GRAPHTEC GL820 - Page 55

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CHAPTER 3 Settings and Measurement
<Temperature Ranges>
Range Maximum SPAN Minimum SPAN (p-p) Measurement
Range
Minimum Resolution
K -270 to +2000°C 50°C -200 to +1370°C
0.1°C
J -270 to +2000°C 50°C -200 to +1100°C
T -270 to +2000°C 50°C -200 to +400°C
R -270 to +2000°C 50°C 0 to +1600°C
E -270 to +2000°C 50°C -200 to +800°C
B -270 to +2000°C 50°C +600 to +1820°C
S -270 to +2000°C 50°C 0 to +1760°C
N -270 to +2000°C 50°C 0 to +1300°C
W -270 to +2000°C 50°C 0 to +2000°C
PT100 -270 to +2000°C 50°C -200 to +850°C
JPt100 -270 to +2000°C 50°C -200 to +500°C
Pt1000 -270 to +2000°C 50°C -200 to +500°C
<Humidity Range>
Range Maximum SPAN Minimum SPAN
(p-p)
Minimum
Resolution
0 to +110% 1.0% 0.1%
(1)-3 Filter
Selection item Description
Off No moving average is calculated.
2 A moving average is calculated twice per sampling interval.
5 A moving average is calculated 5 times per sampling interval.
10 A moving average is calculated 10 times per sampling interval.
20 A moving average is calculated 20 times per sampling interval.
40 A moving average is calculated 40 times per sampling interval.
<Filter processing>
Filter processing performed on the GL820 is the moving average shown in the following figure.
D
n
n-1
n-2
n-3
n-4
n-5
If the filter setting is 5,
D=(n-4 + n-3 + n-1 + n)÷5
If the sample interval exceeds 30 seconds, the average value of data obtained in a sub-sample (30
seconds) is used.