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5.3
R
ELAY
O
UTPUT
P13: - - - a Relay function
a
Relay function
Also set
0
DIFFERENTIAL LEVEL CONTROL
(Hysteresis control)
Relay is energised if the measured or calculated value
exceeds the value set in P14 Relay is de-energised if
the measured or calculated value descends under the
value set in P15.
R
e
la
y
E
n
e
rg
ise
d
:
D
e
-e
n
e
rg
ise
d
:
C
1
C
2
T
im
e
P
1
4
P
1
5
L
e
ve
l
P14, P15
There is a need to set
(in level min 20 mm) hysteresis
between P14 and P15
P14 > P15
–
normal operation
P14 < P15
–
inverted operation
1
Relay is energised in case of Echo Loss
-
2
Relay is de-energised in case of Echo Loss
-
3
COUNTER
Used for open channel flow metering.
A 140 msec pulse is generated every 1, 10, 100,
1.000 or 10.000 m
3
according to P16.
R
e
la
y
1
0
m
3
E
n
e
rg
is
e
d
:
D
e
-e
n
e
rg
is
e
d
:
C
1
C
2
1
4
0
m
s
T
O
T
T
im
e
1
0
m
(P
1
6
)
3
2
0
m
3
P16= 0: 1m
3
P16= 1: 10 m
3
P16= 2: 100 m
3
P16= 3: 1.000 m
3
P16= 4: 10.000 m
3
In de-
energised state of the device the „C1” circuit is closed.
The „Relay” LED is on when the „C2” circuit is closed.
FACTORY DEFAULT:
P13 = 2
P14: - - - - Relay parameter
–
Operating value
P15: - - - - Relay parameter
–
Releasing value
P16: - - - - Relay parameter
–
Pulse rate P13(3)
FACTORY DEFAULT:
P14 = 0, P15 = 0
,
P16 = 0
5.4
D
IGITAL OUTPUT
P19: - - - a HART polling address (only HART capable types)
The polling address can be set between 0 and 15. For a single instrument the polling address is 0 and the output is 4
–
20 mA (analogue output).
If multiple units are used in HART Multidrop mode (max. 15 pcs) the polling addresses should differ from 0 (1
–
15), in this case the output
current will be fixed at 4 mA.
