GRAPHTEC GL840 User Manual page 169

Item
Reference contact compensation
accuracy
A/D converter
Temperature coefficient
Input resistance
Allowable signal source resistance
Maximum permissible input voltage
Withstand voltage
Insulation resistance
Common mode rejection ratio
Noise
Filter
•
Temperature range
Temperature
Type
range
R/S 100℃ F.S.
500℃ F.S.
2000℃ F.S.
B 500℃ F.S.
2000℃ F.S.
K/E/T/J/N 100℃ F.S.
500℃ F.S.
2000℃ F.S.
W 100℃ F.S.
500℃ F.S.
2000℃ F.S.
Pt 100℃ F.S.
500℃ F.S.
2000℃ F.S.
* Measurement accuracy does not change due to the temperature range.
Internal/External switching
Method : ΔΣ method
Resolution :16-bit (Effective resolution: About 1/40000 of the +/- range)
Gain : 0.01% of F.S./°C
Zero : 0.02% of F.S./°C
* Zero occurs at the sampling intervals of 10, 20, and 50 ms.
1MΩ ±5%
Within 300Ω
Between +/– terminals
Between input terminal/input terminal : 60 Vp-p
Between input terminal/GND
Between input terminal/input terminal : 350 Vp-p 1 minute
Between input terminal/GND
Between input terminal/GND
90 dB or more (50/60 Hz; signal source 300Ω or less)
48 dB or more (with +/– terminals shorted)
Off, 2, 5, 10, 20, 40
Filter operation is on a moving average basis.
The average value of the set sampling count is used.
If the sample interval exceeds 30 seconds, the average value of data obtained in a
sub-sample (30 seconds) is used.
CHAPTER 4 Specification
Description
Resolution Measurement Range
0.01℃ 0 to 100℃
0.05℃ 0 to 500℃
0.1℃ R : 0 to 1600℃
S : 0 to 1760℃
0.05℃ 400 to 500℃
0.1℃ 500 to 1820℃
0.01℃ -100 to 100℃
0.05℃ K/E/J/N : -200 to 500℃
T : -200 to 400℃
0.1℃ K : -200 to 1370℃
E : -200 to 800℃
T : -200 to 400℃
J : -200 to 1100℃
N : -200 to 2000℃
0.01℃ 0 to 100℃
0.05℃ 0 to 500℃
0.1℃ 0 to 2000℃
0.01℃ -100 to 100℃
0.05℃ -200 to 500℃
0.1℃ Pt100 : -200 to 850℃
JPt100/Pt1000 : -200 to 500℃
: 20mV to 2V range (60Vp-p)
5V to 100V range (110Vp-p)
: 60 Vp-p
: 350 Vp-p 1 minute
: 50MΩ or more (at 500 VDC)
4-5