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VCS - Viscomaster™

Troubleshooting

Viscosity measurement problems and recommended actions

Problem

Possible causes

Recommended actions

Viscosity reading

erratic

Normal process noise

Two-phase flow

Deposition or coating, especially

asphaltenes, on the tines

Contaminants in the process fluid

Vibration in the pipeline

Check your process conditions.

Check for two-phase flow,

stratification, or settling. Install a

pump. Check for environmental

conditions that produce stratification

(e.g., a heat source).

Increase back pressure to minimize

bubble formation.

Clean the tines.

Minimize vibration in the pipeline.

Viscosity reading

inaccurate

Incorrect calibration factors

Flow rate too low or too high

Bypass not fully closed

Deposition or coating, especially

asphaltenes, on the tines

Fork laminate damaged

Defective thermal insulation

Boundary effect

Verify the calibration factors. Ensure

that the viscosity ranges are

appropriate for your process fluid.

Adjust the flow rate or the diameter

of the flow-through chamber. Refer

to the installation manual for flow

requirements and best practices.

Ensure that the installation type

matches the calibration. Refer to the

installation manual.

Close the bypass.

Clean the tines.

Check for physical damage to the

tines or laminate.

Repair or replace the thermal

insulation.

Check the pump delivery and service

the pump as required.

Viscosity reading

NaN

(Not a Number)

Viscosity above the highest

calibration range or below the

lowest calibration range

Return the device to Aquametro Oil

& Marine for recalibration for the

ranges you need.

Referred viscosity

reading

inaccurate

Inaccurate line viscosity

measurement

Inaccurate line temperature

measurement

Incorrect referred viscosity

configuration

Inaccurate measurement of

laboratory sample

Ensure that line viscosity

measurement is as accurate as

possible.

Ensure that the temperature value

used in referred viscosity

measurement is as accurate as

possible.

Verify the configuration of referred

viscosity measurement.

Repeat the laboratory measurement,

ensuring that reference conditions

match.

Density measurement problems and recommended actions

Problem

Possible causes

Recommended actions

Erratic density

reading

Normal process noise

Two-phase flow

Flow rate too high

Deposition on the tines

Check your process conditions.

Increase the density damping value.

Reduce the flow rate.

Check for two-phase flow.

Содержание Viscomaster

Страница 1: ...Version VD 7 425 02 2021 Installation and Operation Manual Viscosity Control System Viscomaster Viscomaster Dynamic Fuel Viscosity System ...

Страница 2: ...0 3 3 3 Grounding 21 4 Viscomaster Operation 22 4 1 Putting into Operation 22 4 2 Check meter status 22 4 3 Configure Modbus communication 23 5 Maintenance and Repair 25 5 1 Calibration 25 5 2 Service maintenance 25 5 3 Spare Parts 27 6 Troubleshooting 28 7 Decommissioning Dismantling and Disposal 31 7 1 Decommissioning 31 7 2 Dismantling 31 7 3 Return of materials 31 7 4 Disposal 32 8 Technical D...

Страница 3: ...e plant and or ship All safety installation and operation instruction as described in this manual must be followed Sensors actuators and control valves are sensitive instruments and should be treated carefully When removing or reinstalling sensors or components from the Viscomaster System safety instructions in the respective operating manual must be followed Check the Viscosity Control System par...

Страница 4: ...cess and marine applications in viscosity control systems It is built for the use in fuel oil systems to achieve high accurate measurements and control of the fuel oil viscosity Rugged and reliable with very low maintenance the sensor provides fully integrated fit and forget viscosity measurement With available Retrofit kits for easy replacement of existing viscosity meter the greatest installatio...

Страница 5: ... existing Viscosity system or direct insertion Matched components for easy installation Scope of Supply Viscomaster HFVM B Viscosity Sensor Dynamic For viscosity and temperature measurements HFVM R Viscosity Sensor For viscosity and density measurements Standard Adapter In Line The In Line viscosity retrofit kit provides a simple direct replacement for existing meters and the installation solution...

Страница 6: ...r the DLC coated tines always fit the protective cover over the tines when the meter is not in use The tine coating is not resistant to impact damage Always store and transport the meter in its original packaging Do not use liquids that are incompatible with the materials of construction Do not expose the meter to excessive vibration greater than 0 5 g continuously Vibration levels in excess of 0 ...

