Transforming Technologies 7100.EFM51, Warmbier 7100.EFM51 Electrostatic Field Meter
Transforming Technologies 7100.EFM51 / Warmbier EFM51 Electrostatic Field Meter
The Transforming Technologies 7100.EFM51 (Warmbier EFM51) is a full-featured handheld electrostatic field meter used to perform static surveys and evaluate charge accumulation in electronic manufacturing and industrial operations. It measures static voltages within ±20kV (20,000V) and calculates field strength (V/m) at four selectable distances. Results are displayed on a 12-digit alphanumeric LCD screen, and two LED guide ring lights help position the meter at the correct distance from the charged test object. Compliant with ANSI/EOS/ESD S4.1, S7.1, S12.1, S2.1, and ESD TR53 — the EFM51 is a trusted standard for ESD program audits and ionizer performance verification in ANSI/ESD S20.20 and IEC 61340-5-1 compliant facilities.
±20kV range | 4 selectable distances | ANSI/ESD TR53 compliant | Ionizer testing capable
Industries & Applications
- Electronics Manufacturing (EMS / OEM) — Perform periodic static surveys per ANSI/ESD S20.20 to identify charge accumulation on workbenches, flooring, garments, and packaging materials
- ESD Program Audits — Conduct compliance verification surveys per ESD TR53; document field measurements at workstations, equipment, and material handling areas
- Ionizer Performance Testing — Verify ionizer efficiency, offset voltage, and static decay time when paired with the optional EFM51.CPS Charge Plate Set
- Semiconductor & Microelectronics Facilities — Monitor static field levels in cleanrooms and controlled environments where ESD-sensitive devices are handled
- Aerospace & Defense Electronics — Support ESD control program compliance audits required under IEC 61340-5-1 and ANSI/ESD S20.20
- Quality & Process Engineering — Investigate ESD events, troubleshoot field sources, and validate ESD control measures at process steps
Key Features
- ±20kV measurement range — detects and measures electrostatic charge accumulation on surfaces up to 20,000V
- 4 selectable measurement distances — 1cm, 5cm, 10cm, and 20cm for flexible field strength calculation in V/m
- LED guide ring lights — two LEDs help position the meter at the correct distance for repeatable measurements
- Pocket-size, handheld form factor — compact and portable for static surveys throughout the facility
- Ionizer performance verification — compatible with EFM51.CPS Charge Plate Set to verify ionizer efficiency, offset voltage, and decay time from ±1,000V to ±100V
- ANSI/ESD compliant — meets periodic test requirements per ESD TR53; conforms to ANSI/EOS/ESD S4.1, S7.1, S12.1, S2.1
- 12-digit alphanumeric LCD — clear display of field measurements and calculated values
- Includes storage bag, ground cable, and clip — ready to use out of the box
Technical Specifications
| Specification | Value |
|---|---|
| Model | 7100.EFM51 |
| Manufacturer | Transforming Technologies / Warmbier |
| Measurement Range | ±20kV (±20,000V) |
| Field Strength Calculation | V/m at 1cm, 5cm, 10cm, and 20cm |
| Display | 12-digit alphanumeric LCD |
| Guide Lights | Two LED guide ring lights for distance positioning |
| Form Factor | Pocket-size, handheld |
| Country of Origin | Germany |
| Includes | Storage bag, ground cable, and clip |
| Ionizer Testing | Compatible with EFM51.CPS Charge Plate Set (sold separately) |
| Compliance | ANSI/EOS/ESD S4.1, S7.1, S12.1, S2.1; ESD TR53 |
| SKU | 7100.EFM51 |
EFM51 System — Available Configurations
| SKU | Description | Best For |
|---|---|---|
| 7100.EFM51 | EFM51 Field Meter only | Static surveys and field measurements; ionizer testing with optional CPS |
| 7100.EFM51.CPS | EFM51 + Charge Plate System | Complete ionizer performance verification including decay time testing |
| 7100.EFM51.CPS.SET | Charge Plate Set only (meter not included) | Adding charge plate capability to an existing EFM51 |
| 7100.EFM51.WT | EFM51 + Walking Test Kit | Walking body voltage and static survey in one kit |
| 7100.EFM51.VK | EFM51 Verification Kit | Verifying EFM51 meter accuracy and calibration |
Frequently Asked Questions
What does the EFM51 measure?
The EFM51 measures electrostatic field strength and static voltages within ±20kV (20,000V). It calculates field strength in V/m at four selectable distances (1cm, 5cm, 10cm, 20cm) and displays results on a 12-digit alphanumeric LCD.
Can the EFM51 test ionizer performance?
Yes — the EFM51 is compatible with the optional EFM51.CPS Charge Plate Set to verify ionizer efficiency, offset voltage, and static decay time from ±1,000V to ±100V. The Charge Plate Set is sold separately. Contact MTE Solutions for the complete EFM51.CPS system.
What ANSI/ESD standards does the EFM51 comply with?
The EFM51 meets periodic test requirements per ESD TR53 (Compliance Verification of ESD Protective Equipment and Materials) and conforms to ANSI/EOS/ESD standards S4.1 (worksurfaces), S7.1 (wrist straps), S12.1 (flooring), and S2.1 (ionization). These are the primary standards for ESD program compliance verification in ANSI/ESD S20.20 and IEC 61340-5-1 certified facilities.
What is included with the EFM51?
The EFM51 ships with a storage bag, ground cable, and clip. The EFM51.CPS Charge Plate Set for ionizer testing is available separately — see the 7100.EFM51.CPS listing or contact MTE Solutions at 651.600.3838.
What is the difference between the EFM51 and the EFM51.CPS system?
The EFM51 alone measures static field strength at surfaces. The EFM51.CPS adds a charge plate system that allows the meter to measure ionizer discharge times — required for full ionizer performance verification per ANSI/ESD S20.20 and ESD TR53. If you need to verify ionizer performance, the EFM51.CPS system is required.
Is the EFM51 made in Germany?
Yes — the EFM51 is manufactured by Wolfgang Warmbier GmbH in Germany and distributed in North America by Transforming Technologies. It is a precision instrument built to German metrology standards.
