11.2.2 The Accuracy at the Computation
(1) Scaling
The accuracy rating at the scaling is as following formula.
Scaling accuracy (digits) = Range accuracy rating (digits) × Scaling factor +2 digits
But, Scaling factor =
Example 1) When VOLT range is -1.000~1.000V and Scaling range is 0.00~100.00.
Range accuracy rating = 0.1%×1.000V+3 digits
(Input +1.000V)
Scaling factor
Therefore, Scaling accuracy
Analog recording accuracy
Example 2) When Type K is 0.0~200.0℃ and Scaling is 0.00~200.00.
Range accuracy rating =0.15%×200.0+0.3℃
(Input 200℃)
Scaling factor
Therefore, Scaling accuracy
(2) Square Root Computation
The square root computation is as following formula.
= 10
Display value
Display value accuracy rating:
Process variable: x (convert into %).
= 10
Display value
Therefore, Display value accuracy
Scaling span (digits)
Measurement range span (digits)
= 4 digits
10000-0
=
1000-(-1000)
= ±(4×5+2)
= ±22 digits
= ± 4+{1000-(-1000)}×
= ±10 digits
= ±0.01V
=0.6℃
=6 digits
20000-0
=
=10
2000-0
=±(6×10+2)
=±62 digits
=±0.62℃
Process variable
ε
, Process variable accuracy: e, and
≒ 10
x±e
x
5e
ε
=
x
―114―
=5
0.3
100
10e
±
2 x
HXPRM10mnCT001E
Need help?
Do you have a question about the TRM-10C and is the answer not in the manual?