AW-Lake EDG-2C-12S User manual

Installation, Operating &
Maintenance Manual
The EDGE Flow Sensor
with Bluetooth
©2020 AW-Lake Company. All rights reserved. Doc ID: EDGMAN121620

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Table of Contents
Product Overview.............................................................................................................3
Technical Specifications ............................................................................................................ 3
Dimensions................................................................................................................................ 4
Wiring Connectors .................................................................................................................... 4
Signal Information .................................................................................................................... 5
Bluetooth App .................................................................................................................6
Overview ................................................................................................................................... 6
Connecting ................................................................................................................................ 6
Menus ...................................................................................................................................... 6
System settings (Scaling units) ................................................................................................. 7
K-Factor .................................................................................................................................... 7
Max Flow Rate .......................................................................................................................... 7
Digital Filter .............................................................................................................................. 7
Time Base ................................................................................................................................. 7
Flow units.................................................................................................................................. 7
Bluetooth name ........................................................................................................................ 8
Output Settings ......................................................................................................................... 8
Forced outputs.......................................................................................................................... 8
Output Calibration .................................................................................................................... 8
Linearizer................................................................................................................................... 9
Computer Toolkit ...........................................................................................................10
Overview ................................................................................................................................. 11
Getting Started........................................................................................................................ 11
Communication Status............................................................................................................ 11
K-Factor................................................................................................................................... 11
Scaling analog output.............................................................................................................. 12
Max Flow Rate ........................................................................................................................ 12
Digital Filter............................................................................................................................. 12
Time Base................................................................................................................................ 12
Flow units................................................................................................................................ 12
Analog Output Type................................................................................................................ 12
Forced Outputs ....................................................................................................................... 12
Analog Output Calibration ...................................................................................................... 13
Linearizer................................................................................................................................. 14
Bluetooth Settings .................................................................................................................. 14
Upgrading Firmware ............................................................................................................... 15
Modbus Register Map............................................................................................................. 16

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Overview
AW-Lake’s EDGE sensor family is an all in one sensor. The EDGE will mount on most of
our flow meters and has 3 different output types available. We have equipped the board with
an easy to use USB-C connector which allows users to connect to our free computer toolkit for
programming and real time flow updates. An optional Bluetooth feature is available on most
versions with no extra cost, which allows users to connect to a mobile app to setup the sensor
and view real-time outputs with their smart devices. The sensor comes equipped with an
integrated linearizer for voltage and current outputs. This unit will be replacing most of our
legacy sensors and should be a simple, more cost-effective solution. The new design is RoHS
compliant and utilizes surface mount components and a more up-to-date circuit design.
*Please note that some features and specifications are model-specific.
Technical Specifications

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EDG1
EDG2

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Signal Outputs
Frequency
Each sensor model comes equipped with a frequency output. Each frequency out can be set to 3
different output types: Push-Pull, Sinking, and Sourcing. Push-Pull is the default setting. All other
options can be set through the computer toolkit or Bluetooth app.
Analog
Current output – The EDGE currently offers a sourced 4-20 mA output that can be scaled via
the Bluetooth app or the computer toolkit. Current output tied to supply ground.
Voltage output – The EDGE offers 4 types of Voltage outputs: 0-5, 1-5, 0-10, 2-10 Volts.
Default output is 0-10V and can be changed via the Bluetooth app and toolkit. Voltage output
tied to supply ground.
Input Source (for Version EDG2-2x-xxS)
For versions with dual pick-ups, the EDGE sensor offers 4 different choices on the frequency
output lines; Signal 1, Signal 2, Signal 1+2, and Direction.
Signal 1 – Outputs frequency from pick-up 1 (leads signal 2 by 90 degrees phase shift)
Signal 2 – Outputs frequency from pick-up 2 (trails signal 1 by 90 degrees phase shift)
Signal 1+2 – Outputs 2x the frequency. Users using this output must multiply the k-factor by 2
Direction – Outputs a high or low signal based on the flow direction. In forward direction unit
will output a high signal equal to the supply voltage. In reverse flow unit will output a low signal.
Test Mode
The EDGE sensor comes equipped with a push button that allows the sensor to output a set
frequency on the signal output lines. There are 3 modes of operation which is indicated by the green
LED on the board. (D2 for frequency boards and D4 for analog and Modbus)
Mode 1- Standard operating mode indicated with 1 green LED blink every 3 seconds
Mode 2- Outputs 10 Hz frequency. For dual sensor versions, it outputs on both signal outs with signal 1
leading signal 2 by a 90 degree phase shift.
Mode 3- Outputs 50 Hz frequency. For dual sensor versions, it outputs on both signal outs with signal 2
leading signal 1 by a 90 degree phase shift.

