Key Parameters for Selecting an EIESD Ionizing Bar

Key Parameters for Selecting an EIESD Ionizing Bar

1. Introduction

The right ionizing bar ensures fast static decay, uniform ion distribution, and safe operation.

Selection should be based on product type, working environment, and production requirements.

2. Key Selection Parameters

Parameter Description / Consideration Impact on Performance

Bar Type (AC, DC, Pulsed DC) DC and pulsed DC are common for electronics; AC for general applications Affects ion balance, decay speed, and maintenance

Length Should cover the full width of the target surface Prevents unneutralized zones; ensures uniform coverage

Distance to Target Recommended by manufacturer (typically 20–50 cm) Closer distance increases ion density; too close can risk contact

Airflow / Air-Assisted Option Determines whether ions can be carried to distant or uneven surfaces Essential for low humidity, large panels, or moving targets

Ion Balance Residual voltage (usually ±10–50 V) Ensures no net positive or negative charge remains

Decay Time Time to reduce ±1,000 V to ±100 V Determines production speed compatibility

Environment Compatibility Temperature, humidity, dust, chemical exposure Affects material choice and bar type (corrosion-resistant, heat-resistant)

High-Voltage Module Quality Stability, overload protection, self-test Influences ion output consistency and device safety

Maintenance Requirements Ease of cleaning, replaceable pins Ensures long-term performance and low downtime

Safety & Certifications CE, RoHS, ozone emission compliance Ensures compliance with workplace regulations

Power Supply Requirements Voltage, current, connection type Must match production facility capabilities

3. Selection Guidelines by Application

Industry / Application Recommended Features

SMT / PCB DC or pulsed DC, moderate length, air-assisted optional, tight ion balance

Plastic / Film Air-assisted for wide sheets, corrosion-resistant, adjustable distance

Printing / Packaging AC or pulsed DC, multiple bars for wide webs, airflow to edges

LCD / Optical DC or pulsed DC, full panel coverage, air-assisted to avoid dust adhesion

Automotive Pulsed DC, adjustable length, rugged for dust and temperature

4. Performance Verification

Measure static decay time and ion balance after installation.

Ensure uniform ion coverage across entire target surface.

Adjust distance, airflow, or bar placement if required.

5. Summary Table

Parameter Importance / Notes

Bar Type Determines ion generation method, decay speed, maintenance

Length Must cover full target width; modular for wide surfaces

Distance to Target Manufacturer-specified; affects ion density and safety

Airflow / Air-Assisted Critical for low-humidity, large-area, or fast-moving surfaces

Ion Balance ±10–50 V recommended for electronics or sensitive materials

Decay Time Must meet production speed requirements

Environmental Compatibility Temperature, humidity, dust, chemical resistance

HV Module Quality Stable output and protection features

Maintenance Cleanable pins, replaceable parts for long-term performance

Safety / Certification CE, RoHS, ozone compliance

Power Supply Must match facility capability

Key Takeaways:

Choosing an ionizing bar requires balancing performance, coverage, environment, and safety.

Bar type, length, airflow, ion balance, and decay time are the most critical parameters for production effectiveness.

Always verify performance after installation to ensure consistent static elimination and product quality.