Xylem Flow Converter 713 - Manual (Page 16)

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previously keyed in quantities. The flow can only be set
in whole numbered m 3 /h or l/s. The highest Q(h) gives
the measuring field.
3.9.1 Optional formula enter exponent
The exponent in the flow formula (Q(h)=K*h x ) is keyed
in. Q is the flow in m 3 /h, h presents the level in meters,
K is a factor between 1 and 9999 and x is the exponent
which is between 1.000 and .500, K and x is unitless.
Key in with the arrow keys. Double arrow runs the value
fast with 0.1 steps. Single arrow runs the value slowly
with 0.001 steps.
3.9.2 Optional formula enter factor
The factor K in the flow formula (Q(h)=K*h x ) is keyed in.
Key in with the arrow keys. Double arrow runs the value
fast with 100 steps. Single arrow runs the value slowly
with 1 steps. The factor can be adjusted in the area 1
- 99999.
4.0 Programming of digital outputs
4.1 Enter digital output
Configuring of the 5 digital outputs. Select with the ar-
row keys which digital output to program, confirm with
ENTER.
Digital output 5 (DO5) is standard an output for an exter-
nal counter. DO5 can be ordered as an option for a relay
output.
4.2 Select function for DO
For digital output 1-4 select with arrow keys between
8 various functions: counter output, sampler, flow>0%,
flow high, flow low, alarm 24 hour volume, alarm 1 hour
volume and alarm sensor error. The choice is confirmed
with ENTER.
Counter output: After a programmed number of m 3 ,
the output is activated for an
external counter.
Sampler: After a programmed number of m 3 ,
the output is activated for start up
of an externally connected
sampler, or to a possibly connected
chemical dosing.
Flow>0%: Signal to indicate that flow is
greater than 0, is applied i.e. when
measuring emergency stormflow.
Alarm flow high: Activated if flow exceeds an
adjusted value.
Alarm flow low: Activated if flow drops below an
adjusted value.
4 hour volume: Activated is 4hour volume alarm
exceeds a programmed value.
Hour volume: Activated if hourly volume exceeds
a programmed value.
Sensor error: Activated at sensor error.
Out of action: Is chosen when the output is not
applied.
4.3 Alarm flow high
The limit for flow high is keyed in with the arrow keys.
Double arrow runs the value fast with 10cm steps, single
arrow runs the value slowly with 0,1 cm steps. The area
is 0.0 to (maximum flow+10%).
4.4 Alarm flow low
The limit for flow low is keyed in with the arrow keys.
The area is 0.0 to (maximum flow+10%).
4.5 Alarm 24 HR volume
The limit for max. 4 hour volume is keyed in with the
arrow keys.
4.6 Alarm 1 HR volume
The limit for max. hourly volume is keyed in with the ar-
row keys.
4.7 Enter signal delay
The time a limit for an alarm can be exceeded before a
DO is activated, is set. The format is as follows - hours:
minutes. The maximum delay is 99 hours and 59 min-
utes. The delay is working for chamge from not active to
active mode as well as change from active to not active
mode.
4.8 Enter volume between pulses
The volume in m 3 that passes between each time a pulse is
sent to a DO is keyed in.
4.9 Digital output ON-time
In this menu the ON-time for the DO is keyed in. Key in
with arrow keys. The area is (0,1-30 sec).
4.10 Digital output NC/NO
In this menu the relay function for digital output is keyed
in, as Normally Open (NO) or Normally Closed (NC).
Select with arrow keys, confirm with ENTER.
5.0 Programming of analog output
In this menu the mA-output of the flow converter is
adjusted.
5.1 Analog output 0-20 / 4-20 mA
Here you select between mA-output 0-0 or 4-0 mA.
Select with arrow keys, confirm with ENTER. The output
follows the flow at max flow, keyed in menu 2.5 gener-
ated 0mA.