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Bluetooth Application
EDGE App Overview
This product offers a Bluetooth app for android devices
(Android 10 or newer operating systems) that allows scaling of
the analog output wirelessly. The application can be found on
the AW-Lake website or on the Google play store.
Getting Started
Download and open the application. It will ask you to turn on
Bluetooth, if not already on. Press the orange button at the bottom to
scan for devices (Figure 1). The default name of the device will be the
same as the serial number on the outside of the device. Tap on the
name to connect. Once connected the device name will appear at the
top of the display with flow rate, Voltage output, and Current output.
(Figure 2)
Figure 1: Main Menu
Figure 2: Device Menu

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Menu Navigation
Press the three lines in the top right corner to access the setup menu
(Figure 3)
System Settings: Adjust K-factor, Filter, Flow Units, Flow Time Base,
Max Flow Rate, Max Flow Units, Max Time Base, and Bluetooth name
Output Settings: Where outputs can be forced to certain
values or output type can be selected (Voltage type only)
Output Calibration: Calibrate analog outputs (consult factory)
Linearizer Table: Allows user to select custom K-factors for different
points on the flow range
Diagnostics: Shows raw input frequency
About Bluetooth Device:Displays device type, Bluetooth name, firmware version, and serial
number
Disconnect: Used to disconnect from device
Exit: Closes application
System Settings
This menu allows users to scale the EDGE to output correct analog
signal and display correct flow rate in the desired units and time
base. It will also allow for filtering of the output. (Figure 4)
*After any option is changed press SET for it to take effect.
Use back button on phone to return to main screen.*
K-factor: The flow meter scaling factor in pulses/gal (found on
calibration sheet)
Digital Filter: Smooth out erratic input frequency. Only effects
analog signals. There are four options to choose from;
Figure 3: Setup Menu
Figure 4: System Settings

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oOff: No filtering
oLow: Most filtered, low sensitivity (Corner frequency ¼ Hz)
oMedium: Medium sensitivity (Corner frequency 1 HZ)
oHigh: least filtered, High sensitivity (Corner frequency 10 Hz)
Flow Units: Real time flow rate units
Flow Time Base: Real time flow time base unit
Max Flow Rate:The flow rate at which the analog output should be at its max
Max Flow Units: Selects what unit to scale flow in
*Flow units will affect Max Flow Rate. Verify both after changing flow units.
Max Flow Time Base: Can be set to Sec, Min, Hours, and Days.
*Time base will affect the Max Flow Rate. Verify max flow rate is correct after changing time
base.
Bluetooth Name: The name that will appear when searching for the device. Connection will
be lost after changing the Bluetooth name and will require reconnection. Name is limited to 19
characters. Some characters on the phone are invalid to use. Examples: $, %, ^ symbols.
Output Settings
This menu will provide the option to force one or both outputs to a
certain value. Along with this ability, Voltage output type will also be
selectable. (Figure 5)
To activate, move the slider to the right. Enter in desired forced
output and press SET to store information.
*Note: information will not be stored until SET is pressed and forced value
will revert back to previous value or state if output value is outside of the
range.
Forced output limitations: When forcing an output, it must be in
between the analog out specifications and will go to the third decimal
place.
Ex. 4-20mA output Forced output: 6.25mA
0-10V output Forced output: 7.5V
Figure 5: Output Settings

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Output Calibration
Warning modifying these outputs could result in inaccurate analog signals.
This menu is provided to adjust the EDGE analog output to correspond correctly with the
analog output of the input device.
* This menu is intended for use with slight output differences between the EDGE output and customer
input device. These values are factory calibrated before shipping to match meters that are calibrated
yearly.
Select Calibration Type: From this menu both mA and Voltage
outputs may be calibrated. (Figure 6)
Channel A – Voltage output
Channel B – mA output
1. Select which output type to be calibrated; mA or Voltage
2. Press Set Output Low,then enter in the value on user’s
device into Record Reading
a. Ex. If EDGE is being calibrated to a multimeter,
enter in reading from multimeter to Record
Reading
3. Press Record button
4. Now press Set Output High to calibrate the high end of the output
5. Enter in High reading from input device to Record Reading
6. Press Record button
7. Verify both Calibration high and low values are correct and press Set Calibration
8. Use back button on phone to navigate to the main menu
*Warning do not do 2 calibrations in a row. After calibration is finished, exit the app and restart
the device.
Figure 6: Output Calibration

