Minebea CSA-528, Инструкция по эксплуатации

Страница: 22 / 34

12 12
Input resistance value
Resistance by which the zero adjustment of
±
0.25 mV/V (
±
500
μ ε
) or more is set can
be requested by the undermentioned formula.
R
Z
= Resistance for cancellation kΩ
E
T
= Initial load（tare）mV/V 1
K = 146 E
T
X K
Resistance value (Rz)
Input conversion strain When bridge resistance is 350Ω
m ε mV/V Calculated value kΩ
Approximate value kΩ
(E96)
200 0.1 68.5 68.1
400 0.2 34.2 34.0
600 0.3 22.8 22.6
800 0.4 17.1 16.9
1000 0.5 13.7 13.7
1200 0.6 11.4 11.5
1400 0.7 9.78 9.76
1600 0.8 8.56 8.66
1800 0.9 7.61 7.68
2000 1.0 6.85 6.81
2200 1.1 6.23 6.19
2400 1.2 5.71 5.62
2600 1.3 5.27 5.23
2800 1.4 4.89 4.87
3000 1.5 4.57 4.53
3200 1.6 4.28 4.32
3400 1.7 4.03 4.02
3600 1.8 3.81 3.83
3800 1.9 3.60 3.60
4000 2.0 3.42 3.40
4200 2.1 3.26 3.24
4400 2.2 3.11 3.09
4600 2.3 2.98 2.94
4800 2.4 2.85 2.87
5000 2.5 2.74 2.74
3-3-2.Initial load checking
Please confirm it by the following procedure when an initial load (tare weight) is uncertain.
① Please prepare the digital multimeter which can read 0.1mV by DC range.
② The voltage (power supply voltage of the bridge) between A and C of this unit (C is minus) is
measured.
③ The voltage (output voltage of the bridge) between D and B of this unit (B is minus) is
measured.
④ The input conversion value of an initial load is obtained by the undermentioned formula.
If the obtained value is "＋ polarity", an initial load is plus, and if "－ polarity", an initial
load is minuses. Mount the resistance according to the paragraph 3-3-1.
R
Z
=
X 10
3