Metering Rates; Delivery Capacity Depending On The Backpressure And Stroke Setting; Delivery Capacity Type 00160 / 1 Mpa (10 Bar) - Ecolab Elados EMP III E60 Mode D'emploi

14.6

Metering rates

The reproducible metering precision is about +/- 3 % at a minimum 30 % stroke distance
and under constant conditions.
Due to the characteristics of the pump, higher output can be produced until the operating
temperature is reached.
Precise metering can be achieved by taking the following points into consideration:
a) All metering capacity informations relates to measurements using water at 20°C, with a
constant power supply and warmed-up pump.
b) In order to obtain a high degree of metering precision with free flow, a pressure
maintenance valve (or metering valve) should be used, in order to produce a constant
counterpressure of at least 0.05 MPa (0.5 bar).
c) If there is pre-pressure on the suction side, the pressure difference between the suction
and the pressure sides must be at least 0.1 MPa (1 bar). The water column on the
metering pump must be protected by an appropriate valve arrangement.
NOTE
WARNING
14.7

Delivery capacity depending on the backpressure and stroke setting

Setting accuracy + 15 % - 5 % of the nominal value; all data relate to water at 20 °C and
comply with the notes in the operating instructions.
NOTE
14.7.1

Delivery capacity type 00160 / 1 MPa (10 bar)

Fig. 14.9 Delivery capacity type 00160 / 1 MPa (10 bar)
417101441_EMP_III_E60.docx
A pressure control valve or a metering value is not an absolutely hermetically sealing
shutoff device.
Metering stroke adjustment may only be performed with the pump running if the stroke
adjusting screw is released.
The tender specifications are shown at a pump frequency of 50 Hz.
Stroke length setting (%)
- 133 - Rev. 13-10.19