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Emerson Rosemount OCX8800 Quick Start Manual
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Emerson Rosemount OCX8800 Quick Start Manual

Oxygen and combustibles transmitter with 4–20 ma hart protocol
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Quick Start Guide
00825-0100-4880, Rev AE
July 2023
Rosemount
OCX8800 Oxygen and
™
Combustibles Transmitter
®
with 4–20 mA HART
Protocol

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Summary of Contents for Emerson Rosemount OCX8800

  • Page 1 Quick Start Guide 00825-0100-4880, Rev AE July 2023 Rosemount OCX8800 Oxygen and ™ Combustibles Transmitter ® with 4–20 mA HART Protocol...
  • Page 2 Quick Start Guide July 2023 Safety information Emerson designs, manufactures, and tests its products to meet many national and international standards. Because these instruments are sophisticated technical products, you must properly install, use, and maintain them to ensure they continue to operate within their normal specifications.

  • Page 3: Table Of Contents

    July 2023 Quick Start Guide Installation............................ 6 Configuration and startup......................30 Using the local operator interface (LOI)..................38 Calibration...........................41 Product certifications........................ 49 Declaration of Conformity......................53 China RoHS table........................55 Quick Start Guide...
  • Page 4 Quick Start Guide July 2023 Emerson.com/Rosemount...
  • Page 5 Description and specifications 1.1  Component checklist Check the model number of your Rosemount OCX8800 against the transmitter features and options, making sure options specified by this number are on or included with the unit. Use this complete model number for any correspondence with Emerson.

