Emerson Micro Motion 7829 Viscomaster Dynamic Manual operacional

Product Data Sheet

PS-001199, Rev. C

April 2013

Micro Motion®7829 Viscomaster Dynamic™

Viscosity Meter

Micro Motion®viscosity meters are built to tackle the most demanding

process and marine applications. Rugged and reliable direct insertion meters

with very low maintenance, they provide fully integrated “fit and forget”

viscosity measurement.

High accuracy viscosity measurement

• Multi-variable measurement of dynamic viscosity, kinematic viscosity,

and temperature

• Unique direct insertion design

• Integral-mount transmitter with analog and digital communications

Greatest installation flexibility

• Continuous, real-time measurement in various installation

configurations

• Retrofit kits available for easy replacement of existing viscosity meter

technologies

Superior reliability and safety

• Worldwide marine-approved design for aggressive environments

• Insensitive to vibration, temperature, and pressure variations

2Micro Motion 7829 Viscomaster Dynamic Viscosity Meter

Micro Motion®7829 Series Viscomaster Dynamic™Viscosity Meter

About the 7829 Viscomaster Dynamic

The Micro Motion®7829 Viscomaster Dynamic™is a

proven technology for the accurate, continuous real-

time measurement and control of liquid viscosity.

The 7829 Viscomaster Dynamic viscosity meter has

been designed for installation in fuel oil applications

that supply engines, turbines, and burners in on-

shore and off-shore applications.

As part of its unique and rugged design, the 7829

Viscomaster Dynamic viscosity meter directly

measures dynamic viscosity and temperature. The

meter is also programmable to output calculated

density and kinematic viscosity measurements. The

Viscomaster Dynamic can easily cope with a range

of fuels from heavy fuel oil (HFO) to marine gas oil

(MGO).

The Viscomaster Dynamic has worldwide marine-

industry approvals including Lloyds Register, GL,

DNV, ABS, and BV. For a complete list of marine

approvals, see “Marine approval classifications” on

page 7.

Advantages

• Fully integrated “fit and forget” digital viscosity

and temperature measurement for monitoring

and control

• Two 4–20 mA outputs of kinematic viscosity and

temperature

• Modbus/RS-485 communications output of all

parameters, including calculated density and

calculated kinematic viscosity at operating

temperature

• Continuous measurement

• No moving parts means virtually no

maintenance

• PFA-coated tines for asphaltene rich fuels

• Integral Class B PT100 temperature sensor

• Hazardous-area approved (ATEX and CSA)

• Insensitive to vibration

• Direct insertion meter suitable for high-line

pressure

• PC configuration tools for diagnostics and data

logging

Contents

Typical applications . . . . . . . . . . . . . . . . . . . . . . . . 3

Typical industries . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Principle of operation. . . . . . . . . . . . . . . . . . . . . . . 3

Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Temperature specification . . . . . . . . . . . . . . . . . . . 6

Pressure ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Hazardous area classifications . . . . . . . . . . . . . . . 7

Marine approval classifications . . . . . . . . . . . . . . . 7

General classifications . . . . . . . . . . . . . . . . . . . . . 7

Materials of construction . . . . . . . . . . . . . . . . . . . . 8

Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Ordering Information . . . . . . . . . . . . . . . . . . . . . . 11

Micro Motion 7829 Viscomaster Dynamic Viscosity Meter 3

Typical applications

• Heavy fuel oil (HFO) heater control to burners

and engines

• Lube oil viscosity control

Typical industries

•Marine

•Power

• Heavy fuel oil (HFO) blending and bunkering

Principle of operation

The 7829 Viscomaster Dynamic viscosity meter

uses vibrating fork technology to measure viscosity.

Viscosity is measured by detecting the bandwidth

around the fork’s natural vibration frequency.

The following figure illustrates how the 7829 meter

uses the frequencies at point A (the lower

–3 db point) and at point B (the upper –3 db point)

to digitally calculate bandwidth and quality factor.

Quality factor is then used to define fluid viscosity

using standard calibration techniques.

