Aalborg PWE Digital User Manual
OPERATING MANUAL
PWE
Digital Paddle Wheel
Flow Meter
Technical Data Sheet No.: TD-10-09-118M
Date of Issue: October 2009
Aalborg7is a registered trademark of Aalborg Instruments & Controls.
NOTE: Aalborg reserves the right to change designs and dimensions at its sole
discretion at any time without notice. For certified dimensions please contact Aalborg7.
TABLE OF CONTENTS
1. UNPACKING THE PWE FLOW METER..........................................
1.1 Inspect Package for External Damage........................................................
1.2 Unpack the PWE meter..............................................................................
1.3 Returning Merchandise for Repair..............................................................
2. PWE FLOW METERS TECHNICAL DATA..........................................
2.1 Principles of Operation...............................................................................
2.2 Electrical Connections................................................................................
2.2.1 Power Supply Connections........................................................................
2.2.2 Analog Output Signals Connections.............................................................
2.2.3 Flow Sensor Pulse Output Signals Connections........................................
2.2.4 Programmable optically isolated Output Signals Connections....................
2.2.5 Communication Parameters and Connections.............................................
2.3 PWE Flow Meter Specification....................................................................
2.4 PWE Maintenance.........................................................................................
2.4.1 Sensors.......................................................................................................
2.4.2 PWE Paddle Wheel Disassembly................................................................
3. LCD KEYPAD OPERATION: DATA ENTRY AND CONFIGURATION...........
3.1 Display Indications (applicable for LCD options only)................................
3.1.1 PWE with RTD option Process Information Screens..................................
3.1.2 PWE without RTD option Process Information Screens.............................
3.2 Menu Sequence............................................................................................
3.3 Parameter Summary and Data Entry.............................................................
4. PARAMETER ENTRY...............................................................
4.1 Submenu Program protection...................................................................
4.2 Submenu Flow Meter Info...........................................................................
4.2.1 Full Scale Flow..............................................................................................
4.2.2 Communication Interface............................................................................
4.2.3 RTD hardware option..................................................................................
4.2.4 Analog Flow Output settings.......................................................................
4.2.5 Analog Temperature Output settings...........................................................
4.2.6 Flow Meter EEPROM data base version.....................................................
4.2.7 Flow Meter Firmware version.......................................................................
4.2.8 Flow Meter Serial number.............................................................................
4.2.9 Flow Meter Model number..........................................................................
4.2.10 Fluid Name.................................................................................................
4.2.11 Flow Meter Calibration Date........................................................................
4.2.12 Flow Meter Calibration Date Due..................................................................
4.2.13 Flow Meter User Tag Name.........................................................................
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4.3 Submenu Measuring Units........................................................................
4.3.1 User Defined Measuring Unit......................................................................
4.3.1.a User Defined Unit Factor Numeric entry......................................................
4.3.1.b User Defined Unit Time Base Tabular entry................................................
4.3.1.c User Defined Unit Density support Tabular entry.....................................
