How does the dial gauge work?
Table of Contents
How does the dial gauge work?
Dial gauge bases its operation principle on the displacement reading of a mobile cylindrical rod that slides inside a tubular guide. The end of the rod, called probe, is in contact with the surface of the measured object.
How do you calculate dial gauge reading?
Remember that the larger gauge represents a smaller measurement, so while the small gauge might measure in tenths, the outer gauge measures in thousandths. If the hand is pointing at 30, then it means 30 thousandths. To calculate the measurement, divide the number by 1,000. For example, 30/1000=0.030-inches.
How accurate is a dial gauge?
Dial Thickness gauge has an accuracy of 0.01 mm. It has a flat measuring faces used for measuring soft material such as plastic films, felt, rubber, paper, etc. The gauge graduation is represented in millimeter and micron.
How do dial indicators?
The tpical dial indicator consists of a plunger and two dials. As the plunger moves in and out, the dials rotate, indicating plunger travel within an accuracy of 0.001 in. The larger, or outer, dial face is divided into 0.001-in. graduations and the smaller one is divided into revolutions of the larger dial.
How do you zero a dial indicator?
Next, the dial indicator must be zeroed. To do so, rotate the outer dial bezel and position the gauge zero mark directly on (over) the large needle, regardless of where it’s pointing. Once the dial indicator is zeroed, you can take measurements by moving the target part through its range of travel.
How do you use a dial thickness gauge?
Make sure gauge is clean for accurate measurements. Hold the gauge by the handle and open the Contact Points by pressing the Measurement Lever. Place the item to be measured between the Contact Points and gently release the Measurement Lever. Read the measurement off the scales for the Pointer and Revolution Counter.
What are two types of dial indicators?
Types of Dial Indicators:
- #1. Balanced Reading Dial Indicators.
- #2. Continuous Dial Indicator.
- #3. Reversed Balanced Dial Indicators.
- #4. Reversed Continuous Dial Indicators.
- #5. Plunger Dial Indicator.
- #6. Lever Dial Indicator.
How do you zero a dial gauge?
Rotate the face of the indicator until the “0” marking aligns with the dial. Tighten the knob afterward to lock the face in position. Twist the zero adjustment knob if your dial indicator does not feature a rotating face. Continue twisting the knob until the dial aligns with the “0” marking.
How calibration of a dial gauge is done?
Detailed Procedure
- Using index finger, depress the IUT contact point slowly and evenly over the full range, slowly allow the contact point to return to its starting position.
- Securely position the attachment arm onto the indicator checker.
- Position the micrometer thimble and test indicator to obtain zero readings.
Do dial indicators need calibration?
Slipped teeth or incorrect zero settings result in wildly varying and incorrect readings. Calibrating a dial indicator prior to using it is the only way to be sure that the tool is reading correctly and its measurements are accurate.
What is the least count of dial gauge?
0.01 mm
A Precise Dial Test Indicator Least Count: 0.01 mm is used to measure displacement at an angle of a lever.
What is Dial thickness gauge?
Dial Thickness Gauges are used for measuring the thickness of a very wide range of materials such as leather, paperboard, paper,rubber, glass, sheet, metal, films, plywood and plastics. Dial Thickness gauge has an accuracy of 0.01 mm.
How do you calibrate dial thickness gauge?
Detailed Procedure Zero the micrometer dial along with the electro limit gage. Place the IUT between the anvils of the Standard Measuring Machine. Hold the IUT so its center is aligned with the anvils of the Standard Measuring Machine. Make three measurements within a 1/2-inch area and average the three readings.
What is the difference between a dial indicator and a dial test indicator?
Test indicators are pretty distinct from dial indicators. The immediately obvious difference is that test indicators have lever-type contacts, while dial indicators have plunger-type contacts. Test indicators are also smaller and lighter than dial indicators.
Where are dial gauges used?
Dial indicators are one of the primary measuring tools used in precision engine building. They are typically used to measure deck clearances, crankshaft thrust and straightness, lifter travel and other measurements that involve the distance between two surfaces or small amounts of component travel.
