Pyxis FS-100 Series User manual

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Table of Contents
1. Introduction.................................................................................................................3
1.1 Main Features.................................................................................................................3
2. Specifications...............................................................................................................4
3. Unpacking Instrument .................................................................................................5
3.1 Standard Accessories...................................................................................................... 5
3.2 Optional Accessories ......................................................................................................5
4. Dimension & Installation..............................................................................................5
4.1 FS-100 Series Dimension(mm) .......................................................................................5
4.2 Mounting Location.........................................................................................................6
4.3 Panel Mounting.............................................................................................................. 6
4.4 Nano-Flow Control Module............................................................................................7
5. FS-100 Electrical Connection ........................................................................................8
6. FS-100 Operation.........................................................................................................9
6.1 Key Function.................................................................................................................9
6.2 Main Screen .................................................................................................................9
6.3 Trend Chart ................................................................................................................ 10
6.4 Alarm Settings ............................................................................................................ 10
6.5 Set the Operating Mode for the FS-100......................................................................11
6.6 Flow Regulating Valve Output - 4-20 mA Span ........................................................... 12
6.7 Flow Measurement Output - 4-20 mA Span ...............................................................12
6.8 Communication Settings ............................................................................................13
6.9 Calibration..................................................................................................................13
6.9.1 Two-Point Calibration.............................................................................................. 13
6.9 Display Screen Orientation Settings ........................................................................... 14
6.10 Device Information................................................................................................... 15
7. Communication Using Modbus RTU ...........................................................................15
8.Contact Us..................................................................................................................15

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Warranty Information
Confidentiality
The information contained in this manual may be confidential and proprietary and is the property of Pyxis
Lab, Inc. Information disclosed herein shall not be used to manufacture, construct, or otherwise reproduce
the goods described. Information disclosed herein shall not be disclosed to others or made public in any
manner without the express written consent of Pyxis Lab, Inc.
Standard Limited Warranty
Pyxis Lab warrants its products for defects in materials and workmanship. Pyxis Lab will, at its option, repair
or replace instrument components that prove to be defective with new or remanufactured components
(i.e., equivalent to new). The warranty set forth is exclusive and no other warranty, whether written or oral,
is expressed or implied.
Warranty Term
The Pyxis warranty term is thirteen (13) months ex-works. In no event shall the standard limited warranty
coverage extend beyond thirteen (13) months from the original shipment date.
Warranty Service
Damaged or dysfunctional instruments may be returned to Pyxis for repair or replacement. In some
instances, replacement instruments may be available for short duration loan or lease.
Pyxis warrants that any labor services provided shall conform to the reasonable standards of technical
competency and performance effective at the time of delivery. All service interventions are to be reviewed
and authorized as correct and complete at the completion of the service by a customer representative or
designer. Pyxis warrants these services for 30 days after the authorization and will correct any qualifying
deficiency in labor provided that the labor service deficiency is exactly related to the originating event. No
other remedy, other than the provision of labor services, may be applicable.
Repair components (parts and materials), but not consumables, provided during a repair, or purchased
individually, are warranted for 90 days ex-works for materials and workmanship. In no event will the in-
corporation of a warranted repair component into an instrument extend the whole instrument’s warranty
beyond its original term.
Warranty Shipping
A Repair Material Authorization (RMA) Number must be obtained from Pyxis Technical Support before any
product can be returned to the factory. Pyxis will pay freight charges to ship replacement or repaired
products to the customer. The customer shall pay freight charges for returning products to Pyxis. Any
product returned to the factory without an RA number will be returned to the customer. To receive an RMA
you can generate a request on our website at Request Return or Repair - Pyxis Lab, Inc. (pyxis-lab.com)
Pyxis Technical Support
Contact Pyxis Technical Support at [phone] ext. 2., or by emailing [e-mail]

