AGROWTEK SXF Machine Grow Control Precision Electronic Water Flow Meter Instruction Manual
- May 15, 2024
- AGROWTEK
Table of Contents
INSTRUCTION MANUAL SXF
**Precision Electronic Water Flow Meter
KEEP THESE INSTRUCTIONS
REV 12/23
Shown with optional LCD Display Interface**
Description
GrowControl™ SXF series precision digital sensor transmitters and controllers for inline flow and temperature feature an advanced flow sensor with no moving parts. Vortex flow meters create eddies as water flow through which are picked up and converted to a flow reading by an accoustic sensor. SXF flow meters have no moving parts and won’t jam or clog with small debris and minor sludge. Color LCD display and button interface model allows instant access to sensor readings, guided calibration, alarms, historical graphing and more. Internal memory logs over 20,000 data points per sensor. Connects to Aggrotech’s GrowControl™ GCX Cultivation Controllers as part of a complete facility control solution, or via MODBUS for custom PLC applications.
Dimensions
Do NOT connect the GrowNET port to Ethernet networks.
Installation Instructions
Install with the transmitter in the orientation shown in dimension drawings
with the temperature probe connections facing down to reduce the risk of water
permeating the enclosure.
Avoid locations with dripping water or heavy splash risk; the transmitter is
best kept dry for longest life and highest accuracy. Mounting in an enclosure
is recommended in extreme humidity or splash/spray locations.
Mounting the Transmitter
Wall mounting tabs are provided for installing against a vertical wall
surface.
- Measure out the hole locations per the dimensions, or mark the holes using the transmitter as a template.
- Drill holes and install anchors (if required, not included.) Keep the transmitter away from dust during work.
- Install the transmitter to the wall surface using appropriate screws.
DIN Rail Mounting Kit
A DIN rail mounting kit installs onto the mounting flanges with the provided hardware for mounting the device on a standard DIN rail.
- Screw the DIN rail brackets onto the fl anges using the provided screws.
- Snap the transmitter into place on a DIN rail.
- Use the latches on the DIN brackets to release the transmitter from the DIN rail.
PBX Probe Manifold
A compression gland fi tting or a complete probe manifold (PBX-110) is
available for the temperature sensor probe. It is recommended to install the
temperature sensor downline from the flow meter unless another location is
desired for monitoring. ring.
Connecting Sensor Probes
The temperature probe is connected by a screw terminal block on the bottom of
the unit; make the connections according to the label on the transmitter.
The terminal block may be removed for easier wire installation or for service.
The flow sensor plugs into the right side of the unit. Depress the latch on
the plug to release and remove the cable from the unit.
NOTE:
- Temperature probes with green wire connect to the “CLR” terminal.
LCD Menu Operation Instructions
SXF models with the optional 3-button/LCD display interface may be used for
stand-alone monitoring applications or as part of a control solution.
Connect to Aggrotech’s GrowControl™ GCX Cultivation Control Systems for
advanced monitoring, logging, alerting and control.
The main screen displays the real-time sensor readings from the attached sensors. Each button is labeled at the bottom of the display to describe it’s function on the current screen or menu.
High / Low History
Simple minimum and maximum recorded values are stored until the user resets
the values to the current readings. To view the minimum and maximum values
since the last reset, press the button labeled H/L.
To clear the min/max history, press the RST button to reset. The min and max
values will all be set to the current readings and will update with higher or
lower readings as they occur.
Graphing
The display can graph the most recent 120 data points from the sensor’s
internal data point memory. With the default logging interval of 60 seconds,
the graph displays the last two hours of data.
The sensor value is plotted in green. Temperature, if overlaid on the plot, is
red.
Alarm levels as set by the user are plotted in yellow.
Pressing the RFH button refreshes the data and replots the graph.
Main Menu
The main menu is how the alarms are set, sensors are calibrated and general
settings such as time, date and units are configured.
If a dosing pump is directly connected to the SXHM GrowNET port, the pump
settings are also accessed by the main menu.
Use the UP or DWN buttons to navigate the menu.
Use the ENT button to enter a selection.
Alarms Menu
High and low alarm set points may be configured for each sensor value to
activate an internal buzzer or send alerts with the optional wifi module.
The out-of-range value will be displayed in red to indicate the cause for the
alarm.
Additionally, alarm limits are plotted on the graphs to indicate values are
within the desired range.
Alarms Configuration
1. Select ALARMS from the main menu| 2. Select a sensor to configure set points.| 3. Select the setting to adjust.| 4. Adjust to the desired value. Hold UP or DWN to jog the value.
Alarm Buzzer
- Select ALARM: OFF
- Select SET ON then press BACK to exit.
To disable the alarm buzzer, set the alarm to OFF.