4.4 Submenu Flow Alarm.................................................................................
4.4.1 Flow Alarm Mode Tabular entry................................................................
4.4.2 Low Flow Alarm Numerical entry..............................................................
4.4.3 High Flow Alarm Numerical entry..............................................................
4.4.4 Flow Alarm Action Delay Numerical entry...................................................
4.4.5 Flow Alarm Action Latch Tabular entry.....................................................
4.5 Submenu Temperature Alarm (*optional)...................................................
4.5.1 Temperature Alarm Mode Tabular entry...................................................
4.5.2 Low Temperature Alarm Numerical entry...................................................
4.5.3 High Temperature Alarm Numerical entry...................................................
4.5.4 Temperature Alarm Action Delay Numerical entry.....................................
4.5.5 Temperature Alarm Action Latch Tabular entry.........................................
4.6 Submenu Main Totalizer..............................................................................
4.6.1 Main Totalizer Mode Tabular entry............................................................
4.6.2 Main Totalizer Flow Start Numerical entry................................................
4.6.3 Main Totalizer Event Volume Numerical entry..........................................
4.6.4 Main Totalizer Reset Tabular entry............................................................
4.7 Submenu Pilot Totalizer............................................................................
4.7.1 Pilot Totalizer Mode Tabular entry..............................................................
4.7.2 Pilot Totalizer Flow Start Numerical entry..................................................
4.7.3 Pilot Totalizer Event Volume Numerical entry.............................................
4.7.4 Pilot Totalizer Reset Tabular entry.............................................................
4.8 Submenu Optical Outputs Numerical entry..................................................
4.9 Submenu Flow Meter Configuration.........................................................
4.9.1 Submenu Flow Meter Low Flow Cut–off Numerical entry........................
4.9.2 Submenu Pulse Number Measure Interval Numerical entry........................
4.9.3 Submenu Flow Meter Calibration Factor Numerical entry........................
4.9.4 Submenu Flow Meter Measure Mode Tabular entry.................................
4.9.5 Submenu Noise Reduction Filter Damping Time Numerical entry............
4.9.6 Submenu Noise Reduction Filter Sample Number Numerical entry............
4.9.7 Submenu Flow Linearizer Tabular entry....................................................
4.9.8 Submenu Fluid Density Numerical entry...................................................
4.9.9 Submenu Pilot Calibration timer Tabular entry...........................................
4.10 Submenu LCD Back Light Numerical Entry...............................................
4.11 Submenu Alarm Events Log....................................................................
4.11.1 Submenu Alarm Events Log Status...........................................................
4.11.2 Submenu Alarm Events List......................................................................
4.11.3 Submenu Alarm Events Log Mask...........................................................
4.12 Submenu Diagnostic...................................................................................
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4.12.1 Submenu Raw Pulses Count.....................................................................
4.12.2 Submenu Pulse Frequency.........................................................................
4.12.3 Submenu Raw RTD reading (RTD option only)........................................
4.12.4 Submenu DAC_A Flow Output..................................................................
4.12.5 Submenu DAC_B Temperature Output....................................................
4.12.6 Submenu CPU Temperature........................................................................
4.12.7 Submenu Raw VCC Reading....................................................................
5. ANALOG OUTPUT SIGNALS.....................................................
5.1 Analog Output Signals configuration........................................................
5.2 Analog Output Signals calibration............................................................
5.2.1 Initial Setup...............................................................................................
5.2.2 Flow 0-5 Vdc analog output calibration....................................................
5.2.3 Flow 4-20 mA analog output calibration....................................................
5.2.4 Temperature 0-5 Vdc analog output calibration*......................................
5.2.5 Temperature 4-20 mA analog output calibration*....................................
6. PWE FLOW CALIBRATION PROCEDURES.....................................
6.1 Connections and Initial Warm Up.............................................................
6.2 Flow Meter Span Calibration....................................................................
6.3 Flow Meter Linearization Table Calibration..................................................
7. RS-485/RS-232 SOFTWARE INTERFACE COMMANDS.....................
7.1 General.......................................................................................................
7.2 Commands Structure................................................................................
7.3 ASCII Commands Set..............................................................................
8. TROUBLESHOOTING...............................................................
8.1 Common Conditions.................................................................................
APPENDIX I
PWE EEPROM Variables.................................................
APPENDIX II Component Diagram Top Side......................................
Component Diagram Bottom Side..................................
APPENDIX III Dimensional Drawing................................................
APPENDIX IV Warranty................................................................
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1. UNPACKING THE PWE
1.1 Inspect Package for External Damage
Your PWE Paddle Wheel Meter was carefully packed in a sturdy cardboard carton,
with antistatic 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 PWE 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 your distributor or Aalborg
®
directly. 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 the customer service representative of your distributor or Aalborg
®
if you purchased your PWE Meter directly, and request a Return Authorization
Number (RAN). Equipment returned without an RAN will not be accepted.
Aalborg
®
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 warranted
defects. Shipping charges are borne by the customer. Items 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. PWE FLOW METERS TECHNICAL DATA
2.1 Principles of Operation
PWE liquid flow meters consist of a meter body that is installed in-line in a conduit system. Inside, between the inlet and the outlet connections is a rotary wheel
with permanent magnets embedded at 180 degrees in paddles.
Fluid flowing through the meter causes the paddle to spin. A magnetic sensor
picks up the frequency of pulses, and the readings are proportional to the liquid
flow taking place. The number of pulses per unit time interval and a K-factor (pulses/unit of flow) facilitate determining the volumetric rate of flow through the
meter.
