Ultrasonic flow meter
SU2020 SU2021 SU2621 SU8020 SU8021 SU8621 SU9020 SU9021
31
MEW
MAW
AEP
ASP
-120
Q
[% MEW]
[°C]
T
-40
-20
100
120 130
-130
-50
[°F]
-40
-4
212
248 266
-58
120
100
-100
0
130
4
3,8
3,5
FOU=OFF
20
20,5
21,5
[mA]
FOU=On
1
2
6
cr.UL UL
OL cr.OL
3
4
5
Fig. 21: Characteristics of the analogue output according to the standard IEC 60947-5-7
1:
Analogue signal
MAW:
Initial value of the measuring range
2:
Measured value
MEW:
Final value of the measuring range
3:
Detection zone
ASP:
Analogue start point
4:
Display range
AEP:
Analogue end point
5:
Measuring range
UL:
Under limit
6:
Scaled measuring range
cr.UL:
Critical under limit
Q:
Flow
OL:
Over limit
T:
Temperature
Cr.OL:
Critical over limit
A negative flow value means flow against the flow direction set under [Fdir]. See
10.3.4.1 Parameter setting via unit keys: Analogue signal
ü
Standard unit of measurement is selected: [EF] > [CFG] > [uni.x].
u
Go to [EF] > [OUT2] to configure output OUT2.
u
Select [SEL2] and set the process value. [FLOW] or [TEMP].
u
Select [ou2] and set the function: [I] (analogue signal 4...20 mA.).
u
Select [ASP2] and set the measurement value at which the output signal is 4 mA.
u
Select [AEP2] and set the measurement value at which the output signal is 20 mA.
The parameter settings [ASP] and [AEP] can be changed subsequently in the main menu.
10.3.4.2 Parameter setting via IO-Link: Analogue signal
ü
Standard unit of measurement is selected: [Parameter] > [Basic settings] > [uni.x].
u
Go to [Parameter] > [Output configuration].
u
Select [SEL2] and set the process value. [FLOW] or [TEMP].
u
Select [ou2] and set the function: [I] (analogue signal 4...20 mA.).
u
Select [Parameter] > [Analog output 2].
u
Call up [flow] or [temperature].
u
Select [ASP2_FLOW] or [ASP2_TEMP] and set the measurement value at which the output signal
is 4 mA.
u
Select [AEP2_FLOW] or [AEP2_TEMP] and set the measurement value at which the output signal
is 20 mA.
