Emerson MMI-20020979 - Manual

□ Make sure that the process gas meets the recommended characteristics regardingcomposition, temperature, and pressure for your installation. □ Verify that you have all equipment necessary for your installation. Depending onyour application, you may be required to install additional parts for optima...

1.3 Recommended sample flow rate Use the smallest acceptable flow rate for the process gas passing through the meter. Thisensures a sample gas flow rate that is representative of the main flow with regard to theproportions of different gas constituents. Micro Motion recommends a gas flow rate of 5 ±...

1.4 Power requirements Following are the DC power requirements to operate the meter: • 24 VDC, 0.45 W maximum • Minimum 22.8 VDC with 1000 m (3280 ft) of 0.20 mm 2 (18 AWG) power-supply cable • At startup, power source must provide a minimum of 0.5 A of short-term current ata minimum of 19.6 V at th...

Minimum wire area (mm 2 per meter) Figure 1-3: 0.000 0.050 0.100 0.150 0.200 0.250 0.300 0.350 0.400 0.450 0.500 0.550 0.600 0.650 0.700 0.750 0.800 0.850 0.900 100 200 300 400 500 600 700 800 900 100 0 M in im um W ire A re a (m m 2 ) Distance of Installation (m) M inimum Wire Ar ea (m m 2 ) 22.8V2...

Micro Motion thermo-well pocket dimensions Figure 1-4: 6.00 (152.30) Ø3.94 (100.00) 1.59 (40.30) 2.83 (72.00) Dimensions in inches (mm) 1.6 Recommended installations for gas density applications Micro Motion recommends specific installations for the GDM depending on the gasdensity application – as d...

Meter installation in a pressure recovery application The most common location for a density device in an orifice plate metering system isdownstream from the orifice plate. This installation is commonly referred to as thepressure recovery method. The pressure recovery method allows an optimal gas fl...

Meter installation in pressure recovery application Figure 1-5: STATUS SCROLL SELECT C A E A B D G F H J K I GDM A. Meter isolation valves B. Flowmeter C. Venting valve D. Flow control needle valve E. Filter F. Pipeline diameter G. Differential pressure transmitter H. Density point I. Distance is ei...

• Pressure drops through the valves and filters do not affect the reading. The pressureinside the meter and at the gas outlet is equal to the pressure at the orificedownstream point. • The correct expansion factor for the downstream point is used in the orifice flowcalculations. • The measured densi...

Meter installation in differential pressure application Figure 1-6: STATUS SCROLL SELECT E A A B D C F G H GDM A. Meter isolation valves B. Flowmeter C. Venting valve D. Flow control needle valve E. Filter F. Differential pressure transmitter G. Thermal insulation H. Vent/vacuum test point Note Do n...

Tip To avoid excessive pressure drops in your sample pipeline, be sure to monitor the condition of thefilters. Do this by varying the sample flow rate and monitoring the magnitude of the resultant densitychanges. Pressure drops through the filters can cause density errors if they become too large. 1...

Meter installation in a vented gas application Figure 1-7: STATUS SCROLL SELECT A B D F A E C G H GDM GDM I A. Meter isolation valves B. Flowmeter C. Venting valve D. Flow control needle valve E. Filter F. Pressure regulator G. Thermal insulation H. Vent/vacuum test point I. Low-pressure vent system...

Meter installation in an ultrasonic meter application Figure 1-8: STATUS SCROLL SELECT E C A B D A G H F GDM A. Meter isolation valves B. Flowmeter C. Venting valve D. Flow control needle valve E. Filter F. Annubar flowmeter G. Thermal insulation H. Vent/vacuum test point Note Do not insulate the tr...

Meter installation with a turbine flow meter Figure 1-9: STATUS SCROLL SELECT A B D A E C H F G GDM A. Meter isolation valves B. Flowmeter C. Venting valve D. Flow control needle valve E. Filter F. Turbine flowmeter G. Thermal insulation H. Vent/vacuum test point Note Do not insulate the transmitter...

CAUTION! Handle the meter with care. Follow all corporate, local, and national safety regulationsfor lifting and moving the meter. 2. Visually inspect the meter for any physical damage. If you notice any physical damage to the meter, immediately contact Micro MotionCustomer Support at flow.support@e...

2 Mounting Topics covered in this chapter: • Mount the meter in the pipeline • Connect the gas bypass lines • Rotate the electronics on the meter (optional) • Rotate the display on the transmitter (optional) • Post-installation check 2.1 Mount the meter in the pipeline Prerequisites Important Micro ...