Страница 7: ...ion proof flameproof meters 3 1 4 Other installation considerations Numerous external factors can affect the meter s successful operation To ensure that your system works correctly consider the factors covered in this section when designing your installation ...

Страница 8: ... Flow rates Maintain constant flow rates and velocities that are within the limits specified for the meter The fluid flow provides a steady heat flow into the meter installation and the flow rate influences the self cleaning of the meter tines the dissipation of bubbles and the solid contaminants around the meter If you install the meter in a bypass configuration such as in a flow through chamber ...

Страница 9: ... gradients in the fluid and in the piping and fittings immediately upstream and downstream of the meter Minimizing temperature gradients reduces the effect of viscosity changes Aquametro Oil Marine recommends using the following guidelines to reduce the thermal effects to your meter installation Always insulate the meter and surrounding pipework thoroughly Avoid insulating the transmitter housing ...

Страница 10: ...sponse Good flow and temperature conditioning Flow rate 1 10 to 330 l min 0 6 to 20 m3 hr 2 6 to 87 US gal min Viscosity Up to 100 cSt Temperature 50 C to 200 C 58 F to 392 F Main flow pipe size 50 mm 2 in Flow through chamber Placement Tines are contained in a flow through chamber where fluid is circulated from the main flow Adaptable installation to any diameter main pipe and for tank applicatio...

Страница 11: ...al min Viscosity Up to 100 cSt Temperature 50 C to 200 C 58 F to 392 F Main flow pipe size Defined by capillary meter chamber Direct Insertion Placement The fork should be fully inserted into the main flow path up to the weld bead The AM Viscomaster is not calibrated for direct insertion Flow rate Velocity 1 5ft sec 0 5m s Viscosity Up to 100cSt Temperature 50 C to 200 C 58 F to 392 F Main Flow Pi...

Страница 12: ... wiring and power up the meter Remove the back transmitter housing cover to access the PWR terminals 4 If you have an HFVM with calibration code B viscosity and density calibration perform a Known Density Verification KDV check Use the Known Density Verification procedure to match the current meter calibration with the factory calibration If the meter passes the test then it has not drifted or cha...

Страница 13: ... available with either of the following Welded ends or compression fittings that connect into the process pipelines 1 inch 2 inch or 3 inch inlet and outlet pipes IMPORTANT Do not alter the length of the inlet and outlet pipes Pipe alterations can adversely affect the fitting temperature response and stability Prerequisites Verify the following conditions Flow 5 40 l min for 2 inch Schedule 40 cal...

Страница 14: ...odate larger versions Usually no pipework changes are necessary CAUTION Observe all corporate and government safety regulations Wear protective clothing safety glasses and gloves to prevent burns and the absorption of hot oil Prerequisites Verify the following conditions Temperature 50 C to 200 C 58 F to 392 F Flow 40 to 330 l min 2 5 to 20 m3 hr 11 to 87 US gal min Viscosity Up to 100 cSt Pressur...

Страница 15: ...ken and the sensor is obviously loose in the fitting NOTE If the system is still pressurized you will be able to lift and hold the meter against the retaining nut Rocking and alternately pushing the sensor in and out of the pocket within the limits allowed by the slackened nut breaks the seal and allows oil under pressure to seep past the lock nut If this leakage is excessive re tighten the lock n...

Страница 16: ...rize the system 4 Slacken the lock nut 1 to 2 turns so that you can rock the sensor If necessary use your hand to jolt the meter loose from the amplifier housing This breaks the seal between the sensor and the chamber retrofit kit Do not slacken the lock nut further unless the seal is broken and the sensor is obviously loose in the fitting NOTE If the system is still pressurized you will be able t...

Страница 17: ...ct insertion retrofit is not recommendable due to severe restrictions about the flow rate and calibration boundaries For Direct Insertion Aquametro Oil Marine does not take any responsibility for accuracy and lifetime For direct insertion no adapter is available ...

Страница 18: ... loosen the cap screw that holds the transmitter in place 2 Rotate the transmitter clockwise to the desired orientation up to 90 3 Secure the cap screw in place and tighten to 60 lb in 6 8 N m 3 2 4 Rotate the display on the transmitter optional The display on the transmitter electronics module can be rotated 90 or 180 from the original position ...

