Hach-Lange BUHLER 1027 2000 - Manual (Page 35)

Operation
Page 35 Manual Bühler 2000
FLOW-PROPORTIONAL sample extraction
According to the output signal of your flow meter either
the operating mode flow analog or flow digital can be
selected in the program settings.
.
IMPORTANT: If an analogue signal (0/4-20 mA)
is used, it is absolutely necessary to
calibrate the input prior to the first use.
FLOW ANALOG
Calibrate the analog input 0/4-20 mA
The analog input can be calibrated in „SAMPLER
SETTINGS” ->FLOW SIGNAL. Just follow the menu
instructions.
1
st
step: connect 0/4 mA and confirm
2
nd
step: connect 20 mA and confirm
3
rd
step: Calibration ok, confirm
Remark: The analogue input is already calibrated to 0-20 mA in the factory.
FLOW ANALOG
The only difference between the programming of the
flow analog mode and the flow digital mode is the
definition of the sampling interval. Point of reference is
the maximum flow at 20 mA.
Event-proportional sample extraction
When selecting this sampling mode, the sampler is waiting
for an external “event” signal, e.g. from a connected pH-
meter. A sample is extracted according to the programming
as long as the signal is present. When the signal is
deactivated the sampler waits for the next signal and then
fills the next empty bottle.
Which „event“ sample has been filled into which bottle
is recorded in the info memory.
In the event mode the sample extraction can be time or flow dependent. The
programming is effected as described before (sampling mode time, flow digital).