  • Page 6: Installation

    The sensor housing must not be mounted to any surface or flange that exceeds 383 °F (195 °C). The sample entering the sensor housing must not exceed 383 °F (195 °C). Emerson.com/Rosemount...
  • Page 7 July 2023 Quick Start Guide  WARNING Electrical shock Failure to install covers and ground leads could result in serious injury or death. Install all protective equipment covers and ground leads after installation. If external loop power is used, the power supply must be a safety extra low voltage (SELV) type.
  • Page 8 You can install the transmitter intact as it is received. 2. Weld or bolt adapter plate onto the duct. 3. Use the pipe or wall mounting hardware to mount a remote electronics housing. Choose a location that does not exceed the length of the electronics cable ordered. Emerson.com/Rosemount...
  • Page 9 July 2023 Quick Start Guide 4. Ensure the conduits drop vertically from the transmitter and the conduit is routed below the level of the conduit ports on the housing to form a drip loop. Drip loops minimize the possibility that moisture will damage the electronics.
  • Page 10 All wiring must conform to local and national codes. Figure 2-2 shows factory wired solenoid power connections.  WARNING Failure to install covers and ground leads could result in serious injury or death. Install all protective equipment covers and safety ground leads after installation. Emerson.com/Rosemount...
  • Page 11 July 2023 Quick Start Guide  WARNING To meet the Safety Requirements of IEC 61010 (EC requirement), and ensure safe operation of this equipment, connection to the main electrical power supply must be made through a circuit breaker (minimum 10 A) in close proximity and marked for this equipment which will disconnect all current-carrying conductors during a fault situation.
  • Page 12 Braided cable is available in lengths up to 150 ft (46 m). Note Interconnect wiring shown is for Emerson-supplied cables. 2.3.8  Signal connections Connect the electronics housing terminals to the corresponding terminals in the sensor housing.
  • Page 13 July 2023 Quick Start Guide Figure 2-2: Line voltage, earth, and 4-20 mA connections A. Alarm output relay terminal block B. F Fieldbus ™ OUNDATION C. HART ® D. Signal output terminal block E. Ground stud F. Earth ground typical for electronics and sensor housing G.
  • Page 14 Failure to use proper gases will result in erroneous readings. Do not use 100 percent nitrogen as an O low gas. Emerson recommends using O low gas between 0.4 percent and 2.0 percent O Do not use gases with hydrocarbon concentrations of more than 40 parts per million.
  • Page 15 July 2023 Quick Start Guide Figure 2-3: Pneumatic installation, Rosemount OCX8800 with reference air set without autocalibration A. Sensor housing B. Eductor air in C. Electronics housing D. Calibration gas in E. Reference air in F. Dilution air in G. Dilution air flow meter 0.1 scfh H.
  • Page 16 5. Connect the CAL GAS outlet fitting of the electronics housing to the inlet port of the CAL GAS flow meter. Install an air line between the flow meter outlet port and the CAL GAS inlet fitting on the sensor housing. Emerson.com/Rosemount...
  • Page 17 July 2023 Quick Start Guide Figure 2-4: Pneumatic installation, Rosemount OCX8800 with reference air set, solenoids, and autocalibration, without COe zero function A. Sensor housing B. Eductor air in C. Electronics housing D. Calibration gas in E. Reference air in F. Dilution air in G.
  • Page 18 2.4.3  Reference air set and solenoids option with COe zero function Figure 2-5 shows the piping arrangement for the transmitter with autocalibration when the COe zero function is used. The arrangement is similar to Figure 2-4, except instrument air is used as the high O test gas. Emerson.com/Rosemount...
  • Page 19 July 2023 Quick Start Guide Figure 2-5: Pneumatic installation, Rosemount OCX8800 with reference air set, solenoids, and autocalibration, with COe zero function A. Sensor housing B. Eductor air in C. Electronics housing D. Calibration gas in E. Reference air in F. Dilution air in G.
  • Page 20 Figure 2-6 shows the piping arrangement for the transmitter with the blowback and autocalibration options when COe zero function is used. The arrangement is similar to Figure 2-4 except instrument air is used as the high O test gas. Emerson.com/Rosemount...
  • Page 21 July 2023 Quick Start Guide Figure 2-6: Pneumatic installation, Rosemount OCX8800 with reference air set, solenoids, and autocalibration, with COe zero function A. Sensor housing B. Eductor air in C. Electronics housing D. Reference air in E. Dilution air in F. Dilution air flow meter, 0.1 scfh G.
  • Page 22 COe zero function, Step 2 through Step 5. 2. Connect a clean, dry, instrument-quality supply of air (20.95 percent O ) to the 45 psig and 55 psig pressure regulators. During blowback operation, states of both solenoid valves change. Emerson.com/Rosemount...
  • Page 23 July 2023 Quick Start Guide The inlet to the 45 psig regulator accepts a ⅛-in. NPT fitting. The inlet to the 55 psig regulator accepts a ¼-in. NPT fitting. 3. See the upper leg of the instrument air supply. Connect the output of the 35 psi regulator/filter to one port of the normally closed air-operated solenoid valve, and to the inlet side of the dilution air flow meter.
  • Page 24 Quick Start Guide July 2023 Figure 2-7: Pneumatic installation, Rosemount OCX8800 with reference air set, solenoids, blowback, and autocalibration without COe zero function A. Sensor housing B. Eductor air in C. Electronics housing D. Reference air in E. Dilution air in F.
  • Page 25 July 2023 Quick Start Guide Q. Blowback valve, air operated R. Two-in. pressure gauge 0-60 psig S. Combination filter-reg. 0-60 psig T. Flow meter 1-10 scfh U. Flow meter 0.05-0.5 scfh V. Pneumatic actuator W. Combination filter/reg. 0.60 psig X. Check valve 5 psig Note Wall mount the air-operated blowback valve on a suitable mounting plate.
  • Page 26 G. Instrument air H. Instrument air out I. Calibration gas out J. Dilution air out K. Blowback air out L. Blowback control air M. Instrument air supply N. Instrument air to electronics O. Two-stage regulators P. Actuating air Q. Check valve Emerson.com/Rosemount...
  • Page 27 July 2023 Quick Start Guide Figure 2-9: Pneumatic Installation, Blowback Panel with Autocalibration without COe Zero Function A. Sensor housing B. Eductor air in C. Electronics housing D. Calibration gas in E. Reference air in F. Dilution air in G. Instrument air H.
  • Page 28 G. Instrument air H. Instrument air out I. Calibration gas out J. Dilution air out K. Blowback air out L. Blowback control air M. Instrument air supply N. Instrument air to electronics O. Two-stage regulators P. Actuating air Q. Check valve Emerson.com/Rosemount...
  • Page 29 July 2023 Quick Start Guide 2.5  Initial start-up Observe the following Caution. Refer to Configuration and startup for start-up information.  CAUTION Damage can result from having a cold transmitter exposed to the process gases. If ducts will be washed down during outages, make sure to power down the transmitter and remove it from the wash area.

