Burkert 8025 Notice D'utilisation page 47

2 DESCRIPTION
2.2 Construction and measuring principle
Construction
The compact version of the Batch Controller
consists of a transducer and electronic
circuitry with display facilities in a
polycarbonate IP 65 module. The flow rate
transducer consists of a vane positioned
between ceramic
measurement signal data are fed from the
connecting terminals of the electronic card
via 2 PG 13.5's.
The panel version of Batch Controller
consists of an electronics card mounted on
a front panel. The associated flow rate
transducer is an 8020/8030/8031 either in
the coil version or a low power Hall effect
transducer. The output signals appear on
the connecting terminals of the electronic
card.
The wall-mount version of Batch Controller
consists of 2 electronic cards mounted in
an ABS IP 65 enclosure. The associated
flow rate transducer is an 8020/8030/8031
in the coil version or a low power Hall effect
transducer. The output signals appear on
the connecting terminals of the electronic
card via 5 PG 9 cable glands.
Measuring principle
The unit is positioned in a pipe in series with
the valve; the unit controls the opening of
the valve and measures the quantity of the
fluid which flows; it also closes the valve
when the pre-programmed quantity has
been delivered.
bearings. The
E-4-
BATCH CONTROLLER 8025
The electronics circuit needs a voltage
supply of 12...30 V DC. Two output relays
are used to activate the valves and to initiate
alarms. The following dosing and filling
operations are possible:
- