Figure 4.18 Idle Count (Ic) Command Example - Honeywell PPT User Manual

Pressure
(psi)
10.00
9.00
8.00
Deadband
7.00
(±0.4 psi)
6.00
5.00
4.00
3.00
2.00
1.
0
Figure 4.17b—Deadband and Sensitivity (DS) Command Examples
Pressure
(psi)
5.24
5.20
5.16
5.12
5.08
5.04
5.00
3
4.96
2
1
4.92
1.
0
Deadband - Spread
PPT pressure output
Actual pressure
3.0
Idle Count
7 8
4 5 6
2.
0
Figure 4.18—Idle Count (IC) Command Example
I = M5
S2 = 0
IC = 0
Setting DS=40 sets the deadband to
±40 x 0.005% FS = ±0.20%FS.
Then setting DS=S1 selects the spread
deadband option with a 10x multiplier.
For a 20 psi full scale device, this results
in a ±0.40 psi deadband window.
Time (sec)
5 .0
IC = 11 (skip 11)
IC = 4 (skip 4)
IC = 2 (skip 2)
IC = 0 (skip none)
1
9 11 2
10
3.
Time (sec)
0
2 3
DS=40S1
S5 = 0
RR = 0 OP=A
I = M2
RR = 0
S2 = 0
S5 = 0
OP=A
Integration time
PPT pressure output
Actual pressure