48
IM CA310-02EN
Resistance Source/Measurement Specifications
Range
Measurement Range
Resolution
Accuracy (1 year)
Notes
of Reading
of Setting
Offset
500 Ω
0.00 to 550.00 Ω
0.01 Ω
0.025%
0.1 Ω
Excitation current input range 0.1 to 3 mA
3000 Ω
0.0 to 3300.0 Ω
0.1 Ω
0.025%
0.5 Ω
Excitation current input range 0.05 to 0.6 mA
At the ambient temperature (Ta) of 23±5°C. For the accuracies of other ambient temperature ranges (Ta<18°C, Ta>28°C), add the
temperature coefficient 0.005% of Range/°C.
The above figures are accuracies through four-wire system measurement.
For accuracies through three-wire system measurement, add 0.05 Ω for the 500 Ω range and 0.2 Ω for the 3000 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.
Common Measurement Section Specifications
Excitation current:
Voltage application, current measurement method
(Typical value: 0.78 mA@0 Ω, 0.6 mA@500 Ω, 0.27 mA@3000 Ω)
Burnout detection:
Detected based on Hi terminal open
Allowable signal cable resistance: 10 Ω or less
Maximum input across terminals:
42 Vpeak
Maximum input to ground:
42 Vpeak
Common Source Section Specifications
Output response:
5 ms or less (3000 Ω range, excluding PT500 and PT1000)
Overcurrent input warning:
When the upper limit of excitation current is exceeded
Maximum load:
C≤0.1 μF, L≤10 mH
Sweep:
Step (25%)/linear
Step time:
15s/30s/45s/60s
Maximum input across terminals:
42 Vpeak
Maximum input to ground:
42 Vpeak
Specifications
