Electrostatic discharge (ESD) measurement is of particular importance in many fields, from industrial production to daily life. Accurate measurements help detect, control, and minimize risks associated with electrostatic discharge, thereby protecting equipment, improving product quality, and ensuring safety. 

Here are the main reasons explaining the importance of measuring static electricity:

In industrial production

• Protecting electronic components: In the electronics and semiconductor industries, components are highly sensitive to electrostatic discharge (ESD). Even a small electrostatic current can cause permanent or potential damage, leading to reduced product quality and lifespan. Electrostatic measurement helps identify high-risk areas so that preventative measures can be implemented promptly.

• Preventing fires and explosions: In environments containing flammable or explosive materials such as chemicals, paints, or fine powders, electrical sparks from static electricity can trigger fires and explosions. Static electricity measurement is a necessary step in controlling this risk, especially in manufacturing plants and clean rooms.

• Improve production efficiency: Static electricity can cause many problems in the manufacturing process, such as causing thin materials like films and paper to stick together or repel each other. Measuring and controlling static electricity helps to overcome this problem, ensuring a smooth production process and reducing product defects.

• Product quality control: Static electricity can cause dust and dirt to adhere to product surfaces, affecting quality and aesthetics, especially in the paint, printing, and packaging industries. Regular measurements help maintain a clean environment and ensure products meet standards. 

In life and research

• Safety risk assessment: Static electricity is not only unpleasant when you touch metal objects and get a slight shock, but it can also be dangerous in specific environments. Measurement helps assess the level of potential risk to people and equipment.
• Research and development: In laboratories, accurate measurement of electrostatic parameters (such as static voltage and electric field) is essential to ensure the accuracy of experiments and research results.
• Testing anti-static materials: Electrostatic discharge (ESD) testing helps to check and evaluate the effectiveness of anti-static materials, clothing, and equipment before they are put into use. 

The parameters to be measured.

To effectively control static electricity, various parameters need to be measured depending on the intended use: 

• Static voltage: Measure the electrostatic voltage level on the surface of a material or device.
• Surface resistance: Measuring the electrical conductivity of a surface helps determine whether a material is a conductor, an electrostatic discharge, or an insulator.
• Discharge time: Measure the time it takes for the electrical charge on the material to dissipate completely.

Electrostatic measurement transforms an invisible phenomenon into a visible one, providing the quantitative data necessary to address related issues effectively and safely. 

Electrostatic discharge (ESD) is measured using specialized equipment such as handheld electric field meters or surface resistance meters. Each type of equipment has different uses and measurement purposes. 

1. How to measure static electricity using a handheld electric field meter.

This is a common method for non-contact measurement of electrostatic voltage on a material surface.

1. Prepare equipmentTurn on the meter and ensure the device is grounded (if necessary) for accurate results.
2. Set the measurement distance.Point the probe of the measuring device towards the object to be measured. This distance is usually specified by the manufacturer, for example, from 5 mm to 25 mm.
3. Read the resultsKeep the device steady and read the voltage value (usually V or kV) on the display. Some devices can measure both positive (+) and negative (-) voltages.
4. Perform various measurements.Move the meter across several points on the material surface to get an overall view of the level of static electricity. 

2. How to measure static electricity using a surface resistance meter.

This method helps determine the electrical conductivity of a material's surface to assess its antistatic properties.

1. PreparePlace the measuring device on the surface of the material to be tested.
2. Set the measurement mode.:
   • For surface resistance measurementPlace the two electrodes of the device on the surface, at a certain distance apart. The device will measure the resistance between these two points.
   • For measuring resistance to groundPlace one electrode on the surface and the other electrode on the ground. The device will measure the resistance from the surface to the ground connection.
3. Read the resultsPress the power button and read the resistance value (in Ohms) displayed on the screen. The lower the value, the better the material's conductivity and anti-static properties. 

3. How to test electrostatic discharge (ionizer) devices

The meter can be used to test the effectiveness of electrostatic discharge devices (ionizers), such as ion blowers.

1. Measure the elimination time.Place a special material (CPM plate) with an electrical charge into the ion field of the blower.
2. Start measuringUse a measuring device to record the time it takes for the electrical charge on the material to decrease from a high value (e.g., 1000V) to a lower value (e.g., 100V).
3. EvaluateThe shorter the elimination time, the more effective the static electricity removal device will be. 

Important notes when measuring static electricity:

• SurroundingsAir humidity has a significant impact on electrostatic discharge (ESD) measurement results. High humidity helps to disperse static electricity, while low humidity makes it easier for static electricity to accumulate.
• Ensuring safetyIn flammable or explosive environments, extreme caution is required when measuring static electricity to avoid generating sparks.
• Read the instructions carefully.Always carefully read the manufacturer's instructions for each specific type of measuring device.

Semiki Company has experience and expertise in consulting and supplying measurement equipment, including genuine surface resistance and electrostatic discharge measuring devices. 

• Notable brands: Semiki is a distributor and supplier of electrostatic discharge (ESD) measurement solutions. Desco in Vietnam. They also supply electrostatic discharge measuring equipment. SimcoShishido SSD is a well-known Japanese brand.
• Some typical products:
  • Desco 19290 Surface Resistance Meter: Designed to measure electrostatic surface resistance.
  • Desco 19270 Combo Tester X3: Used to measure electrostatic discharge (ESD) voltage.
  • Simco FMX-004 electrostatic meter: Measure the electrostatic voltage on materials, plastic films, fabrics, packaging, etc.
  • Simco ST-4 Work Surface Tester: Measure the surface resistance of the work areas.
• Support services: In addition to supplying equipment, Semiki also provides services such as solution consulting, technical support, and repair of measuring equipment. 

If you require specific advice on surface resistance and electrostatic discharge (ESD) measuring equipment from Desco, Simco, Shishido SSD, or Semiki, Semiki is a reliable company to contact.