Emerson MMI-20015440 - Manuals

2 Micro Motion 7827 Digital Viscosity Meter Introduction 1.2 About the meter 1.2.1 What is it? The 7827 meter is a digital viscosity meter, based on the proven tuning fork technology of Micro Motion. It is an all-welded sensor designed to be mounted directly into a pipeline or in a tank. Viscosity a...

Installation and Configuration Manual 3 Introduction In stall a ti on (Sh o rt Stem) E lectri cal Conn ecti ons Installation (Long Stem) In tr o ducti on 1.2.3 What is it used for? The 7827 meter is ideally suited to applications where continuous real time measurement of viscosity is required. The m...

Installation and Configuration Manual 5 Installa tion (Shor t Ste m ) Elec tric al Connec tions Installation (Long Stem) In tr o ducti on Chapter 2 Installation (Short Stem) For information on installing a long-stem version of the 7827 digital viscosity meter, see Chapter 3. 2.1 Introduction There a...

6 Micro Motion 7827 Digital Viscosity Meter Installation (Short Stem) Factors which may adversely affect the relevance of the measurements could include: • Measurement used for control purposes being made too far away from the point of control, so that the system cannot respond properly to changes. ...

Installation and Configuration Manual 7 Installation (Short Stem) Installa tion (Shor t Ste m ) Elec tric al Connec tions Installation (Long Stem) In tr o ducti on This next view shows other pipe outlines superimposed: The smaller circle represents a 4" (100 mm) vertical pipe, which because the ...

8 Micro Motion 7827 Digital Viscosity Meter Installation (Short Stem) From this, it would appear that almost every installation requires a separate in situ calibration – a very undesirable situation. The problem is resolved by providing standard calibration geometries which can be used in all pipe w...

Installation and Configuration Manual 9 Installation (Short Stem) Installa tion (Shor t Ste m ) Elec tric al Connec tions Installation (Long Stem) In tr o ducti on 2.3.2 Meter orientation The meter must always be installed horizontally, and orientated to allow flow in the gap between the tines. This...

10 Micro Motion 7827 Digital Viscosity Meter Installation (Short Stem) Figure 2-1 Meter orientation Note: All drawings and dimensions given in the following sections are derived from detailed dimensional drawings. They are given here for planning purposes only. Before commencing fabrication, referen...

Installation and Configuration Manual 11 Installation (Short Stem) Installa tion (Shor t Ste m ) Elec tric al Connec tions Installation (Long Stem) In tr o ducti on The pocket geometry must be consistent with 2" schedule 40 tube in both internal diameter and minimum wall thickness, such as: • In...

12 Micro Motion 7827 Digital Viscosity Meter Installation (Short Stem) Figure 2-2 Free stream 1.5 " Swagelock fitting The installation will conform generally to Schedule 40 pressure ratings. The weldolet fabrication is rated to 100 Bar at ambient temperature. Note: Correct installation and press...

Installation and Configuration Manual 13 Installation (Short Stem) Installa tion (Shor t Ste m ) Elec tric al Connec tions Installation (Long Stem) In tr o ducti on The pocket geometry must be consistent with 2" schedule 40 tube in both internal diameter and minimum wall thickness, i.e.: • Inter...

14 Micro Motion 7827 Digital Viscosity Meter Installation (Short Stem) The three compression fittings on the flow pockets (½" drain, ¾" temp probe, and 1-½" mounting nut for the meter) are rated to above the working pressure of the flow pocket. The fittings may be Swagelok or Parker; bot...

Installation and Configuration Manual 15 Installation (Short Stem) Installa tion (Shor t Ste m ) Elec tric al Connec tions Installation (Long Stem) In tr o ducti on You must first select a location which serves the application objective; e.g. installed close to the point of control. Then, considerat...

16 Micro Motion 7827 Digital Viscosity Meter Installation (Short Stem) Where it is necessary to install the viscometer in a by-pass (either using the free stream installation in a 4" diameter horizontal by-pass, or a flow-through chamber), flow may be maintained using pressure drop, pitot scoop,...

