LT-4201TM/4301TM Hardware Manual
133
Temperature Input (Thermocouple) Characteristics
The table describes the characteristics of the Temperature Input (Thermocouple):
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
Thermocouple
Input type range
(1)
J (-200...760
°
C) (-328...1400
°
F)
K (-240...1370
°
C) (-400...2498
°
F)
R (0...1600
°
C) (32...2912
°
F)
B (200...1800
°
C) (392...3272
°
F)
S (0
°
C...1600
°
C) (32...2912
°
F)
T (-200...400
°
C) (-328...752
°
F)
E (-200...900
°
C) (-328...1652
°
F)
N (-200...1300
°
C) (-328...2372
°
F)
Input impedance
Typically 10 M
Ω
Sample duration time
10 ms+1 cycle time
Conversion mode
Sigma delta type
Digital resolution
16 bits
Input filter
Low pass
Resolution temperature value
0.1
°
C
(0.18
°
F)
(Type J)
Detection type
Open circuit (detection on each channel)
Input tolerance
Maximum deviation at
25
°
C (77
°
F) without
electromagnetic
disturbance
0.2 % of the full scale, plus standard point of
compensation precision at +/- 6
°
C.
Maximum deviation
0.28 % of full scale range
Temperature drift
30 ppm/
°
C
Input tolerance - terminal temperature
compensation
± 5
°
C (41
°
F) after 10 min.
Cold junction compensation in the
temperature range (0...50
°
C (122
°
F))
Internal cold junction error: +/- 6
°
C (42.8
°
F)
after operating 45 minutes.
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.
Warm up time
45 minutes
Terminal blocks
Type: 3.5 mm (0.137 in.) pitch
Terminal blocks are removable
Noise resistance - cable
Shielded cable is necessary
(1) Temperature measurement on PCB at terminal block for cold junction compensation.
Содержание LT series
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Страница 57: ...LT 4201TM 4301TM Hardware Manual 57 Dimensions 3 5 Inches Display Module 5 7 Inches Display Module ...
Страница 58: ...LT Installation 58 Rear Module 3 5 Inches Display Module and Rear Module ...
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Страница 136: ...Specifications 136 LT 4201TM 4301TM Modular Type Analog Internal Circuit Terminal Blocks see page 100 ...
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