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Additionally, the PWE Flow Meter incorporates a Microcontroller driven circuitry
and non-volatile memory that stores all hardware specific variables. The flow rate
can be displayed in 29 different volumetric or mass flow engineering units. Flow
meter parameters and functions can be programmed remotely via the RS-232/RS485 interface or locally via optional LCD/KeyPad. PWE flow meters support various functions including: two programmable flow totalizers, low, high or range flow
and temperature* alarms, 2 programmable optically isolated outputs, 0-5 Vdc / 420 mA analog outputs (jumper selectable) for each process (flow and temperature*) variable, self diagnostic alarm. Optional local 2x16 LCD* readout with
adjustable back light provides flow rate, temperature*, total volume reading in currently selected engineering units, diagnostic events indication and feature a password protected access to the process parameters to ensure against tampering or
resetting.
2.2 Electrical Connections
PWE flow meter is supplied with “M16” cylindrical 12 pin connector. Pin diagram
is presented in figure b-1.
Figure b-1, PWE 12 Pin "M16" Connector Configuration
PIN PWE FUNCTION TYPE
A Plus Power Supply (+ DC power 11 to 26 Vdc) +Power
B
Common Power Supply, (DC power 11 to 26 Vdc),
Digital Common
-Power,
Common
C
Flow Sensor Pulse Output (active), 3.3Vdc 3K min.
load impedance
Output
Only
D
Digital Communication interface, RS485 (-)
(Optional RS232 TX)
Input
/Output
E
Digital Communication interface, RS485 (+)
(Optional RS232 RX)
Input
/Output
F Optical Output No.1 Plus (+) (passive) Input
G
Optical Output No.1 Minus (-) (passive)
Return
for Pin F
H Optical Output No.2 Plus (+) (passive) Input
J Optical Output No.2 Minus (-) (passive)
Return
for Pin H
K
Common, Analog Signal Ground For Pins L & M,
(4-20 mA return)
Signal
Common
L
Temp. Analog Output Plus (+) 0-5 Vdc or 4-20 mA,
jmp. selectable
Output
Only
M
Flow Analog Output Plus (+), 0-5 Vdc or 4-20 mA,
jmp. selectable
Output
Only
2
2.2.1 Power Supply Connections
The power supply requirements for PWE flow meter are: 11 to 26 Vdc 100 mV
maximum peak to peak output noise, (unipolar power supply).
Pin A ------------- DC Power (+)
Pin B ------------- DC Power (-)
The (+) and (-) power inputs are each protected by a 300mA 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.
Use of the PWE flow meter in a manner other than that specified in this manual or
in writing from Aalborg
®
, may impair the protection provided by the equipment.
2.2.2 Analog Output Signals Connections
PWE series Flow Meters are equipped with either calibrated 0-5 or calibrated 4-20
mA output signals (jumper selectable). This linear output signal represents
0-100% of the flow meter’s full scale range.
CAUTION: Do not apply power voltage above 26Vdc.
Doing so will cause PWE damage or faulty operation.
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Make sure power is OFF when connecting or disconnecting any cables
in the system.
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 if the wiring and
the polarity of the power supply is correct before turning the power
ON. Wiring error may cause damage or faulty operation.
WARNING: The 4-20 mA current loop output is self-powered (sourcing
type, non-isolated). Do NOT connect an external voltage source to the
output signals.
Flow 0-5 VDC or 4-20 mA output signal connection:
Pin M ------------ (+) Plus Flow Analog Output
Pin K ------------ (-) Minus Flow Analog Output
Temperature 0-5 VDC or 4-20 mA output signal connection (optional):
Pin L ------------ (+) Plus Temperature Analog Output
Pin K ------------ (-) Minus Temperature Analog Output
To eliminate the possibility of noise interference, use a separate cable entry for
the DC power and analog signal lines (pins L, M, K on “M16” connector).
2.2.3 Flow Sensor Pulse Output Signals
Connections
Pin C ------------ (+) Flow Sensor Pulse Output (active), 3.3Vdc
Pin B ------------ DC Power (-), Digital Common
4
WARNING: Observe jumper configuration before connecting 4-20 mA
current loop load. Failure to make proper jumper configuration (see
Figure 5-1) may cause damage for output circuitry.
Do NOT connect an external voltage source to the output signals.
WARNING: The flow sensor pulse output is self-powered (open drain,
pulled up with 10K resistor to internal 3.3Vdc rail).
Do NOT connect an external voltage source to the pulse output signals.
Use load with input impedance more than 30K is recommended.
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2.2.4 Programmable optically isolated Output
Signals Connections
Optocoupler #1 (pins F and G):
Pin F ------------ Plus (+) (passive)
Pin G ------------ Plus (-) (passive)
Optocoupler #2 (pins H and J):
Pin H ------------ Plus (+) (passive)
Pin J ------------ Plus (-) (passive)
2.2.5 Communication Parameters and Connections
The digital interface operates via RS485 (optional RS-232) and provides access to
applicable internal data including: flow, temperature, totalizers and alarm settings,
flow linearizer table, fluid density and engineering units selection.
