Emerson Rosemount 975HR Series Reference Manual
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Emerson Rosemount 975HR Series Reference Manual

Emerson Rosemount 975HR Series Reference Manual

Multi-spectrum infrared hydrogen flame detector
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Reference Manual
00809-0100-4976, Rev DC
June 2021
™
Rosemount
975HR
Multi-Spectrum Infrared Hydrogen Flame Detector

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Summary of Contents for Emerson Rosemount 975HR Series

  • Page 1 Reference Manual 00809-0100-4976, Rev DC June 2021 ™ Rosemount 975HR Multi-Spectrum Infrared Hydrogen Flame Detector...
  • Page 2 Emerson does not assume any liability arising out of the application or any use of any product or circuit described herein;...
  • Page 3 Mark all packages with "Return for Repair" and include the RMA number. Pack items to protect them from damage and use anti-static bags or aluminum-backed cardboard as protection from electrostatic damage. Ship all equipment prepaid. Emerson will not accept collect shipments. Abbreviations and acronyms Abbreviation or acronym...
  • Page 4 Abbreviation or acronym Definition Infrared Type of jet fuel Latching Refers to relays remaining in the ON state even after the ON condition has been removed. Light emitting diode Liquified petroleum gas Milliamps (0.001 amps) ® Modbus Master-slave messaging structure N.C.

  • Page 5: Table Of Contents

    Reference Manual Contents 00809-0100-4976 June 2021 Contents Chapter 1 Introduction......................7 1.1 Overview............................. 7 1.2 Ordering information........................8 1.3 Features and benefits.........................11 1.4 Principles of operation....................... 11 1.5 Performance considerations...................... 15 1.6 Internal detector tests....................... 25 Chapter 2 Installing the detector....................29 2.1 General guidelines........................
  • Page 6 D.3 Duct mount..........................72 D.4 Weather cover: PN 00975-9000-0003..................73 D.5 Air shield: PN 00975-9000-0005....................74 Appendix E SIL-2 features......................75 E.1 Safety relevant parameters......................75 E.2 Guidelines for configuring, installing, operating, and service............. 75 Appendix F End of line resistor....................79 Emerson.com/Rosemount...

  • Page 7: Chapter 1 Introduction

    Reference Manual Introduction 00809-0100-4976 June 2021 Introduction Overview The Rosemount 975HR Multi-spectrum Infrared Hydrogen Flame Detector is specifically designed for the detection of hydrocarbon and hydrogen flames. It detects hydrocarbon- based fuel and gas fires at long distances with the highest immunity to false alarms. The detector can detect a gasoline pan fire at 215 ft.

  • Page 8: Ordering Information

    The non- starred offerings are subject to additional delivery lead time. 1.2.1 Product description Code Description ★ 975 flame detector 1.2.2 Technology Code Description ★ Multi-spectrum infrared ★ Multi-spectrum infrared hydrogen ★ Ultra fast ultraviolet infrared ★ Ultraviolet infrared Emerson.com/Rosemount...
  • Page 9 Reference Manual Introduction 00809-0100-4976 June 2021 1.2.3 Output configuration Code Outputs Fault relay Alarm relay Auxiliary relay Current type ★ ® Analog/HART Normally closed Normally open Sink RS-485/relays (fault, alarm) ★ Analog/HART/ Normally closed Normally open, Source RS-485/relays normally closed (fault, alarm) ★...
  • Page 10 1 and 8. You cannot change any other output configurations on site. For example, product number Rosemount 975HR3A8S2A1 has the following options: • Output configuration: 3A (analog/HART/RS-485/relays, fault N.O., alarm N.O./N.C., source) • Housing style: 8S (stainless steel - M25 conduit entry) Emerson.com/Rosemount...