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1. Introduction
The new Pyxis FS-100 series are state-of-the-art ultrasonic
flowmeters that operate on the principle of transit time
difference with a measurement range of 0 –3,000 mL/min and
resolution of 1mL. In this flow measurement method, the
propagation speed of ultrasonic waves downstream is faster
than upstream, and the transit time difference is directly
proportional to the flow rate.
The FS-100 series flow meter is perfectly suited for flow
measurement and is offered in two liquid end materials of
construction, for standard water and highly corrosive aqueous
solution metering applications. The sensors advanced PCB
design offers built-in temperature compensation to eliminate
the effect of temperature with instantaneous, accumulated,
and controlled water flow based on user setpoint within the
sensor itself.
The FS-100 series flow meter is powered by a 24 VDC/1 W
power supply and provides both 4–20 mA and RS-485 Modbus
output signals for connection to any OEM controller, PLC or
DCS.
1.1 Main Features
•Real-time flow rate trend chart
•Dual flow meter signal outputs for valve control and flowrate: Isolated 4–20 mA and RS-485 Modbus.
•Ultrasonic flow meter with local display capable of 0 –3,000 mL/minute measurement (+/- 1mL).
•Built in temperature sensor automatically compensates the effect of temperature on flowrate.
•Monitor and display instantaneous flowrate and accumulated volume.
•Large color LED indicator for operational state indication.
•CPVC Liquid End for Common Water Flow Measurement Applications (FS-100)
•Ryton PPS / GF Polymer Liquid End for Highly Corrosive Solution Flow Measurement Applications (FS-101)
FS-100 Series Ultrasonic Flow Meter

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2. Specifications
Table 1.
*NOTE* (1) The flow control module supports only one 4-20mA (flow rate) output for connection to another device. A second 4-
20mA output is internally connected and used to control the regulating valve. Specifications are subject to change without notice.
(2) Refer to Ryton PPS chemical compatibility prior to use for measurement of any chemical or corrosive aqueous solution.
Item
FS-100
FS-101
P/N
54200
58542
Supported Fluid
Water
Corrosive Aqueous Solutions
Supported Fluid Temperature
4oC ~ 49oC (40oF ~120oF)
Wet End Material of Construction
UPVC
Ryton PPS + GF Polymer
Sample Inlet Pressure
1.5 –100 psi (0.01 –0.689MPa)
Sample Inlet /Outlet
1/4 - inch OD and 1/2 - inch FNPT
Flow Path Inner Diameter
5mm
FS-100 Rated Flow Range
0 –3,000 mL/min
FS-100 Resolution
1mL/min
FS-100 Maximum Error
±1% of the value
FS-100 Display
1.44” Color 128 x128 Resolution
FS-100 Analog Outputs (1)
1# 4-20mA for flow rate
2# 4-20mA for regulating valve
FS-100 Digital Output
RS-485
Power Supply
24V DC, 1W
Panel Operation Temperature
32 –122 oF (-0 –50
oC)
Panel Storage Temperature
-4 –158 oF (-20 –70 oC)
Dimension (H x W x D)
170mm H x 50 mm W x 61.5mm D
Weight
~ 600 g
Humidity
5 –95% No Condensation
Protection
IP-65
Regulation
CE / RoHS

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3. Unpacking Instrument
Remove the instrument and accessories from the shipping container and inspect each item for any damage
that may have occurred during shipping. Verify that all items listed on the packing slip are included. If any
items are missing or damaged, please contact Pyxis Customer Service at servic[email protected]
3.1 Standard Accessories
•One FS-100 ultrasonic flow meter (P/N: 54200) or One FS-101 ultrasonic flow meter (P/N: 58542)
•Includes mounting materials.
•Includes one CE-FE-4.9 Flying Lead Cable with Female 7-Pin Adapter –1.5m/4.9 feet (P/N: 50762)
•The full instrument manual is available for download at Support Documents - Pyxis Lab, Inc. (pyxis-lab.com)
3.2 Optional/ Replacement Accessories
The following optional accessories can be ordered from Pyxis Customer Service ([email protected]) or Pyxis E-
Store at https://pyxis-lab.com/shop/
Table 2.
Accessory Name
Part Number
CE-FE-4.9 Replacement Flying Lead Cable w/Female 7-Pin Adaper –1.5m/4.9ft
50762
Nano-Flow Control Module FS-100 Ultrasonic Flow meter + Regulating valve
21329
4. Dimension & Installation
4.1 FS-100 Series Dimension(mm)
Figure 1.

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4.2 Mounting Location
When measuring liquids, the flow meter should be installed in a vertical pipe that the fluid flows from the
bottom up.
Figure 2.
4.3 Panel Mounting
Mounting Materials (included)
•2 × M4 screws
•2 × M4 Spring pad
•2 × M4 Flat pad
•2 × M4 Nuts
Panel Mounting Procedure:
1. Use the mounting plate on the back of the FS-100 as a template to mark the positions of two holes.
2. Drill the holes: Ø4.2mm
Figure 3.

