Instrument Datasheet / Specification Sheet

Datasheets

Instrument Data Sheet is a document that contains Specification and information of an instrument device. It specifies general information of instrument such as tag number, service description, location (line number/equipment number), P&ID or drawing number of reference, process data, display/calibration range, material, performance details (such as accuracy, linearity – if applicable), Hazardous area classification and It's certification (for electrical device), accessories required, etc.

The details of information in data sheet may differ among each types of instrument such as Gauges, Transmitters, Switches and Control Valves.

To preparing the Instrument Datasheets we shall need the following

·         Latest revision of P&ID

·         Heat and Material Balance (if provided)

·         Instrument Index

·         Technical Specification of field Instruments

·         Vendor Catalogs

·         Piping and Valve Material Specifications

·         Line List

The purpose of instrument data sheet

When the data sheet completed, it is attached to requisition which to be sent to several vendors. Vendors will offer their quotation with various model and manufacturer among the offers. It is an instrument engineer responsibility to evaluate all quotation and determine which offer is technically acceptable.

Having been considered its technical and commercial aspects, the instrument is purchased. Following the purchase order, vendor will submit supporting document and drawing.  Based on vendor data, instrument data sheet may be updated to accommodate details to make the data sheet “as-built”.

Finally, data sheet along with its supporting vendor data are stored in library or document control and will be referred during construction, operation and maintenance.

The Datasheets are prepared for the following instrument items

·         Pressure Instruments

·         Temp. Instruments

·         Level Instruments

·         Flow Instruments

·         Analytical Instruments

·         Control Valves

·         Shutdown valves

·         Signal Converters

·         Cables

·         Junction Boxes

·         ESD/ASD Push Button Stations

Datasheets generally of excel format and will have title block to enter customer and project information, revisions etc.

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Course 3: PLC/SCADA programming/configuration
• Fundamentals of Relay based logics
• Interlocks and their importance
• Plant start-up and shut down sequences
• PLC Programming – various techniques
• PLC programming – Hands on projects
• PLC Supervision – HMI and SCADA
• SCADA/DCS concepts
• SCADA Operator interface facilities and development
• SCADA database creation and logging of data
• Trending and alarm handling
• Networking and OPC connectivity

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Course 2: Design and detailed engineering documentation for instrumentation and control projects

• Understanding and interpretation of PFD, UFD and P&ID
• Preparation of Instrumentation Design Basis document which includes the various engineering philosophies
• Understanding the various standards like ISA, ISO, API, NORSOK
• Preparation of Instrument Index, IO list, Loop index
• Preparation of Data sheets and specification documents for field and control room instrumentation
• Preparation of Cable and JB schedules
• Preparation of Block Logic Diagrams
• Preparation of Loop schematics, Junction box and marshalling termination drawings
• Preparation of Instrument hook up and installation drawings
• Understanding and preparing the Cable Block diagrams
• Instrumentation Material Take off estimation
• Live projects ( on going at the time of training )

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Industrial Instrumentation and Training

With our vast project engineering background, we do conduct scheduled training for fresh and experienced engineers on all aspects of instrumentation (Onshore and Offshore)

Course 1: Measurement and Controls

• Basics of Plant, Process and Controls
• Measurement & principles of various processes and Instruments
• Closed and Open loop controls
• Simple to complex PID loops
• Final control elements
• Communication Protocols and Networking techniques etc.

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Data Conversions and Preparing P&I D and Instrument Documents for existing Plants 

 OG Tech Engineering is fully capable of converting your existing and old P&ID drawing into new ones, as built, with the complete process and instrumentation database.

We will provide you with outputs as soft and hard copies which are compatible to your existing Auto CAD and MS Office software.

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Services

1. Detailed Engineering

OG Tech Engineering, use the latest software and tools to prepare the following Engineering/Designer deliverables for engineering, procurement, construction.

• Instrument & Control Design Basis
• Control Philosophy and Specifications
• Detailed Engineering and Specifications for PLC & DCS
• ESD and FGS system Philosophies and Specifications
• Technical Specifications for Instruments, Control Valves, Safety Relief Valves etc.
• Instrument Indexing
• Instrument Datasheets
• Sizing of Control Valves, Flow Elements, Safety Valves, etc.
• Instrument Bulk Material Take-off
• Cable Selection and Scheduling
• Instrument Loop Diagrams
• Cause & Effect Matrix
• Flow chart / Logic diagram
• Control Room Design including Panel, Console Layouts
• Cable Tray Layout and Conduit Routing
• Instrument Installation Hook-ups
• Review of Vendor Drawings and Documents
• TQs and TBEs
• Purchase requisitions
• As built preparation

All above documents and drawings are carried out to the ISA, ISO and API standards.

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