DYNANAV Dynaflow 2 Operating instructions

THIS MANUAL CONTAINS HELPFUL HINTS ON:
Installation and Operation Guide for
DynaFlow 2 System
DynaFlow 2 Control and Management system
DynaNav Systems Inc.
730 – 11731 Baynes Road
Pitt Meadows. BC, Canada, V3Y 2B3
www.dynanav.com

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73- - 11731 BAYNES, PITT MEADOWS, BC, CANADA, V3Y 2B3 PHONE: [phone]
WEB PAGE: www.dynanav.com EMAIL: [e-mail] FAX: [phone]
Overview of System
The DynaFlow 2™ system is a high end, High Speed GPS based electronic Flow Control and management system
specifically designed as a tool for the pilot to automatically control the flow of application of seeds, fertilizer and
liquid chemicals for farm and forestry applications. The system can be installed as a standalone system using the
DynaFlow 2 HMI Touchscreen with GPS. It also can be interfaced to other GPS Systems to give the flow data to
the DynaFlow 2. It has the capability to interface to KZ Flow Valves, Linear Electric Actuators, Electric Pumps and
Hydraulic Systems for liquid Flow Control. The DynaFlow 2 HMI also can be used and configured for Electric or
Hydraulic Motors for granular Rotary Vane Metering of seeds, etc.
A further feature of the System is that it includes a digital Boom Pressure Sensor to read the Boom pressure
directly. Further to this the System can be given a selected pressure you want to output a relay contact for marking
the GPS System exactly at the transition of the pressure on the boom. This is an extremely reliable and accurate
marking system.
Mounting
Touchscreen Processor Display (Optional for other GPS Manufacturers to
Connect to set Flow Rate parameters)
Overview
The DynaFlow 2 HMI Touchscreen display has all the electronics and GPS of the system in the
touchscreen display including the Flow Controller Electronics. It should be mounted to the aluminum panel
using 4 mounting Clips to attach if possible. It also has the NEMA 75 screws on the back if needed to
mount that way.
Placement
The Touchscreen should be mounted in a direction that is in direct line of sight for the Pilot to access during
flight with ease. If run in HOST mode from other GPS Manufacturers, the required Flow rate is supplied to
the DynaFlow system as well as is a secondary acre counter and flow indication of the system

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DynaFlow Pilot Display
Overview
All settings for the system is done on the DynaFlow HMI Touchscreen.
Action Buttons and Display Icons
1. GPS indicator - Displays the state of the GNSS signal.
2. Speed – Displays the Ground Speed of the Aircraft
3. Flow Gauge - Indicates the target flow, measured flow and the error percentage.
4. Spray Time - Gives the total time when spraying is on.
5. Time – Displays the local time as per settings for time.
6. Stopwatch – Resets the Spray Time to zero
7. Change Target Rate - Button that allows the pilot to set the target rate.

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8. Change Swath Width – Button the allows the pilot to change the Swath Width.
9. Reset or Clear – resets timer and saved application.
10. Working Mode Toggle Button - AUTO = Flow controller will adjust the flow. MANUAL = Valve will
remain fully open, and the pilot can adjust manually the flow with the by-pass.
11. Pressure Sensor - Displays the reading of the pressure sensor.
12. Swath Width – Displays the current Swath Width being used.
13. MORE… Button – MORE SETTINGS - Gives options for the system. See Below
14. FLOW Button – FLOW SENSOR AND VALVE page - Gives the Pilot the options for Which Flow
System he has installed, such as Electric Flow Valve or Hydraulic Motor driven Pump as well as
Calibration entr. Also, the Flow Motor can be tested and the Flow Meter reading can be seen here.
15. GPS Button – GPS RADIO RECEIVER - Gives the Pilot the number of satellites in use. (GPS +
GLONASS + WAAS) as well as to set the clock for local time or Universal time.
16. PRESSURE Button – PRESSURE SENSOR AND RELAY - To set the boom pressure required for
marking of the GPS System for As Applied Maps. This setting also tells the Flow Valve Motor to stop
below this number and to go active for control of the flow above this number.
17. HOST DEVICE Button – COMMUNICATION - For setting the system between DynaFlow Standalone
or communications from an External GPS system to set flow parameters. If Host is available, it will
automatically update the Swath Width, Speed and Rate.
18. SHUTDOWN – When finished application- be sure to use this button to Shutdown the DynaFlow 2
before turning off the aircraft Master Switch.

