Inst ToolsInst ToolsInst Tools
  • Ask
  • Courses
  • Videos
  • Q & A
    • Interview
      • Instrumentation
      • Electronics
      • Electrical
      • Practical Questions
    • MCQ
      • Instrumentation MCQ
      • Electrical MCQ
      • Electronics MCQ
      • Control Systems MCQ
      • Analog Electronics MCQ
      • Digital Electronics MCQ
      • Power Electronics MCQ
      • Microprocessor MCQ
      • Multiple Choice Questions
  • EE
    • Electronics
      • Electronics Q & A
      • Electronic Basics
      • Electronic Devices & Circuits
      • Electronics Animation
      • Digital Electronics
    • Electrical
      • Electrical Basics
      • Electrical Q & A
      • Power Electronics
      • Electrical Machines
      • Electrical Animation
      • Power Systems
      • Switchgear & Protection
      • Transmission & Distribution
  • Measure
    • Control Valves
    • Calibration
    • Temperature
    • Pressure
    • Flow
    • Level
    • Analyzers
    • Switches
    • Vibration
    • Solenoid Valve
  • Control
    • PLC Tutorials
    • Control Systems
    • Safety Instrumented System (SIS)
    • Communication
    • Fire & Gas System
  • More
    • Design
    • Tools
    • Animation
    • Basics
    • Formulas
    • Standards
    • TextBooks
    • Common
    • Software
    • Excel Tools
    • Erection & Commissioning
    • Process Fundamentals
    • Videos
    • Books
Search
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Reading: Saybolt Viscometer
Share
Notification Show More
Font ResizerAa
Inst ToolsInst Tools
Font ResizerAa
  • Courses
  • PLC Tutorials
  • Control Systems
Search
  • Ask
  • Courses
  • Videos
  • Q & A
    • Interview
    • MCQ
  • EE
    • Electronics
    • Electrical
  • Measure
    • Control Valves
    • Calibration
    • Temperature
    • Pressure
    • Flow
    • Level
    • Analyzers
    • Switches
    • Vibration
    • Solenoid Valve
  • Control
    • PLC Tutorials
    • Control Systems
    • Safety Instrumented System (SIS)
    • Communication
    • Fire & Gas System
  • More
    • Design
    • Tools
    • Animation
    • Basics
    • Formulas
    • Standards
    • TextBooks
    • Common
    • Software
    • Excel Tools
    • Erection & Commissioning
    • Process Fundamentals
    • Videos
    • Books
Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Inst Tools > Blog > Common > Saybolt Viscometer

Saybolt Viscometer

Last updated: December 22, 2018 11:34 am
Editorial Staff
Common
No Comments
Share
4 Min Read
SHARE

SAYBOLT VISCOMETER

A device used to measure the viscosity of a fluid. The saybolt viscometer controls the heat of the fluid and the viscosity is the time is takes the fluid to fill a 60cc container.

The device used for measurement of viscosity is known as viscometer .

  • The viscosity of a fluid is a measure of its resistance to gradual deformation by shear stress or tensile stress.
  • The units of viscosity is poise and centipoise .
  • specific viscosity is the ratio of the viscosity of fluid to the viscosity of water at 20 degree Celsius. Since the water has a viscosity of 1 cp at 20 degree Celsius.
  • Kinematic viscosity is defined as ratio of dynamic viscosity to the density of the fluid.

Saybolt Viscometer

 Efflux cup viscometers are most commonly used for fieldwork to measure the viscosity of oils, syrups, varnish, paints and Bitumen emulsions. The testing procedure is quite similar to the capillary-tube viscometers where efflux time of a specified volume of fluid is measured through fixed orifice at the bottom of a cup to represent the viscosity of the fluid. Since the viscosity of Newtonian liquid are independent of dimensions of viscometer used, it is possible to convert the efflux times to kinematic viscosities by conversion charts or by formulas suggested by the equipment manufacturers.

To obtain high accuracy the liquid holding vessel and orifice are temperature controlled by immersing them in a thermostatically controlled bath. The saybolt viscometer, one of the efflux cup viscometers is the standard instrument for testing petroleum products. There are three types of orifices available-Universal, Furol, Asphalt.

The furol and asphalt orifices, respectively, have an efflux time of approximately, one-tenth and one-hundredth that of the universal orifice. The cup orifice combination should be selected to provide an effllux time within the range of 20 to 100 seconds. Of these types, the universal orifice(saybolt universal viscometer) is most commonly used and its efflux time is designated as saybolt universal seconds(SUS).The universal viscometer measures the time required for 60 cc of sample fluid to flow out through an orifice having dimensions of 0.176 cm in diameter and 1.225 cm in length. Saybolt universal seconds (t) can be converted to kinematic viscosity (v) by the following equations:

When t < 100 secs, v = 0.226t – 195/t Centistokes
When t >100 secs, v = 0.220t – 135/t Centistokes

The viscosity determinations should be conducted in a room free from drafts and rapid changes in temperature the highest degree of accuracy.

Advantages

  • It has a digital meter to measure temperature and so reading is more accurate and precise.
  • The coils wrap around the container uniformly so uniform temperature can be obtained.
  • Viscosity can be directly compared for two or more liquids.

Disadvantages

  • The main disadvantage of the capillary tube viscometer is the errors that arise due to the variation in the head loss and other parameters.
  • Efflux cup viscometer have some inherent inaccuracies

Application

  • Efflux viscometer are most commonly used fieldwork to measure the viscosity of oil , syrups, varnish, paints.
  • It is used for testing petroleum products.
Don't Miss Our Updates
Be the first to get exclusive content straight to your email.
We promise not to spam you. You can unsubscribe at any time.
Invalid email address
You've successfully subscribed !
Ultrasonic Testing (UT) : Principle, Advantages, Disadvantages
Conveyor : Belt, Screw, Pneumatic, Hydraulic, Roller, Chain, Bucket, Vibratory
Information Technology and Operation Technology in Industrial Automation
Steps Followed Before Creating CNC Program
HVAC Questions & Answers
Share This Article
Facebook Whatsapp Whatsapp LinkedIn Copy Link
Share
Leave a Comment

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Stay Connected

128.3kFollowersLike
69.1kFollowersFollow
208kSubscribersSubscribe
38kFollowersFollow

Categories

Recent Comments

  • Guifty Shimica on Top Non-PLC Certification Courses for Automation Professionals
  • Guifty Shimica on Top Non-PLC Certification Courses for Automation Professionals
  • MIHARITSOA Aina Sitraka on Top Non-PLC Certification Courses for Automation Professionals
  • Vaishnavi on Free Instrumentation Course for Trainee Engineers

Related Articles

Metric Prefixes and Unit Conversions

Metric Prefixes and Unit Conversions

Dew Point in Instrument Air

Dew Point in Instrument Air

UX Design

How to Achieve Sustainability in UX Design and Make a Difference?

Common Materials used in Instrumentation Cables

Common Materials used in Instrumentation Cables

Good and Bad Wiring Practices

Industrial Automation Sales and Marketing Tools

Industrial Automation Sales and Marketing Tools

FPGA vs. CPLD - What are the differences between them

FPGA vs. CPLD – What are the differences between them

What can you do with an Engineering Degree

What Can You Do with an Engineering Degree?

More Articles

Robot Anatomy

Robot – Anatomy, Configuration, Reference Frame, Characteristics

PLC and MCC Panel Interface Design

PLC Panel and MCC Panel Interface Signals

Internal Parts of Globe Valve

How to Choose a Control Valve?

Pressure Safety Valves Functional Testing

Pressure Safety Valves Functional Testing

Power Systems Questions & Answers

Power Systems MCQ Series 7

Why CT Secondary Should Never Be Kept Open?

Why CT Secondary Should Never Be Kept Open?

Chromatography Questions & Answers

Gas Chromatography Questions & Answers

Power Electronics Objective Questions

AC Voltage Controllers Multiple Choice Questions

Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Welcome Back!

Sign in to your account

Username or Email Address
Password

Lost your password?