GRAPHTEC midi LOGGER GL240 - Input Unit Specifications

4-4
CHAPTER 4 Specication
Input Unit Specications
Item Description
Number of input channels 10 channels
Input terminal type M3 screw type terminals (Rectangular at washer)
Input method Photo MOS relay scanning system
All channels isolated, balanced input
Scan speed 10 ms/1 ch maximum
Measurement ranges Voltage: 20, 50, 100, 200, 500 mV; 1, 2, 5, 10, 20, 50, 100 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 1 V scaling conversion) * Use the B-530 (optional)
Measurement accuracy
(23°C ±5°C)
• When 30 minutes or more have
elapsed after power was switched on
• Sampling 1 s/10 ch
• Filter ON (10)
• GND connected
Voltage: 0.1% of F.S.
Temperature
• Thermocouple
Thermocouple
Measurement Temperature
Range (°C)
Measurement Accuracy
R/S 0 ≤ TS ≤ 100℃
100 < TS ≤ 300℃
R : 300 < TS ≤ 1600℃
S : 300 < TS ≤ 1760℃
±5.2℃
±3.0℃
± (0.05% of rdg +2.0℃)
± (0.05% of rdg +2.0℃)
B 400 ≤ TS ≤ 600℃
600 < TS ≤ 1820℃
±3.5℃
± (0.05% of rdg +2.0℃)
K - 200 ≤ TS ≤ - 100℃
-100 < TS ≤ 1370℃
± (0.05% of rdg +2.0℃)
± (0.05% of rdg +1.0℃)
E - 200 ≤ TS ≤ - 100℃
- 100 < TS ≤ 800℃
± (0.05% of rdg +2.0℃)
± (0.05% of rdg +1.0℃)
T - 200 ≤ TS ≤ - 100℃
- 100 < TS ≤ 400℃
± (0.1% o f rdg +1.5℃)
± (0.1% o f rdg +0.5℃)
J - 200 ≤ TS ≤ - 100℃
- 100 < TS ≤ 100℃
100 < TS ≤ 1100℃
±2.7℃
±1.7℃
± (0.05% of rdg +1.0℃)
N - 200 ≤ TS < 0℃
0 ≤ TS ≤ 1300℃
± (0.1% o f rdg +2.0℃)
± (0.1% o f rdg +1.0℃)
W 0 ≤ TS ≤ 2000℃ ± (0.1% o f rdg +1.5℃)
Reference contact compensation accuracy ±0.5℃
* Thermocouple diameters T, K: 0.32 φ, others: 0.65 φ
Reference contact compensation
accuracy
Internal/External switching
A/D converter Method : ΔΣ method
Resolution :16-bit (Effective resolution: About 1/40000 of the +/- range)
Temperature coefcient Gain : 0.01% of F.S./°C
Zero : 0.02% of F.S./°C
* Zero occurs at the sampling of 10, 20, and 50 ms.
Input resistance 1MΩ ±5%
Allowable signal source resistance Within 300Ω
Maximum permissible input voltage Between +/– terminals : 20mV to 1V range (60Vp-p)
2V to 100V range (110Vp-p)
Between input terminal/input terminal : 60 Vp-p
Between input terminal/GND : 60 Vp-p
Withstand voltage Between input terminal/input terminal : 350 Vp-p 1 minute
Between input terminal/GND : 350 Vp-p 1 minute
Insulation resistance Between input terminal/GND : 50MΩ or more (at 500 VDC)
Common mode rejection ratio 90 dB or more (50/60 Hz; signal source 300Ω or less)
Noise 48 dB or more (with +/– terminals shorted)
Filter Off, 2, 5, 10, 20, 40
Filter operation is on a moving average basis.
The average value of the number of set samples is used.
If the sample interval exceeds 5 seconds, the average value of data obtained in a
sub-sample (5 seconds) is used.