Specifications
132
Temperature Input (Temperature Probes) Characteristics
The table describes the characteristics of the Temperature Input (Temperature
Probes):
WARNING
UNINTENDED EQUIPMENT OPERATION
Do not exceed any of the rated values specified in the following tables.
Failure to follow these instructions can result in death, serious injury, or
equipment damage.
Input Characteristics
Input sensor type
Pt100/Pt1000/Ni100/Ni1000
Input temperature range
Pt100/Pt1000: -200...600
°
C (-328...1112
°
F)
Ni100/Ni1000: -20...200
°
C (-4...392
°
F)
Measuring current
Pt100/Ni100
1.12 mA ± 3.5%
Pt1000/Ni1000
0.242 µA ± 3.5%
Input impedance
Typically 10 M
Ω
Sample duration time
10 ms+1 cycle time
Wiring type
2-wire or 3-wire connection configured by software
for all inputs
Conversion mode
Sigma delta type
Input filter
Low pass
Resolution temperature value
0.1
°
C
(0.18
°
F)
Detection type
Open circuit (detection on each channel)
Input tolerance*
Maximum
deviation at 25
°
C
(77
°
F) without
electromagnetic
disturbance
± 5
°
C (41
°
F)
Maximum
deviation at
25...50
°
C
(77...122
°
F)
Pt type: ± 5.6
°
C (42.08
°
F)
Ni type: ± 5.2
°
C (41.36
°
F)
Temperature drift
30 ppm/
°
C
Digital resolution
16 bits
Rejection in
differential mode
50/60 Hz
Typically 60 dB
Common mode
rejection
Typically 80 dB
Isolation Method
Photocoupler Isolation
Permitted input signal
±5 Vdc max.
Cable length
Pt100/Ni100
20
Ω
or less
Pt1000/Ni1000
200
Ω
or less
Terminal blocks
Type: 3.5 mm (0.137 in.) pitch
Terminal blocks are removable
Noise resistance - cable
Shielded cable is necessary
* Excluding errors caused by the wiring
Содержание LT series
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