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ΩMEGASAFE EP 4Ex Ex-proof low-impendance tester
Features & Functions

Resistance Measuring:

  • Precise indication of resistance between 10 mΩ up to 2 MΩ

  • Universally applicable due to large measuring range and automatic range selection

  • Energy-saving circuit for high measuring current 0.2 A for low-ohm range up to 10 Ω

  • Large display with backlight

  • Acoustic warning signal for resistances less than 2 Ω

  • Fast compensation of measuring line per keypress

  • Automatic pole change and storage of measurement results (+/- values)

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Safety:

  • Clear LED indicator for dangerous voltage

  • Voltage value displayed on LCD with warning acoustic signal

  • Protection circuit against external voltages up to 400 V

  • Integrated fuse for overvoltages > 400 V

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Further Functions:

  • Varied accessories

  • Easy handling and compact design

  • Robust casing

  • IP 65 – waterproof

Meet The ΩMegaSafe EP 4Ex

  • resistance range: 0,01 Ohm – 2 MOhm

  • safety: CAT III 300 V / CAT II 600 V

  • Ex Protection II 2G Ex ib IIC T4

  • including test line

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Optional Accessories:
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Technical data 

Model:
EP 4

EP 4Ex

ISO 1

ISO 1Ex

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Resistance Range

  • EP 4: 0.01 Ohm – 2 MOhm

  • EP 4Ex: 1 kOhm – 20 GOhm

  • ISO 1: 1 kOhm – 2 TOhm

  • ISO 1Ex: 1 kOhm – 2 TOhm

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Test Voltage

  • EP 4: -

  • EP 4Ex: 100 V, 250 V, 500 V, 1000 V

  • ISO 1: 32V, 100 V, 500 V

  • ISO 1Ex: 32V, 100 V, 500 V

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Test Current

  • EP 4: max. 200 mA

  • EP 4Ex: 1 mA

  • ISO 1: -

  • ISO 1Ex: -

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Continuity Tester with Sound

  • EP 4: Yes

  • EP 4Ex: No

  • ISO 1: No

  • ISO 1Ex: No

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Connection / Electrode

  • EP 4: + Electrode 4 mm, - Socket for 4 mm plug

  • EP 4Ex: + Electrode 4 mm, - Socket for 4 mm plug

  • ISO 1: + Electrode 4/15 mm, - Socket for 4 mm plug

  • ISO 1Ex: + Socket for 4 mm plug, - Socket for 4 mm plug

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Power Supply

  • All models: 1 x 9 V​​

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Protection Class

  • All models: IP 65

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Ex Approval According to ATEX

  • EP 4: No

  • EP 4Ex: Yes, ll 2G Ex ib llC T4 Gb (according to DIN EN 60079-0 and DIN EN 60079-11)

  • ISO 1: No

  • ISO 1Ex: Yes, ll 2G and l M2 ib llB T4 (according to DIN EN 60079-0 and DIN EN 60079-11)

Overvoltage Category

  • EP 4, EP 4Ex: CAT III 300 V, CAT II 600 V (according to EN/IEC 61010-1)

  • ISO 1, ISO 1Ex: CAT IV 600 V, CAT III 1000 V, CAT III 600 V (according to EN/IEC 61010-1)

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Ex Maximum Values

  • EP 4, ISO 1: -

  • EP 4Ex: U0 = 8.7V, I0 = 220 mA, P0 = 1.3 W

    • Maximum allowable inductance: 0.2 mH

    • Maximum allowable capacitance: 5.0 µF

  • ​

  • ISO 1Ex: U0 = 550 V, I0 = 1.5 mA

    • Maximum allowable inductance: 28 H

    • Maximum allowable capacitance: 1 nF

  • ​

Ambient Temperature

  • EP 4, ISO 1: -10 ... +50 °C

  • EP 4Ex, ISO 1Ex: -10 ... +40 °C

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Application Area

  • EP 4, EP 4Ex: Testing protective measures according to IEC 61557-4 (VDE 0413 Part 4), e.g., protective conductor testing or machine grounding testing

  • ISO 1, ISO 1Ex: Testing protective measures according to IEC 61557-2 (VDE 0413 Part 2), e.g., leakage testing of floors and surfaces

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Article Number

  • EP 4: 83302

  • EP 4Ex: 83301

  • ISO 1: 83315

  • ISO 1Ex: 83310

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Product Dimensions & Weight

  • EP 4: 230 x 60 x 40 mm, 180 g

  • EP 4Ex: 230 x 60 x 40 mm, 220 g

  • ISO 1: 230 x 60 x 40 mm, 220 g

  • ISO 1Ex: 230 x 60 x 40 mm, 220 g

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Packaged Product Dimensions & Weight

  • EP 4: 300 x 100 x 50 mm, 350 g

  • EP 4Ex: 300 x 100 x 50 mm, 370 g

  • ISO 1: 300 x 100 x 50 mm, 400 g

  • ISO 1Ex: 300 x 100 x 50 mm, 450 g

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