Meter installation pieces Figure 2-1: STATUS SCROLL SELECT C D E B A A. M8 socket-head cap screw (for mounting) B. Meter housing C. Aluminum sleeve (cylinder) D. Anti-vibration gasket E. Thermo-well pocket Procedure 1. (Recommended) Install the thermo-well pocket in the aperture created in thepipeli...

Typical installation in pipeline (with thermo-well pocket) Figure 2-2: STATUS SCROLL SELECT Dimensions in inches (mm) 3.74 (95) 2.2 Connect the gas bypass lines Once you have mounted the meter in the pipeline, you are ready to connect the gasbypass lines. Adjacent to the gas connection ports, the me...

Gas inlet/outlet connectors Figure 2-3: STATUS SCROLL SELECT C B A A. Process gas outletB. Process gas inletC. Filter Mounting Installation Manual 19

2.3 Rotate the electronics on the meter (optional) You can rotate the transmitter on the meter up to 90°.1. Using a 4 mm hex key, loosen the cap screw that holds the transmitter in place. Component to secure transmitter in place Figure 2-4: A A. M5 socket-head cap screw 2. Rotate the transmitter clo...

Display components Figure 2-5: B C D A D E A. Transmitter housing B. Sub-bezel C. Display module D. Display screws E. Display cover Procedure 1. If the meter is powered up, power it down. 2. Turn the display cover counterclockwise to remove it from the main enclosure. 3. Carefully loosen (and remove...

2.5 Post-installation check After you complete the installation of the meter, pressure test the meter and associatedpipework to 1 ½ times the maximum operating pressure. Mounting 22 Micro Motion ® Gas Density Meters

3 Wiring Topics covered in this chapter: • Available output terminals and wiring requirements • Hazardous area output wiring 3.1 Available output terminals and wiring requirements Three pairs of wiring terminals are available for transmitter outputs. These outputs varydepending on your transmitter o...

Information provided about wiring the safety barriers and galvanic isolators is intended asan overview. You should wire the meter according to the standards that are applicable atyour site. CAUTION! • Meter installation and wiring should be performed by suitably trained personnel only inaccordance w...

RS-485 output and cable entity parameters (MTL7761AC) Table 3-3: Input parameters Voltage (U i ) 18 VDC Current (I i ) 100 mA Internal capacitance (C i ) 1 nF Internal inductance (L i ) 0.0 H Output parameters Voltage (U o ) 9.51 VDC Current (instantaneous) (I o ) 480 mA Current (steady state) (I) 1...

3.2.2 Wire all available outputs using safety barriers Micro Motion provides a safety barrier installation kit for wiring the meter in a hazardousarea. Contact your local sales representative or Micro Motion Customer Support at [email protected] for more information on ordering a barrier kit....

Hazardous area mA/DO/TPS output wiring using safety barriers Figure 3-1: Bus Bar Hazardous Area Non-Hazardous Area MTL7761AC RS-485 A RS-485 B 3 4 1 2 24 VDC 24 VDC MTL7728P+ 24 VDC 3 4 1 2 MTL7728P+ 3 4 1 2 250 Ω MTL7728P+ 3 4 1 2 HART Device Signal Device See note mA1+ HART RS-485 PWR mA2/ TPS/DO ...

CAUTION! • Meter installation and wiring should be performed by suitably trained personnel only inaccordance with the applicable code of practice. • Refer to the hazardous area approvals documentation shipped with your meter. Safetyinstructions are available on the Micro Motion Product Documentation...

Hazardous area output wiring using galvanic isolators (mA outputs option) Figure 3-2: mA1+ HART RS-485 PWR mA2 Hazardous Area Non-Hazardous Area MTL7761AC RS-485 A RS-485 B 3 4 1 2 MTL5541 2 1 14 13 12 11 MTL5523 2 1 24 VDC 14 13 1211 24 VDC LINK 250 Ω MTL5541 2 1 14 13 12 11 24 VDC 250 Ω AB HART De...

The switches are located on the side of the isolator, and must be set to either Off (the up position) or On (the down position). MTL5532 switch location (plus ON/OFF switch position) Figure 3-4: 1 2 3 4 OFF ON MTL5532 switch settings Table 3-4: Switch ON/OFF? 1 ON 2 OFF 3 OFF 4 OFF Wiring Installati...

4 Grounding The meter must be grounded according to the standards that are applicable at the site.The customer is responsible for knowing and complying with all applicable standards. Prerequisites Micro Motion suggests the following guides for grounding practices: • In Europe, EN 60079-14 is applica...