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: DP Transmitter Calibration Errors
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 > Practical Questions > DP Transmitter Calibration Errors

DP Transmitter Calibration Errors

Last updated: June 6, 2018 9:51 am
Editorial Staff
Practical Questions
No Comments
Share
1 Min Read
SHARE

A “smart” DP transmitter with built-in square root characterization is used to measure flow through a pipe.

The orifice plate range is 0 to 150 inches WC at 0 to 480 gallons per minute:

DP transmitter Errors

Operations personnel have strong reason to believe that the actual flow rate through this pipe is 160 GPM, yet the DCS registers a flow rate of 182.4 GPM. Based on this information, determine the likely source of calibration error in this system. Also determine whether this transmitter has square-root characterization enabled or not.

Additionally, suggest a good “next step” to perform to either pinpoint the location of this problem or correct it.

Answer :

The calibration error lies either with the transmitter, the impulse lines (unequal fluid heights inside), or with the orifice plate itself. The transmitter does have square-root characterization enabled.

A good “next step” would be to block and equalize the transmitter manifold to check what its PV and AO parameters register with no applied differential pressure.

More DP Transmitter Questions

Flow Transmitter Readings mismatch with DCS
DP Transmitter Error Calculations
Smart DP Transmitter Flow Meter Calculations
Pitot Tube Flowmeter Calculations

 

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

Float-type Level Switch for Sensing Low Oil Level
Practical Process Control System Questions & Answers – 3
Paint Mixing System
Diagnosing Electric Motor Circuit
Identify Level Control Loop Tuning Problems
Example PLC Program
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

How Do You Connect the Differential Pressure Gauge at the Filter?
Questions on Pneumatic Transmitter and Repeater
Question on Analytical Controller
Three-valve Manifold on Remote Seal DP Transmitter
Calculate Density and Specific Gravity
Identify the Problem in the PLC Program
Solenoid Valves Questions & Answers – 2
Analytical Process Control Question

Keep Learning

Determine Resistance value of Resistors

Determine Resistance value of Resistors

Identify the Pressure Gauge Error

Identify the Pressure Gauge Error

Calculate LRV and URV for 4-20 mA Loop-powered DP Transmitter

Calculate LRV and URV for 4-20 mA Loop-powered DP Transmitter

liquid level Measurement

Hydrostatic Level Measurement – Temperature related Density Change Effects

Questions on Pneumatic Control Loop

Questions on Pneumatic Control Loop

PLC Motor Control Circuit

Motor Trip Logic using PLC Programming

Smart DP transmitter Formula

DP Transmitter Error Calculations

PLC Questions - 1

Sketch a Ladder Diagram for PLC to Energize the Lamp

Learn More

Types of Allen Bradley PLC

Types of Allen Bradley PLC

If Else Statement in SCL Language

If Else Statement in SCL Language

Simatic Prosave HMI

How to Backup and Restore from Simatic Prosave HMI?

thermocouple types

What is a Thermocouple ?

Centrifugal Compressor Start Permissive & Interlocks

Centrifugal Compressor Start Permissive and Interlocks

80+ PLC MCQ

80+ PLC MCQ Questions

How to Design a Motor Faceplate in Graphics - SCADA Tutorials

How to Design a Motor Faceplate in Graphics? – SCADA Tutorials

Types of Electrical Loads

Types of Electrical Loads

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?