Transforming Technologies 7100.EFM51 / Warmbier 7100.EFM51 Electrostatic Field Meter The 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. Key Specifications Specification Value Model 7100.EFM51 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 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 Key Features ±20kV measurement range — detects and measures electrostatic charge accumulation on surfaces 4 selectable measurement distances — 1cm, 5cm, 10cm, and 20cm for flexible field strength calculation LED guide ring lights — two LEDs help position the meter at the correct distance from the test object for repeatable measurements Pocket-size form factor — compact and portable for static surveys throughout the facility Ionizer performance verification — compatible with EFM51.CPS Charge Plate Set to check ionizer efficiency and offset voltage; measures static decay times 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 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 can be used with the optional EFM51.CPS Charge Plate Set to verify ionizer efficiency and offset voltage. The kit measures static decay times from ±1,000V to ±100V. The Charge Plate Set is sold separately. What standards does the EFM51 comply with?The EFM51 meets periodic test requirements per Compliance Verification ESD TR53 and conforms to ANSI/EOS/ESD standards S4.1, S7.1, S12.1, and S2.1. 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. Technical Datasheet (PDF)
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