  • Page 11: Features And Benefits

    Accessories are approved as part of ATEX and IECEx approval. Principles of operation 1.4.1 Fire detection principle Emerson designed this flame detector to detect hydrocarbon flames that produce CO their combusion process and non-hydrocarbon flames that produce mainly water vapor Rosemount 975HR...
  • Page 12 HART-enabled. HART is available in output configurations 1A, 2A, and 3A (see Output configuration). HART technology is easy to use and very reliable. Through the HART connection, you can do the following: • Detector setup • Detector troubleshooting • Detector health and status Emerson.com/Rosemount...
  • Page 13 Reference Manual Introduction 00809-0100-4976 June 2021 For more details, refer to Rosemount 975 HART Communication Manual (00809-0200-4975). ® 1.4.4 RS-485 Modbus For more advanced communications, the flame detector has an RS-485 Modbus- compatible output that provides data communication from a network (up to 247 detectors) to a host computer or universal controller for central monitoring.
  • Page 14 ABNT NBR IEC 60079-0 • ABNT NBRIEC 60079-1 • ABNT NBR IEC 60079-7 • ABNT NBR IEC 60079-18 • ABNT NBR IEC 60079-31 • INMETRO decree No. 179 For further details, see the Certificate of Compliance No. UL-BR 16.065XX. Emerson.com/Rosemount...

  • Page 15: Performance Considerations

    Reference Manual Introduction 00809-0100-4976 June 2021 TR CU/EAC The flame detector is in compliance with the standard TR CU 012/2011 per: 1Ex db eb op is IIC T4 Gb X Ex tb op is IIIC T96 °C Db X -55 °C ≤ Ta ≤ +75 °C 1Ex db eb op is IIC T4 Gb X Ex tb op is IIIC T106 °C Db X -55 °C ≤...
  • Page 16 Methane 150 / 45 150 / 45 Paper 82 / 25 Polypropylene 115 / 35 Hydrogen 125 / 38 Silane 7 / 2 Ammonia 60 / 18 30 in. (0.75 m) high, 10 in. (0.25 m) wide plume fire Emerson.com/Rosemount...
  • Page 17 Reference Manual Introduction 00809-0100-4976 June 2021 20 in. (0.5 m) high, 8 in. (0.2 m) wide plume fire Rosemount 975HR...
  • Page 18 Introduction Reference Manual June 2021 00809-0100-4976 1.5.2 Cone of vision Gasoline • Horizontal: 80 ° • Vertical: 80 ° Figure 1-1: Vertical and Horizontal Field of View for Gasoline Hydrogen • Horizontal : 70 ° • Vertical: 80 ° Emerson.com/Rosemount...
  • Page 19 Reference Manual Introduction 00809-0100-4976 June 2021 Figure 1-2: Horizontal Field of View for Hydrogen Rosemount 975HR...
  • Page 20 Vehicle headlights (low beam) conforming to MS53023-1 Incandescent frosted glass light, 300 W Fluorescent light with white enamel reflector, standard office or shop, 70 W (or two 35 W) Electric arc (15/32 in. [12 mm] gap at 4,000 Vac, 60 Hz) Emerson.com/Rosemount...
  • Page 21 Reference Manual Introduction 00809-0100-4976 June 2021 Table 1-3: Immunity to False Alarm Sources (continued) Radiation source Immunity distance ft. (m) Arc welding (5/16 in. [6 mm] rod; 210 A) Table 1-4 Ambient light extremes (darkness to bright light with snow, water, rain, desert glare, and fog) Bright colored clothing, including red and safety orange Electronic flash (180 W-seconds minimum...
  • Page 22 Outputs are available according to the default configuration or the wiring options selected for the detector. Determine the outputs of your model according to Table 1-6. The detector incorporates several types of output suitable to different control systems. ® • 0-20 mA (stepped) with HART Emerson.com/Rosemount...
  • Page 23 Reference Manual Introduction 00809-0100-4976 June 2021 • Relays (alarm, fault, auxiliary) ® • RS-485 Modbus Table 1-6: Available Output Types Output type Version Detector status Alarm relay 975HR- output configurations The relay is N.O. 1AXXXXX, 1RXXXXX, and 2RXXXXX 975HR - output configurations The relay is N.O.
  • Page 24 Auxiliary Relay is set to Yes. NOTICE The auxiliary relay is available only in models with output configurations - 1RXXXXX and 2RXXXXX. The 0-20 mA is available only in models with output configurations - 1AXXXXX, 2AXXXXX, and 3AXXXXX. Emerson.com/Rosemount...