Calibration Menu
Calibration can be performed for each sensor with the LCD interface using
either standard calibration wizards, or advanced manual calibration methods
for non-standard calibration solutions.
The date of the last calibration for each sensor is stored in memory and
displayed at the start of each calibration wizard.
Clear Calibration
Calibration can be restored to factory defaults by selecting CLEAR ALL.
- Select CLEAR ALL from the calibration menu.
- Press YES to restore factory calibration.
Temperature Calibration
1. Select CALIBRATE from calibration menu| 2. Press NEXT to continue.| 3. Adjust to the desired value. Hold ENT to jog the value by 10x.| 4. Confi rm the new reading or press NO.
Flow Calibration
Flow calibration is done on the LCD by running the fl ow at a known rate and setting the value in the calibration field to match.
1. Select CALIBRATE from calibration menu.| 2. Follow the instruc- tions
then press NEXT.| Turn on water flow at a known fixed
flow rate.
3. Use the +0.1 and -0.1 field to adjust to the correct value, then select
BACK.
4. Use the +0.1 and -0.1 field to adjust to the correct value, then select
BACK.
Setup Menu
The setup menu is where the time and date are set, the units are configured, logging interval is adjusted and advanced communications settings are available.
Time / Date
Sensors include a precision real-time clock with battery back-up for time- stamping the data log information with the time and date. The last calibration for each sensor is also time stamped.
1. Select TIME/DATE from the setup menu.| 2. Select TIME or DATE to adjust.|
3. Use NXT to select the value to adjust.
Use + to increment the value.| 4. Use EXT to exit the menu.
Units
Temperature and Conductivity may be displayed in alternate units.
Select a sensor value to change the default display and working units.
Configure temperature units: Temperature may be displayed in °F or °C. Note: Check alarm settings when converting temperature units.
- Select TEMPERATURE from the units menu.
- Select the desired units and press ENT.
Confi gure conductivity units: Conductivity may be displayed in default
units of microSiemens (uS) or total dissolved solids in parts per million
(ppm.)
The TDS conversion factor used by this meter is 500.
TDS ppm = uS x 0.5
- Select EC from the units menu.
- Select the desired units and press ENT.
Logging Interval
Adjust the interval for recording data points in the onboard me mort.
Acceptable values are from 1 – 65535 seconds.
21,600 data points can be stored for each sensor value. The most recent 120
data points are shown on the graphical history.
The entire data history may be downloaded from the sensor to a .csv fi le with
the LX1 USB AgrowLINK and free software.
Note: 60 second intervals = 15 days of data storage.
- Select LOG INTERVAL from the setup menu.
- Adjust the value then select BACK.
COMM Mode
COMM mode specifi es whether the sensor is a normal passive device or “mini-
master” device.
NORMAL Use with GrowControl master controller systems or stand-alone and data
logging applications.
MINI-MASTER Use with MDX mini-dosing system.
(GrowNET crossover adapter required.)
- Select COMM from the setup menu.
- Select a mode and press ENT.
Device Address
Sensors are digitally addressable from 1-249 and will be assigned an address
automatically by Agrowtek’s control systems, or can be configured manually for
MODBUS applications via the menu.
NOTE : All of Agrowtek’s devices use address 254 as a broadcast address.
- Select DEVICE ADD from the setup menu.
- Adjust the value then select BACK.
Manufacturing Info
Manufacturer information such as serial number, date of manufacture, hardware and firmware versions can be read from the MFG INFO page.
- Select MFG INFO from the setup menu.
- Press EXIT to return.
Display Back Light Timer
The display back light can be programmed to turn off after a specified time of
inactivity from the last time a button is pressed.
The delay can be set from 1-255 minutes, or set to 0 to disable the backlight
timer and keep the display on continuously.
Connection to USB AgrowLINK
LX1 USB Agro LINK connects Aggrotech’s devices to a computer’s USB port for:
- Firmware Updates
- Calibration
- Confi guration
- Data Logging Download
- More
Connection to GrowControl™ GCX
All GrowNET™ devices are connected using standard CAT5 Ethernet cable with
RJ-45 connections.
Devices can be connected directly to the GrowNET™ ports on the bottom of the
controller, or through HX8 GrowNET™ hubs. It is typical to simplify cabling by
locating hubs centrally in hall ways and rooms allowing single runs from an
8-port device hub back to a central hub or back to the controller.
Refer to the GCX controller manual for details on adding the device to the system.
GrowNET™ Hubs
HX8 GrowNET ™ hubs expand a single port into eight more ports.
Hubs can be daisy-chained to form a network of up to 100 devices per GrowNET™
bus. Individually buffered port transceivers provide excellent signal
integrity and extended communication strength and range.
