Know The Different Types of Indicators and What They Are Used For

What Is An Analog Indicator and Types Of Weighing Indicators? Known as one of the first measuring tools used in precision engine building, Analog Indicators are commonly used to get the measurement of anything that involves the distance between two surfaces or small amounts of component travel. This includes crankshaft thrust and straightness, deck clearances, lifter travel and many more.

When using the Analog Indicator, fixed mounting and complete stability is required to get accurate results. Any movement made by the analog indicator while the measurement is being taken could result in the measurement being totally compromised. This explains why Analog Indicators are mostly used with an adjustable magnetic base that can be clamped securely to a close by surface. The Analog Indicator can read and travel in both directions depending on how the operator positions them. It is highly advisable to zero the indicator prior to every measurement by rotating the outer dial to position the zero mark directly opposite to the needle- regardless of where it is pointing. Once it is zeroed, the operator can take the measurement and the analog indicator will show either positive or negative movement. The operator then interprets the pointer’s position to read the measurement. He then records the measurement generally by hand, before typing it into a computer. 

It has been proven by time that Analog Indicators indeed take precision measurements, however, some builders just toss them in the tool box with all the other tools but builders who have been in the industry for a long time would know how important they are, they might even own more than one analog indicator. It is also important that analog indicators be kept clean and properly stored in their own cabinets or a separate tool box with other precision devices.

What Are The Types Of Weighing Indicators?

  • Fixed Scale Indicators- The scale does not move with the pointer. Used in vehicle speedometers and analog power mate. Under Fixed Scale Indicators are a variety of indicators such as the Straight Uneven Scale, Circular Recorder with Concentric Indicator, and the Multiple Scale Indicator. 
  • Movable Scale Indicators- With this indicator, the scale will move with the change in the input, however, the pointer remains the same.
  • Gauge Dial Indicator- The most used and most famous indicator especially in working atmospheres where vibration is used is the added glycerine that allows the pointer to never get disturbed. 
  • Inclined Manometer Indicator- With this type of indicator, the liquid travels in the inclined direction because of the pressure applied at input. 
  • Rotating Disc Movable Scale Indicator- These are mostly seen in houses, hospitals, gyms. This is also movable which makes it more convenient for such places.

What Is A Digital Indicator?

It is no secret that with the invention of the Digital Indicator, the work of an operator became so much easier. The operator simply has to position the workpiece and press a button-  no need to even read the measurement. Digital Indicators can record measurements, usually as an actual value, such as 20.00 mm, and transmit the data directly to a computer or printer or SPC programs with no operator errors in recording or reading. With an SPC program installed, the operator receives a record of the measurement results in a database table or spreadsheet format and interprets them through performing statistical analysis.

This feature of the Digital Indicator eliminates manual recording of endless columns of numbers, reduces errors made by the operator, and improves work productivity with less time spent on recording data and copying tasks.  A Digital Indicator also provides switching between units with an easy press of a button-  no need to type into a calculator or search into a browser just to get the separate unit conversion.

Both Analog Indicator and Digital Indicators are precise measuring devices, although the Digital Indicator is proven to be more reliable when it comes to the shop floor environment. Digital Indicators only have a single moving part which demands less frequent cleaning compared to other mechanical devices. With Digital Indicators now offering IP Ratings, you can never worry about using them in wet, dusty or other harsh environments making them such a great investment for your business. If you want to know more about Digital Indicators and the weighing industry in general, the dedicated engineers from Gedge Systems will be pleased to help you out.


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