Bronkhorst CORI-FILL - Manual (Page 5)

9.17.075
Bronkhorst Cori-Tech BV
5
1.1
Features:
Less supply pressure needed as for proportional valves due to large orifices
Low dead volume between sensor and valve
Fast (up to < 0.5 sec. dosing time)
Adaptive overrun correction
Optimal accuracy after a few batches
Adjustable correction factor for faster or slower overrun correction
Cost effective and very compact
Also useable for on-off switching of pumps
Electrical as well as pneumatically shut-off valves available
1.2
Features:
“First time right” batch (no overrun correction needed)
Suitable for longer dosing times (> approx. 5 seconds)
Will need at least same pressure drop as over Coriolis sensor for stable
control, only to be used if supply pressure is sufficient
Also usable for pump control
Adjustable P-action on batch counter
1.3
by controlling the pump in speed (via integrated U/f-converter) or by just
switching the pump on and off using the shut-off filling method. It will follow
the features for the according filling method.
(Liquid) pumps can be used in stead of valves by just connecting the instrument
controller output signal (voltage or current) to an analog input signal at the
valve for speed control (if available for the pump) or use a relay to switch the
pump using the controller output signal.
The controller output signal can drive up to 4 Watt of energy.
For speed control of pumps a 300 Ohm resistor parallel to the analog input is
advised. Your local sales representative can provide more information about
this.