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3. Install the FS-100 using the mounting materials and tighten the screws snuggly.
Figure 4.
4.4 Nano-FlowTM Control Module
Sold separately, the Pyxis Nano-Flow Control Module is a stand-alone water flow measurement and control
solution designed for use in critical cooling and process-water sample flow applications. This unique
platform provides precise flow measurement and regulation and may be installed upstream of inline sensors
in water systems that are subject to pressure and flow variation challenges.
The Nano-Flow module is offered in a convenient and easy to integrate micro-panel mounted format for
rapid installation, setup and maintenance. The micro-panel design is equipped with the Pyxis FS-100
ultrasonic flowmeter with display, which directly controls a pre-mounted regulating valve through a simple
to program user interface.
Table 3.
Figure 5.
Item
P/N
Description
Nano-FlowTM Control Module
21329
FS-100 Ultrasonic Flow meter + Regulating valve

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5. FS-100 Series Electrical Connection
The FS-100 series flowmeters provide 2x 4-20mA and 1x RS-485 output signals. The #1 4-20mA output (white
wire) provides the sensor flow signal 0 –3,000mL/minute to be connected to a receiving device. The #2 4-
20mA output (green wire) provides the user defined flow control setpoint for operating a flow regulating valve
capable of 4-20mA input. Users should connect the CE-FE-4.9 7-Pin Explosion-proof Female Adapter / Flying
Lead Cable (P/N 50762) that is provided with each FS-100 flowmeter package and refer to the wiring table
below for proper wiring. *NOTE* Pyxis offers outlet plug in power supply adapter cables in both USA-Type A and
EU-DIN formats for those desiring to power the FS-100 series via outlet. See Optional/Replacement Accessories
Section 3.2 for details.
Table 4.
Wire Color
Designation
Red
24V +
Black
Power Ground / 4-20 mA-
White
1# 4-20 mA+ for flow rate
Green
2# 4-20 mA+ for flow control valve
Blue
RS-485 A
Yellow
RS-485 B
Silver
Earth Ground
FS-100 Flowmeter 4-20mA Scaling
Unit of Measure
4mA Value
20mA Value
Flow Rate(mL/min)
0 mL/min
3000 mL/min

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6. FS-100 Series Operation
6.1 Key Function
LED Status Indicator Light
The status LED is used for a quick visualization of the flowmeter status.
LED Behavior
Status
Green
Normal Running
Red
Alarm Information
6.2 Main Screen
Main Screen Description
NO.
Description
1
Flow Detection Mode (1)
2
Working Status (same color as LED status indicator)
3
Flow Rate Value
4
Timer (2) (unit: auto range)
5
Unit of measured flow value
6
Accumulated Flow Value (3) (unit: auto range)
(1) R= Average Flow Rate Mode / M= Instantaneous Flow Rate Mode / C= Flow Rate Control Mode
*NOTE* For C-Mode please refer to Section 6.5 for programming details.
(2) The Timer feature is enabled when the FS-100 is powered on. It can be set by pressing the key.
-Pause or Resume the Timer Display: Press key momentarily and release.
-Reset the Timer: Press and hold key for about two seconds.
(3) Calculation of the accumulated flow and Timer work synchronously, i.e., when the Timer is pause, pause display
value; when the timer is resume, normally display the value; when the Timer is reset, clear the value.
Enter Key
-Main screen Setting Menu.
-Confirms and saves the input values.
Left / Right Key
-Main screen Trend Chart.
-Move the cursor to the left or right.
-Turn pages on the screen.
Up / Down Key
-To increase or decrease a displayed number value.
-Jump up and down in the operating menu.

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6.3 Trend Chart
From the main screen, Press or to the trend chart display. Flow values will be displayed as a line graph
to show the real-time trend. Press or to return to the main screen.
Figure 6.
6.4 Alarm Settings
Press or in the setting menu and select [Alarm]. From Alarm settings screen, press or to adjust the
displayed number, then press to move the cursor to “Yes”. *NOTE* To enable the alarm function, the
Detection Time(s) must ≥1 second.
Figure 7.
The Upper Alarm (Alarm HL) and Lower Alarm (Alarm LL) limit are constantly compared with flow rate value.
Once the flow rate value exceeds the alarm upper limit or falls below the alarm lower limit, and the duration
time is longer than the user programmed detection time, the main screen and LED indicator will display a red
alarm status as shown in Figure 8.
Figure 8.

