14
Timer-based batch control
Applies to DME
The pump is dosing the set quantity in batches at
maximum capacity or the set capacity limitation.
The time until the first dosing (NX) and the following
sequences (IN) can be set in minutes, hours and days.
The maximum time limit is 9 days, 23 hours and 59
minutes (9:23:59).
The lowest acceptable value is one minute. IN must be
higher than the time required to perform one batch. If IN
is lower than the time required, the next batch will be
ignored. In case of supply failure, the set dosing quan-
tity, the IN time and the remaining NX time are stored.
When the supply is reconnected, the pump will start up
with the NX time at the time of the supply failure. This
way the timer cycle will continue, but it will be delayed
according to the time of the supply failure. This feature
is not available on variant "B" pumps.
Pulse-based batch control
Applies to DME
The pump is dosing the set quantity in batches at
maximum capacity or the set capacity limitation. The
quantity is dosed every time the pump receives an
external pulse. If the pump receives new pulses before
the batch is completed, these pulses will be ignored.
However the manually control DME B cannot be
controlled externally.
Setting range (applies to DME only)
:
Anti-cavitation (2 to 48)
Applies to DME
When this function is selected, the pump extends and
smooths its suction stroke, resulting in softer priming.
The anti-cavitation function is used:
• when pumping liquids of high viscosity
• when pumping degassing liquids
• in the case of a long suction tube and
• in the case of a high suction lift.
The maximum capacity is reduced when this function is
selected, see table below.
TM01 8942 0900
Quantity pr. batch
NX
IN
Timer-based and pulse-based batch control
DME 2:
0.23 ml/batch to 5 l/batch
0.00006 G/batch to 1.32 G/batch
DME 8:
0.69 ml/batch to 15 l/batch
0.00018 G/batch to 3.96 G/batch
DME 12:
1.11 ml/batch to 24 l/batch
0.00029 G/batch to 6.34 G/batch
DME 19:
2.04 ml/batch to 37 l/batch
0.00053 G/batch to 9.77 G/batch
DME 48:
5.3 ml/batch to 96 l/batch
0.0014 G/batch to 25.4 G/batch
DME 60:
6.25 ml/batch to 120 l/batch
0.0017 G/batch to 31.7 G/batch
DME 150:
15.6 ml/batch to 300 l/batch
0.0041 G/batch to 79.3 G/batch
DME 375:
39.1 ml/batch to 750 l/batch
0.01 G/batch to 198.1 G/batch
DME 940:
97.9 ml/batch to 1880 l/batch.
0.025 G/batch to 496.7 G/batch
TM01 8947 0900
Maximum capacity with anti-cavitation function
DME 2 0.475 GPH 1.8 l/h
DME 8 1.48 GPH 5.6 l/h
DME 12 2.38 GPH 9 l/h
DME 19 14.5 GPH 14.5 l/h
DME 48 9.77 GPH 37 l/h
Pulse
Pulse
Quantity pr. batch
t
Functions
DME and DMS
Dm123.book Page 14 Tuesday, February 8, 2005 8:24 AM
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