  • Page 30: Configuration And Startup

    3.1.1  Verify configuration - HART electronics ® There are three switches on the microprocessor board which are user configurable for the Rosemount OCX8800 with HART electronics (Figure 3-1). SW1 determines if the O 4-20 mA signal is internally or externally powered.
  • Page 31 July 2023 Quick Start Guide Figure 3-1: Rosemount OCX8800 Defaults - HART Electronics A. Switch default positions shown B. O 21.1 mA / 3.5 mA: O 4-20 mA signal Rail limits: Open High: 21.1 mA Closed Low: 3.5 mA COe 21.1 mA/3.5 mA: COe 4-20 mA signal Rail limits: Open High: 21.1 mA...
  • Page 32 LOW GAS. Enter the percent used for the low O test gas. 5. From the DETAILED SETUP menu, select COe CALIB PARAMS. 6. From COe CAL PARAMS, select COe Test Gas. Enter the CO concentration (ppm) used for COe test gas. Emerson.com/Rosemount...
  • Page 33 CO concentration (ppm) used for COe test gas. 3.4  Calibration solenoids Emerson can provide the transmitter with optional calibration solenoids for autocalibration. The transmitter's software controls the solenoids, which automatically switch in the proper calibration gas during the calibration cycle.
  • Page 34 The blowback feature requires the optional blowback hardware to be properly installed external to the transmitter. A Rosemount OCX8800 shipped from the factory must be configured before blowback can be implemented. This same process must be performed any time a replacement card stack is installed.
  • Page 35 The COe zero feature is only valid if the transmitter is supplied with calibration solenoids and the solenoids have been activated. A Rosemount OCX8800 shipped from the factory must be configured before the COe zero feature can be implemented. This same process must be performed any time a replacement card stack is installed.
  • Page 36 Valid choices are None, Both, COe, and O • Zero Update: Determines if the COe calibration constant is updated at the end of the function. Valid choices are Yes and No. A Yes choice will cause the COe calibration constant to update. Emerson.com/Rosemount...
  • Page 37 July 2023 Quick Start Guide Note At the completion of the COe Zero Function, the COe analog output signal will change if the Zero Update parameter is set to Yes. 3.6.2  Configure COe zero with the LOI Procedure 1. Use the Z pattern to enter the LOI menu tree. 2.

  • Page 38: Using The Local Operator Interface (Loi)

    Enter key, used after the digits of a parameter value are entered and the cursor is moved to its left-most position. When you touch the Enter key, the new parameter value, if accepted, will appear in the top line of the display. Emerson.com/Rosemount...
  • Page 39 July 2023 Quick Start Guide Use the blue (bottom left) key as a selector when choosing from among several menu items. This right-pointing key also will move the cursor to the right when entering the digits of a new parameter value. Use the up and down pointing keys to increment up and down when selecting from a vertical list of menu items.
  • Page 40 Quick Start Guide July 2023 Figure 4-2: Z Pattern Entry Emerson.com/Rosemount...

