Specifications
5-3
Input Unit Specifications
Item Description
Number of input channels 10 channels/terminal unit (2 units mountable for a maximum of 20 channels)
Input method Photo MOS relay scanning system; all channels isolated
Scan speed 0.1s/10 ch maximum
Measurement ranges Voltage: 20, 50, 100, 500 mV; 1, 2, 5, 10, 20, 50 V; 1-5 V F.S.
Temperature
• Thermocouples: K, J, E, T, R, S, B, N, W (WRe5-26)
• Resistance temperature detector: Pt100, Jpt100
Measurement accuracy Voltage: 0.1% of F.S.
(23°C ±3°C) Temperature: Add ±1°C to the following values when the contact compensation
when 30 minutes have is internal.
elapsed after the power
was switched on
(filter On, 1-s sampling)
Reference contact ±1°C (internal/external switching)
compensation accuracy
A/D converter 16 bits (out of which 14 are internally acknowledged)
Temperature coefficient Gain: 0.01% of F.S./ °C
Input resistance 1 MΩ ±5%
Allowable signal source Within 300 Ω
resistance
Maximum permissible Between +/– terminals: 60 Vp-p
input voltage Between input terminals and casing: 60 Vp-p
Withstand voltage Between input terminals and casing: 1 minute at 350 Vp-p
Insulation resistance At least 50 MΩ (at 500 VDC)
Common mode rejection At least 90 dB (50/60 Hz; signal source 300 Ω or less)
ratio
Noise At least 48 dB (with +/– terminals shorted)
Filter On*
1
, Off (software filter)
External filter On*
2
, Off
*1 When On has been selected, the average value is 20 data samples.
*2 When the External filter is used
When the external filter has been set to ON, a hardware filter operates automatically. The filter selected depends on the
sampling speed. Please see the table below for details. Moreover, combining the hardware filter with the software filter
further increases the effectiveness of noise elimination.
Caution: At this time, since the scanning interval between channels is extended, the time lag between channels increases.
Example: When measurement is performed at the rate of 10s/10ch.
Hardware filter OFF:Scanning of channels 1 to 10 is performed in 100 ms (a time lag of 10 ms between channels)
Hardware filter ON: Scanning of channels 1 to 10 is performed in 10 s (a time lag of 1 s between channels)
Hardware filter settings:
Off: Off, Filter1: 20kHz, Filter2: 2kHz, Filter3: 200Hz
Thermocouple
Measurement Temperature Range (
°°
°°
°C)
Measurement Accuracy
R/S 0 ≤ Ts ≤ 100 ±5.2°C
100 <Ts ≤ 300 ±3.0C
300 <Ts ≤ 1760 ± (0.05% of rdg +2)°C
B 400 ≤ Ts ≤ 600 ±3.5C
600 <Ts ≤ 1820 ± (0.05% of rdg +2°C)
K/E/T –200 ≤ Ts ≤ –100 ± (0.05% of rdg +2°C)
–100 <Ts ≤ MAX ± (0.05% of rdg +1°C)
<MAX>
1370(K), 800(E), 400(T)
J –200 ≤ Ts ≤ –100 ±2.7°C
–100 <Ts ≤ 100 ±1.7°C
100 <Ts ≤ 1100 ± (0.05% of rdg +1°C)
N0 ≤ Ts ≤ 1300 ± (0.1% of rdg +1°C)
W0 ≤ Ts ≤ 2315 ± (0.1% of rdg +1.5°C)
RTD Pt100-200 to 850 ± (0.05% of F.S. +0.5°C)
JPt100-200 to 500 Pt: F.S. = 1050°C
JPt: F.S. = 700°C
Maximum No. Sampling speed
of channels 100m 200m 500m 1s 2s 5s 10s 20s 30s 1min 2min 5min 10min 20min 30min 1h
10 Off ←←Filter1 ←←Filter2 ←←Filter3 ←←←←←←
20 Off ←←Filter1 ←←Filter2 ←←Filter3 ←←←←←
40 Off ←←Filter1 ←←←Filter2 ← Filter3 ←←←←
50 Off ←←Filter1 ←←←Filter2 ← Filter3 ←←←←
100 Off ←←Filter1 ←←←Filter2 ← Filter3 ←←←
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