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Linearizer
The linearizer function is designed to correct for devices that will
vary in a nonlinear way as a device changes in flow/frequency. It
can take nonlinear input and change it to a more linear analog
output. (Figure 7)
Ex. A meter that has a range of 0.5-2 GPM. If at 0.5 GPM (=100HZ) it has a
K-factor of 1800, at 1.5 GPM (=200Hz) it has a K-factor of 1850, and at 2.0
GPM (=300Hz) it has a K-factor of 1900. Using a linearizer would ensure
the most accurate results over the full range of flow.
Turn On Linearizer: Press the slider to turn the linearizer On and Off. The
Slider will turn pink to indicate it is On. Press the Set button for selection
to take place.
Changing Values: To change values in the table, press on the desired data point that needs changing.
Enter in new values and press the Set button to save the changes.
Entering New Values: To enter in values to the linearizer, press the (+) button. This will bring up the
option to type in a desired frequency and corresponding K-factor. After values are entered, press Add,
this should input the values into the table. Continue to the next Row and repeat the process for each
additional value needed. There are 10 rows available, but it is not required to fill them all. When desired
amount of points are entered, press SET to save the changes.
Deleting Values: To Remove a value, press the slider next to the row that needs to be delete. The slider
will turn Pink to indicate the row is selected. When all desired rows are selected, press the (- ) button
to remove them. Press Set to save the changes.
Computer Toolkit
The EDGE toolkit was designed to
allow users to connect to a PC and have
access to scaling and monitoring of the
Sensor. This program will allow users to input
Flow Units, Time Base, Max Flow Rates, and
K-factors. It will also allow the user to view
real time flow, force analog outputs to
specific values, and set up a linearizer table.
Figure 7: Linearizer Table
Figure 8: AW-Lake Application

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*A USB-C cable is required to connect to the device. This cable powers the unit and
no extra power supply is needed for Communication.
Getting Started
First thing that must be done is to download the toolkit from the AW-Lake website which can
be found at this link. (https://aw-lake.com/downloads/software/)Once downloaded, double
click the icon to open the application. (Figure 8.) Unscrew the lid of the sensor to gain access to
the USB-C connector on the sensor. Plug cable into the EDGE unit and a USB port on the
computer. Select COM Port device is on. If the device’s COM port does not appear click the
Refresh button. Next click Auto-Detect Device on COM Port to bring up the toolkit.
Toolkit Overview
The AW-Lake Toolkit is designed to help users
access all aspects of the EDGE sensor. From
selecting output modes, scaling analog outputs,
setting up a linearizer, and viewing real time
flow data. Depending on the version of sensor
the toolkit may look different. The toolkit reads
the version of the sensor and brings up all
available options. (Figure 9)
Communication Status
In the top right corner of the toolkit is a status
bar to show communication status of the unit.
There are 4 different messages it will display.
OK - Indicates device is working properly
Unsaved - Indicates a field has been modified but changes have not been saved
Error - Indicates the toolkit is not communicating with the device
Disconnected - Appears when you manually disconnect from the device
Figure 9: Toolkit

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K-Factor
To scale the sensor to the flow meter, a K-Factor must be
entered. The k-factor can be found on the meter’s calibration
sheet. Enter in the K-factor in pulses per gallon. (Figure 10)
Digital Filter
Smooths out erratic input frequency. This only effects the analog output signal. There are four
options to choose from;
oOff: No filtering
oLow: Most filtered, low sensitivity. (Corner frequency ¼ Hz)
oMedium: Medium sensitivity. (Corner frequency 1 HZ)
oHigh: least filtered, High sensitivity. (Corner frequency 10 Hz)
Scaling Analog Outputs (Figure 11)
Warning, first program in K-factor of the meter
Max Flow Rate: is the flowrate at which the analog output
should be at its max. Click Set for changes to take place
Max Flow Units: Selects what unit to measure flow in.
*Flow units will affect both the K-factor and Max Flow Rate.
Verify both after changing flow units. *
Max Flow Time Unit: Can be set to Sec, Min, Hours, and Days.
*Time base will affect the Max Flow Rate. Verify max flow rate is correct after changing time
base.*
Figure 10: Sensor Info
Figure 11: Analog Scaling

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Analog Output Type and Forced Outputs
(Figure 12)
The toolkit allows the user to select different Voltage output
ranges. This is done by selecting the pulldown menu and
choosing between the four options available. Click Set after
selection is made.
•0-5V
•1-5V
•0-10V
•2-10V
The toolkit also allows the user to force one or both analog outputs. This is done by checking
the box and entering in the desired value. Click Set when done to have outputs take effect.
*Note: information will not be stored until SET is pressed and forced value will revert back to previous
value or state if output value is outside of the range.*
Analog Output Calibration
Warning modifying these outputs could result in inaccurate analog outputs.
This menu is provided to adjust the EDGE analog output to correspond correctly with the
analog output of the input device.
* It is intended for use with slight output differences. These values
are factory calibrated before shipping to match meters that are
calibrated yearly. *
In the top left corner of the toolkit is the Setup tab. This is
where you will find the analog output Calibration.(Figure 13)
Channel A – Voltage Output
Channel B – mA Output
Figure 13: Output Calibration
Figure 12: Forced output and Type