  • Page 25: Internal Detector Tests

    Reference Manual Introduction 00809-0100-4976 June 2021 Internal detector tests The detector performs two types of self-tests: • Continuous feature test • Built-in test (BIT) 1.6.1 Continuous feature test The detector is supplied with default settings, containing Continuous Feature Test. To ®...
  • Page 26 Fault relay • Output configurations 1A, 2A, and 1R: remain CLOSED • Output configurations 3A and 2R: remain OPEN 0-20 mA output Output configurations 1A, 2A, and 3A: Normal (4 mA) Power LED Green, flashing, 1 Hz on (Normal) Emerson.com/Rosemount...
  • Page 27 Reference Manual Introduction 00809-0100-4976 June 2021 Table 1-10: Results of an Unsuccessful Built-in Test Output Result Fault relay • Output configurations 1A, 2A, and 1R: change to OPEN • Output configurations 3A and 2R: change to CLOSED 0-20 mA output Output configurations 1A, 2A, and 3A: BIT Fault (2 mA) Power LED...
  • Page 28 Introduction Reference Manual June 2021 00809-0100-4976 Emerson.com/Rosemount...

  • Page 29: Installing The Detector

    Reference Manual Installing the detector 00809-0100-4976 June 2021 Installing the detector This chapter provides basic guidelines for installing the detector. It does not attempt to cover all of the standard practices and codes of installation. Rather, it emphasizes specific points of consideration and provides some general rules for qualified personnel. Wherever applicable, special safety precautions are stressed.

  • Page 30: Unpack

    Mount the detector on the tilt Part of the kit mount. Flat screwdriver 6 mm Connect ground terminal. Standard tool Flat screwdriver 2.5 mm Connect wires to the terminal Standard tool blocks. Hex key 5/16-in. Scrw detector plug. Part of the kit Emerson.com/Rosemount...

  • Page 31: Certification Instructions

    Reference Manual Installing the detector 00809-0100-4976 June 2021 For wiring, use color-coded conductors or suitable wire markings or labels. You may use 12 to 20 AWG (0.5 mm to 3.5 mm ) wires for site wiring. Select wire gauge based on the number of detectors used on the same line and the distance from the control to the ground unit, in compliance with specifications.

  • Page 32: Installing Cables

    After pulling the conductor cables through the conduits, perform a continuity test. Installing the tilt mount (PN 00975-9000-0001) The tilt mount (PN 00975-9000-0001) enables the detector to rotate up to 60 degrees in all directions. Figure 2-1 shows the detector mounted on the tilt mount. Emerson.com/Rosemount...
  • Page 33 Reference Manual Installing the detector 00809-0100-4976 June 2021 Figure 2-1: Detector with Tilt Mount A. Cover bolts B. Back cover C. Tilt mount plate D. Horizontal locking screw E. Tilt mount F. Vertical locking screw G. Detector holding screw H. Tilt mount holding plate I.
  • Page 34 Installing the detector Reference Manual June 2021 00809-0100-4976 2.6.1 Assemble the tilt mount Figure 2-2: Tilt Mount Assembly A. Tilt holding plate B. Tilt mount C. Horizontal locking screw D. Vertical locking screw E. Detector holding plate Emerson.com/Rosemount...
  • Page 35 Reference Manual Installing the detector 00809-0100-4976 June 2021 Figure 2-3: Tilt Mount Assembly Dimensions To install the tilt mount: Procedure 1. Place the tilt mount in its designated location and secure it with four (4) fasteners through four (4) holes 0.14 in. (7 mm) in diameter. Use the four (4) screws and spring washers according to the kit.

  • Page 36: Connect The Detector

    4. Use a ¾-in. - 14 national pipe thread (NPT) explosion-proof conduit connection or M25 x 1.5 flameproof gland to assemble the cable/conduit to the detector. 5. Connect the wires to the required terminals on the terminal board according to the wiring diagram. Figure 2-4 Table 2-2. Emerson.com/Rosemount...
  • Page 37 Reference Manual Installing the detector 00809-0100-4976 June 2021 Figure 2-4: Detector with Cover Removed A. Terminal chamber B. Terminals C. Internal earth terminal D. Earth terminal E. Detector holding screw F. Conduit/cable entry G. See Table 2-2. H. Alarm relay (C) I.
  • Page 38 RS-485 + (1) RS-485 + (1) RS-485 + (1) RS-485 - (1) RS-485 - (1) RS-485 - (1) RS-485 - (1) RS-485 - (1) RS-485 GND RS-485 GND RS-485 GND RS-485 GND RS-485 GND ® Available with the HART protocol. Emerson.com/Rosemount...

