Additel 221A Multifunction Temperature Calibrator User Manual User Manual
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Electrical Signal SourceSpecifications: (working environment: 20±5℃, accuracy for one year)
Table5‐2
Function
Range
Resolution
Accuracy
Voltage DC
‐10.000 to 75.000 mV
1μV
0.02%RD+0.005%FS
0 to 12.0000 V
0.1mV
0.02%RD+0.005%FS
Current DC
0 to 22.000 mA
1μA
0.02%RD+0.005%FS
Resistance
1 to 400.00 Ω
10mΩ
0.02%RD+0.005%FS
1 to 4000.0 Ω
100mΩ
0.03%RD+0.01%FS
Frequency
0 to 50000.0 Hz
0.1Hz
0.005%RD+0.002%FS
Pulse
0 to 999999
1
N/A
DC24V
N/A
N/A
0.5V
Note 1: When ambient temperature is (‐10 to 15℃ and 25to 50℃), temperature coefficients are:
(1) Voltage, current, resistance source: ±(0.001%RD＋0.0015%FS) /℃.
Note 2: Source features:
(1) Millivoltssource: Max load capability is 1mA, load variance ratio less than 50μV/mA.
(2) 12V source: Max load capability is 5mA, load variance ratio less than 1mV/mA.
(3) Current source: Internal 24V power supply, max load capability is 20mA@1kΩ; External power supply, the max
voltage is 36V.
(4) Simulating resistance: (1Ω to 110Ω)exciting current (0.6mA to 4mA), (110Ωto 400Ω)exciting current (0.3mA to
4mA), (400Ω to 1000Ω)exciting current (0.06mA to 1.5mA), (1000Ωto 4000Ω)exciting current (0.01mA to