Installation manual

Technical data SIMDOS diaphragm metering pump
KNF Flodos BA_SIMDOS_EN_02_160044.docx
8 Translation of original operating manual
4.3. Accuracy / reproducibility
The accuracy of the metering pump is appropriately characterised
by the maximum absolute error A and the maximum relative error
B.
 max. inaccuracy ≤ A + B
Error Value
Absolute error A ≤ ± 1‰ nominal value
Relative error B ≤ ±1.9% setting value
Tab. 6: Error A and error B
Example:
SIMDOS
®
10, nominal value of 100 ml/min
For a setting of 20 ml/min, the accuracy should therefore be within
the following error limits:
Inaccuracy ≤ (±1‰ x 100ml/min) + (±1.9% x 20ml/min)
≤ (±0.1ml/min) + (±0.38ml/min)
≤ ±0.48ml/min
≈ ±2% of setting value
In constant environmental conditions and with the same hose
connection configuration, the pump achieves a reproducibility of
better than ±1%.
Greater inaccuracies may occur for fluids with a viscosity of
> 150 cSt or with a tendency to gassing out. Appropriate
adjustments may be made during calibration.
The metering pump has been calibrated to its nominal flow rate in
the factory. The specified flow rate is for water at 20°C with free
discharge flow.
The flow rate may differ from the calibrated value for some
applications, according to the medium, its viscosity, density and
temperature, pressure and installation type (e.g. cross-section
constrictions). For accurate metering, it is therefore desirable to
calibrate the metering pump (see section 7.14).
4.4. Hydraulic connections
Pump model Connection type
FEM 1.10 KT, TT Hose fitting,
i.d. 4mm / o.d. 6mm
FEM 1.10 FT Internal thread NPT 1/8
Hose fitting,
i.d. 4mm / o.d. 6mm
UFEM 1.10 KT, TT Hose fitting,
i.d. 1/8”, o.d. 1/4”
UFEM 1.10 FT Internal thread NPT 1/8
Hose fitting,
i.d. 1/8”, o.d. 1/4”
Tab. 7: Hydraulic connections
Accuracy
Reproducibility
Factory calibration
Calibration