Inst ToolsInst ToolsInst Tools
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Erection & Commissioning
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
Search
  • Books
  • Software
  • Projects
  • Process
  • Tools
  • Basics
  • Formula
  • Power Plant
  • Root Cause Analysis
  • Electrical Basics
  • Animation
  • Standards
  • 4-20 mA Course
  • Siemens PLC Course
Reading: Two-Liquid Manometer Principle
Share
Notification Show More
Font ResizerAa
Inst ToolsInst Tools
Font ResizerAa
  • Courses
  • Design
  • PLC
  • Interview
  • Control System
Search
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Erection & Commissioning
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Inst Tools > Blog > Pressure Measurement > Two-Liquid Manometer Principle

Two-Liquid Manometer Principle

Last updated: March 11, 2019 10:45 am
Editorial Staff
Pressure Measurement
No Comments
Share
1 Min Read
SHARE

The two-liquid manometer is used to measure very small pressures. This is because a very small applied pressure, will produce a large liquid movement.

The basic arrangement is shown in figure. The manometer consists of two wells, each of the same large cross sectional area, connected by a U-Tube of much smaller cross sectional area.

Two-Liquid Manometer Principle

The U-Tube contains two liquids, one is more densed than the other.

The lower liquid, of density ρ2 is denser than the upper liquid, of density ρ1.

Points to note;

  • The two liquids should be non-mixing and the interface should be clearly visible.
  • The closer the densities of the liquids the more sensitive the manometer.

The scale is usually calibrated by the manufacturer in units of pressure, e.g. mmHg or Pascal, so that the pressure can be read directly from the device.

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 !

Continue Reading

Elastic Diaphragm Gauge Principle
Pressure Transmitters Heat-traced impulse lines
Pressure Gauges Zero Adjustment
Bellows
C-Bourdon Tube Pressure Gauge Theory
What is Hammer Effect in Gauges ?
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

Explore More

What is a Submersible Pressure Transmitter? Principle, Advantages
What are Pressure Sensing Lines? – Causes of Errors in Measurement
How Measurement Span of Pressure Gauge Could be Changed?
Commissioning a Differential Pressure Transmitter in a Pressurized Boiler Steam Drum
Types of Pressure – Instrument Questions and Answers
Effects of Symmetric and Asymmetric Capillary Tube Pressure Measurement
Components of Bourdon Tube – Questions and Answers
Closed Tank Remote Seal Capillary type DP Transmitter

Keep Learning

PLC Raw Count Calculation formula for Pressure Transmitter

PLC Raw Count Calculation for Pressure Transmitter

Uncertainty Calculations of Pressure Calibration

Uncertainty Calculations of Pressure Calibration

Metal Foil Strain Gauge Principle

Metal Foil Strain Gauge Principle

Differential Pressure Transmitter Question

Differential Pressure Transmitter Questions

Gauge Display Scale

How to Read Gauge Analog Scales

Pressure Transmitter Circuit

Pressure Transmitter Circuit

Pressure and Temperature Gauges

Pressure and Temperature Gauges

Differential Pressure Transmitters Static Pressure

What is Static Pressure Limit in DP Transmitter ?

Learn More

Coriolis flow meter sensor coils

Coriolis Flow Meter Construction

How Buoyant Force instruments Works

How Buoyant Force instruments Works ?

Delete Siemens CPU Memory

How to Delete the Siemens CPU Memory?

Automatic exhaust fan control

XG5000 PLC Programming for Automatic Exhaust Fan

4-20mA VFD Drive Formula

4-20mA Linear Conversion Calculation for VFD Drive (Formula)

Thermal Mass Flowmeter Principle

Thermal Mass Flow Meter – Principle, Advantages, Applications

Valve Technician Interview Questions

Valve Technician Interview Questions

Understanding RS-485 Communication

Understanding RS-485 Communication

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?