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All Rights Reserved. Copyright © 2000, Yokogawa Electric Corporation
TI 04L01A01-02E
2.2
Input Unit
2.2.1
Input Specifications
Number of inputs and measurement interval
Model
Maximum number of inputs
Measurement Period
DX102
2
DX104
4
Select from 125 ms or 250 ms
DX106
6
DX100
DX112
12
Select from 1 s or 2 s
2 s when the A/D integration time is set as any value other
than 100 ms
DX204
4
DX208
8
Select from 125 ms or 250 ms
DX210
10
DX220
20
DX200
DX230
30
Select from 1 s or 2 s
2 s when the A/D integration time is set as any value other
than 100 ms
Input Types
DCV
: DC voltage
TC
: Thermocouple
RTD
: Resistance temperature detector
DI
: ON/OFF (contact) input
DCA
: DC current (using an external shunt resistor. (10, 100, 250 ohm))
Measuring range
DCV
: 20 mV, 60 mV, 200 mV, 2 V, 6 V, 20 V ranges
TC
: R, S, B, K, E, J, T, N:IEC584-1 (1995), DIN IEC584,JIS C1602-1995
W
: W-5% Rd/W-26% Rd (Hoskins Mfg. Co.), ASTM E988
L
: Fe-CuNi,DIN43710
U
: Cu-CuNi, DIN43710
RTD
: Pt100: JIS C1604-1997, IEC 751-1995, DIN IEC751-1996
JPt100 : JIS C1604-1989, JIS C1606-1989
DI
: For voltage input; detecting
off
when less than 2.4V,
and
on
when 2.4V or greater
For contact input; on/off contact
A/D resolution
: Equivalent to 14 bit
A/D integration time
Model
A/D integration time
DX102
DX104
20 ms (50 Hz), 16.7 ms (60 Hz),
AUTO (automatically selected from 20 ms or 16.7 ms depending on the frequency of the power supply)
DX106
DX100
DX112
20 ms (50 Hz), 16.7 ms (60 Hz), 100 ms (50/60 Hz),
AUTO (automatically selected from 20 ms or 16.7 ms depending on the frequency of the power supply)
DX204
DX208
20 ms (50 Hz), 16.7 ms (60 Hz),
AUTO (automatically selected from 20 ms or 16.7 ms depending on the frequency of the power supply)
DX210
DX220
DX200
DX230
20 ms (50 Hz), 16.7 ms (60 Hz), 100 ms (50/60 Hz),
AUTO (automatically selected from 20 ms or 16.7 ms depending on the frequency of the power supply)
Functions
TC
Burnout
: Forcibly clamps the measured value reading to zero or full scale when
the thermocouple burns out.
Off, up, or down can be selected for each channel.
RJC
: Select whether or not to use the internal compensation circuit to carry
out reference junction compensation (Internal/External) for
thermocouple(TC) inputs for each channel.