* - Suction lift with a filled suction line and filled liquid end.
** - Priming lift with clean and moist valves. Priming lift at 100 % stroke
length and free outlet or opened bleed valve.
*** - The given performance data represents guaranteed minimum
values, calculated using water as the medium at room temperature.
1
- The connector size is 6 mm for the SST material version
2
- SST material version
delta
®
metering pumps with dosing heads for higher-viscosity media (HV)
have a 10-20 %
lower capacity and are not self-priming. Connection
G 3/4-DN 10 with tube nozzle d16-DN10.
16.2 Accuracy
16.2.1 Standard liquid ends
Data Value Unit
Product scatter -5 ... 10 % *
Metering reproducibility ±2 % **
* - with max. stroke length and max. operating pressure for all material
versions
** - under constant conditions and at least 30 % stroke length
The delta
®
ensures uniform conditions provided the stroke velocities are
correctly adjusted and, if "Compensation" is set to "on" (see Chapter
"Dosing").
16.3 Viscosity
The metering behaviour of the pump can be matched to the viscosity of
the feed chemical.
Viscosity in mPa "Dosing" setting Suction stroke
slowing
Max. stroke rate Remarks
0...50 "normal" none 200
50...200 "HV1" slight 160
200...500 "HV2" medium 120 for valves with springs
500...1000 "HV3" Maximum 80 for valves with springs
For the adjustment for slowing the suction stroke dependent upon the feed
chemical viscosity - see the "Adjustment" chapter.
Technical data
86
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