Product 1

Product 2

Response

amplitude

Frequency (Hz)

Product 1 – Low Viscosity

Product 2 – High Viscosity

Bandwidth = Point B – Point A

Resonant Frequency = (Point A + Point B) / 2

Quality Factor = Resonant Frequency / Bandwidth

4Micro Motion 7829 Viscomaster Dynamic Viscosity Meter

No Field Calibration Required

The 7829 Viscomaster Dynamic viscosity meter is

factory-calibrated and no field calibration is

required. The calibration is traceable to UK National

Standards through the Micro Motion onsite

accredited laboratory.

Integral Electronics for Signal Processing

A configured microprocessor-based electronic

module provides the full signal conditioning,

calculation, and diagnostic facilities within these

meters. The 7829 Viscomaster Dynamic does not

require remote electronics for signal processing.

This meter simultaneously measures real-time

viscosity and temperature. The integrally mounted

electronics can be configured to output a number of

user-defined parameters.

RS-485/Modbus Communications Interface

All measurements are available digitally through the

built-in RS-485/Modbus communications interface –

including calculated density and calculated

kinematic viscosity at operating temperature – for

integration into plant data systems. You can use the

ADView or ProLink II (v2.9 or later) software tools to

configure or diagnose a meter via the RS-485/

Modbus interface. See “ADView Software Tool

Features” and “ProLink II Software Tool Features”

for more information.

User-Configurable 4–20 mA Outputs

Two 4–20 mA outputs are available:

• mA output 1 is configurable to output

parameters such as dynamic or kinematic

viscosity.

• mA output 2 is set to output temperature, which

you can configure for zero and span.

Any of a range of output parameters can be used to

drive the two 4–20 mA outputs, enabling them to be

used as the process variable in control applications

without the need for additional processing

electronics.

Following are the default settings for the two

mA outputs.

Code

mA output 1 mA output 2

Viscosity (cSt) Temp (°C)

4 mA 20 mA 4 mA 20 mA

H0250150

J0500150

ZCustom

Features

The Viscomaster Dynamic offers features that are suited to specific applications and industry needs.

Process Requirement 7829 Viscomaster Dynamic

Dynamic viscosity 9

Kinematic viscosity 9

Temperature measurement 9

Integrated density output Calculated

Sensor type Fork

Mounting arrangement Bypass / Inline

Transmitter version 9

mA outputs Two 4–20 mA

(1 configurable / 1 fixed)

Measurable liquid types Heavy fuel oil

Principle markets Marine/Power

Micro Motion 7829 Viscomaster Dynamic Viscosity Meter 5

Low Maintenance Required

Because the 7829 Viscomaster Dynamic viscosity

meter has no moving parts, minimal maintenance is

required, leading to lower overall operating costs.

The vibrating forks are available with PFA coating to

assist self-cleaning. PFA is ideal for hydrocarbon

and fuel oil applications.

ADView Software Tool Features

ADView is a PC-based configuration and

diagnostics tool that runs on a Microsoft®Windows®

platform, communicates with the meter through a

standard serial port, and provides the following

functionality:

• Setting up a serial link to communicate with the

7829 transmitter

• Configuring the 7829 transmitter

• Displaying data real-time or as a graph

• Logging data to a file

• Verifying correct operation of the system and

diagnosing faults

ProLink II Software Tool Features

The ProLink II software tool (v2.9 or later) can be

used with the meter. ProLink II runs on a Microsoft

Windows platform, communicates with the meter

through a standard serial port or USB port, and

provides the following functionality:

• Configuring the 7829 transmitter

• Viewing and logging process parameters

• Viewing meter diagnostics

6Micro Motion 7829 Viscomaster Dynamic Viscosity Meter

Performance

Temperature specification

Integral temperature sensor

Pressure ratings

Viscosity Calibrated Range 0.5 to 50 cP

Viscosity Accuracy ±1% span (±0.2 cP up to 10 cP)

Viscosity Repeatability ±0.5% of reading

Process

Ambient

–40 °F to +392 °F (–40 °C to +200 °C)

–40 °F to +185 °F (–40 °C to +85 °C)

Technology 100 Ohms RTD (4 wire)

Accuracy PT100 BS1904 Class B, DIN 43760 Class B

Maximum operating pressure(1)

(1) Actual maximum operating pressures are limited by the process connection rating.

