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
  • Request
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
  • Request
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

Capillary Tubing Pressure Sensor Temperature & Elevation Problems
Bourdon Tube Pressure Gauge
Scaling Sensor Output to Engineering Units
Instrument Protection Methods: Seals
What is Static Pressure Limit in DP Transmitter ?
Closed Tank Remote Seal Capillary type DP Transmitter
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
210kSubscribersSubscribe
38kFollowersFollow

Categories

Explore More

Pressure Transmitters Filled impulse lines
Pressure Transmitter Preventive Maintenance
Pressure Gauge Accessories Questions and Answers
Bourdon Tube Pressure Gauge Advantages and Disadvantages
Problem on Water Filter Discharge Pressure Transmitter and Gauge
Pressure Sensor Specifications
Pressure Gauges Zero Adjustment
Pressure Gauge Cocks

Keep Learning

Semi Conductor or Piezo Resistive Strain Gauge Principle

Semi Conductor or Piezo Resistive Strain Gauge Principle

Absolute and Gauge Pressure

Difference Between Absolute and Gauge Pressure

Pressure gauge mechanism

How Measurement Span of Pressure Gauge Could be Changed?

Direct Mounting of Diaphragm Seals Level Transmitter

What are the Mounting Techniques of Diaphragm Seals?

Differential Pressure Gauge Principle

Differential Pressure Gauge Principle

Gauge Display Scale

How to Read Gauge Analog Scales

What are Pressure Sensing Lines

What are Pressure Sensing Lines? – Causes of Errors in Measurement

Strain Gauge Pressure Sensor Principle

Strain Gauge Pressure Sensor Principle

Learn More

Electrical Machines Objective Questions

Electrical Machines MCQ Series 6

Electrical Machines Questions and Answers

Synchronous Machines EMF Questions

Troubleshooting Ultrasonic Flow Meter Common Problems

Troubleshooting Ultrasonic Flow Meter Common Problems

Open Platform Communication (OPC)

Open Platform Communication (OPC)

RTD with Thermowell

Temperature Sensor Accessories

Modbus ASCII and RTU Message Frame

Background of Modbus – ASCII and RTU Data Frames

Stop Check valve

What is Stop Check valve ?

Magnetostrictive instruments

Magnetostrictive Level Measurement

Menu

  • About
  • Privacy Policy
  • Copyright

Quick Links

  • Learn PLC
  • Helping Hand
  • Part Time Job

YouTube Subscribe

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?