Seaward DO4A 数字欧姆表 (40mΩ~4kΩ, 10µΩ~1Ω, 100µA~100mA)

Range: 4kΩ, 400Ω, 40Ω, 4Ω, 400mΩ, 40mΩ

Resolution: 1Ω, 100Ω, 10Ω, 1mΩ, 100µΩ, 10µΩ

Typical Current: 100µA, 1mA, 10mA, 100mA

Accuracy @ 20°C±5°C 1 year: ±(0.05% Rdg +0.02% FS), ± (0.05% Rdg +0.03% FS), ± (0.05% Rdg +0.05% FS)

Temp Coefficient/°C: 30ppm Rdg + 1ppm FS, 30ppm Rdg + 4ppm FS, 30ppm Rdg + 25ppm FS

Measurement: 4 terminal Kelvin/Thomson principle eliminates errors due to lead resistance

Display: 15mm LCD 4000 count with automatic decimal point and polarity indication

Ranges: 6 push button selected with LED indication

Terminals: 4mm binding posts accept spade tags and 4mm banana plugs

Mains Supply

100/120/220/240V +10% to 13%

47 - 63Hz 20VA

Safety: EN 61010-1 EMC 61326

Calibration: Digital security key protected

Auto Zero: Permits the automatic zero of amplifiers and external circuits, eliminating errors due to thermal E.M.F

Battery: 6V 2.8Ah sealed lead acid battery with built-in charger. 14 hour typical operating time on lowest range, 28 hours typical on other ranges. Internal charger and automatic switch off.

Dimensions: 

15 x 250 x 88mm / 0.5 x 9.8 x 3.5” (w x d x h) approx

1/2 19” rack 2U high

467 x 374 x 216mm / 18 x 15 x 8.5” (w x d x h) packed in carton

Mass: 3.5kg / 8lbs approx. 4.5kg / 10lbs packed in carton

Working Temperature: 0 to +40°C re. humidity 80% max. non-condensing

Storage Temperature: -20 to +50°C

Supplied complete with mains cord, measuring leads with Kelvin Clips, handbook and certificate of conformity

Datasheet

Manual