Страница 19: ... is snug 10 If appropriate power up the meter 3 3 Wiring Topics covered in this chapter Terminals and wiring requirements Wire power and outputs in a HART single loop environment Wiring to external devices HART multidrop 3 3 1 Terminals and wiring requirements Three pairs of wiring terminals are available for transmitter outputs A fourth pair is used for power wiring These outputs vary depending o...

Страница 20: ... device and Modbus Environment CAUTION Meter installation and wiring should be performed by suitably trained personnel only in accordance with the applicable code of practice Procedure Wire to the appropriate power and output terminals and pins see Figure 3 2 ...

Страница 21: ...ndards Prerequisites Aquametro Oil Marine suggests the following guides for grounding practices In Europe EN 60079 14 is applicable to most installations in particular Sections 12 2 2 3 and 12 2 2 4 In the U S A and Canada ISA 12 06 01 Part 1 provides examples with associated applications and requirements For IECEx installations IEC 60079 14 is applicable If no external standards are applicable fo...

Страница 22: ...his period Alert 009 is active The diagnostic routines should complete in approximately 30 seconds Post requisites Although the sensor is ready to receive process fluid shortly after power up the electronics can take up to 10 minutes to reach thermal equilibrium Therefore if this is the initial startup or if power has been off long enough to allow components to reach ambient temperature allow the ...

Страница 23: ...condition affects measurement accuracy and output behavior Resolve the alert condition before continuing 4 3 Configure Modbus communication Overview Modbus communications parameters control Modbus communications with the transmitter Modbus support is implemented on the RS 485 physical layer via the RS 485 terminals IMPORTANT Your device automatically accepts all connection requests within the foll...

Страница 24: ...antissa 3 4 MMMMMMMM M Mantissa 4 Optional Set Additional Communications Response Delay in delay units A delay unit is 2 3 of the time required to transmit one character as calculated for the port currently in use and the character transmission parameters Additional Communications Response Delay is used to synchronize Modbus communications with hosts that operate at a slower speed than the device ...

Страница 25: ...otective equipment WARNING The device system may be under pressure Risk of severe injury Carry out work only on non pressurized devices systems When working on the device system watch out for leaking medium Work may only be performed by authorized specialists in accordance with the applicable regulations Use appropriate protective equipment particularly safety goggles WARNING The device system may...

Страница 26: ...ng instructions listed above Check connections periodically for tightness and if necessary retighten Check insulation periodically for completeness and functionality and reattach if necessary Steam valve spindle has to be kept clean and lubricated if necessary lubricate the spindle with Molykote including grease Following the initial temperature and pressure load retighten the screws of all flange...

Страница 27: ...5 3 Spare Parts Use of wrong Spare Parts Risk of malfunction or damage Use only original spare parts supplied by Aquametro Oil Marine Spare part list and Maintenance instruction may be requested from Aquametro Oil Marine ...

Страница 28: ...e that the installation type matches the calibration Refer to the installation manual Close the bypass Clean the tines Check for physical damage to the tines or laminate Repair or replace the thermal insulation Check the pump delivery and service the pump as required Viscosity reading NaN Not a Number Viscosity above the highest calibration range or below the lowest calibration range Return the de...

Страница 29: ...in the pipework or fittings Two phase flow Check for two phase flow Cyclic inaccuracy in density reading Stirrer rotation rate too high Tank flow rate too high Fork in poor location Stirrer creating bubbles Solids in tank Reduce the stirrer rotation rate Reduce the tank flow rate Move the fork to a location with a lower flow profile Install a sample bypass Replace the device with a CDM Density rea...

Страница 30: ...d by the device Verify the receiving device and the wiring between the transmitter and the receiving device Check the settings of Upper Range Value and Lower Range Value Constant mA output Incorrect process variable assigned to the output Fault condition exists mA output below 3 6 mA or above 21 0 ma Incorrect process variable or units assigned to output Fault condition if Fault Action is set to U...

Страница 31: ...Dismantling Not required 7 3 Return of materials Never send a device system back if you are not absolutely certain that all traces of hazardous substances have been removed e g substances which have penetrated crevices or diffused through plastic Costs incurred for waste disposal and injury burns etc due to inadequate declaration and or cleaning will be charged to the delivering company or the ope...

