Burkert Type 8619 - Manual (Page 13)

11
Description
function Availability formula example for usage
Time dosing Optional (see
chap. 8.10.4) In a cooling tower, for example; used to
dose 2 products at fixed intervals or for
twice daily dosing scheduled over one
week.
The time dosing function can be combined
with an ON/OFF function on a conductivity
measurement only, in order to ensure
prebleed of the system. The "ON/OFF"
function must be configured and activated
before the time dosing function.
Volume
dosing Optional (see
chap. 8.10.4) Dedicated to cooling towers. Metering of
a specific volume of water and activation
of an actuator during a specific period in
order to add a product, and finally reset
the water volume to zero.
Concentration Optional (see
chap. 8.10.4)
The concentration graphs for certain
compounds such as NaCl and H
2
SO
4
are memorised for use over the entire
concentration range.
Datalogger
on memory
card Optional (see
chap. 8.10.4) Option to memorise the variations in 1 to
16 values in a given time interval.
5.4. functional diagram
INPUTS FUNCTIONS 1) OUTPUTS
Digital inputs or frequency
inputs
Function 1 OUTPUT SIGNAL
Analogue inputs, current or
voltage
...
Transistor,
1 and 2
PWM or
on/off or PFM
or pulse Conductivity sensor (2 or 4
electrodes)
Function 6
pH / Redox sensor
4-20 mA,
1 and 2
4-20 mA
Temperature sensor, Pt100 or
Pt1000
Display
Memory card
1) active simultaneously
Type 8619
english