Installation and Configuration Manual 17 Installation (Short Stem) Installa tion (Shor t Ste m ) Elec tric al Connec tions Installation (Long Stem) In tr o ducti on 2.5 Typical installations The following diagrams illustrate some typical solutions for line viscosity measurement, simple base viscosit...

18 Micro Motion 7827 Digital Viscosity Meter Installation (Short Stem) Figure 2-3 Jacketed pipeline installation Alternatively, the viscometer can be installed in a by-pass. By ensuring that the sample is mixed where the by-pass draws off the main pipeline, it is not necessary to discontinue the mai...

Installation and Configuration Manual 19 Installation (Short Stem) Installa tion (Shor t Ste m ) Elec tric al Connec tions Installation (Long Stem) In tr o ducti on 2.5.2 Flow-through chamber The diagram below shows the use of a flow-through chamber. This provides a compact installation and is parti...

Installation and Configuration Manual 21 In stall a ti on (Sh o rt Stem) E lectri cal Conn ecti ons Installation (Long Stem) In tr o ducti on Chapter 3 Installation (Long Stem) For information on installing a short-stem version of the 7827 digital viscosity meter, see Chapter 2. 3.1 Introduction The...

22 Micro Motion 7827 Digital Viscosity Meter Installation (Long Stem) The term achievable accuracy can be used to describe a measure of the product quality that can be realistically obtained from a process system. It is a function of measurement accuracy, stability and system response. High accuracy...

Installation and Configuration Manual 23 Installation (Long Stem) In stall a ti on (Sh o rt Stem) E lectri cal Conn ecti ons Installation (Long Stem) In tr o ducti on 3.2.3 Entrained gas Gas pockets can disrupt the measurement. A brief disruption in the signal caused by transient gas pockets can be ...

Installation and Configuration Manual 25 Installation (Long Stem) In stall a ti on (Sh o rt Stem) E lectri cal Conn ecti ons Installation (Long Stem) In tr o ducti on Figure 3-4 Keeping tines away from objects and disturbed flow (open tank) 5. If there is flow, align the tines such that the flow is ...

26 Micro Motion 7827 Digital Viscosity Meter Installation (Long Stem) Figure 3-6 Avoid deposit build-up (Open-tank) 3.4 Closed-tank installation 1. For closed-tank installations, the long-stemmed 7827 meter should have a factory fitted flange attachment. (This is an option that is specified as a cod...

Installation and Configuration Manual 27 Installation (Long Stem) In stall a ti on (Sh o rt Stem) E lectri cal Conn ecti ons Installation (Long Stem) In tr o ducti on Figure 3-8 Use of standoff section (not supplied)(closed-tank) 3. Keep the tines immersed in fluid (see Figure 3-9). Figure 3-9 Keepi...

28 Micro Motion 7827 Digital Viscosity Meter Installation (Long Stem) Figure 3-11 Allowing for tank lid flexing (closed tank) 6. Keep tines away from objects and disturbed flow (see Figure 3-12). Figure 3-12 Keeping tines away from objects and disturbed flow (Closed-tank) 7. If there is flow, align ...

Installation and Configuration Manual 29 Installation (Long Stem) In stall a ti on (Sh o rt Stem) E lectri cal Conn ecti ons Installation (Long Stem) In tr o ducti on Figure 3-13 Aligning the tines in flow (closed tank) 8. Keep away from deposit build-up (see Figure 3-14). Figure 3-14 Avoid deposit ...

30 Micro Motion 7827 Digital Viscosity Meter Installation (Long Stem) 5. Once the system has stabilized and is leak free, fit the insulation material, remembering also to insulate any flanges.

Installation and Configuration Manual 31 Electrical Connections Installa tion (Shor t Ste m ) Elec tric al Connec tions Installation (Long Stem) In tr o ducti on Installa tion (Shor t Ste m ) Elec tric al Connec tions Installation (Long Stem) In tr o ducti on Installa tion (Shor t Ste m ) Elec tric ...

32 Micro Motion 7827 Digital Viscosity Meter Electrical Connections 4.3 Installation and safety in hazardous areas The 7827 meter is explosive proof and can be installed in a hazardous area without the use of intrinsically safe barriers (or isolators). However, it is still necessary to observe the r...

