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5

Instrument Overview

5.1

Test Metal Electrodes

Pyxis provides 5-cm

2

(0.736 square inch) metal electrodes, commonly used in the LPR corrosion measure-

ment applications. The common names, UNS codes, and alloy factors are listed the table below.

Figure 10.

Test Metal Electrode Dimensions, Inch [mm]

CR-301 User Manual

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Summary of Contents for 51021

Page 1: ......

Page 2: ...R 301 Corrosion Rate Sensor User Manual April 15 2021 Rev 1 01 Pyxis Lab Inc 1729 Majestic Dr Suite 5 Lafayette CO 80026 USA www pyxis lab com 2017 Pyxis Lab Inc Pyxis Lab Proprietary and Confidential...

Page 3: ...Y using the Calibration Check Caps 13 6 Setup and Calibration with uPyxis Mobile App 14 6 1 Download uPyxis Mobile App 14 6 2 Connecting to uPyxis Mobile App 15 6 3 Reading Screen 16 6 4 Setting Scree...

Page 4: ...elivery All service interventions are to be reviewed and authorized as correct and complete at the completion of the service by a customer representative or des ignate Pyxis warrants these services fo...

Page 5: ...e It can be adjusted by the user to account for variations in a real application environment To determine the corrosion situation of real process equipment is not a simple matter The corrosion rates f...

Page 6: ...asurement ranges and alloy factors will be applied to the CR 301 via the uPyxis APP when the user selects the metallurgy desired Custom alloy factors and ranges of measurement may be adjusted if desir...

Page 7: ...0 Minutes 3 Minutes Required for Localized Corrosion Data Alloy Factor Range 0 3 Adjustable Default Assigned via uPyxis on Metallurgy UNS Code Power Supply 24V DC 2W Output Output RS 485 and 4 20 mA D...

Page 8: ...ge P N 51021 The package should include one CR 301 sensor a 5 foot extension cable terminated with connectors a 2 foot flying lead cable with one end terminated with a connector One Bluetooth Adapter...

Page 9: ...ing the electrodes to avoid contamination with skin oils Figure 2 CR 301 Installation in the sample flow line The sensor probe shall be inserted into a pipe via a 3 4 inch threaded tee The corrosion r...

Page 10: ...vely Default alloy factors and corrosion rate scales in mils per year MPY are pre programmed for each metal lurgy in the uPyxis APP as outlined in the Test Metal Electrode Default Settings table When...

Page 11: ...trations of the CR 301 sensor to several common controllers Figure 4 Typical wiring for WalChem W600 Figure 5 Typical wiring for WalChem W900 4 wire loop configuration CR 301 User Manual service pyxis...

Page 12: ...r WalChem WebMaster One Figure 7 Typical wiring for Advantage Controls MegaTron SS NOTE To get a Pitting signal a jumper wire is needed from 4 20mA Input 2 to power 24V CR 301 User Manual service pyxi...

Page 13: ...App or a computer with the uPyxis Desktop App The power should be sourced from a 24 VDC power terminal of a controller If a controller is not available the user may also use Pyxis PowerPACK 1 or Powe...

Page 14: ...6 square inch metal electrodes commonly used in the LPR corrosion measure ment applications The common names UNS codes and alloy factors are listed the table below Figure 10 Test Metal Electrode Dimen...

Page 15: ...180 1 00 0 50 0 100 Mild Steel C1080 G10800 1 00 0 50 0 100 Stainless Steel 304 S30400 0 89 0 2 5 0 10 Stainless Steel 304L S30403 0 89 0 2 5 0 10 Stainless Steel 316 S31600 0 90 0 2 5 0 10 Stainless...

Page 16: ...or is configured with the uPyxis Default Settings assigned These corrosion verification caps will work regardless of which metallurgy is applied to the corrosion sensor and simply establish a known el...

Page 17: ...cal value of iron The sensor can be configured for other metals with appropriate alloy factors and the 4 20mA scale settings for general and localized corrosion rates using the uPyxis Mobile or Deskto...

Page 18: ...steps 1 Open uPyxis Mobile App 2 On uPyxis Mobile App pull down to refresh the list of available Pyxis devices 3 If the connection is successful the CR 301 and its Serial Number SN will be displayed F...

Page 19: ...App will default to the Reading screen From the Reading screen you can perform a calibration by pressing on Slope Calibration Follow the screen instructions for each calibration step Figure 14 CR 301...

Page 20: ...g Interval the Metal Selection the corrosion MPY value for 20 mA the pitting value for 20 mA two smoothing factors and a password for the device Be sure to press Apply Settings to save any changes Fig...

Page 21: ...Desktop App Download the latest version of uPyxis Desktop software package from https pyxis lab com upyxis this setup package will download and install the Microsoft Net Framework 4 5 if not previous...

Page 22: ...uPyxis Desktop App 3 On uPyxis Desktop App click Device Connect via USB Bluetooth Figure 17 4 If the connection is successful the CR 301 and its Serial Number SN will be displayed in the left pane of...

Page 23: ...esktop App will default to the Information screen On the Information screen you can set the Modbus Address then click Apply Settings to save Figure 18 7 4 Reading Screen From the Reading Screen you ca...

Page 24: ...as desired 8 2 Communication using Modbus RTU The CR 301 can be configured as a Modbus slave device In addition to the general corrosion rate and lo calized corrosion index many operational parameters...

Page 25: ...the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is con nected Consult the dealer or an experienced radio T...

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