Hubs provide up to 1A of power for operating sensors and most relays directly
over the CAT5 cable. A DC jack on the hub provides 24Vdc power to the ports
from the included wall power supply. A terminal block power option is also
available.
Installation Notes
NOTICE
GrowNET™ ports use standard RJ-45 connections but are NOT compatible the
Ethernet network equipment.
Do not connect GrowNET™ ports to Ethernet ports or network switch gear.
DIELECTRIC GREASE
Dielectric grease is recommended on RJ-45 GrowNET™ connections when used in
humid environments.
Place a small amount of grease onto the RJ-45 plug contacts before inserting
into the GrowNET™ port.
Non-conductive grease is designed to prevent corrosion from moisture in
electrical connectors.
- Loctite LB 8423
- Dupont Molykote 4/5
- CRC 05105 Di-Electric Grease
- Super Lube 91016 Silicone Dielectric Grease
- Other Silicone or Lithium based insulating grease
Connection to MODBUS RTU
RS-485
Use the LX2 ModLINK to connect MODBUS devices to the GrowNET™ port.
Serial Speed & Format
The default serial data format for the LX2 ModLINK interface is: 19,200 baud,
8-N-1.
Alternate speeds and formats between 9,600 – 115,200 baud may be configured
with the free AgrowLINK PC utility using a LX1 USB AgrowLINK and the cross-
over adapter supplied with the LX2 ModLINK.
See MODBUS manual for more information.
MODBUS Manual
Supported Commands
0x03 Read Multiple Registers
0x06 Write Single Register
A request to use a function that is not available will return anillegal
function exception.
Register Types
All registers are 16 bits wide with addresses using the standard MODICON
protocol. Floating point values use the standard IEEE 32-bit format occupying
two contiguous 16 bit registers. ASCII values are stored with two characters
(bytes) per register in hexadecimal format.
Sensor Value Registers
Sensor values are available in integer or fl oating point formats depending
on the register requested (see map.)
Sensor # | Type | Integer S | Range |
---|---|---|---|
1 | Temperature | x100 | -2000 – 6000 (-20 – 60°C) / -400 – 14000 (-4 – 140°F) |
2 | Flow | x10 | 0 – 400 (0 – 40 gpm) / 0 – 1500 ( 0 – 150 lpm) |
For example: an integer temperature value of 2417 is equal to a temperature reading of 24.17°C.
Calibration Registers
Calibration registers are 16-bit signed integers for the purpose of
calibrating the sensor values or analog output channels.
Calibration may be achieved by writing the desired calibrated value to the
associated register.
Writing to the calibration registers automatically invokes the calibration
routine for that register.
Zero (Off set) Calibration
Zero calibration is an arithmetic positive or negative correction to the
sensor reading.
Operations performed using the off set register are:
-Temperature calibration
To set the temperature to a calibrated value of 25°C, write the value “2500.”
Span Calibration
Span, or slope calibration, corrects the slop of the sensor reading at a
second point, away from the zero calibration. Operations performed using the
span register are:
-Flow Calibration
To set the flow rate, write the calibrated flow rate (x10) to the calibration
register.
MODBUS Holding Registers
Parameter | Description | Range | Type | Access | Address |
---|---|---|---|---|---|
Address | Device Slave Address | 1 – 247 | 8 bit | R/W | 40001 |
Serial# | Device Serial Number | ASCII | 8 char | R | 40004 |
DOM | Date of Manufacture | ASCII | 8 char | R | 40008 |
HW Version | Hardware Version | ASCII | 8 char | R | 40012 |
FW Version | Firmware Version | ASCII | 8 char | R | 40016 |
Toggle Units | Toggle sensor units | 1 – 4 | 16 bit, unsigned | W | 41002 |
Sensor Reading, Integer | Temperature | -2000 – 6000 (-20 – 60°C) | 16 bit, | ||
signed | R | 40101 | |||
Flow | 0 – 400 / 0 – 1500 | 40102 | |||
Sensor Reading, Float | Temperature | -20.00- 60.00 °C | 32 bit, floating pt | R |
40201
pH| 0 – 40 gpm / 0 – 150 Ipm| 40203
Calibration Input Zero| Temperature| See integer ranges above.| 16 bit,
signed| W| 41101
Calibration Input Span Point| Flow| See integer ranges above.| 16 bit, signed|
W| 41202
A request to read or write a register that is not available will return an illegal address exception.
Maintenance
Sensor probes require periodic cleaning, reconditioning and calibration for
reliable service.
See calibration section for details on performing calibration service after
cleaning.
Probe Cleaning
Coating of the pH or ORP bulbs can lead to erroneous readings including
shortened span (slope).
Coatings and blockages in the EC sensor can cause incorrect readings.
The type of coating will determine the cleaning technique.
Soft coatings can be removed by vigorous stirring or by the use of a squirt
bottle.