WARNING: Optically isolated outputs require application of DC voltage
across terminals. Do not exceed maximum allowed limits for voltage
and current provided below:
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Communication Settings for RS-485/RS-232 communication interface:
Baud rate: ------------ 9600 baud
Stop bit: ------------ 1
Data bits: ------------ 8
Parity: ------------ None
Flow Control: ------------ None
RS-485 communication interface connection:
The RS485 converter/adapter must be configured for: multidrop, 2 wire, half duplex
mode. The transmitter circuit must be enabled by TD or RTS (depending on which
is available on the converter/adapter). Settings for the receiver circuit should follow
the selection made for the transmitter circuit in order to eliminate echo.
Pin D ------------ RS-485 T(-) or R(-)
Pin E ------------ RS-485 T(+) or R(+)
Pin B ------------ RS-485 GND (if available)
RS-232 communication interface connection:
Crossover connection has to be established:
Pin D ------------ RS-232 RX (pin 2 on the DB9 connector)
Pin E ------------ RS-232 TX (pin 3 on the DB9 connector)
Pin B ------------ RS-232 SIGNAL GND
(pin 5 on the DB9 connector)
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2.3 PWE Flow Meter Specification
FLOW MEDIUM: Please note that PWE Flow Meters are designed to work only
with liquids. Never try to measure flow rates of dry gas.
CALIBRATIONS: Performed at standard conditions [14.7 psia (101.4 kPa) and
70 °F (21.1 °C)] unless otherwise requested or stated.
VISCOSITY: Calibrated to 1 cPoise (water). Meters can be used for fluids up to
50 cPoise with field calibration (maximum flow range may be affected).
ENVIRONMENTAL (PER IEC 664): Installation Level II; Pollution Degree II.
FLOW ACCURACY (INCLUDING LINEARITY): ±1% of FS.
REPEATABILITY: ±0.25% of full scale.
TEMPERATURE ACCURACY (INCLUDING LINEARITY)*: ±0.5 °C.
FLOW RESPONSE TIME: Approximately 1 seconds (above 10% of full scale
flow), approximately 2 seconds (below 10% of full scale flow).
MAXIMUM PRESSURE: 10 bar (150 psi).
MAXIMUM PRESSURE DROP: See Table 2.3.1 for pressure drops associated
with various models and flow rates.
FLUID AND AMBIENT TEMPERATURE: 14 °F to 140 °F (-10 °C to 60 °C).
OUTPUT SIGNALS: Linear 0-5 Vdc (3000 ohms min load impedance);
Linear 4-20 mA (500 ohms maximum loop resistance).
Maximum noise 20mV peak to peak (for 0-5 Vdc output).
Flow Pulse Output: 3.3 Vdc amplitude (3000 ohms min load impedance).
OPTICALLY ISOLATED OUTPUTS: UCE 40Vdc, ICE 150 mA.
FLOW METER INPUT POWER: 11 to 26 Vdc, 100 mV maximum peak to peak
output noise. Power consumption: +12Vdc (150 mA maximum);
+24Vdc (100 mA maximum); Circuit board have built-in polarity reversal
protection, 300mA resettable fuse provide power input protection.
COMMUNICATIONS PARAMETERS (RS-232/RS-485):
Baud rate: ...................... 9600 baud
Stop bit: ...................... 1
Data bits: ...................... 8
Parity: ...................... None
Flow Control: ...................... None
DISPLAY*: Optional local 2x16 characters LCD with adjustable backlight (2 lines of text).
KEY PAD*: Optional 4 push button key pad.