34 Micro Motion 7827 Digital Viscosity Meter Electrical Connections 4.6 Connecting the 7827 to a 795x series computer 4.6.1 Overview The 7827 requires a 795x series computer (Signal Converter or Flow Computer) with liquid-based application software for it to be functional. This section provides a gu...

Installation and Configuration Manual 35 Electrical Connections Installa tion (Shor t Ste m ) Elec tric al Connec tions Installation (Long Stem) In tr o ducti on Installa tion (Shor t Ste m ) Elec tric al Connec tions Installation (Long Stem) In tr o ducti on Installa tion (Shor t Ste m ) Elec tric ...

Installation and Configuration Manual 37 Electrical Connections Installa tion (Shor t Ste m ) Elec tric al Connec tions Installation (Long Stem) In tr o ducti on Installa tion (Shor t Ste m ) Elec tric al Connec tions Installation (Long Stem) In tr o ducti on Installa tion (Shor t Ste m ) Elec tric ...

38 Micro Motion 7827 Digital Viscosity Meter Electrical Connections Electrical checks Measure the current consumption and the supply voltage at the meter amplifier. They should be within the following limits: • Current: 40 mA to 70 mA (Measured in series at the “ SUPPLY + ” terminal) • Voltage: 22.8...

Installation and Configuration Manual 39 C a libration C h eck G e n e ral Maintena nce Using 795 X Pr oce ssing Elec tr onic s Chapter 5 Using 7950/7951 Processing Electronics 5.1 Using the 7950 / 7951 Processing Electronics For details on connecting the 7827 meter to the Micro Motion signal conver...

Installation and Configuration Manual 41 Cal ibratio n Ch eck General Mai n tena nce Using 795 X Pr oce ssing Elec tr onic s Chapter 6 Calibration Check 6.1 Introduction The following information details the calibration method and performance of the 7827 digital viscosity meter and covers the follow...

42 Micro Motion 7827 Digital Viscosity Meter Calibration Check A fourth fluid is used as an overcheck to verify the calibration for each viscosity range. Each check is monitored by the Micro Motion Quality Assurance Department. 6.2.2 Density The 7827 meter is calibrated within the standard shroud ag...

Installation and Configuration Manual 43 Calibration Check Cal ibratio n Ch eck General Mai n tena nce Using 795 X Pr oce ssing Elec tr onic s 6.3 In-line calibration 6.3.1 Viscosity The 7827 meter is calibrated to operate in installations where the boundary formed by the surrounding metalwork is at...

44 Micro Motion 7827 Digital Viscosity Meter Calibration Check For unstable or high-pressure vapor liquids A pressure pyknometer can be used. The pressure pyknometer and its associated pipework can be coupled to the pipeline so that a sample of the product flows through it. When equilibrium is reach...

Installation and Configuration Manual 45 Calibration Check Cal ibratio n Ch eck General Mai n tena nce Using 795 X Pr oce ssing Elec tr onic s Figure 6-1 Density in-line calibration procedure Note: The values of K0' and K2' are now used in the general density equation in the 795x, replacing the orig...

46 Micro Motion 7827 Digital Viscosity Meter Calibration Check Viscosity calibration is effectively immune to temperature or pressure errors when operating with Newtonian fluids. As a general guide, Table 6-1 shows the accuracy of the 7827 meter: 6.4.2 Density The 7827 meter is calibrated for densit...

Installation and Configuration Manual 47 Calibration Check Cal ibratio n Ch eck General Mai n tena nce Using 795 X Pr oce ssing Elec tr onic s Figure 6-2 Example calibration certificate for the 7827 digital viscosity meter example example CALIBRATION CERTIFICATE 7827CBANATEABA VISCOMETER SERIAL NO :...

Installation and Configuration Manual 49 Cal ibratio n Ch eck General Mai n tena nce Using 795 X Pr oce ssing Elec tr onic s Chapter 7 General Maintenance 7.1 Introduction This chapter describes which procedures to take in the event of a fault developing with the 7827 digital viscosity meter system....

50 Micro Motion 7827 Digital Viscosity Meter General Maintenance 6. Check that the Signal Converter is providing adequate power to the meter and that the Signal Converter itself is functioning properly. Check calibrations should be carried out at specified intervals in order to highlight a malfuncti...

