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