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Summary of Contents for Emerson Rosemount 8712EM
- Page 1 Quick Start Guide 00825-0100-4445, Rev AC June 2024 Rosemount 8712EM Transmitter ™ with HART Protocol Includes support for 8750W...
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Page 2: Table Of Contents
Quick Start Guide June 2024 Contents Safety............................. 3 Introduction..........................5 Pre-installation..........................6 Mounting.............................11 Wiring............................13 Basic Configuration........................32 Rosemount 8712EM Transmitter with HART Protocol... -
Page 3: Safety
June 2024 Quick Start Guide 1 Safety WARNING • Failure to follow these installation guidelines could result in serious injury or death. • Installation and servicing instructions are for use by qualified personnel only. Do not perform any servicing other than that contained in the operating instructions, unless qualified. - Page 4 • Completely remove all electrical connections from both sensor and transmitter prior to welding on the pipe. For maximum protection of the sensor, consider removing it from the pipeline. Rosemount 8712EM Transmitter with HART Protocol...
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Page 5: Introduction
• For additional installation information, configuration, maintenance, and troubleshooting, refer to the Rosemount ™ 8712EM Transmitter with HART Protocol Reference Manual All user documentation can be found at www.emerson.com. For more contact information see Emerson Flow customer service. 2.1 Return policy Emerson procedures must be followed when returning equipment. -
Page 6: Pre-Installation
Factory configuration Alarm mode High Internal/external analog power Internal Internal/external pulse power External Transmitter security The analog power switch and pulse power switches are not available when ordered with intrinsically safe output, ordering code B. Rosemount 8712EM Transmitter with HART Protocol... - Page 7 June 2024 Quick Start Guide In most cases, it is not necessary to change the setting of the hardware switches. If the switch settings need to be changed, refer to the product reference manual. Be sure to identify any additional options and configurations that apply to the installation.
- Page 8 Quick Start Guide June 2024 Figure 3-1: Rosemount 8712EM Dimensional Drawing (229) (89) (71) (79) 12.0 (306) 11.2 (283) 17.7 (449) 11.4 (289) (49) (43) (49) (40) (99) (198) A. Conduit entry, ½-14 NPT (4 places) B. Ground lug C. LOI keypad cover D.
- Page 9 The transmitter requires external power. Ensure access to a suitable power source. Table 3-2: Electrical Data Rosemount 8712EM Flow Transmitter Power input AC power: 90–250VAC, 0.45A, 40VA Standard DC power: 12–42VDC, 1.2A, 15W...
- Page 10 • 13,123 ft (4000 m) at rated input power voltage (90–250 VAC) • 16,404 ft (5000 m) at maximum input power voltage of 150 VAC Note For complete environmental and other specifications, refer to the product reference manual. Rosemount 8712EM Transmitter with HART Protocol...
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Page 11: Mounting
June 2024 Quick Start Guide 4 Mounting Wall mount transmitters are shipped with mounting hardware for use on a 2 inch (50 mm) pipe or flat surface. Figure 4-1: Mounting bracket A. U-bolt B. Fasteners C. Washer plate 4.1 Pipe mounting Procedure 1. Assemble the hardware and transmitter housing on the pole as shown in Figure 4-1. -
Page 12: Surface Mounting
Surface mounting Procedure Attach the transmitter to the mounting location using customer supplied mounting screws. The installation of the transmitter shall be rated for four (4) times the weight of the transmitter or 44lbs (20kgs). Rosemount 8712EM Transmitter with HART Protocol... -
Page 13: Wiring
June 2024 Quick Start Guide 5 Wiring 5.1 Conduit entries and connections Transmitter conduit entries ports are ½"-14NPT as standard, M20 conduit connections will use an adapter. Conduit connections should be made in accordance with national, local, and plant electrical codes. Unused conduit entries should be sealed with the appropriate certified plugs. - Page 14 5-3. Equivalent Alpha cable part numbers are also provided as an alternative. To order cable, specify length as quantity desired. Equal length of component cables is required. Examples: • 25 feet = Qty (25) 08732-0065-0001 • 25 meters = Qty (25) 08732-0065-0002 Rosemount 8712EM Transmitter with HART Protocol...
- Page 15 June 2024 Quick Start Guide Table 5-1: Component cable kits - standard temperature (-20°C to 75°C) Cable kit # Description Individual Alpha p/n cable 08732-0065-0001 (feet) Kit, component cables, Std Coil 2442C temp (includes Coil and Electrode 2413C Electrode) 08732-0065-0002 (meters) Kit, component cables, Std Coil 2442C...
- Page 16 500–1000 feet (152–304 m). Equal length cable is required for each. For installations using the combination coil drive/electrode cable, see Figure 5-3. Combination cable lengths should be limited to less than 330 feet (100 m). Rosemount 8712EM Transmitter with HART Protocol...
