Pyxis LT-63 Series User manual

LT-63X Series
Submersible Self-Cleaning
Turbidity Sensor
Operation Manual
August 24, 2023
Rev. 1.03
Pyxis Lab, Inc.
1729 Majestic Dr. Suite 5
Lafayette, CO 80026 USA
www.pyxis-lab.com
© 2020 Pyxis Lab, Inc.
Pyxis Lab Proprietary and Confidential

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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 original shipment date.
Warranty Service
Damaged or dysfunctional instruments may be returned to Pyxis for repair or replacement. In some in-
stances, 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
designate. 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 Authorization (RA) 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 https://www.pyxis-lab.com/request-return-or-repair/
Pyxis Technical Support
Contact Pyxis Technical Support at [phone] or [e-mail]

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Table of Contents
1 Introduction....................................................................................................................................4
1.1 Features ............................................................................................................................................ 4
1.2 Specifications .................................................................................................................................... 5
1.3 Unpacking the Pyxis LT-63X Series Sensor........................................................................................ 5
1.4 Standard Accessories ........................................................................................................................ 6
1.5 Optional Accessories......................................................................................................................... 6
2Quick 4-20mA Start ........................................................................................................................7
3Installation.....................................................................................................................................8
4Calibration and Diagnosis .............................................................................................................10
4.1 Calibration and Diagnosis by uPyxis Mobile APP ............................................................................ 10
4.1.1 Calibration................................................................................................................................... 11
4.1.1.1 Deionized Water Calibration......................................................................................................12
4.1.1.2 Mid-Range Calibration ............................................................................................................... 12
4.1.1.3 High-Range Calibration ..............................................................................................................13
4.1.2 Restore to Factory Calibration Settings ......................................................................................14
4.1.3 Diagnosis ..................................................................................................................................... 15
4.1.4 Cleaning Period Adjustment .......................................................................................................16
4.2 Calibration and Diagnosis by uPyxis Desktop APP .......................................................................... 17
4.2.1 Calibration................................................................................................................................... 20
4.2.1.1 Deionized Water Calibration......................................................................................................21
4.2.1.2 Mid-Range Calibration ............................................................................................................... 21
4.2.1.3 High-Range Calibration ..............................................................................................................22
4.2.2 Restore to Factory....................................................................................................................... 23
4.2.3 Diagnosis ..................................................................................................................................... 24
4.2.4 Cleaning Period Adjustment .......................................................................................................24
5Modbus RTU ................................................................................................................................25
6Sensor Cleaning and Maintenance ................................................................................................25
7Sensor Wiper Replacement Instructions........................................................................................26
8Contact Us ...................................................................................................................................27

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1 Introduction
The LT-63X series sensor platform (including the LT-631, LT-632 and LT-633) are submersible, waterproof,
self-cleaning sensors utilize dual wavelength detection technology to measure turbidity in the ranges of 0
to 4000 NTU. The sensor automatically compensates for disturbances caused by flow fluctuations, climate
change, color change or changes in turbidity. The instrument design is virtually maintenance-free, and the
self-cleaning capability of the sensor prevents deviations caused by air bubbles and suspended solids
particulate. It is powered by a 24 VDC/6W power supply and offers fully integrated 4-20 mA and RS-485
Modbus output signals for connection to any controller, PLC or DCS network. When clean, the unique
Pyxis sensor design offers a stability of <0.1 NTU for up to 1-year without calibration. Additionally, this
sensor platform can be accessed via the MA-CR Bluetooth/USB adapter for local display, diagnostics, auto-
wiper programming, sensor cleaning and calibration when using the uPyxis APP for mobile or desktop
devices. The LT-63X series sensor is ideal for use in raw water, surface water, storm water, process water
and discharged water applications.
1.1 Features
The LT-63X Series sensor includes the following features:
•Resolution as low as 0.1 NTU
•Built-in transmitter, without preamplifier or meter head
•Combination 4-20mA isolated signal and RS-485 Modbus (RTU) output
•Simple / Wireless calibration using uPyxis Mobile or Desktop APPs and MA-CR Bluetooth Adapter
•Supports self-cleaning of sensor lens for dirty water applications
•Optional calibration with Pyxis Formazin calibration standards or field water samples
•¾-inch MNPT Threaded For Fixed Submersion
Figure 1 LT-63X Series Dimensions (mm)