  • Page 39: Configure The Detector

    Reference Manual Installing the detector 00809-0100-4976 June 2021 Output configuration notes • RS-485 is used for network communication, as specified in RS-485 communication network, (terminals 10, 11, and 12) and to connect (in safe areas) to PC/laptop for configuration/diagnostics. • Alarm relay —...
  • Page 40 Table 2-3. The Antiflare mode is selected to prevent false alarms in locations where fast flares may be present. The time delay for fire alarms in this mode ranges from 2.5 to 15 seconds (usually less than 10 seconds). Emerson.com/Rosemount...
  • Page 41 Reference Manual Installing the detector 00809-0100-4976 June 2021 Table 2-3: Functions Function Setting Alarm latch • Yes: Enable alarm latching. • No: Disable alarm latching (default). Auxiliary relay • Yes: Activate auxiliary relay at warning level. • No: Activate auxiliary relay at alarm level (default). Automatic BIT •...
  • Page 42 Installing the detector Reference Manual June 2021 00809-0100-4976 Emerson.com/Rosemount...

  • Page 43: Operating The Detector

    Reference Manual Operating the detector 00809-0100-4976 June 2021 Operating the detector This chapter describes how to power up and test the detector. It also includes some very important safety checks that you should make before operating the detector. Power up Follow these instructions carefully to obtain optimal performance from the detector over its life cycle.

  • Page 44: Testing Procedures

    This section describes the proof testing procedure for proper operation of the detector. Test the detector using the manual built-in test (BIT) or the flame simulator. The detector performs the internal test continuously and the automatic built-in test every fifteen minutes; for more details, refer to Built-in test (BIT) Emerson.com/Rosemount...
  • Page 45 Reference Manual Operating the detector 00809-0100-4976 June 2021 3.3.1 Automatic built-in test Check that the indicators show normal conditions. Power 3.3.2 Manual built-in test To perform a manual built-in test: NOTICE If the function setup Alarm BIT and or Auxiliary BIT are set to YES (default NO), the alarm, auxiliary relay, and 0-20 mA outputs are activated during a manual built-in test.
  • Page 46 Alarm relay Activated For a few seconds and then returns to Normal Auxiliary relay Activated For a few seconds and then returns to Normal Fault relay Remains active during the test Red, steady The detector is now ready for operation. Emerson.com/Rosemount...

  • Page 47: Maintenance And Troubleshooting

    This chapter deals with preventative maintenance, describes possible faults in detector operation, and indicates corrective measures. Ignoring these instructions may cause problems with the detector and may invalidate the warranty. Whenever a unit requires service, please contact Emerson or its authorized distributer for assistance. Maintenance This section describes the basic maintenance steps you should take to keep the detector in good working condition.

  • Page 48: Troubleshooting

    • Entries for every maintenance operation performed, including the description of the operation, date, and personnel ID If you send a unit to Emerson or a distributer for service, include a copy of the maintenance records. Troubleshooting This section is intended to be a guide to correct problems that may happen during normal operation.
  • Page 49 Reference Manual Maintenance and troubleshooting 00809-0100-4976 June 2021 Recommended actions 1. Check the voltage at the detector; verify at least 24 V at the detector terminal. 2. Send the detector back for repairs. 4.2.3 Fault relay at N.O. Yellow/amber LED flashes at 4 Hz. 0-20 mA at 2 mA Potential cause Built-in test (BIT) fault: faulty detector...
  • Page 50 Maintenance and troubleshooting Reference Manual June 2021 00809-0100-4976 Emerson.com/Rosemount...

  • Page 51: Appendix A Specifications And Reference Data

    Reference Manual Specifications and reference data 00809-0100-4976 June 2021 Specifications and reference data Technical specifications Table A-1: Technical Specifications Spectral response Multi IR bands Detection range (at Fuel ft. / m Fuel ft. / m highest sensitivity setting n-Heptane 215 / 65 Kerosene 150 / 45 for 1 ft.

