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Emerson FB1100 Field Replacement Manual

Flow computer sensor assembly
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FB1100/FB1200 Flow Computer
Sensor Assembly
Field Replacement Guide
For Part Numbers (Kits):
See tables on pages iii through v for part/kit numbers
Remote Automation Solutions
FB1100/FB1200 Flow Computer Sensor Assembly Field Replacement Guide
D301842X012
November 2020

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  Summary of Contents for Emerson FB1100

  • Page 1 FB1100/FB1200 Flow Computer Sensor Assembly Field Replacement Guide D301842X012 November 2020 FB1100/FB1200 Flow Computer Sensor Assembly Field Replacement Guide For Part Numbers (Kits): See tables on pages iii through v for part/kit numbers Remote Automation Solutions...
  • Page 2: System Training

    Our full-time professional instructors can conduct classroom training at several of our corporate offices, at your site, or even at your regional Emerson office. You can also receive the same quality training via our live, interactive Emerson Virtual Classroom and save on travel costs. For our complete schedule and further information, contact the Remote Automation Solutions Training Department at 800-338-8158 or email us at education@emerson.com.
  • Page 3 FB1100/FB1200 Flow Computer Sensor Assembly Field Replacement Guide D301842X012 November 2020 Table 1. FB1100 Sensor Assembly Part Numbers (Use Selection Column to Generate UL-listed Kit Number) Integral Sensor Selection Differential Pressure Range & Accuracy Approvals 25 Inches H2O (62.3 mbar) DP, 0.1% Accuracy...
  • Page 4: Calibration Certificate

    FB1100/FB1200 Flow Computer Sensor Assembly Field Replacement Guide D301842X012 November 2020 Integral Sensor Selection Calibration Certificate Class 1 Div 2 UL, IEC Ex N, ATEX Ex N Not Required Class 1 Div 1 UL, IEC Ex d, ATEX Ex d...
  • Page 5 FB1100/FB1200 Flow Computer Sensor Assembly Field Replacement Guide D301842X012 November 2020 Integral Sensor Selection Class 1 Div 2 UL, IEC Ex N, ATEX Ex N MV 1500 psi absolute (103.4 bara) Class 1 Div 1 UL, IEC Ex d, ATEX Ex d...
  • Page 6 FB1100/FB1200 Flow Computer Sensor Assembly Field Replacement Guide D301842X012 November 2020...
  • Page 7 FB1100/FB1200 Flow Computer Sensor Assembly Field Replacement Guide D301842X012 November 2020 Removing/Replacing Sensor Assemblies DANGER EXPLOSION HAZARD: To replace the sensor you must completely remove the flow computer from its installation location and move it to a non-hazardous area. Ensure the area is non- hazardous before disconnecting the flow computer.
  • Page 8 November 2020 Important Only use accessories supplied with the flow computer or sold by Emerson as spare parts for this flow computer. If you substitute a part you obtain elsewhere you will void your certification unless it is the identical part from the same manufacturer as that supplied with the flow computer from Emerson.
  • Page 9 UL Listed Sensory Assembly Field Installed Accessory Kits for Use in Class I, Division 1, Groups C and D, Class I, Division 2, Groups A, B, C, D. See Table 1 (for FB1100) or Table 2 (for FB1200) to determine correct UL Listed kit numbers.
  • Page 10 FB1100/FB1200 Flow Computer Sensor Assembly Field Replacement Guide D301842X012 November 2020 Unscrew the end cap turning it counter-clockwise until the cover comes off. Set it aside in a safe location. Note If you need more leverage, place a long screwdriver or other appropriate tool across the two notches in the end cap to act as a pry bar.
  • Page 11 FB1100/FB1200 Flow Computer Sensor Assembly Field Replacement Guide D301842X012 November 2020 With a #1 Phillips-head screwdriver, loosen the two bottom captive fastening screws on the HMI module. Leave the two top screws on the HMI module connected to the battery pack enclosure.
  • Page 12 FB1100/FB1200 Flow Computer Sensor Assembly Field Replacement Guide D301842X012 November 2020 Set the battery pack enclosure/HMI module assembly aside. You will need it later. Look into the housing from the front. Two captive fastening screws on the inside of the housing hold the termination board in place.
  • Page 13 FB1100/FB1200 Flow Computer Sensor Assembly Field Replacement Guide D301842X012 November 2020 Now grasp the termination board bezel from the back of the unit and pull out the termination board assembly. With a #2 Phillips-head screwdriver, loosen the two captive fastening screws in the plastic bezel that hold the CPU module in place.
  • Page 14 FB1100/FB1200 Flow Computer Sensor Assembly Field Replacement Guide D301842X012 November 2020 Grasp the plastic bezel and gently pull the CPU module out of the housing. 16. Use a 3/32-inch flathead screwdriver to separate the internal wire connector plug from the plug on the bottom of the CPU module.
  • Page 15 FB1100/FB1200 Flow Computer Sensor Assembly Field Replacement Guide D301842X012 November 2020 Looking into the front end of the enclosure, pull the card cage out of the enclosure, then disconnect the upper part of the sensor cable and push the lower part through the grommet so you can completely remove the card cage.
  • Page 16 FB1100/FB1200 Flow Computer Sensor Assembly Field Replacement Guide D301842X012 November 2020 Grasp the sensor with one hand and unscrew the flow computer housing with your other hand until you can lift it off. Then set the enclosure aside. Grasp the sensor cable in detach it from the old sensor assembly.
  • Page 17 FB1100/FB1200 Flow Computer Sensor Assembly Field Replacement Guide D301842X012 November 2020 Lower the flow computer housing down onto the new sensor assembly making sure the sensor cable fits through the hole in the bottom of the housing. Now rotate the housing onto the sensor assembly until it is tight and positioned correctly for its installation site.
  • Page 18 FB1100/FB1200 Flow Computer Sensor Assembly Field Replacement Guide D301842X012 November 2020 Tighten the screws that you loosened in step12. Torque screws to 4 to 6 in-lbs (0.5 to 0.7 N m). Take the battery pack enclosure/HMI module assembly you removed in step 8. Being...
  • Page 19 FB1100/FB1200 Flow Computer Sensor Assembly Field Replacement Guide D301842X012 November 2020...
  • Page 20 Emerson Automation Solutions Remote Automation Solutions Emerson FZE P.O. Box 17033 © 2018-2020 Remote Automation Solutions, a business unit of Emerson Automation Jebel Ali Free Zone – South 2 Solutions. All rights reserved. Dubai U.A.E. This publication is for informational purposes only. While every effort has been made to ensure...

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Fb1200