The electronic level gauge, designed for measuring high-precision machine tools such as CNC lathes, milling machines, machining centers, and 3D measuring beds, boasts an extremely high sensitivity.
Detailed introductions are to follow.Electronic LevelDefinition, Principles, and Applications.
1. Electronic Level Definition
A measuring instrument with a base measuring surface, utilizing the principle of balance in a capacitive pendulum to measure the minute tilt angle of the side relative to the horizontal plane.
The instrument that uses a pointer-style indicating device to display measurement values is called a pointer-type electronic level, while the one using a digital indicating device to show measurement values is known as a digital display electronic level.
1. Extended Range Device
A device that re-adjusts instruments to zero position if they are at the limit of measurement, allowing for more extensive range measurements at that horizontal level.
2. Device Adjustment
Devices adjusted to zero position (absolute or relative zero).
Section II: Electronic Level Gauge Principle
Electronic levels operate on either inductive or capacitive principles. Depending on the measurement direction, they can be classified as one-dimensional or two-dimensional electronic levels.
Principle of Inductive Operation: When the base of the level is tilted due to the inclination of the workpiece to be measured, the internal pendulum causes a change in voltage of the induced coil due to its movement.
The capacitive level gauge operates on the principle of a circular pendulum suspended freely from a thin wire. The pendulum is influenced by the force of gravity and remains suspended in a frictionless condition.
The capacitance is equal when both sides of the pendulum have electrodes with the same gap. If the level is affected by the workpiece being measured, causing different distances between the two gaps, the capacitance varies, resulting in angular differences.
III. Technical Requirements
1. Instrument operating conditions
The instrument operates under conditions of 15~25°C.
2. Appearance
The working surface of the instrument must be free from sand holes, blow holes, dents, scratches, burrs, rust, and other defects affecting use; the non-working surfaces exposed must be free from blow holes, sand holes, cracks, rust, and other obvious defects.
The electroplating layer of the instrument should be even and smooth. The painted surface of the instrument must not have any defects such as peeling, spots, scratches, or uneven coloration that would visibly affect the appearance quality.
All markings, numbers, and symbols on the instrument should be clear. The wiring and connectors between the sensor and indicator (or display) should be complete and undamaged, with reliable operation.
The surface of the instrument's plastic housing and handles should be uniformly colored and smooth with an aesthetically pleasing appearance, free from defects such as bubbles and cracks.
3. Tilt Changes
When the instrument's sensor tilts uniformly, the indicator (or display) should change smoothly in response.
The instrument zeroing device and extended range device operate smoothly and reliably.
4. Requirements for Parts
The surface roughness Ra value of the working surface of the grinding instrument should not exceed 0.4 μm.
The bonding points on the working surface of the lapping instrument must not be fewer than 25 within a 25mm x 25mm area.
The hardness of the working surface of the instrument must not be less than 180 HB.
6. Instruments should undergo high-temperature, low-temperature, and continuous impact tests under transport packaging conditions.
7. Electronic Level Gauge Applications
Electronic level gauges, used for measuring high-precision machine tools such as CNC lathes, milling machines, cutting machines, and 3D measuring beds.
Its sensitivity is extremely high; with a 25-degree offset on either side during measurement, the workpiece can be measured within a certain tilt range.
