Amptec Research Front View of 620EH Igniter Tester
620EH | Mid Range Failsafe Igniter Tester
September 4, 2015
620LM igniter tester diode test capability
620LM | Failsafe Igniter Tester with Diode Test Capability
September 4, 2015
Show all

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.
Please contact us to purchase.



Range, Resolution, Accuracy, & Current Levels

Range 2 Ω 20 Ω 200 Ω 200K Ω
Nominal Current 5 mA 5 mA 50 uA .5 uA
Failsafe Current 8 mA 8 mA 8 mA 8 mA
Resolution 100 uΩ 1 mΩ 10 mΩ 10 Ω
Accuracy ± .02% of reading & ± .05% of range ± .02% of reading & range ± .02% of reading & range ± .02% of reading & of range

General Specifications

Display 4 1/2 digit LED Terminals Banana jack binding posts
Storage Temperature Range -20° to 70° C Operating Temperature Range 0° to 50° C
Dimensions 9.75″ x 10″ x 3.25″ Weight 3.5 lbs.
Power 4 ea rechargeable 5AHr NICAD batteries Max. Input Voltage 250 VDC
Open Circuit 1.6 VDC Max. Internal Voltage 4.8 VDC
Update 3 readings/second Temperature 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.

Ordering Information

This product is unavailable for online purchase. For specific pricing information or to place an order for a 620ES failsafe ohmmeter, please contact us today.

Product Description Price
620ES Includes 620ES failsafe ohmmeter, (OP-300) lead set, (620-DC) battery charger, & U.S. N.I.S.T Calibration Certificate. Request a quote!
Lead/Probe Sets The 620ES ohmmeter is compatible with our 620 Series probe/lead sets and accessories.