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6.5 Set the Operating Mode for the FS-100
Press or in the setting menu and select [Pattern]. The following operating modes are available:
⚫Flow Rate = Display the average flow rate.
⚫Flow Meter = Display the instantaneous flow rate.
⚫Flow Control* = Set a desired constant flow rate.
*NOTE* The Flow Control mode should be used with a regulating valve. Pyxis offers a “Turn-Key” flow control
solution called Nano-FlowTM, please refer to Section 4.4 for more details.
Figure 9.
If the user selects Flow Control mode, a preset flow rate must be entered (Figure 10). The FS-100 will control
the regulating valve according to the preset flow rate.
Figure 10.
*NOTE* If the actual flow rate does not reach the preset flow rate,
and duration time is longer than two minutes,
the main screen and LED indicator will display red alarm status . .
Figure 11.

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6.6 Flow Regulating Valve Output - 4-20 mA Span
The FS-100 series flow meter controls the valve position of the regulating ball valve by outputting the 4-20 mA
signal. After the user assigns a desired flow set point in Flow Control (C) mode, the FS-100 series will
automatically calculate the error between the actual flow rate and the setpoint flow rate and adjust the
appropriate 4-20mA output value through the preprogrammed PID algorithm to regulate the valve. This
advanced feature provides turn-key and real-time application use resulting in the sample flow rate infinitely
close to the user programmed setpoint value. See process diagram below.
Figure 12.
6.7 Flow Measurement Output - 4-20 mA Span
Press or in the setting menu and select [4-20mA Out] to change the 4-20mA output corresponding to the
flow rate. See Figure 13 for details. *NOTE* The default 4–20mA output of the FS-100 flowmeter is scaled as:
4mA = 0 mL/min
, 20 mA = 3000 mL/min.
Figure 13.

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6.8 Modbus Communication Settings
Press or in the setting menu and select [Com] to modify communication parameters (Figure 14).
The following communication settings are available:
⚫Modbus Address (Range: 1~247)
⚫Baud Rate (Options: 9600 / 38400 / 57600 / 115200)
⚫Parity (Options: None / Odd / Even)
Figure 14.
6.9 Calibration
During flow meter ZERO & SLOPE calibration, the FS-100 must be set to instantaneous flow mode. *NOTE*
Please refer to Section 6.5 to set the operating mode for FS-100).
6.9.1 Two-Point Calibration
Zero Calibration: This function is used to correct the instantaneous flow rate to “ZERO”. *NOTE* To perform
zero calibration the pipe must be filled with fluid and the fluid should not be moving.
Figure 15.

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Slope Calibration: This function is used to calibrate the accumulated flow value. Determine the accumulated
flow value of the sample water over a period of time by using the electronic balance. The user can customize
the sampling time to their preference.
1. Turn off the water valve and place the water outlet line in a beaker.
2. From the main screen, reset the Accumulated Flow Value (Q) to 0.00mL by pressing and holding the
key for about two seconds.
3. Quick Press the key to restart the calculation of the accumulated flow value. Turn on the water valve
and fill the beaker with water.
4. Navigate to Slope Calibration screen and enter the measured value of the shot amount as noted by the
electronic balance (as grams). *NOTE* 1-mL of water weighs 1-gram.
Figure 16.
5. If the calibration was successful, the interface will return a message “calibration succeed”.
6.9 Display Screen Orientation Settings
Press or in the setting menu and select [Screen] to select the display orientation of the screen.
Figure 17.

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6.10 Device Information
Press or in the setting menu and select [Info]. This screen contains the device name, serial number,
software version, and hardware version (Figure 18)
Figure 18. Figure 19. Figure 20.
Press or to turn the page. This screen information has no use for normal operation, but instead is used
for device troubleshooting. Provide an image of both the DEVICE INFORMATION screen and the DIAGNOSIS
screen when you contact Pyxis ([e-mail]) for troubleshooting your device or call +1 (866)
203-8397 ext. 2.
7. Communication Using Modbus RTU
The FS-100 series ultrasonic flowmeter is configured as a Modbus slave device. In addition to flow rate
mL/min and temperature ℃values, many operational parameters, including warning and error messages,
are available via Modbus RTU connection. Contact Pyxis Lab Customer Service ([email protected]) for
more information.
8.Contact Us
Pyxis Lab, Inc
21242 Spell Circle
Tomball, TX. 77375 USA
www.pyxis-lab.com
Phone: [phone]
Email: [e-mail]