DO4A Issue 3/2001
7
7.
Technical Data
Digital Display
4 digit, LCD 15 mm height with automatic
decimal point units and error warning lamps
Working temperature
0...+40°C rel. humidity max. 65%
Calibration temperature
20°C
Storage temperature
-20°C ... +50°C
Mains connection
100/120/220/240V + 10 - 13% 47-63 Hz
Warm-up time
Approx. 30 mins.
Size (mm.)
215 x 88 x 250 (WHD), ½ 19" rack
2U high
Mass
3.5 Kgs.
Measurement
Resistance
True four terminal measurement
with fixed dc measuring currents.
Measuring time
Approx. 0.5 seconds
Auto-zero
Permits the automatic zero of
amplifiers eliminating errors due to
thermal emf
Range
Resolution
Typical
Current
Accuracy @ 20
°
C
±
5
°
C,
1 year
Temperature Coefficient/
°
C
4 k
Ω
1
Ω
100
µ
A
±
(0.
0
5% Rdg +0.02% FS) 30 ppm Rdg + 1 ppm FS
400
Ω
100 m
Ω
1 mA
±
(0.
0
5% Rdg +0.02% FS) 30 ppm Rdg + 1 ppm FS
40
Ω
10 m
Ω
10 mA
±
(0.
0
5% Rdg +0.02% FS) 30 ppm Rdg + 1 ppm FS
4
Ω
1 m
Ω
10 mA
±
(0.
0
5% Rdg +0.03% FS) 30 ppm Rdg + 4 ppm FS
400m
Ω
100
µΩ
10 mA
±
(0.
0
5% Rdg +0.05% FS) 30 ppm Rdg +25 ppm FS
40m
Ω
10
µΩ
100 mA
±
(0.
0
5% Rdg +0.05% FS) 30 ppm Rdg +25 ppm FS
