Decade; Difference, Sum, And Average - Toho Electronics TRM-10C Instruction Manual

When input 4• ` 20mA, the square root computation accuracy:
ƒ Ã
Measuring 100%
ƒ Ã
Measuring 50%
ƒ Ã
Measuring 9%
ƒ Ã
Measuring 1%
If the process variable is low as above, its accuracy rating is incorrect.

(3) Decade

The accuracy rating at the decade computation is defined the logarithm of display value. Normally,
the accuracy rating is less than 1 digit and you cannot read by significant digit.

(4) Difference, Sum, and Average

The accuracy rating of Difference, Sum, and Average is as following formula.
Difference and Sum
Average
Example) When Reference channel VOLT is 00.00• ` 10.00V and Difference is • | 10.00• ` 10.00.
Reference channel accuracy rating
Difference accuracy rating • •
5e
5• i 0.2• { 0.125• j
• • • @ • @ • • • @ • @ • @ • @ • @ • @ • @ • @
100
100
5e
5• i 0.1• { 0.167• j
• • • @ • @ • • • @ • @ • @ • @ • @ • @ • @ • @
50
50
5e 5• i 0.018• { 1.39• j
• • • @ • @ • • • @ • @ • @ • @ • @ • @ • @ • @
9
9
5e
• • • @ • @ • • • @ 5• i 0.002• { 12.5 • j • @ • @ • •
1
1
: Reference channel accuracy rating ×2
: Reference channel accuracy rating
• •
• •
• •
• } 6×2 • •
107• \
ƒ Ã
is as following formula.
• @ • • 0.16% rdg
10
• @ • • 0.19% rdg
7.07
• @ • • 2.3% rdg
3
62.5% rdg
• } • i 0.3%×10.00V• { 3 digits• j
• } • i 1000×0.003• { 3• j
• } 6 digits
• } 12 digits
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