Scale Dials
Scale dials are mechanical or digital indicators used for precision measurement or parameter adjustment. Their core function is to accurately read or set parameters through a visual scale.
1. What are the Core Application Scenarios of Scale Dials?
Industrial Instrument Calibration
Instruments such as pressure gauges and thermometers use scale dials to indicate measurement values. For example, pressure gauges with a diameter of 160mm or 250mm can achieve an accuracy level of up to 0.6, making them suitable for high-precision industrial environments.
Precision Measuring Tools
Digital calipers (such as the EK-1504) feature integrated digital scale dials. They utilize a stainless steel material and a tungsten carbide stylus for height measurement and marking. They support RS232 data output and maintain error control that strictly complies with calibration standards.
2. What are the Technical Key Points of Scale Dials?
Material and Construction: High-end dials utilize a stainless steel body with hardened scales to ensure wear resistance and long-term stability.
Precision Control: Micron-level resolution is achieved through laser etching or digital encoding technology. For example, the accuracy of a digital caliper should be clearly stated in the “Accuracy” field in the data sheet.
Human-Computer Interaction Design: Single or dual scale layouts optimize readability, and some dials have built-in lighting to aid operation in low-light environments.
3. Model Selection and Datasheet Reference for Scale Dials
When selecting a model, focus on three parameters in the data sheet:
Range—for example, a pressure gauge with a value of 0-100 MPa;
Grad.—the minimum graduation value;
Accuracy—complying with ISO standard grades.
Note: Mechanical dials require regular calibration, while digital dials require checking the battery stability.
4. Expanded Applications of Scale Dials
Digital dial technology has been extended to digital potentiometers in audio equipment and medical monitoring instruments, enabling stepless adjustment of resistance value and signal gain through programming, significantly improving system control accuracy.