46
IM CA500-02EN
Resistance Measurement
Range
Resolution
Measurement
Range
Accuracy (1 year)
±(% of setting + offset)
Notes
CA500 CA550
400 Ω
10 mΩ
0.00 to 440.00 Ω
0.020% + 0.1 Ω
0.015% +0.05 Ω
Voltage applied current
measurement method
Typical value:
1 mA(0 Ω)
781
μA(400 Ω)
240
μA(4 kΩ)
4000 Ω
100 MΩ
0.0 to 4400.0 Ω
0.020% + 0.5 Ω 0.015% +0.2 Ω
Accuracy guaranteed under +23°C±5°C, 20 to 80%RH
Add a temperature coefficient of 0.005% of Range/°C for -10°C to +18°C and +28°C
to +50°C.
Accuracies through four-wire system measurement
For accuracies through three-wire system measurement, add 0.05
Ω
for 400
Ω range
,
0.2
Ω
for 4000
Ω range
. However, this assumes that the resistances of all cables are
the same.
Assume the accuracies through two-wire system measurement to be the same as
those through three-wire system measurement. However, cable resistance are not
taken into consideration.
Pulse Measurement
Range
Resolution
Measurement
Range
1-Year Accuracy
±(% of setting + offset)
Notes
CA500 CA550
500Hz 0.01 Hz 1.00 to 550.00 Hz 0.005% +0.01 Hz Measurement time: 1.0 s
0.5 V to 30 Vpp
Non-voltage contact
compatible
5000Hz 0.1 Hz 1.0 to 5500.0 Hz 0.005% +0.1 Hz
50kHz 0.001 kHz 0.001 to 50.000 kHz 0.005% +0.001 kHz
PULSE
COUNT
1 0 to 99999 2 Maximum integration time:
60 min, 0.5 V to 30 Vpp
Non-voltage contact
compatible
Accuracy guaranteed under +23°C±5°C, 20 to 80%RH
Add a temperature coefficient of 0.005% of Range/°C for -10°C to +18°C and +28°C
to +50°C.
Loop Power Supply
Supply voltage Notes
24 V ±2 V
Communication resistance: OFF
Maximum load current: 24 mA
5. Specifications