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1. DIGITAL AND
ANALOG
INDICATORSGUIDED BY CREATED BY
PROF ,PALAK GAJJAR Ketan nayak (140413117005)
harsh parmar (140413117006)
INSTRUMENTation and control

2. INDEX
Sr .NO TOPIC
1. INTRODUCTION
2. ANALOG INDICATORS
3. DIGITAL INDICATORS
4. APPLICATION OF INDICATORS

3. INTRODUCTION
• INDICATION is a way of Showing or
Expressing a State or Level of
Something.
• Now in Engineering there are Main Two
type of Indicators.
1. Analog Indicators
2. Digital Indicators

4. ANALOG INDICATORS
• An Instrument which Indicates Values by
the means of continuous scale within
which any value may be specified.
• Most of the Time a Pointer is used to
Indicate the Readings.

5. TYPES OF ANALOG INDICATORS
1. Fixed Scale Indicators:-
The type of the Indicators in which the
Scale Does not move with the Pointer.
2. Movable Scale Indicators
The Type of the Scale in which the Scale
Moves with the Change in the Input but
the Pointer Remains Constant.

6. Straight Uneven Scale Indicator
• This is a Fixed Scale Type of Indicator.
• Where there is no Movement of the Scale while
Deflection in the Pointer.
• This is used mainly in the Speedometers of Vehicle and
the Analog Power meter.

7. Circular Recorer with the Concentric
Indication
• The Recorder is a Device which
Stores the Data of any of the Output
given by an Instrument.
• These Type of the recorders Record
the data as well as Indicate the
Output in the Real Time.
• This Instrument is a Combination of
the Fixed Scale and Movable
Indicator because of its Recording
Capability

8. Multiple Scale Indicators
• When there is a Requirement of Measuring the Multiple
Outputs with a Single Scale the Multiple Scale Indicators
are Used.
• It is a Cost Effective as well as the Convenient way of the
Indication of More than One parameter.
• It is also a Part of the Fixed Scale Indicator.

9. Gauge Dial Type Indicator
• Gauge Dial Type of the
Indicator is the Most Familiar
and Most Dealed Indicator for
an Instrumentation Engineer.
• In this type of the Indicator is
Used in some of the Very
Vibrating Atmosphere.
• Because of the Added Glycerine
the Alignment of the Pointer
never gets Disturbed.

10. Inclined Manometer Type Indicator
• In the Inclined type of the
Manometer the Filled Liquid
Travels in the Inclined
Direction bacause of the
Pressure applied at Input.
• It is a Non Movable Scale
Type Indicator.
• The Liquid inside manometer
will Describe the amount of
the Pressure applied on it.

11. Rotating Disc Type Movable Scale
Indicator
• These type of the Indicator
are Mostly seen in the
Houses,Colleges,Hospitals,
Gyms and at Most of the
Place.
• This is the Movable Scale
Type of the Indicator.

12. Digital Indicators
• Digital indicators present the readout
in numerical form.
• Fewer mistakes are made in reading
a number than in solve an indication
on a scale.

14. • A speedometer is an analog indicator
for rate of speed where mileage
travelled is digitally shown on a
counter.
• A positive displacement meter
indicates total flow and generally
provide with a digital counter.

15. Application
PH meters
Oscilloscopes
Stroboscopes
Voltmeter
Thermometer & thermister.