47
ICE CFA3240A-3300A-3360A I&O Manual 10/2023 Rev.11
12
Doc.-no.: DPC200_01_EBM_UK Issue: 12/2015
OPERATION
5.5 Adjustable parameters
Parameter Selection or parameter range Default setting
Unit Metric or imperial metric
Operating
mode:
Measuring mode or control mode measuring mode
Parameter
Differential pressure ΔP [Pa or InH2O]
Volume flow V [m
3
/h or cfm]
differential
pressure ΔP [Pa]
K-factor: K = 70
Limit values:
Differential pressure from 0 % up to 100 % of measuring range.
Volume flow from 5 % up to 100 % of measuring range, k-factor is
considered.
OFF
Nominal
values
(setpoints):
Differential pressure from 0 % up to 100 % of measuring range.
Volume flow from 5 % up to 100 % of measuring range, k-factor is
considered.
Set 1: 75 %
Set 2: 25 %
Output
voltage:
0…10 V DC U
out
= 10 V DC
P-gain: 0...1000 P = 50
I-gain: 0…100 I = 3.15
Control
characteri-
stic:
positive / heating
Ifselectedparameter=volumeow
than follows the additional input for the k-factor
fan k-factor
k = 70
Button T1: reset value
Button T2: set value
Button T1: conrm value, display ashes once
Press button T2 to get to the next menu item
Volume flow calculation according to: V = k · √Δp
with:
Volume flow calculation up to 65,500 m
3
/h (38,514 cfm)
In measuring or control mode
Maximum volume flow (V
max
)
Measuring range: 50 Pa, k=1000
Measuring range: 500 Pa, k=1000
Measuring range: 1000 Pa, k=1000
Measuring range: 2000 Pa, k=1000
Measuring range: 4000 Pa, k=1000
V = Volume flow in m
3
/h or cfm
k = flow factor, adjustment range: 1...1000 measuring range
up to 4000 Pa
Δp = differential pressure in Pa or InH20
V
max
= 7,071 m
3
/h; (4,157 cfm)
V
max
= 22,360 m
3
/h; (13,147 cfm)
V
max
= 31,622 m
3
/h; (18,593 cfm)
V
max
= 44,721 m
3
/h; (26,295 cfm)
V
max
= 63,245 m
3
/h; (37,188 cfm)
positive/(heating):
negative/(cooling):
Control deviation = set value – actual value
The output increases when set value > actual value.
Control deviation = actual value – set value
The output increases when actual value > set value
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