- Page 17 June 2024 Quick Start Guide Figure 5-2: Individual component cables 17 18 19 A. Coil drive B. Electrode C. Twisted, stranded, insulated 14 AWG conductors D. Drain E. Overlapping foil shield F. Outer jacket G. Twisted, stranded, insulated 20 AWG conductors •...
- Page 18 Excessive unshielded length, or failure to connect cable shields properly, may also expose the unit to electrical noise, resulting in an unstable meter reading. Rosemount 8712EM Transmitter with HART Protocol...
- Page 19 June 2024 Quick Start Guide Figure 5-4: Cable ends A. Unshielded length B. Coil C. Electrode D. Combination WARNING Shock hazard! Potential shock hazard across remote junction box terminals 1 and 2 (40V). Quick Start Guide...
- Page 20 Note Junction box appearance and configuration may vary, but terminal numbering is consistent for all junction box types. Table 5-4: Sensor/transmitter wiring Wire color Sensor terminal Transmitter terminal Blue Coil drain 3 or float Rosemount 8712EM Transmitter with HART Protocol...
- Page 21 June 2024 Quick Start Guide (continued) Table 5-4: Sensor/transmitter wiring Wire color Sensor terminal Transmitter terminal Black Yellow White Electrode drain or float Note For hazardous locations, refer to the product reference manual. Quick Start Guide...
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Page 22: Wiring Sensor To Transmitter
Quick Start Guide June 2024 5.4 Wiring sensor to transmitter Figure 5-6: Wiring using component cable Rosemount 8712EM Transmitter with HART Protocol... - Page 23 June 2024 Quick Start Guide Figure 5-7: Wiring using combination cable Quick Start Guide...
- Page 24 – Discrete Out 2 + Discrete In/Out 1 + Discrete In/Out 1 – Discrete In/Out 1 – Discrete In/Out 1 Electrode Reference Electrode Reference Electrode Negative Electrode Negative Electrode Positive Electrode Positive AC (Neutral)/L2 DC (–) Rosemount 8712EM Transmitter with HART Protocol...
- Page 25 June 2024 Quick Start Guide (continued) Table 5-5: Power and I/O terminals Terminal number AC version DC version AC L1 DC (+) Note Polarity: Internally Powered, Terminal 7 (–) Analog HART, Terminal 8 (+) Analog HART. Externally Powered, Terminal 7 (+) Analog HART, Terminal 8 (–) Analog HART Only available with ordering code AX.
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Page 26: Powering The Transmitter
250 VAC. Power line impedance Sources of inductance on the AC power system, such as isolation transformers, must be limited to less than 1 mH at 120 VAC, and 2 mH at 240 VAC. Rosemount 8712EM Transmitter with HART Protocol... - Page 27 June 2024 Quick Start Guide AC power supply requirements Units powered by 90 - 250VAC have the following power requirements. Peak inrush is 35.7A at 250VAC supply, lasting approximately 1ms. Inrush for other supply voltages can be estimated with: Inrush (Amps) = Supply (Volts) / 7.0 Figure 5-9: AC current requirements 0.24 0.22...
- Page 28 Follow these steps to ensure the housing is properly sealed to meet ingress protection requirements: 1. Ensure all wiring is complete and close the lower door. Rosemount 8712EM Transmitter with HART Protocol...
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Page 29: Analog Output
June 2024 Quick Start Guide 2. Tighten the lower door screw until the lower door is tight against the housing. Metal to metal contact of the screw bosses is required to ensure a proper seal. Note Application of excessive torque may strip the threads or break the screw. - Page 30 Terminal polarity for the analog output is reversed between internally and externally powered. Table 5-7: Terminal assignment by power source type Power source Terminal #7 Terminal #8 Internal 4–20 mA negative (–) 4–20 mA positive (+) External 4–20 mA positive (+) 4–20 mA negative (–) Rosemount 8712EM Transmitter with HART Protocol...
- Page 31 June 2024 Quick Start Guide Figure 5-13: Analog loop load limitations 10. 8 A. Load (ohms) B. Power supply (volts) C. Operating region • = 31.25 (V –10.8) • = power supply voltage (volts) • = maximum loop resistance (ohms) Quick Start Guide...
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Page 32: Basic Configuration
–39.3 ft/s to 39.3 ft/s (–12 m/s to 12m/s). There must be at least 1 ft/s (0.3 m/s) span between the URV and LRV. Note If entering a negative number, the minus sign must be entered in the furthest left position on the LOI. Rosemount 8712EM Transmitter with HART Protocol... -
Page 33: Local Operator Interface (Loi)
June 2024 Quick Start Guide Lower range value (LRV) The LRV sets the 4 mA point for the analog output. This value is typically set to zero flow. The units that appear will be the same as those selected under the flow units parameter. The LRV may be set between –39.3 ft/s to 39.3 ft/s (–12 m/s to 12m/s). - Page 34 Quick Start Guide June 2024 Rosemount 8712EM Transmitter with HART Protocol...
- Page 35 June 2024 Quick Start Guide Quick Start Guide...
- Page 36 2024 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.
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