the Density settings screen. The following screen will appear:
Figure b-7, User Defined Unit of Measure Screen (Density)
Use () or () buttons to highlight desired Density option. Press the () [Enter] button when done. The LCD will display the Units of Measure Screen and new set­tings will be reflected at the bottom status line.
5.3.5 Gas Table Settings
The FMA6600/6700 Digital Mass Flow Meter is capable to store calibration data for up to 10 different gases.
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