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
(* - optional feature)
Table 2.3.1 PWE Flow Meter Flow Ranges and Pressure Drop
Table 2.3.2 PWE Flow Meter wetted materials
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FLOW RATE FOR PWE
METER
SIZES
FLOW RATE H20
INLET/OUTLET
PORTS FEMALE
NPT
MAXIMUM PRESSURE DROP
[L/min] Gal/min Bar PSI
PWE4 0.15-18.9 0.04-5 3/8" 1 15
PWE6 0.3-37.6 0.08-10 1/2" 1.4 20
PWE8 0.6-64.4 0.15-17 3/4" 1.4 20
PWE10 1.3-132.5 0.35-35 1" 1.4 20
WETTED MATERIALS
POLYPROPYLENE MODELS PVDF MODELS
BODY Polypropylene PVDF
LID Acrylic PVDF
PADDLE WHEEL
PVDF
Nickel Tungsten Carbide
PVDF
Zirconia Ceramic
BEARINGS Sapphire Jewels Sapphire Jewels
O-RINGS EPDM PTFE
PLATINUM RTD 316 stainless steel casing 316 stainless steel casing
9
2.4 PWE MAINTENANCE
CAUTION: Some of the IC devices used in the flow meter signal
conditioning circuitry are static sensitive and may be damaged by
improper handling. When adjusting or servicing the signal converter,
use of a grounded wrist strap is recommended to prevent inadvertent
damage to the integral solid state circuitry. The flow meter signal
conditioning circuitry uses complex electronic circuit components.
Generally, due to the complexity of troubleshooting integrated circuit
devices, maintenance beyond the PCB assembly level is not
recommended. Also, caution must be used when connecting test
probes, as even a momentary accidental short circuit may damage or
destroy an integrated circuit device.
CAUTION: Never use compressed air or gases to test the meter,
as this would damage the Bearings.
2.4.1 Sensors
In rare instances, due to electrical damage, the pulse sensor or RTD need to be
replaced by disconnecting the signal cable connector from the PCB and unscrewing it and installing a replacement. This procedure can be done only by factory
authorized personel.
2.4.2 PWE Paddle Wheel and Bearings Replacement
To replace the paddle wheel, disconnect the meter from electrical and liquid lines.
Unscrew 4 screws that hold the lid in place. Remove the lid by lifting it up and
move the wheel out. The Wheel’s embedded shaft is supported at each end by sapphire bearings to minimize friction and facilitate very low flow rate measurements
(see Figure 2-1). Reassembly is made ensuring that the shaft end is inserted gently into the bottom bearing. Check to see if the wheel is free to spin before the lid
is installed. Gently put the lid over the opening and gently spin it by hand until the
upper bearing, installed in the lid, drops into the place. Hold the lid down and
check for free spinning by lightly blowing into the port; or lightly shake and listen
if both shaft ends got into the bearings. Make sure the O-ring is in its seat, insert
four cap screws and gradually tighten them. Bearings are made of sapphire, which
rarely needs replacement, unless they were physically shattered. Bearings highly
susceptible to careless disassembly and reassembly practices. While the unit is
disassembled for paddle wheel replacement, bearing could be replaced with bearing removal tool.
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1
4
2
3
2
7
6
5
8
NOTE: Platinum RTD is not shown.
PARTS LIST
PARTS PWEP MATERIALS PWET MATERIALS
1 LOWER BLOCK POLYPROPYLENE PVDF
2 JEWEL BEARING (2 required) PVDF SAPPHIRE
3 PADDLE WHEEL
PVDF & NICKEL
TUNGSTEN CARBIDE
PVDF &
ZIRCONIA CERAMIC
4 LID ACRYLIC PVDF
5 JUMPER COMPARTMENT PLUG POLYPROPYLENE
6 SCREW 8-32 (4 required) STAINLESS STEEL
7 O-RING EPDM PTFE
8 SCREW 6-32 STAINLESS STEEL
Figure 2-1 PWE assembly presentation drawing
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3. LCD KEYPAD OPERATION: DATA ENTRY AND
CONFIGURATION
(applicable for LCD options only)
3.1 Display Indications
Initially, after the power is first turned on, the flow meter model number is shown
in the first line of the display and the revisions for EPROM table and firmware in
the second line. Subsequently the actual process information is displayed. The
instantaneous flow rate is displayed on the first line in percent or in direct
reading units with flow alarm status indication. For flow meters without RTD
option, the main totalizer value, up to 9 digits (including decimal), is displayed in
the second line with its corresponding units.
For flow meters with RTD option, the temperature reading value in deg C, is displayed in the second line with temperature alarm status indication. This display is
designated as process information (PI) screen throughout the remainder of this
manual.
The temperature value (applicable for RTD option only) in deg F can be displayed
in the PI screen by pressing the ENT pushbutton. The temperature indication can
be switched from deg C to deg F and back by pressing ENT pushbutton.
Figure 3.1: PWE first Banner Screen
Figure 3.2: PWE with RTD option initial Process Information Screen
AALBORG PW METER
Fw: A001 Tbl: A001
5.001 Gl/min AD
20.1 C TA: D
Note: Actual content of the LCD screen may vary depending on the
model and device configuration.