3000 psi (207 bar)

Test pressure Tested to 1.5 x the maximum operating pressure

PED compliance Outside the scope of European directive 97/23/EC on Pressure Equipment.

Micro Motion 7829 Viscomaster Dynamic Viscosity Meter 7

Hazardous area classifications

Marine approval classifications

General classifications

Electromagnetic compatibility

All versions conform to the latest international standards for EMC, and are compliant with

EN 61326/IEC 61326.

Environment

• Weather rating: IP66

ATEX

ATEX-approved: Certification for use in Europe ATEX II2G Ex d IIC, T4

CSA C-US

CSA-approved: Certification for use in Canada and USA Class I, Division 1 Groups C & D, T4

Marine Approval Country

American Bureau of Shipping USA

Lloyds London United Kingdom

Germanische Lloyd Germany

Det Norske Veritas Norway

Bureau Veritas France

RINA Italy

Nippo Kaiji Kyokai Japan

Russian Maritime Register of Shipping Russia

South Korean Register of Shipping South Korea

8Micro Motion 7829 Viscomaster Dynamic Viscosity Meter

Materials of construction

Weight

Electrical

Wetted parts 316L Stainless steel

Tine finish PFA laminated(1)

(1) PFA is applied only to the tines for its anti-stick properties not for corrosion protection.

Electronics enclosure Sand cast low copper alloy

Polyurethane paint finish

Weight 7.5 lb (3.4 kg) typical

Power supply requirement For transmitter

For mA outputs

20 to 28 VDC, 50 mA

22 mA per output

Outputs mA

Accuracy

Repeatability

Out-of-range

System alarm

Two externally powered 4–20 mA

±0.1% of reading, ±0.05% of full scale at 68 °F (20 °C)

±0.05% of full scale, over range –40 °F to +185 °F

(–40 °C to +85 °C)

3.9 or 20.8 mA on 4–20 mA

2 or 22 mA on 4–20 mA (Programmable alarm state)

Communications RS-485 (Modbus)

Electrical connection Screw terminal, cable entry to suit ½" NPT gland (20 mm adaptor available)

Micro Motion 7829 Viscomaster Dynamic Viscosity Meter 9

Dimensions

Dimensions in inches (mm)

4.9 (125.4)

5.5 (140)

∅4.3 (109)

Mounting to suit 1.5″Swagelok or

similar cone

1.2

(31)

1/2″NPT both sides

4.8 (121)

0.5

(12)

∅1.38 (35)

10 Micro Motion 7829 Viscomaster Dynamic Viscosity Meter

Installation

A variety of installation accessories are available for both inline and slipstream/bypass installations.

Additionally, retrofit adapter kits are available for easy replacement of other viscosity measurement

technologies. For more information on these installation accessories, see the Micro Motion®7829

Viscomaster®Series Accessories product data sheet available at www.micromotion.com.

Fuel heater control example

Most marine and land-based engine/burner applications use a fuel booster module to precondition the

heavy fuel oil (HFO) prior to injection. These modules usually consist of a number of supply pumps fed by

either HFO or MDO, a flow meter, in-line filters to remove the impurities, and a holding/mixing tank.

Following the supply section, the fuel is usually sent to booster pumps that increase the flow rate up to a

maximum of 20 m3/hr and then through a series of heat exchangers (liquid or electric) to change the product

viscosity for efficient combustion.

Following is a graphic that shows the different installation options for the 7829 Viscomaster Dynamic in a fuel

booster module.

Viscosity input

Viscosity output

Viscosity

output

Inline viscosity meter replacement

(VAF Viscosense retrofit)

Capillary viscosity meter

replacement (VAF Viscotherm or

Nakakita retrofit)

Micro Motion flow-through-chamber

installation

Alarms

Relays

Fuel oil heat exchanger

Fuel oil

Control valve

Heating fluid

To engine

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