AMPTEC RESEARCH 620A-4 Digital Failsafe Ohmmeter (20 Ω,2000 Ω)

Range, Resolution, Accuracy, and Current Levels

Range: 20 Ω

Nominal Current: 5 mA

Failsafe Current: 8 mA

Resolution: 1 mΩ

Accuracy: ± .02% of reading & range

Range: 200 Ω

Nominal Current: .5 mA

Failsafe Current:8 mA

Resolution:10 mΩ

Accuracy:± .02% of reading & range

Range: 2K Ω

Nominal Current: 50 uA

Failsafe Current: 8 mA

Resolution: 100 mΩ

Accuracy: ± .02% of reading & range

Range: 20K Ω

Nominal Current: 5 uA

Failsafe Current: 8 mA

Resolution: 1 Ω

Accuracy: ± .02% of reading & range

General Specifications

Display: 4 1/2 digit LED

Terminal: 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 (Standard Version):3.5 lbs.

Power: 4 ea rechargeable 5AHr NICAD batteries

Max. Input Voltage: 250 VDC

Open CircuitP: 1.6 VDC

Max. Internal Voltage: 4.8 VDC

Update:3 readings/second

Temperature Coefficient: ± .002% per 1° C

Data sheet

Manual