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: Transmitter Detailed Specifications
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 > Instrumentation Design > Transmitter Detailed Specifications

Transmitter Detailed Specifications

Last updated: March 28, 2022 11:19 am
Editorial Staff
Instrumentation Design
2 Comments
Share
4 Min Read
SHARE

Here we shall see detailed specifications of Transmitters used for Level, Pressure, Flow, DP applications.

Contents
Transmitter SpecificationsExample Specifications

Transmitter Specifications

Transmitter Detailed Specifications

Transmitter used for flow, pressure, level, and DP applications are generally 2 wire 4-20 mA type depending on application and existing plan control system compatibility.

Sometimes foundation Fieldbus and Profibus protocols are also used for various applications.

Generally, transmitters should have the following features.

  • Transmitters should be SMART type
  • 2 wire 4-20 milliampere signal to be used
  • Should support HART protocol

Generally, transmitters shall be

  • Certified Ex-proof and for intrinsic safe applications Ex ia/ib rated
  • Die-cast Aluminium housing
  • Compatible with Direct mount or remote mounting accessories

Wetted part material normally is SS 316, as a minimum depending on process suitability. 125-150% of over-range protection is generally required.

Both coplanar and in-line transmitters are to be used for different applications.

External zero adjustment and internal vent/drain provision required.

Transmitter capable of measuring gauge / absolute pressure

The transmitter should be field configurable and should support multiple units of measurement.

Microprocessor-based control chip inside transmitter required with non-volatile memory to store configuration.

Signal conversion should be carried out in the transmitter itself and the design of the electronics should comply with Electromagnetic Compatibility requirements as per IEC 60801.

It should be capable of self-diagnosis and in event of failure, it should retain the fail safe value of output.

Built-in temperature sensors shall be provided for temperature compensation wherever required.

Instrument connection on Transmitter should generally be ½” NPT.

Various types of certifications should be available to choose from depending on the region it is to be used for example the USA or Europe.

Transmitter accuracy should be +/- 0.1% minimum but it is not possible for every case for example orifice meters do not provide that much accuracy because of the complexity of the measurement mechanism but the transmitter selected should have min +/- 0.1% accuracy.

Normally transmitter is calibrated in a way that it should read process LRV at about 25% of its measurement span and it should read URV at about 80%.

The transmitter should have internal transient protection inbuilt.

The transmitter shall support the latest version of the HART protocol. It shall also support multiple alarm level signal transmission. Typically these signals are superimposed over a 4-20 mA signal.

Transmitters for anti-surge control loops are non-smart type and flameproof unless specified otherwise.

A special smooth surface finish is required for sanitary services.

Generally, process connection for pressure and differential pressure transmitter shall be ½” NPTF and flanged for diaphragm seal type. Diaphragm seal element is used for corrosive and highly viscous services at high operating temperatures.

Capillary material SS 316 as a minimum, shall have SS 304 armoring with PVC cover, and for minimum measurement lag, proper ID should be selected.

Transmitter shall be installed with 2/3/5 valve manifold wherever it needs frequent removing of the transmitter for maintenance purposes.

Here a snapshot from the brochure of one of the vendors of Transmitters is given for reference.

Example Specifications

Transmitter Specifications

Interest to add any further points? Share with us through below comments section.

Author: Kalpit Patel

Read Next:

  • Flowmeter Control Strategy
  • What is Averaging Pitot Tube?
  • Basics of Venturi Flow Meter
  • Differential Pressure Flowmeter
  • Flow Transmitter Square-Root
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

Instrument Numbering Philosophy
Orifice Flow Meters: Detailed Specifications
Control Room Design Guidelines
Types of Cable Trays – Purpose, Advantages, Disadvantages
Tagging Philosophy for Junction Box, Cable, and Cable Drum
Basics of Fail-safe Circuits
Share This Article
Facebook Whatsapp Whatsapp LinkedIn Copy Link
Share
2 Comments
  • Isaac Nyame says:
    June 28, 2020 at 10:07 pm

    Interesting, you people are doing very well

    Reply
    • Mr. Shah says:
      June 10, 2024 at 12:51 pm

      Thank you

      Reply

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

5 Most Common Mistakes When Specifying Valves
Location of Measurement Displays
Types of Cables, Purpose, Advantages, Disadvantages, Applications
Instrumentation Cable trays Installation in vertical orientation
Response Time Test of RTD and Thermocouple
List of Instrumentation Project Engineering Documents
Top 5 Things for selecting a Solenoid Valve
Control Valve Recommended Practices for Harsh Process Conditions

Keep Learning

pressure switch control two lamps wiring

Draw Wiring of a Pressure Switch to control two lamps

Instruments Tapping Points

Instruments Tapping Points – Common versus Individual

Voting System in PLC

Voting Concept in Package Safety System

Control Valve Packing

Control Valve Packing

heated instrument enclosures

What is Instrument Heated Enclosure or Protection Box?

Pull-up switch circuit.

Pull Up and Pull Down Switch Circuits

Thermowell Immersion Length

Thermowell Insertion and Immersion Length

Air Consumption Calculation for Control Valves

Air Consumption Calculation for ON/OFF Valves

Learn More

Bucket Steam Trap

Bucket Steam Trap

PLC Multiple Choice Questions

PLC Multiple Choice Questions

Pressure Reducing and Desuperheating Station (PRDS)

Pressure Reducing and DeSuperheating Station (PRDS)

AC generator Voltage Regulators

AC Generator Voltage Regulators

Reactor Top lid lapped

Urea Reactor Top Bolted Plug developed Leaks

Float level gauge Principle

Float Type Level Indicator Principle

4-20mA Transmitters Easy Calculations

4-20mA Transmitters Calculations

Instrumentation Project Documents

List of Instrumentation Project Engineering Documents

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?