  • Page 41: Calibration

    July 2023 Quick Start Guide 5  Calibration 5.1  Fully automatic calibration If the transmitter is equipped with calibration solenoids, you can program it to automatically calibrate without any operator action. Refer to Set up autocalibration using the local operator interface (LOI) Set up autocalibration using HART to set up the transmitter ®...
  • Page 42 1. Press Right to select the CALIBRATION first column submenu. 2. From the CALIBRATION submenu, press Right to select the Cal Control second column submenu. 3. From the Cal Control submenu, press Right to select the third column Start Cal O option. Emerson.com/Rosemount...
  • Page 43 July 2023 Quick Start Guide 4. Remain at Start Cal O or press Down to select Start Cal COe or Start Cal Both. The following sequence applies when you select Start Cal Both. 5. Press Right to start the calibration. Turn on the low O test gas, when prompted by the Flow Low Gas message.
  • Page 44 Low for a period of time. During this period, if you try to go to the next calibration step by pressing OK and selecting Start/Next Cal Step, you will be prompted with Operator step command is not accepted at this Emerson.com/Rosemount...
  • Page 45 July 2023 Quick Start Guide time. The Next Cal Step command is not accepted at this time. When ready, Calibration Status will stop at the AppO 11. Switch off the O Low Gas and switch on the O High Gas. Verify the O concentration measured matches the O HIGH GAS parameter in the Setup.
  • Page 46 6. Remove the transmitter from any automatic control loops to avoid a potentially dangerous operating condition and press 7. Set the main Calibration screen to the following values. Press OK to continue. • OCX: TAG NAME Emerson.com/Rosemount...
  • Page 47 July 2023 Quick Start Guide • STATUS: Idle • TIME REMAIN: 0s • O2: 0.4%, 85.95 mV • COe: 0.20 ppm • OK/NEXT to Select • ABORT/CANCEL to Exit 8. From the SELECT ACTION screen, select START CAL/STEP CAL to continue calibration, select ABORT CAL to abort calibration, or select EXIT CAL to exit calibration method.
  • Page 48 When ready, Calibration Status will stop at STOP GAS. 16. Switch off the COe gas. Press OK when ready. Select START CAL/STEP CAL to start purging gas. The time to apply the test gas is specified by the Purge Time. Emerson.com/Rosemount...

  • Page 49: Product Certifications

    Zone marked equipment in Divisions. The markings must be suitable for the area classification, gas, and temperature class. This information is clearly defined in the respective codes. 6.4  Rosemount OCX8800 Oxygen/Combustibles Transmitter (OCX88A) for general purpose locations 6.4.1  USA/Canada 1602514 Certificate: C22.2 No.
  • Page 50 Quick Start Guide July 2023 6.5  Rosemount OCX8800 Oxygen/Combustibles Transmitter (OCX88C) for Hazardous Locations and Sensor Models 00088-0100-0001 and 00088-0100-0002 6.5.1  USA/Canada 1602514 Certificate: C22.2 No. 0-10, C22.2 No 94.2:20 (Third Edition) Standards: C22.2 No. 61010-1-12, CAN/CSA-C22.2 No. 60079-0:15 CAN/CSA-C22.2 No. 60079-1:16, ANSI/ISA-60079-0 (12.00.01)-2013...
  • Page 51 July 2023 Quick Start Guide 6.5.2  Europe ATEX/UKCA KEMA 04ATEX2308 X ATEX Certificate: DEKRA 21UKEX0287 X UKCA Certificate: EN IEC 60079-0:2018 Standards: EN 60079-1: 2014 Markings: II 2G Ex db IIB + H T3 Gb* *Temperature Classification and Ambient temperature range: T6 (split architecture –...
  • Page 52 2. The pressure within the enclosure and gas lines shall not be higher than 1.1 times atmospheric pressure during normal operation. 3. Flameproof joints are not intended to be repaired. Emerson.com/Rosemount...

  • Page 53: Declaration Of Conformity

    July 2023 Quick Start Guide 7  Declaration of Conformity Quick Start Guide...
  • Page 54 Quick Start Guide July 2023 Emerson.com/Rosemount...

  • Page 55: China Rohs Table

    July 2023 Quick Start Guide 8  China RoHS table Quick Start Guide...
  • Page 56 2023 Emerson. All rights reserved. Emerson Terms and Conditions of Sale are available upon request. The Emerson logo is a trademark and service mark of Emerson Electric Co. Rosemount is a mark of one of the Emerson family of companies. All other marks are the property of their respective owners.