Organic chemical or hard coatings should be chemically removed. 5-10%
hydrochloric acid (HCl) soak for a few minutes and often removes many
coatings.
If cleaning does not restore pH sensor performance, reconditioning may be
tried.
pH Probe Reconditioning
When reconditioning is required due to electrode aging the following chemical
treatments can be tried.
They are presented in the order of the severity of attack on the pH glass and
may not improve (and in some cases actually further deteriorate) electrode
performance.
DANGER: Use proper precautions when handling these hazardous chemicals.
Ammonium bifl uoride and HF (hydrofluoric acid) are extremely hazardous and
should only be used by qualified personnel.
Reconditioning Method 1
Immerse the electrode tip in 0.1 N HCl for 15 seconds, rinse in tap water and
then immerse tip in 0.1 M NaOH for 15 seconds and rinse in tap water. Repeat
this sequence three times and then recheck the electrode’s performance. If
performance has not been restored, try method two.
Reconditioning Method 2
Immerse the tip in a 20% solution of NH4F-HF (ammonium bifl uoride) for two to
three minutes, rinse in tap water and recheck performance. If performance has
not been restored, try method three.
Reconditioning Method 3
Immerse electrode tip in 5% HF for 10-15 seconds, rinse well in tap water,
quickly rinse in 5N HCl, rinse well in tap water and recheck performance. If
performance has not been restored, it is time to get a new probe.
Technical Information
Specifications
Power | 5-24Vdc, ~2W (5W w/LCD) |
---|---|
Max Cable Distance | 1000ft |
Optional Interface | LCD w/3 Buttons |
Temperature Range | -20 – 60°C |
Temperature Accuracy | ±2°C, 0.01° resolution |
pH Range | 0 – 14pH |
pH Accuracy | ±0.02pH, 0.01pH resolution |
Conductivity Range | 0 – 7,000 uS (0 – 3500ppm) |
0 – 80,000 uS (high salinity / salt water model)
Conductivity Accuracy| < 2000uS ±20uS, >2000uS ±50uS; 2uS resolution
+ORP Range| -1000 – +1000mV
+ORP Accuracy| ±10mV, 1mV resolution
4-20mA Output Resolution| 12 bit , 0.005mA
Interface| GrowNET™ or MODBUS RTU
Storage and Disposal
Storage
Store equipment in a clean, dry environment with ambient temperature between
10-50°C.
Disposal
This industrial control equipment may contain traces of lead or other metals
and environmental contaminants and must not be discarded as unsorted municipal
waste, but must be collected separately for the purpose of treatment, recovery
and environmentally sound disposal.
Wash hands after handling internal components or PCB’s.
Warranty
Agrowtek Inc. warrants that all manufactured products are, to the best of its knowledge, free of defective material and workmanship and warrants this product for 1 year from the date of purchase. This warranty is extended to the original purchaser from the date of receipt. This warranty does not cover damages from abuse, accidental breakage, or units that have been modifi ed, altered, or installed in a manner other than that which is specifi ed in the installation instructions. Agrowtek Inc. must be contacted prior to return shipment for a return authorization. No returns will be accepted without a return authorization. This warranty is applicable only to products that have been properly stored, installed, and maintained per the installation and operation manual and used for their intended purpose. This limited warranty does not cover products installed in or operated under unusual conditions or environments including, but not limited to, high humidity or high temperature conditions. The products which have been claimed and comply with the aforementioned restrictions shall be replaced or repaired at the sole discretion of the Agrowtek Inc. at no charge. This warranty is provided in lieu of all other warranty provisions, express or implied. It is including but not limited to any implied warranty of fi tness or merchantability for a particular purpose and is limited to the Warranty Period. In no event or circumstance shall Agrowtek Inc. be liable to any third party or the claimant for damages in excess of the price paid for the product, or for any loss of use, inconvenience, commercial loss, loss of time, lost profi ts or savings or any other incidental, consequential or special damages arising out of the use of, or inability to use, the product. This disclaimer is made to the fullest extent allowed by law or regulation and is specifi cally made to specify that the liability of Agrowtek Inc. under this limited warranty, or any claimed extension thereof, shall be to replace or repair the Product or refund the price paid for the Product.
© Agrowtek Inc.
www.agrowtek.com
Technology to Help You Grow™
Documents / Resources
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AGROWTEK SXF Machine Grow Control Precision Electronic Water Flow
Meter
[pdf] Instruction Manual
SXF Machine Grow Control Precision Electronic Water Flow Meter, SXF, Machine
Grow Control Precision Electronic Water Flow Meter, Control Precision
Electronic Water Flow Meter, Precision Electronic Water Flow Meter, Electronic
Water Flow Meter, Water Flow Meter
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References
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