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MORE Button Options
1. Mode is to change the method of control for the DynaFlow such as whether I runs an Electric Motor
driven Valve or an Electric Motor driven Pump or even a Hydraulic Motor Driven Pump.
2. Units is where you can change whether the system is Metric or Imperial.
3. Max Speed is set the flow control for a Maximum Speed in which the flow control will not try to put out
more GPM or LPM.
4. Brightness is to control the brightness of the screen 1 to 10, 10 being the brightest.
5. Speed Mode has either Fixed Speed or GPS speed. Should the GPS signal fail, you can set this to
Fixed Speed to operate at for your nominal application speed. Other than that, the GPS signal will
adjust the flow to meet you Application Rate.
6. Fixed Speed is the nominal speed for your application.
7. Min. Speed is particularly useful for helicopters where the flow will not go lower than the Min. Speed. As
such the spray nozzles will still be putting out the correct spray pattern and droplet size.
8. App Version is where you can see the version of the application of the unit. You can periodically check
our website to see if there is an update that you can load onto a USB Data stick to UPDATE using this
button.

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GPS RADIO RECEIVER
GPS RADIO RECEIVER gives you the GPS RECEIVER STATUS, CURRENT LOCATION in Degrees,
Minutes and Seconds, TIME ZONE (which you can change) and GMT and LOCAL time.
Pressure Sensor
Pressure Sensor and Relay displays your current Flow Reading in either Gals/Minute or Liters/Minute.
Also this is where you set the transition point for the Relay to turn on/off the spray marking to your GPS. It is
important to make this RELAY ACTIVATION PRESSURE is somewhere between the operational Boom
Pressure and the Check Valve pressure.
The SENSOR READING OFFSET is for calibrating the zero point of the Pressure Transducer. For all the
later Transducers, the pressure should show -5PSI during Suck Back.

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HOST DEVICE
COMMUNICATION Page will show if a Host Device is connected. Displayed is the COMMUNICATION
STATUS whether it is connected. In the BYTES RECEIVED the number will keep increasing as long as
messages are coming from the Host Device. VALID PACKETS shows the number of valid packets while
the ERROR COUNT shows the number of Error Packets. If the communication is good, this ERROR
COUNT should stay at 0. The LAST SENTENCE shows the last packet sent by the Host Device.

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Wiring Harness Diagrams
Overview
The diagrams attached to appendix are for the interconnect wiring of the DynaFlow 2 system. All wires and
connectors on the harnesses are supplied and Mil Specification.
Supplied Parts List
Basic DynaFlow 2 Flow Control system contains: (Optional in brackets is for Standalone
operation and for other GPS manufacturers to interface to the DynaFlow)
Part Number .................................................................................. Description
1) DynaFlow 2 HMI/ECU ..................... DynaFlow 2 Touchscreen and Electronic Control Unit
2) DynaFlow 2 Install Harness ........... Installation wiring kit (special for each configuration)
3) GPS/GLONASS Antenna ............... Antenna with Cable to SMA connector (for standalone)
4) TDH33CG-00503B004-100 ............. Pressure Transducer, 0-5 VDC, 24 VDC, -5PSI - 100PSI
5) All other Valves and Flow meters are supplied as per the specifications of the Flow System.

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Specifications:
• GPS is a GNSS Engine is less than 0.1 second latency and presented at ten position solutions per second or better.
Specifications Environmental: Physical: DynaFlow 2 Touchscreen
Operating Temp: -30 to +50 degrees C. Width: 7.0 ins (17.85 cm)
Storage Temp: -40 to +70 degrees C. Height: 5.37 ins (13.64 cm)
Humidity: 5 to 95%, non-condensing. Depth: 3.0 ins (76.0 cm)
Weight: 2.6 lbs (1.2 kg)
Installation kit including antenna weights are dependent on installation, typically less than 3 lbs. (1.2kg)
12 – 30 VDC, negative ground (system requires less than 20 watts nominal and 84 Watts intermittent) Note: Specifications subject to
change without notice.
NOTE: All weights and sizes of the Flow Valves, Motors
and Flow Meters, etc. Weights and sizes are dependent
on the system that is being configured.
Appendix Follows:

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DynaFlow 2 Dimensions

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Cutout Size

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DynaFlow HMI Wiring Diagram Connections
NOTE:
Enter/Advance Blue wire is for future use and will require being grounded for activation.
Spray ON (Spray Active) Orange wire is normally used in helicopters to tell the Flow System to start controlling
for flow when this line goes high (12 to 28 Volts DC). This is just in case the valve gets closed during the helicopter
slowing down while spray is on. Normal operation of the Valve requires the boom pressure to go higher than the
Boom Pressure setting to go active.

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Flow Control Installation Guide
Valve and Flow Meter
Flow Motor and Flow Meter Placement
The Flow Control Valve should generally be placed downstream of the on/off/bypass valve, however, if that
is not physically possible then it can be placed before the Bypass On/Off valve. See some configuration
diagrams in Appendix.
The Flow Meter ideally should be placed either right before Flow Control Valve or at least 18” downstream
from the Flow Control Valve. This is to minimize the flow turbulence on the Flow Meter, as such, if
downstream from any valve (On/Off) or pump, it should be kept as far away as possible.
Selecting the right size of Flow Meter and Flow Control Valve
Flow Control valve and Flow Meter size should be selected for the mid-range of your operating flow. If the
Flow Control valve is too large, it will try to control the complete flow in a very tiny range of the valve
movement. As such, it will not regulate properly.
To calculate your maximum and minimum Flow Rates, you can enter the values into the Flow Calculator on
our website on the GPM_Calculator tab of the Flow Control Calculator found here
https://dynanav.com/support/calculators/
By calculating your GPM or LPM for the full operating range of the speed, Swath Width and Gallons per
Acre or Liters per Hectare, you will determine the correct Flow Valve and Flow Meter to install. The size of
the Flow Meter should be selected to fit the range of your calculated GPM or LPM.
Determine Operating Flow of system
Determine the actual operating Gallons per Minute or Liters per Minute (GPM or LPM) of the system by the
following:
1. Do your Test Flights while the Flow Control Valve is fully open and with the desired nozzles installed on
the boom,
2. Looking at the Flow Control system showing Flow in either GPM or LPM, at maximum speed for the
maximum pump pressure (fan operated pump) note the value of the GPM or LPM as Maximum flow. At
this point, the Boom Pressure should be above the suggested nozzle operating pressure.
3. Find out the minimum full open Flow of the system by reducing the speed of the aircraft to absolute
minimum and again make sure the boom pressure is in the operating range of the spray nozzles.
Boom Pressure
Your Boom Pressure should be operated in the range of the specifications of the nozzles for the correct
spray droplet size.
Boom pressure should always be well above the Check Valve pressure so that the Flow control variance
will be well within its range. This will require proper selection of Spray Nozzle types and number of nozzles
to get in range of your operating speeds and operating flow.
Boom Pressure Sensor (Digital), if installed will give a digital feedback of your boom pressure. If using a
DynaNav systems DynaFlow Digital Boom Pressure sensor, you can set the pressure at which the GPS
marking will be on/off. This pressure setting should be significantly above the check valve pressure as well
as significantly below the operating pressure range of the boom.

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Flow Control Methods
Flow Valves
Flow Valves are usually Ball Valves with electrical actuator motors (rotary or linear) or hydraulic actuator. By
changing the opening of the valve, the flow of liquid is varied. Note that flow is proportional to boom
pressure. Also control of Gas Motor pumps using linear motor actuator.
Flow Motors – Electric and Hydraulic
Flow motors will be connected directly to the Pump. By varying the RPM of the pump, the Liquid flow can
be controlled directly without the need for a flow valve. These systems can not only control flow, but also
control the on/off of flow. If tank mixing is necessary, then a Bypass on/off should also be installed.
Fan Control
Some Fans have a variable pitch system. These can be set up to have an actuator to control the pitch thus
control the flow of the liquid. Usually, these systems have a fan brake for On/Off control.

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Configurations – Some Examples