Yokogawa DR240 - Manual (Page 228)

14-1 IM DR231-01E
Specifications
14
14.1 Specifications of DR130/DR231/DR241 (Style
S8)
DR130/DR231/DR241 Modules (specified at time of order, and cannot be increased at a later
time)
Input module: universal (DC voltage, RTD, TC, DI), DCV/TC/DI...(dedicated input)
Alarm module: 10ch (make contact)
Communication interface module: selectable from GP-IB or RS-232-C
DI/DO module: alarm 2-point output (transfer contact), fail output, chart-end output, input signal
for remote control
Max. number of modules : DR130: 4
DR231/241: 6
alarm module in combination with /A4 option: only 1
communication output module in combination with /C ■ option: only 1
DI/DO module in combination with /R1 option: only 1
Input
Input type
Universal, or DCV/TC/DI input.
Number of channels/terminal type
DR130 : Selectable from 10/20 ch, and screw/clamp terminal.
DR231/DR241 : Selectable from 10/20/30ch, and screw/clamp terminal.
Input method
floating unbalanced input, each channel mutually isolated (channel independent)
The RTD range has a common potential (terminal b)
A/D resolution
±20000
A/D integration time
20ms (50Hz), 16.7ms (60Hz), 100ms (10Hz) selectable or automatically switched between 50/
60Hz (Except, auto switch does not function on the DC power supply model.)
Minimum measurement interval
DR130
number
of channels 20ms/16.7ms
(50Hz/60Hz)
4s
5s
3s
4s
12s
15s
10
20
Low-pass filter OFF Low-pass filter ON Filter ON/OFF
A/D
integration
time
2s
2s
100ms
(10Hz)
20ms/16.7ms
(50Hz/60Hz)
100ms
(10Hz)
DR231/DR241
number
of channels 20ms/16.7ms
(50Hz/60Hz)
4s
5s
6s
3s
4s
4s
12s
15s
20s
10
20
30
Low-pass filter OFF Low-pass filter ON Filter ON/OFF
A/D
integration
time
0.5s*
2s
2s
*: 2s if the power monitor module is installed
100ms
(10Hz)
20ms/16.7ms
(50Hz/60Hz)
100ms
(10Hz)
Reference junction compensation
Switchable internally or externally for each channel.
Compensation accuracy for the reference junction
(measured at 0
°C, where the input terminals are balanced)
Type R, S, B, W :
±1°C
Type K, J, E, T, N, L, U : ±0.5°C
Maximum allowable input voltage
2V DC or lower range, TC, RTD, DI (CONT) :
±10V DC
6V DC or greater range, DI (LEVEL) :
±60V DC
Normal mode voltage
DC voltage, TC : 1.2 times the rated range or less (at peak value, including 50 or 60Hz signal
component)
RTD : 50 mV or lower (at peak value)
Normal mode rejection ratio
40dB or greater (50/60Hz ±0.1%)