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Home | Products | Explosive Bridge Wire Testing | 620ES | Mid-Range Digital Failsafe Ohmmeter

The AMPTEC 620ES failsafe ohmmeter was specifically designed for ultra-safe testing on squibs, flares, bridge-wire, and other explosive devices. The 620ES meets mid-range resistance requirements and offers a fail-safe current limiting resistor network circuitry to insure test currents cannot exceed 8 mA. Capable of making highly accurate resistance measurements from 2 Ω to 200 KΩ, this ohmmeter has a proven track record of durability: with 20+ year old units still being used in the field today. This product was derived from the USAF Non-Nuclear Munitions Safety Board approved AMPTEC 620A-4 meter – thus creating a product line that is the industry standard in igniter testing.

Description

Range, Resolution, Accuracy, & Current Levels

Range2 Ω20 Ω200 Ω200K Ω
Nominal Current5 mA5 mA50 uA.5 uA
Failsafe Current8 mA8 mA8 mA8 mA
Resolution100 uΩ1 mΩ10 mΩ10 Ω
Accuracy± .02% of reading & ± .05% of range± .02% of reading & range± .02% of reading & range± .02% of reading & of range

General Specifications

Display4 1/2 digit LEDTerminalsBanana jack binding posts
Storage Temperature Range-20° to 70° COperating Temperature Range0° to 50° C
Dimensions9.75″ x 10″ x 3.25″Weight3.5 lbs.
Power4 ea rechargeable 5AHr NICAD batteriesMax. Input Voltage250 VDC
Open Circuit1.6 VDCMax. Internal Voltage4.8 VDC
Update3 readings/secondTemperature Coefficient± .002% per 1° C

For further specifications (such as the various modified versions of this product) contact us or see the product data sheet.

Additional information

Weight5 lbs
Dimensions36 × 36 × 36 in
Contact To Purchase
  • Specifications
  • Ordering Information
  • Downloads

Range, Resolution, Accuracy, & Current Levels

Range2 Ω20 Ω200 Ω200K Ω
Nominal Current5 mA5 mA50 uA.5 uA
Failsafe Current8 mA8 mA8 mA8 mA
Resolution100 uΩ1 mΩ10 mΩ10 Ω
Accuracy± .02% of reading & ± .05% of range± .02% of reading & range± .02% of reading & range± .02% of reading & of range

General Specifications

Display4 1/2 digit LEDTerminalsBanana jack binding posts
Storage Temperature Range-20° to 70° COperating Temperature Range0° to 50° C
Dimensions9.75″ x 10″ x 3.25″Weight3.5 lbs.
Power4 ea rechargeable 5AHr NICAD batteriesMax. Input Voltage250 VDC
Open Circuit1.6 VDCMax. Internal Voltage4.8 VDC
Update3 readings/secondTemperature Coefficient± .002% per 1° C

For further specifications (such as the various modified versions of this product) contact us or see the product data sheet.

Pricing Request

    Downloads

    Data Sheet Manual