Installation and Configuration Manual 51 General Maintenance Cal ibratio n Ch eck General Mai n tena nce Using 795 X Pr oce ssing Elec tr onic s Error on indicated density If the indicated density is in error, follow the table below and, if necessary, refer to the other tables later in the chapter t...

52 Micro Motion 7827 Digital Viscosity Meter General Maintenance 7.3.2 Checking the power consumption A lot of information is gained from checking the power consumption at various parts of the circuit between Signal Converter and meter. Table 7-2 Error checking for density What to check: What to loo...

54 Micro Motion 7827 Digital Viscosity Meter General Maintenance Installation dimensions Check the key dimensions as specified in Chapter 2 for your installation. • Your key dimensions should match those detailed in the Installation chapter for your meter for your mounting configuration. Product bui...

Installation and Configuration Manual 55 Saf e ty Cer tif icatio n Retu rn P o li cy Product Data Calcula ted P a rame ters Appendix A Calculated Parameters A.1 Introduction The following information details the equations used in the Micro Motion ® signal converters to translate the raw data from th...

56 Micro Motion 7827 Digital Viscosity Meter Calculated Parameters A.2.2 General viscosity equation The quality factor of a resonator is proportional to the inverse square root of viscosity. To calibrate the resonator against fluid viscosity, the following quadratic expression is used: η = V * ( V0 ...

Installation and Configuration Manual 57 Calculated Parameters Saf e ty Cer tif icatio n Retu rn P o li cy Product Data Calcula ted P a rame ters ρ v = ρ t - [ K20 + K21*X + K22*X 2 ] [5] where: • ρ v = Viscosity-corrected density (kg/m 3 ) • ρ t = Temperature-corrected density (kg/m 3 ) • X = 1/Q 2...

58 Micro Motion 7827 Digital Viscosity Meter Calculated Parameters Figure A-1 The Velocity Of Sound (VOS) / density relationship A.3.6 Density scaling Once the indicated density has been corrected for temperature, viscosity and VOS, the result is scaled to display density in any set of units. The fo...

Installation and Configuration Manual 59 Safety Certification Saf e ty Cer tif icatio n Retu rn P o li cy Product Data Calcula ted P a rame ters Appendix B Safety Certification B.1 Safety certification Please contact Micro Motion if you need to have copies of the latest safety certification for the ...

Installation and Configuration Manual 61 Saf e ty Cer tif icatio n Retu rn P o li cy Product Data Calcula ted P a rame ters Appendix C Product Data C.1 Density / temperature relationship of hydrocarbon products C.1.1 Crude oil C.1.2 Refined products Table C-1 Crude oil Temp. (°C) Density (kg/m 3 ) 6...

62 Micro Motion 7827 Digital Viscosity Meter Product Data The above tables are derived from equations, which form the basis of the data in the Revised Petroleum Measurement Tables (IP 200, ASTM D1250, API 2540 and ISO R91 Addendum 1). The density temperature relationship used is: Where: = Density at...

Installation and Configuration Manual 63 Product Data Saf e ty Cer tif icatio n Retu rn P o li cy Product Data Calcula ted P a rame ters C.1.4 Density of ambient air Taken at a relative humidity of 50%. C.1.5 Density of water Use pure, bubble-free water. Table C-4 Density of ambient air (in kg/m 3 )...

64 Micro Motion 7827 Digital Viscosity Meter Product Data C.1.6 Velocity of sound in liquids Table C-6 Velocity of sound in liquids Liquid Temp. (t °C) Velocity of Sound ( ms –1 ) Rate of Change ( ms –1 K –1 ) Acetic acid 20 1173 ---- Acetone 20 1190 –4.5 Amyl acetate 29 1173 ---- Aniline 20 1656 –4...

Installation and Configuration Manual 67 Saf e ty Cer tif icatio n Retu rn P o li cy Product Data Calcula ted P a rame ters Appendix D Return Policy D.1 General guidelines Micro Motion procedures must be followed when returning equipment. These procedures ensure legal compliance with government tran...

68 Micro Motion 7827 Digital Viscosity Meter Return Policy