Unipulse F701-P, Operation Manual

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102
11 SUPPLEMENTS
102
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Chapter
11
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Calibration error display
(Calibration error)
The initial tare exceeds the zero calibration range of the F701-P. Check the load cell for
unnecessary load.
If "
" is displayed under a normal load, there is a need to connect resistance between
the +EXC and -SIG terminals of the load cell and redo zero calibration after shifting the zero point.
The relationships between connected resistance values and input signals are shown below.
- The numerical values in this table assume that one 350Ω load cell is used.
- The temperature coefficient of the resistance connected here directly affects the accuracy of the
indicator.
Use resistance of 50ppm/ C or higher (approx. 5ppm/ C is recommended).
Resistance value Input conversion strain
Approximate value Calculated value μ-STRAIN mV/V
875 kΩ 866 kΩ
200 0.1
437 kΩ 442 kΩ
400 0.2
291 kΩ 294 kΩ
600 0.3
219 kΩ 221 kΩ
800 0.4
175 kΩ 174 kΩ
1000 0.5
146 kΩ 147 kΩ
1200 0.6
125 kΩ 124 kΩ
1400 0.7
109 kΩ 110 kΩ
1600 0.8
97 kΩ 97.6 kΩ
1800 0.9
87.3 kΩ 86.6 kΩ
2000 1.0
79.4 kΩ 78.7 kΩ
2200 1.1
72.7 kΩ 73.2 kΩ
2400 1.2
67.1 kΩ 66.5 kΩ
2600 1.3
62.3 kΩ 61.9 kΩ
2800 1.4
58.2 kΩ 57.6 kΩ
3000 1.5
54.5 kΩ 54.9 kΩ
3200 1.6
51.3 kΩ 51.1 kΩ
3400 1.7
48.4 kΩ 48.7 kΩ
3600 1.8
45.9 kΩ 46.4 kΩ
3800 1.9
43.6 kΩ 43.2 kΩ
4000 2.0
41.5 kΩ 41.2 kΩ
4200 2.1
39.6 kΩ 39.2 kΩ
4400 2.2
37.9 kΩ 38.3 kΩ
4600 2.3
36.3 kΩ 36.5 kΩ
4800 2.4
34.8 kΩ 34.8 kΩ
5000 2.5
Connect resistance
bEXC and -SIG.
+EXC
+SIG
-EXC
-SIG