62
IM CA500-02EN
RTD
Coef Source/measurement accuracy (1 year,
t: source/measurement temperature)
Allowable
Excitation
Current
Standard,
Citation
Temperature Range
CA550
±
[°C]
PT50G
- -200.0°C ≤ t < +100.0°C 0.2 0.1 to 3 mA GOST R
8.625-2006
+100.0°C ≤ t ≤ +800.0°C 0.2+(t-100)x
0.033%
PT100G
- -200.0°C ≤ t < +100.0°C 0.1 0.1 to 3 mA GOST R
8.625-2006
+100.0°C ≤ t ≤ +630.0°C 0.1+(t-100)x
0.033%
Cu50M
- -180.0°C ≤ t ≤ +200.0°C 0.2 0.1 to 3 mA GOST R
8.625-2006
Cu100M
- -180.0°C ≤ t ≤ +200.0°C 0.1 0.1 to 3 mA GOST R
8.625-2006
Accuracy guaranteed under +23°C±5°C, 20 to 80%RH
Add a temperature coefficient of 0.05°C/°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 1.0°C for Cu10,
0.6°C for Pt50, Pt50G, and Cu50M, and 0.3°C for other RTDs. 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.
Display resolution of source/measured values: 0.1°C
1 Complies also with JIS C 1604
Source Section
• Resistance value conversion function
• Overcurrent input warning: When the upper of allowable excitation current is
exceeded
• The source accuracy is defined for the following conditions.
• The included binding post (99045) is used to source the signal.
• The specified cable is used to source the signal.
• The effect of the voltage drop in the cable is excluded.
• The effect of the aging of the instrument is excluded.
Measurement Section
• Wiring system: Select 2W, 3W, or 4W.
• Burnout detection: Only the measurement cable on the HI side is detected.
• Measurement current: 1 mA (0 Ω), 781 μA (400 Ω), 240 μA (4 kΩ)
• Allowable cable resistance: 10 Ω or less
5. Specifications
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