ESD Probes
ESD Measuring
ESD sensors and electrodes are the critical measurement interfaces in any electrostatic protection program - converting surface charge, field strength, and ionization balance into verifiable electrical signals. High-quality field meters typically measure electrostatic fields from 0 to ±20 kV at distances of 25-300 mm, while surface resistance probes operate across a resistance range of 10¹ to 10¹² Ω in compliance with IEC 61340-5-1 and ANSI/ESD S7.1. Ionizer performance electrodes verify offset voltage to within ±5 V and discharge times below 2 seconds per IEC 61340-5-1 requirements.
As a specialist distributor for ESD measurement and test equipment, esd.equipment stocks 33 sensors and electrode types from leading manufacturers - all verified against DIN EN 61340-5-1, ANSI/ESD S20.20, and IEC 61010-1 for safe use in EPA-controlled environments. Whether you require replacement electrodes for existing test instruments, standalone field sensors for process monitoring, or ionizer verification probes, this range covers the full measurement chain for a compliant ESD control program.
ESD Sensor and Electrode Types - Technical Comparison
| Criterion | Field Sensor / Fieldmeter | Resistance Probe Electrode | Ionizer Verification Electrode | Charge Plate Assembly |
|---|---|---|---|---|
| Primary measurand | Electrostatic field (V/m or kV) | Surface / volume resistance (Ω) | Offset voltage (V), balance | Discharge time (s), offset voltage |
| Measurement range | 0 to ±20 kV (at 25-300 mm) | 10¹ - 10¹² Ω | ±5 V offset, ±2 kV charge | 0 to ±1 kV, decay < 2 s |
| Applicable standard | IEC 61340-5-1, ANSI/ESD S20.20 | ANSI/ESD S7.1, IEC 61340-4-1 | IEC 61340-5-1 Sec. 5.3 | ANSI/ESD S3.1, IEC 61340-4-7 |
| Typical instrument connection | Standalone or BNC to fieldmeter | Banana / BNC to resistance meter | BNC to ionizer analyzer | BNC / SMA to charge plate monitor |
| Key EPA application | Workstation and process field survey | Mat, flooring, garment testing | Ionizer audit and certification | Ionizer acceptance and periodic test |
| Replacement / calibration cycle | Annual calibration recommended | Annual calibration | Annual or after mechanical impact | Annual calibration, traceable |
Typical application areas: Electronics manufacturing and SMT assembly (IPC-A-610, IEC 61340-5-1), semiconductor wafer handling and fab environments (SEMI S1/S2, SEMI E187), medical device manufacturing (ISO 13485, IEC 61340-5-1), automotive electronics and ECU production (IATF 16949, VDA 6.3), aerospace and defense electronics assembly (AS9100, ANSI/ESD S20.20), R&D laboratories and ESD audit services requiring traceable field and resistance measurements.
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