  • Page 52: Outputs

    (N.O.), alarm relay (N.O., N.C.) • Output configuration 3A: power, RS-485, 0-20 mA (source) and HART protocol, fault relay (N.O.), alarm relay (N.O., N.C.) • Output configuration 1R: power, RS-485, fault relay (N.C.), auxiliary relay (N.O.), alarm relay (N.O.) Emerson.com/Rosemount...
  • Page 53 Reference Manual Specifications and reference data 00809-0100-4976 June 2021 • Output configuration 2R: power, RS-485, fault relay (N.O.), auxiliary relay (N.O.), alarm relay (N.O.) Electrical • Dry contact relays outputs Table A-3: Contact Ratings Relay name Type Normal position Maximum ratings Alarm SPDT...

  • Page 54: Mechanical Specifications

    Dimensions 4 x 4.6 x 6.18 in. (101.6 x 117 x 157 mm) Weight 6.1 lb. (2.8 kg) Environmental specifications The Rosemount 975HR is designed to withstand harsh environmental conditions. High temperature • Designed to meet DNVGL-CG-0339, class D Emerson.com/Rosemount...
  • Page 55 Reference Manual Specifications and reference data 00809-0100-4976 June 2021 • Operating temperature: +167 °F (+75 °C) • Storage temperature: +185 °F (+85 °C) Low temperature • Designed to meet DNVGL-CG-0339, class D • Operating temperature: -57 °F (-50 °C) • Storage temperature: -65 °F (-55 °C) Humidity The Rosemount 975 detector conforms to DNVGL-CG-0339, class B.
  • Page 56 Specifications and reference data Reference Manual June 2021 00809-0100-4976 Emerson.com/Rosemount...

  • Page 57: Appendix B Wiring Instructions

    Reference Manual Wiring instructions 00809-0100-4976 June 2021 Wiring instructions General instructions for electrical wiring Follow the instructions detailed in this section for determining the correct wire gauge to be used for this installation. 1. Use Table B-1 to determine the required wire gauge/size for general wiring, such as relay wiring.
  • Page 58 B-1, the resistance per 100 m for 1.5 mm is 1.4 Ω). You calculate the voltage drop in the wire as follows: The minimum voltage of the power supply should be 20 V + 5.6 V = 25.6 V. Emerson.com/Rosemount...

  • Page 59: Typical Wiring Configurations

    Reference Manual Wiring instructions 00809-0100-4976 June 2021 Typical wiring configurations This section describes examples of typical wiring configurations. Figure B-1: Wiring terminals A. See table. B. Alarm relay (C) C. Ground D. Alarm relay: normally open (N.O.) E. Fault relay (C) Output configuration Terminals Fault relay: normally closed...
  • Page 60 Auxiliary relay (N.O.) Auxiliary relay (N.O.) Figure B-2: Typical Wiring for Four-Wire Controllers (Using Output Configuration 1A or 2A) A. Controller B. First detector C. Second detector D. Last detector E. Power supply F. Alarm loop G. End of line (EOL) Emerson.com/Rosemount...
  • Page 61 Reference Manual Wiring instructions 00809-0100-4976 June 2021 Figure B-3: 0-20 mA Output Configuration 1A (Sink 4-Wire) - Default A. Detector B. Controller C. Input power 18-32 Vdc D. Return E. 0-20 mA meter Rosemount 975HR...
  • Page 62 Wiring instructions Reference Manual June 2021 00809-0100-4976 Figure B-4: 0-20 mA Output Configuration 1A (Converted to Source Three-Wire) A. Detector B. Controller C. Input power 18-32 Vdc D. Return E. 0-20 mA meter Emerson.com/Rosemount...
  • Page 63 Reference Manual Wiring instructions 00809-0100-4976 June 2021 Figure B-5: 0 - 20 mA Output Configuration 1A (Non-Isolated Sink Three-Wire) A. Detector B. Controller C. Input power 18-32 Vdc D. Return E. 0-20 mA meter Rosemount 975HR...
  • Page 64 Figure B-6: 0-20 mA Output Configurations 2A and 3A (Source Three-Wire Available ® with HART Protocol) A. Detector B. Controller C. Input power 18-32 Vdc D. Return E. 0-20 mA meter NOTICE There are no 0-20 mA outputs in output configurations 1R and 2R. Emerson.com/Rosemount...

