Page 3 - Contents; Chapter 1
Installation and Configuration Manual i Contents Chapter 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 Safety guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 About the ...
Page 4 - Chapter 5
ii Micro Motion 7827 Digital Viscosity Meter Contents 4.7 Checking the installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Chapter 5 Using 7950/7951 Processing Electronics . . . . . . . . . . . . . . . . . . . . 39 5.1 Using the 7950 / 7951 Pro...
Page 7 - In; Safety guidelines; Handle the 7827 digital viscosity meter with great care.
Installation and Configuration Manual 1 In stall a ti on (Sh o rt Stem) E lectri cal Conn ecti ons Installation (Long Stem) In tr o ducti on Chapter 1 Introduction 1.1 Safety guidelines Handle the 7827 digital viscosity meter with great care. • Do not drop the meter. • Do not use liquids incompatibl...
Page 8 - Introduction; About the meter; The 7827 meter directly measures the following fluid properties:
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...
Page 9 - Some uses are in the oil and petrochemical industry for:; Principle of operation; Frequency
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...
Page 11 - Installa; Chapter 2; drawings. Contact Micro Motion for details.
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...
Page 12 - Boundary effects; long axis
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. ...
Page 13 - This next view shows other pipe outlines superimposed:; Top or Plan view; ” horizontal pipe
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 ...
Page 14 - Standard installations; Installation type
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...
Page 15 - Meter orientation; continued
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...
Page 16 - vertical; For; ALL; pipe and flow directions; the; meter; must be; horizontal
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...
Page 17 - The pocket geometry; Free stream installation - weldolet
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...
Page 18 - Swagelock fitting
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...
Page 19 - Flow-through chamber installation; “T” piece Flanged
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...
Page 20 - The fittings are certified to the following standards:; Installation in the pipeline or system
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...
Page 21 - Condition of fluid at the sensor; Fluid at the sensor
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...
Page 22 - Entrained gas
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,...
Page 23 - Typical installations
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...
Page 24 - Jacketed pipeline installation
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...
Page 25 - Pumped bypass; Horizontal Pipe line; Side Wall Tapping
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...
Page 27 - Chapter 3
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...
Page 28 - Installation considerations; Condition of fluid at the sensor.
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...
Page 29 - Vent any gas prior to the viscosity meter.; Solids contamination; Avoid sudden changes of velocity that may cause sedimentation.; Open-tank installation; Only the safe area model may be used in open-tank installation.
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 ...
Page 31 - Keeping tines away from objects and disturbed flow (open tank)
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 ...
Page 32 - Closed-tank installation
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...
Page 33 - Keeping away from tank wall (closed tank)
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...
Page 34 - Allowing for tank lid flexing (closed tank)
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 ...
Page 35 - Calibration
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 ...
Page 36 - insulate any flanges.
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.
Page 37 - Electrical Connections; Chapter 4; For installations in hazardous areas:
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 ...
Page 38 - Installation and safety in hazardous areas; The spigot must be locked into place.; Installation in non-hazardous areas; Open the Terminal Board side of the
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...
Page 40 - Overview; Screw the housing cap on fully and; Connectors used
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...
Page 41 - Connection diagrams; Klippon; PRT; Klippon; PRT
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 ...
Page 43 - Checking the installation
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 ...
Page 44 - Electrical checks
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...
Page 45 - libration C
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...
Page 47 - Cal; Chapter 6; Factory calibration; Hygienic units can be calibrated in a 3” hygienic bore if required.
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...
Page 48 - Calibration Check; Density; are derived from the air point and material properties.; Primary standards; Transfer standards
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...
Page 49 - Viscosity
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...
Page 50 - For unstable or high-pressure vapor liquids
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...
Page 51 - Density in-line calibration procedure; START; dD
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...
Page 52 - As a general guide, Table 6-1 shows the accuracy of the 7827 meter:; Error source; Error sources on indicated density; Error Source
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...
Page 53 - example; CALIBRATION CERTIFICATE
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 :...
Page 55 - tena; Chapter 7
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....
Page 56 - General Maintenance; Fault analysis
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...
Page 57 - Error on indicated density
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...
Page 58 - Checking the power consumption
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...
Page 60 - Installation checks
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...
Page 61 - Calcula; Appendix A; Viscosity equations
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...
Page 62 - Calculated Parameters; General viscosity equation; = meter calibration coefficients for each calibrated range; Density equations; ) is taken and used in a series; General density equation; = meter calibration coefficients; Temperature correction equation; = Meter calibration constants; Viscosity correction equation
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 ...
Page 63 - Pressure correction; Velocity Of Sound correction equation; – for
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...
Page 64 - Density scaling; Kinematic viscosity equation; = Fluid dynamic viscosity
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...
Page 65 - Safety Certification; Saf; Appendix B; Safety certification
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 ...
Page 67 - Appendix C; Density / temperature relationship of hydrocarbon products
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...
Page 68 - Product Data; Revised; Platinum resistance law; Refined products
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...
Page 69 - Density of ambient air; Temp
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 )...
Page 70 - Velocity of sound in liquids; Liquid
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...
Page 73 - Retu; Appendix D; General guidelines; , or by phoning the Micro Motion Customer Service department.; New and unused equipment
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...
Page 74 - Return Policy
68 Micro Motion 7827 Digital Viscosity Meter Return Policy