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1.2 Specifications
Item
LT-631
LT-632
LT-633
P/N
53249
53250
10002
Parameter
Turbidity
Measurement Range
(4-20mA Output Scale)
0.00 –500.00
0.00 –1000.00
0.00 –4000.00
Unit of Measure
NTU
Nephelometric Turbidity Unit
Lower Detection Limit
0.5NTU
Precision
(Tested in Formazin standard solution (25°C) )
<100 NTU: ±3%of reading or 2 NTU
>100 NTU: ±10% of reading
Resolution
0.1NTU
Response Time
T95<12 Seconds
Calibration Method
Field Tested Process Sample or Formazin Calibration Standard
Dual Wavelength
Warm White Light <100NTU / Infrared Light >100NTU
Method
Scattering
Power Supply
22 –26VDC 6W
Operating Temperature
32 –122 °F (0-50 °C)
Storage Temperature
-7 °C –60 °C (20 –140 °F)
Outputs
Isolated 4 –20 mA Analog Output & Isolated RS-485 Digital Output
Installation
Submersed –Fixed Conduit ¾-inch MPNT Threaded Cable Fitting
Submersed –Hoisting Chain or Cable
Sensor Distance from Bottom of Vessel (>15cm)
Sensor Distance from Sides of Vessel (>10cm)
Material
316 Stainless Steel –Body & Wiper Arm
PTFE –Wiper Blade
Weight
1,530 g (3.3 lbs)
Operational Pressure
45 psi (3.1 Bar)
Rating
IP-68, Fully Dustproof & Waterproof
Regulation
CE / RoHS
Dimension (L x W x H)
(254mm x 57mm x 57mm)
Cable Length
33 feet (10m) w/IP-67 8-Pin adapter
4.9 feet (1.5m) flying lead w/IP-67 8-Pin adapter
(Extension Cables Also Available)
*Note*: Pyxis Lab specifications are subject to change without notice
1.3 Unpacking the Pyxis LT-63X Series Sensor
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 service@pyxis-
lab.com

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1.4 Standard Accessories
The following accessories are included in the LT-63x sensor package.
LT-631 (P/N 53249) or LT-632 (P/N 53250) or LT-633 (P/N 10002) sensor will include the following:
•One bulkhead terminated cable w/8-Pin Female Adapter (33 feet / 10m)
•One MA-1.5CR Flying Lead Cable w/8-Pin Male Adapter/Flying Lead (4.9 feet / 1.5m)
•One MA-CR Bluetooth / USB Adapter
•The full instrument manual is available for download at www.pyxis-lab.com/shop/
Figure 2 - LT-63X Series Sensor with 10m Terminated Cable + 1.5m Flying Lead Cable (MA-1.5CR) + MA-CR Bluetooth/USB Adapter
1.5 Optional Accessories
The following optional accessories can be purchased [email protected] or www.pyxis-lab.com/shop/
Accessory Name
Item Number
LT-63x Replacement Wiper Blade/Arm Assembly Kit
(Includes 5 sets of Wiper Blade with Arm)
50700-A50
MA-CR
(Bluetooth Adapter/Display For use with Pyxis 8-Pin Sensors)
MA-CR
MA-120-B Fixed Submersion Adapter Bracket
(Submersed Fixed Installation Mounting Bracket)
50783
MA-50CR
(50’ Extension Cable w/8Pin Adapters)
50743
MA-100CR
(100’ Extension Cable w/8Pin Adapters)
50744
Formazin Turbidity Calibration Standard –100 NTU
(4,000 mL)
57010-100L
Formazin Turbidity Calibration Standard –500 NTU
(4,000 mL)
57010-500L
Formazin Turbidity Calibration Standard –1,000 NTU
(4,000 mL)
57010-1000L