,
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Figure 3.3: PWE without RTD option initial Process Information Screen
Based on flow meter configuration (with or without RTD option), different parameters may be displayed in the PI screen by pressing the UP or DN pushbuttons.
3.1.1 PWE with RTD option Process Information
Screens
Pressing UP and DN buttons from initial PI screen will switch display as following:
[Initial PI screen]
Action: Keypad UP
i
Figure 3.4: PWE with RTD option Process Information Screen with Main Totalizer
Action: Keypad UP
i
Figure 3.5: PWE with RTD option Process Information Screen with Pilot Totalizer
5.001 Gl/min AD
MT: 60639.38 Gal
5.001 Gl/min AD
MT: 60639.38 Gal
5.001 Gl/min AD
PT: 65.81 Gal
13
Action: Keypad UP
i
Figure 3.6: PWE with RTD option PI Screen with flow range, temperature and
Main Totalizer
Action: Keypad UP
i
Action: Keypad UP
i
Figure 3.7: PWE with RTD option PI Screen with Main Totalizer, temperature and
Pilot Totalizer
Action: Keypad UP
i
Figure 3.8: PWE with RTD option PI Screen with Main and Pilot Totalizers
5.001 Gl/min AD
20.1 C *******Gal
MT: 60639.38 Gal
20.1 C 65.81 Gal
MT: 60639.38 Gal
PT: 65.81 Gal
14
Action: Keypad UP
i
Figure 3.9: PWE with RTD option initial Process Information Screen
Pressing UP button, pages through the PI screens in the forward direction.
Pressing DN button, pages through the PI screens in the reverse direction. When
the last PI screen is reached, the firmware "wraps around" and scrolls to the initial
PI screen once again.
3.1.2 PWE without RTD option Process
Information Screens
Pressing UP and DN buttons from initial PI screen will switch display as following:
[Initial PI screen]
Action: Keypad UP
i
Figure 3.10: PWE without RTD option PI Screen with Main and Pilot Totalizer
Action: Keypad UP
i
Figure 3.11: PWE without RTD option initial PI Screen with Main and Pilot
Totalizer
MT: 60639.38 Gal
PT: 65.81 Gal
5.001 Gl/min AD
20.1 C TA: D
5.001 Gl/min AD
PT: 65.81 Gal
15
Action: Keypad UP
i
Figure 3.12: PWE without RTD option initial PI Screen with Flow rate and Main
Totalizer
3.2 Menu Sequence
The listing below gives a general overview of the standard top-level display menu
sequence when running firmware version A002. The ESC pushbutton is used to
toggle between the process mode (PI screens) and the menu.
The listing in Section 3.2 shows the standard display menu sequence and submenus using the UP button to move through the menu items. The first message
displayed the first time the ESC button is pressed after the converter is powered
up is "Prog. Protection ON". Thereafter, pressing the ESC button while the
flow meter is in monitoring mode (PI screens) will display the parameter that was
last exited.
Program Protection may be turned "off" by pressing the ENT button when the Prog.
Protection menu is displayed. The firmware will prompt with "Change Prog Prot”.
Pressing UP or DN button will toggle current protection status. If password is set
to any value more than zero, the firmware will prompt with "Enter Prot Code". User
has to enter up to 3 digits program protection code, in order to be able to access
password protected menus. Once correct password is entered, program protection id turned off until unit is powered up again.
When the last menu item is reached, the firmware "wraps around" and scrolls to
the first item on the menu once again (see Figure 3.12). The menu items in the first
column are upper-level configuration mode functions. Submenu selections
(shown indented in the second column) only appear if the associated upper level
is selected by pressing the ENT push button. The allowable selections of submenu items which are selected by tabular means are shown in detail in Section 3.3
5.001 Gl/min AD
MT: 60639.38 Gal
16
Figure 3.12 Upper level menu structure.
CONFIGURATION DATA
Prog. Protection
on/off
Prog. Prot. Code
old/new
Submenu
Flow Meter Info
Submenu
Measuring Units
Submenu
Flow Alarm
Submenu
Temp. Alarm
Submenu
Main Totalizer
Submenu
Pilot Totalizer
Submenu
Optical Outputs
Submenu
FlowMeter Config
LCD Back Light
50 %F.S.
Submenu
Alarm Events Log
Submenu
Diagnostic
17
3.3 Parameter Summary and Data Entry
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