  • Page 65: Appendix Crs-485 Communication Network

    Reference Manual RS-485 communication network 00809-0100-4976 June 2021 RS-485 communication network By using the RS-485 network capability of the detector and additional software, you can connect up to 32 detectors in an addressable system with four wires only (two for power and two for communication).
  • Page 66 RS-485 communication network Reference Manual June 2021 00809-0100-4976 Emerson.com/Rosemount...

  • Page 67: Appendix D Accessories

    Rosemount 975HR flame detector. Flame simulator Emerson designed the flame simulators specifically for use with Rosemount flame detectors. The flame simulator emits infrared radiation in a unique sequential pattern corresponding to and recognizable by the detector as fire. This allows the detectors to be tested under simulated fire conditions without the associated risks of an open flame.
  • Page 68 When testing, keep a distance of at least 20 in. (50 cm) from the detector. 2. Press the Operation button once. The flame simulation lasts for fifty seconds. The detector sends an alarm signal (solid red LED). Emerson.com/Rosemount...
  • Page 69 Reference Manual Accessories 00809-0100-4976 June 2021 3. Wait 20 seconds before repeating the test. 4. Verify that the optical window is clean. D.1.4 Range Table D-1: Sensitivity Ranges Sensitivity Detection range (ft. / m) Standard test range (ft. / m) 1 (low) 50 / 15 6.6 / 2...
  • Page 70 Use only Rosemount battery pack, PN 00975-9000-0012. 7. Screw on the locking disc (C). 8. Screw on the back cover (D). 9. Lock the back cover with the locking screw. NOTICE For more information, refer to the Rosemount FS-HR-975 Flame Simulator Manual (00809-0900-4975). Emerson.com/Rosemount...
  • Page 71 Reference Manual Accessories 00809-0100-4976 June 2021 D.1.7 Technical specifications Table D-2: Flame Simulator Technical Specifications General • Temperature range: -4 to +122 °F (-20 to +50 °C) • Vibration protection: 1 g (10 - 50 Hz) Electrical • Rechargeable four cell lithium-ion battery: —...

  • Page 72: Tilt Mount: Pn 00975-9000-0001

    The tilt mount provides accurate directional selection for optimum area coverage. Figure D-3: Tilt Mount Duct mount The duct mount limits the cone of vision of the installed detector to 70 degrees horizontal and vertical. For more instructions, refer to the Duct Mount Manual (00809-0600-4975). Emerson.com/Rosemount...

  • Page 73: Weather Cover: Pn 00975-9000-0003

    Reference Manual Accessories 00809-0100-4976 June 2021 Weather cover: PN 00975-9000-0003 The weather cover protects the detector from different weather conditions, such as snow and rain. Figure D-4: Weather Cover Rosemount 975HR...

  • Page 74: Air Shield: Pn 00975-9000-0005

    Tube outside diameter: ¼-in. national pipe thread (NPT)/6 mm Connecting adapter size: 7/16-in. NPT Operation temperature: -67 to 185 °F (-55 to 85 °C) For more instructions, refer to the Rosemount 975 Air Shield Manual (00809-0700-4975). Figure D-5: Rosemount 975 Air Shield Emerson.com/Rosemount...

  • Page 75: Appendix Esil-2 Features

    Reference Manual SIL-2 features 00809-0100-4976 June 2021 SIL-2 features This appendix details the special conditions to comply with the requirements of EN 61508 for SIL 2. The Rosemount 975HR Flame Detector can only be used in low or high demand mode applications;...
  • Page 76 0-20 mA interface, and the relays) must be examined at least every six or twelve months (see Safety relevant parameters) when the flame detector must be switched OFF and ON. 2. The window of the sensor must be examined at appropriate time intervals for partial contamination. Emerson.com/Rosemount...
  • Page 77 Reference Manual SIL-2 features 00809-0100-4976 June 2021 ® 3. The HART and the RS-485 interfaces must not be used for the transmission of the safety-related data. Rosemount 975HR...
  • Page 78 SIL-2 features Reference Manual June 2021 00809-0100-4976 Emerson.com/Rosemount...

  • Page 79: Appendix F End Of Line Resistor

    Reference Manual End of line resistor 00809-0100-4976 June 2021 End of line resistor The Rosemount 975 series can be equipped with an EOL resistor inside the flameproof 'd' terminal compartment. The EOL resistor can be situated in the rear part, which is Ex e or Ex d, depending on the application.
  • Page 80 2021 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...

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