GRAPHTEC GL980 - Input Section

4-5
CHAPTER 4 Specication
Input section
Item Description
Number of input channels 8CH xed
Input terminal type Voltage Insulated BNC connector or M3.5 screw terminal unit
(However, it cannot input to the BNC connector of same CH and the screw terminal at the
same time.)
Temperature M3.5 screw type terminals (Rectangular at washer)
Input method All CH insulation, unbalanced input, all CH simultaneous sampling
Fastest Sampling interval 1 μs
Measurement
ranges
Voltage 20, 50, 100, 200, 500 mV;
1, 2, 5, 10, 20, 50, 100, 200, 500 V; 1-5 V F.S.
Temperature Thermocouples : K, J, E, T, R, S, B, N, W (WRe5-26)
Humidity 0 to 100% (Voltage 0 to 1V scaling conversion)
* B-530 (option) used
Root mean
square value
10, 25, 50, 100, 250, 500 mVrms
1, 2.5, 5, 10, 25, 50, 100, 250 Vrms F.S.
* Crest Factor 2 or less
* Measurable frequency: 20 to 10 kHz
* The true effective value (RMS) of AC + DC is measured
* The function to automatically obtain the effective value (RMS) and the operation cross
value from the currently measured value is provided
Measurement accuracy
(23°C ±5°C)
• When 30 minutes or more have
• GND connected
• Vertical placement
• Filter : Line
(Voltage, Temperature)
•
Voltage
±0.25% of F.S.
•
Thermocouple
Thermocouple
Measurement Temperature
Range (°C)
Measurement Accuracy
R/S 0 ≤ TS ≤ 100℃
100 < TS ≤ 300℃
R : 300 < TS ≤ 1600℃
S : 300 < TS ≤ 1760℃
±7.0℃
±5.0℃
± (0.05% of rdg +3.0℃)
± (0.05% of rdg +3.0℃)
B 400 ≤ TS ≤ 600℃
600 < TS ≤ 1820℃
±5.5℃
± (0.05% of rdg +3.0℃)
K - 200 ≤ TS ≤ - 100℃
-100 < TS ≤ 1370℃
± (0.05% of rdg +3.0℃)
± (0.05% of rdg +2.0℃)
E - 200 ≤ TS ≤ - 100℃
- 100 < TS ≤ 800℃
± (0.05% of rdg +3.0℃)
± (0.05% of rdg +2.0℃)
T - 200 ≤ TS ≤ - 100℃
- 100 < TS ≤ 400℃
± (0.1% o f rdg +2.5℃)
± (0.1% o f rdg +1.5℃)
J - 200 ≤ TS ≤ - 100℃
- 100 < TS ≤ 100℃
100 < TS ≤ 1100℃
±3.7℃
±2.7℃
± (0.05% of rdg +2.0℃)
N - 200 ≤ TS < 0℃
0 ≤ TS ≤ 1300℃
± (0.1% o f rdg +3.0℃)
± (0.1% o f rdg +2.0℃)
W 0 ≤ TS ≤ 2315℃ ± (0.1% o f rdg +2.5℃)
Reference contact compensation accuracy ±1.0℃
* Thermocouple diameters T - K: 0.32 φ, others: 0.65 φ
•
Root mean square value
±1.5% of F.S. (Average value) (Sine wave, 20 to 10 kHz)
Reference contact compensation
accuracy
Internal/External switching
Burnout detection Detectable in dedicated mode (Not detectable during capturing)
A/D converter 16-bit (Effective resolution: Approx. 1/40000 of the +/- range)
Temperature coefcient Gain : 0.01% of F.S./°C
Zero : 0.02% of F.S./°C
Input resistance 1MΩ ±5%
Allowable signal source
resistance
Within 1 kΩ
Maximum permissible input
voltage
Between each input (+) terminal and each input (-) terminal: 20 mV to 2 V ±30 V
5 V to 500 V ±500 V
Between each input (-) terminal and each input (-) terminal: 60Vp-p
Between each input (-) terminal and GND terminal: 60Vp-p
Withstand voltage Between each input (-) terminal and each input (-) terminal : 1000Vp-p 1 minute
Between each input (-) terminal and GND terminal : 1000Vp-p 1 minute
Insulation resistance Between Input Ch and GND terminal: 50MΩ or more (At 500 VDC)
Common mode rejection ratio 90 dB or more (50/60 Hz; signal source 300Ω or less)