Страница 32: ...ain flow recessed by 25 4 mm 1 in Process connection 1 1 2 inch Cone Seat Compression fitting 316 316L Cable duct NPT Operating Range Viscosity Up to 100 cSt Density Up to 3000 kg m Temperature 50 C to 200 C Ambient temperature 40 60 C Electronics Flow rate 10 to 330 l min Max Pressure 207bar Electrical Supply range 24VDC Power consumption 0 65 W typical 1 1 W maximum Output 2x 4 20mA Signal RS 48...

Страница 33: ...VCS Viscomaster 33 8 2 Dimensional drawings Detailed dimensional drawing is made in project drawings ...

Страница 34: ...34 VCS Viscomaster 8 3 Electrical Connection diagrams Detailed connection diagram is made in project drawings For connection with active power supply via controller sensor passive ...

Страница 35: ...VCS Viscomaster 35 ...

Страница 36: ...36 VCS Viscomaster ...

Страница 37: ...VCS Viscomaster 37 For connection with external power supply controller and sensor passive ...

Страница 38: ...38 VCS Viscomaster ...

Страница 39: ...VCS Viscomaster 39 ...

Страница 40: ...ter display The transmitter has two optical switches Scroll and Select To activate an optical switch block the light by holding your thumb or finger in front of the opening TIP You can activate the optical switch through the lens Do not remove the transmitter housing cover The optical switch indicator lights up when the transmitter senses that an optical switch has been activated Optical switch in...

Страница 41: ...il the correct digit is displayed then activate Select b Repeat this process for the second third and fourth digits TIP If you do not know the correct value for Off Line Password wait 30 seconds The password screen will time out automatically and you will be returned to the previous screen 3 Use the Scroll and Select optical switches to navigate to your destination in the display menu system Use S...

Страница 42: ...te Select to move to the next display variable 9 2 2 View and acknowledge status alerts The transmitter posts status alerts whenever a process variable exceeds its defined limits or the transmitter detects a fault condition You can view active alerts and you can acknowledge alerts Acknowledging alerts is not required View and acknowledge alerts using the display You can view a list containing all ...

Страница 43: ...ll other alerts If the alert is inactive when it is acknowledged it will be removed from the list If the alert is active when it is acknowledged it will be removed from the list when the alert condition clears Table 5 1 Status alerts and Status Alert Severity Alert number Alert title Default severity User can reset severity A001 EEPROM Error Fault No A002 RAM Error Fault No A003 No Sensor Response...

Страница 44: ...rmational To Informational or Ignore only A101 mA Output 1 Fixed Informational To Informational or Ignore only A102 Drive Overrange Informational Yes A104 Calibration in Progress Informational To Informational or Ignore only A105 Two Phase Flow Informational Yes A106 Burst Mode Enabled Informational To Informational or Ignore only A107 Power Reset Occurred Informational Yes A113 mA Output 2 Satura...

Страница 45: ...lay variables or to show a single display variable until the operator activates Scroll When you set automatic scrolling you can also configure the length of time each display variable is displayed o Procedure Enable or disable Auto Scroll as desired Display OFF LINE MAINT OFF LINE CONFG DISPLAY AUTO SCRLL Enable or disable the Acknowledge All Alerts display command o Overview You can configure whe...

Страница 46: ...ut 1 Source AO 2 mA Output 2 AO 2 SRC mA Output 2 Source DRIVE Drive Gain Q FCTOR Quality factor RANG Range Language Codes FREN French GER German ENGL English SPAN Spanish ABORT Abort ACCPT Accept ACK Acknowledge ACK ALL Acknowledge all ACTIV Active ALARM Alert ALL All APPLY Apply AUTO Auto AUTOSCRL Auto Scroll AVG Average DISBL Disabled DISPLAY Display DSPLY Display ENABL Enabled ENTER Enter EXIT...

Страница 47: ...VCS Viscomaster 47 ...

Страница 48: ...H 4106 Therwil Switzerland DE 18119 Rostock Germany info aquametro oil marine com info aquametro oil marine com www aquametro oil marine com Phone 41 61 725 44 00 Phone 49 381 382 530 00 VD 7 425 e 02 2021 The English version shall prevail Subject to change without notice ...

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