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1. Select which output type to be calibrated; mA or Voltage
2. This will prompt a warning to verify calibration wants to be
done, click Next.
3. Enter in low reading from input device that FAC is being
calibrated to (Figure 14)
a. Ex. If EDGE is being calibrated to a multimeter,
enter in reading from multimeter to Current
Readout
4. Click Next
5. Enter in High reading from input device to Current
Readout (Figure 14)
6. Click Next
7. Calibration is now complete
Linearizer
The linearizer function is designed to correct for
devices that will vary in a nonlinear way as a device
changes in flow/frequency. It can take nonlinear input
and change it to a more linear analog output.
Ex. Looking at a meter that has a range of 0.5-2 GPM. If at
0.5 GPM (=100HZ) it has a K-factor of 1800, at 1.5 GPM
(=200Hz) it has a K-factor of 1850, and at 2.0 GPM
(=300Hz) it has a K-factor of 1900. Using a linearizer would
ensure the most accurate results over the full range of flow.
To access the Linearizer Table, click on the Setup tab,
followed by Linearizer Table. This will bring up the
table as pictured (Figure 15). Enable the linearizer
function by clicking the Enable Linearizer box at the bottom left of the window. The values in
the table cannot be modified. Rows can only be Added or Removed to change the table.
Figure 14: Output Calibration
Figure 15: Linearizer Table

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Proceed by clicking Add New Row and entering in desired K-factor and corrisponding
frequency. Continue doing this until all desired values are in. To Remove a row, click on the
colume to the left of the row and followed by Clear Selected Row button . Remember to click
Set Table after to apply changes.
*Note: there are 10 spots available but not all rows need to be filled in. Put values in desired amount of
rows and leave the rest at 0. *
Bluetooth Settings
In the Setup tab is the option to change the bluetooth
settings. Click Bluetooth settings, which will bring up a
separate bluetooth window (Figure 16). Enter in desired
name of the device and click Set. A success message should
appear, click OK.
Bluetooth Pin
This allows a user to setup a password to access the sensor
via the bluetooth app. To Enable, check the box and enter
in a 4 digit code followed by Set PIn
Upgrading the EDGE
The new EDGE is equiped with a bootloader which means that any updates to the firmware of
the device can be done without sending the device back to the factory.
In the Advance tab at the top left corner of the window will be and option to Upgrade
Mainboard Firmware. After clicking this selection a new window will open (Figure 17).
Figure 16: Bluetooth Name
Figure 17: Firmware Upgrade

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From here, click the button and navigate to the folder that contains the new .bin file.
Once selected click on Start Upgrade, after it is done a success message should appear (Figure
18). Click OK and the device will restart automatically.
Figure 18: Firmware Upgrade

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EDGE Sensor Modbus Registers
Name
Register Start
Address
Register
Count
Value
type
Value
Units/Description
Holding Registers (read-write register addresses, read function byte 0x03, write function byte 0x06 for single or
0x10 for multiple registers)
K-Factor
3000
2
32 Bit Float
Max Flowrate
3002
2
32 Bit Float
Flow Rate Time Base
4000
1
Int
0- Seconds
1- Minutes
2- Hours
3- Days
Flow Rate Volume Unit
4001
1
Int
0- Pulses
1- Ounces
2- Gallons
3- Barrels (Oil)
4- Cubic Centimeters
5-Cubic Meters
6- Mili-Liters
7- Liters
Max Flow Time Base
4002
1
Int
0- Seconds
1- Minutes
2- Hours
3- Days
Max Flow Volume Unit
4003
1
Int
0- Pulses
1- Ounces
2- Gallons
3- Barrels (Oil)
4- Cubic Centimeters
5-Cubic Meters
6- Mili-Liters
7- Liters
Input Registers (read-only register addresses, read function byte 0x04)
Raw Frequency Input
5000
2
32 Bit Float
(Hz)
Flow Rate (Users units)
5002
2
32 Bit Float

414.574.4300 | www.aw-lake.com
2440 W. Corporate Preserve Dr. #600 Oak Creek, WI 53154
©2020 AW-Lake Company. All rights reserved. Doc ID: EDGMAN121620