GRAPHTEC GL900 - Input Unit Specifications

4-4
Specifications
Input Unit Specifications
Type Measurement temperature range Measurement accuracy
R/S 0 ≤ TS ≤ 100 ±7.0°C
100 < TS ≤ 300 ±5.0°C
R:300 < TS ≤ 1600 ±(0.05% of rdg +3.0°C)
S:300 < TS ≤ 1760 ±(0.05% of rdg +3.0°C)
B 400 ≤ TS ≤ 600 ±5.5°C
600 < TS ≤ 1820 ±(0.05% of rdg +3.0°C)
K -200 ≤ TS ≤ -100 ±(0.05% of rdg +3.0°C)
-100 < TS ≤ 1370 ±(0.05% of rdg +2.0°C)
E -200 ≤ TS ≤ -100 ±(0.05% of rdg +3.0°C)
-100 < TS ≤ 800 ±(0.05% of rdg +2.0°C)
T -200 ≤ TS ≤ -100 ±(0.1% of rdg +2.5°C)
-100 < TS ≤ 400 ±(0.1% of rdg +1.5°C)
J -200 ≤ TS ≤ -100 ±3.7°C
-100 < TS ≤ 100 ±2.7°C
100 < TS ≤ 1100 ±(0.05% of rdg +2.0°C)
N0 ≤ TS ≤ 1300 ±(0.1% of rdg +2.0°C)
W0 ≤ TS ≤ 2315 ±(0.1% of rdg +2.5°C)
Reference contact compensation accuracy ±1.0°C
*1: Thermocouple diameters T: 0.32 φ , others: 0.65 φ ”
Item Description
Number of input channels Fixed to 8 channels
Input terminal Voltage BNC connector
type Temperature M3 screw type terminal board
Input method All channels isolated
Imbalanced input
Simultaneous sampling of all channels
Maximum sampling speed 10 μs
Measurement Voltage 20 m, 50 m, 100 m, 200 m, 500 m;
ranges 1, 2, 5, 10, 20, 50, 100, 200, 500 V; F.S., 1-5 V F.S.
Temperature Thermocouples : K, J, E, T, R, S, B, N, W (WRe5-26)
Humidity 0 to 100% (voltage 0 V to 1 V scaling conversion) * with B-530 (option)
Measurement accuracy*
1
• Voltage
(23°C±5°C) ±0.25% of F.S.
• When 30 minutes or more • Thermocouple
have elapsed after power
was switched on
• Filter Line
• GND connected
• Standing upright
• When the measured value
is Average
Reference contact Internal/External switching
compensation accuracy
A/D converter 16 bits (out of which 14 bits are internally acknowledged)
Temperature coefficient Gain : 0.01% of F.S./°C
Zero : 0.02% of F.S./°C
Input resistance 1 MΩ±5%
Allowable signal source Within 1 kW
resistance
Maximum permissible Between input channel + and - terminals : 20 mv to 1 V → 30 Vp-p
input voltage : 2 V to 500 V → 500 Vp-p
Between input channel terminals : 60 Vp-p
Between input channel terminal and GND terminal : 60 Vp-p
Withstand voltage Between input channel terminal and GND terminal : 1 minute at 1000 Vp-p
Between input channel terminals : 1 minute at 1000 Vp-p
Insulation resistance Between input channel terminal and GND terminal : At least 50 MΩ (at 500 VDC)
Common mode rejection ratio At least 90 dB (50/60 Hz; signal source 300 Ω or less)
S/N (Noise) 20 mV range : At least -40 dB
Other range : At least -50 dB
Frequency response DC to 20 KHz (+1/-4 dB)
Filter OFF, Line, 5Hz, 50Hz, 500Hz
(Attenuation) -3 dB / 6 dB oct