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2Quick 4-20mA Start
Follow the wiring table below to connect the LT-63x series sensor to a controller or PLC. *NOTE* All Pyxis
sensors provide a passive 4-20mA output signal, they are NOT LOOP POWERED. 24VDC+ power supply
and 4-20mA+ signal are independent of each other in all Pyxis Lab sensors.
Wire Color
Designation
Brown
Power GND
Green
RS-485 C
Yellow
RS-485 B
Gray*
4-20mA -
(Internally connected to power ground)
Pink
Not Used
Blue
RS-485 A
White
4-20mA + (Turbidity NTU)
Red
24V+
Silver
PE
*NOTE* The 24V- power ground (brown) and the 4-20 mA- (gray) return are internally connected. If the
24V- power ground and the 4-20 mA return in the controller are internally connected (non-isolated 4-20mA
input), it is unnecessary to connect the 4-20 mA- (gray wire) to the 4-20 mA negative terminal in the
controller. If a separate DC power supplier other than that from the controller is used, make sure that the
output from the power supply is rated for 22-26 VDC @ 250mA.
Please refer to the table below for proper LT-63X output 4-20mA scaling in your receiving display,
controller or PLC.
LT-63x Series Output Scaling (4-20mA)
mA
LT-631
LT-632
LT-633
4
0 NTU
0 NTU
0 NTU
20
500 NTU
1000 NTU
4000 NTU

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3Installation
Submersed Fixed Installation with MA-120-B: The LT-63X series sensor may be installed in a
submersed/fixed application using the MA-120-B Submersion Adapter Mounting Bracket (P/N: 50783).
The LT-63X series sensor should be installed as outlined in and 3A. For installation, the MA-120-B bracket
should permanently mounted in a fixed position for easy access to the LT-63X series sensor and piping.
For sensor replacement and maintenance, users only need to lift (vertically/upwards) the sliding block and
conduit with the mounted sensor from MA-120-B bracket. *NOTE* The LT-63X series sensor should be
installed with a minimum distance of >15cm from the bottom of water vessel to the lens of the sensor and
a minimum of >10cm from the vessel wall on all sides. Please note the LT-63X series outer diameter is ¾ -
inch NPT. A ¾ to 1-inch NPT bushing is required for installation.
Figure 3 –MA-120-B Submersion Adapter Mounting Bracket
Figure 3A - Installation Using MA-120-B Submersion Bracket with Piping
LT-63X series (¾-inch MNPT)
SS-304 Pipe (1-inch NPT)
Reducing Coupler (1-inch to ¾-inch FNPT)
MA-120-B

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Submersed Installation with Lifting Ring: The LT-63X series sensor comes equipped with a lifting ring which
allows the sensor to be lifted and lowered using a user provided chain or cable. For this method of
installation and use, please refer to
Figure . For sensor replacement and maintenance, users only need to lift the chain or cable and LT-63X
series sensor vertically (upwards).
Figure 4 - Submersed Installation Using the Lifting Ring
*NOTE* The LT-63X series sensor should be installed with a minimum distance of >15cm from the bottom
of water vessel to the lens of the sensor and a minimum of >10cm from the vessel wall on all sides.
Reference ID
Name
1
Retention Chain / Cable
2
Sensor Output Cable
3
LT-63X Series Turbidity Sensor
3
1
2
Lifting Ring
Vessel
Bottom

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4Calibration and Diagnosis
The LT-63X series sensor is rigorously calibrated before leaving the factory. As
such, users do not need to calibrate the sensor for a period of one year if the
sensor is maintained clean. Users can however calibrate the sensor according
to their needs and as desired using the MA-CR Bluetooth adapter and uPyxis
APP for mobile or desktop devices. Likewise, the LT-63X series may also be
calibrated after cleaning via PLC or controller through 4-20mA communication.
4.1 Calibration and Diagnosis by uPyxis Mobile APP
Connect and power the LT-63X series sensor to a display, controller or PLC. Insert the Pyxis MA-CR
Bluetooth adapter (P/N: MA-CR) as shown in the following connection diagram, using the 8-pin adapters
on the provided sensor cables. (Figure ). The power should be sourced from a 24 VDC power terminal of
the connected display, controller or PLC. If a controller is not available, the LT-63X may also be powered
via any 22-26 VDC power supply capable of 6W, that can directly connect to the LT-63X series sensor with
provided connection cables from Pyxis. *NOTE* The MA-CR provides a micro-display for local visibility of
the sensor reading and mA value output.
Figure 5 - LT-63X Series Sensor and MA-CR Bluetooth Adapter Powered By Connected Display, Controller or PLC
Download and install the uPyxis APP from Apple Store or Google Play per the QR codes provided in the
image above. Be sure to turn on Bluetooth in the mobile device (please do not pair the device Bluetooth
to any Pyxis device, the uPyxis APP will do the pairing). Open the uPyxis APP in the mobile device. Finger
swipe the screen downward to refresh the screen and scan for the available Pyxis Bluetooth devices. The
discovered devices will be listed (see Figure 6).