3.4 RecorderAmira Kormain

Amirah Nadia Mat Lias

Nor Masliyah Harun

Nur Farahin Anuar

Nurul Syahirah Dzulkifli

NurulFarhana Mat Amin

Introduction A data/chart recorder is an electronic instrument that

keeps track of various measurements required in industrial and laboratory environments.

It is used to record: process measurements for such variables as

temperature, pressure, flow, pH, and humidity scientific and engineering data for applications such as

testing and diagnostics, statistical analysis, and other laboratory work that requires a

graphic or digital record of variables

Type of Recorde

r

Strip Chart

Recorder

XY recorder

hybrid recorder

circular chat

recorder

paperless

Circular Chart Recorders

A circular chart recorder records data in a circular format. The paper is spun beneath one or more pens. The pens are deflected in proportion to the varying signal resulting in a circular chart.

Circular chart recorders are ideal for batch processes where a set process time is known.

The charts are normally designed to rotate in standard time periods, such as 1 hour, 24 hours, 7 days, etc., although many recorders are flexible enough to accommodate non-standard time periods.

Diagram

A circular chart recorder tracking temperature in a building

Diagram

Schematic diagram of a circular chart recorder

Strip Chart Recorders Strip chart recorders consist of a roll or strip of

paper that passes linearly beneath one or more pens. As the signal changes, each pen’s deflection records the process being measured in the form of a chart.

Well suited to recording of continuous processescommonly used in both laboratory and process-

measurement applications.

XY Recorders XY recorders accept two inputs and create a chart or graph of one input

versus the other. They are commonly used to determine the relationship between the two inputs.

For example in a chemical process, an XY recorder might be used to monitor the effect temperature has on the pressure of the process.

Hybrid RecordersA hybrid recorder can function as a recorder or data

logger. Like a standard recorder the hybrid recorder can generate a chart of the inputs.

However, it can also produce a digital stamp of the data similar to a data logger.

Commonly available in multichannel designs although one print head normally handles all channels.

This makes the hybrid recorder a cost effective solution for multichannel systems although the response time is not as fast as recorders which have a unique pen for each channel.

Paperless RecordersPaperless recorders are one of the latest types

of recorders to emerge on the market.Paperless recorders display the chart on the

recorders' graphic display rather than print the chart on paper.

The data can normally be recorded in internal memory or to a memory card for later transfer to a computer.

BARDON TEMPERATURE/PRESSURE RECORDER

TEMPERATURE ELEMENT It senses temperature changes by using the thermal

expansion principle Temperature changes cause thermal expansion and

contraction of mercury in the bulb When heated mercury expands, it increases an volume,

causing the bourdon tube to exert mechanical force. The bourdon tube movement is transmitted through

mechanical linkage to a recording pen

STATIC PRESSURE ELEMENT Introduced through the tubing into the static pressure element

causes the element to unwind Conversely, a reduction of pressure within the tubing causes the

element to wind up more tightly This motion is transmitted through the lever arm assembly and its

intermediate linkage to the pen shaft, which controls the movement of the recorder pen

The pen transcribes the motion onto a rotating chart to permanently record changes in static pressure

AdvantagesType Advantages

Circular Chart Flexible standard time

Strip Chart Easy to referXY Record two

inputs at a timeHybrid cost effectivePaperless conservation of

paper and easy transfer to a computer.

APPLICATIONS

Telephone Record the conversations of others, whether they occur

in person or over the telephone. Cameras Taking photos or making audio or video recordings. In Class used to record a lecture, presentation, or similar activity Microphone to convert the sound into an electrical signal that was

amplified and used to actuate the recording stylus.

These device are ideal for high-performance applications requiring accuracy such as those used in :textile and food machineryindustrial ovensenvironmental chamberspharmaceutical equipmentMetalworkingindustrial furnacesfarm machinery

Radio Industry pre-record many sections of program content such as advertising. enabled the creation and duplication of complex, high-fidelity,

long-duration recordings of entire programs

Computer There are many different digital audio recording and processing

programs running under several computer operating systems for all purposes, from professional through serious amateur to casual user.

system designed solely or primarily for recording, editing and playing back digital audio

Drug storage rooms, cold rooms, stability chambers, etc.

Tire and Rubber ProcessingHydro-testing / PipingWater and Waste Water TreatmentBreweries, distilleries, and sugar

processingCold storages, beverage / food processingHumidity ChambersTesting of valves

REFERENCES

http://en.wikipedia.org/wiki/Chart_recorder http://www.omega.com/temperature/pdf/Chart_Recorders

_101.pdf https://www.honeywellprocess.com/en-US/explore/

products/instrumentation/recorders-and-data-acquisition/circular-chart-recorders/Pages/default.aspx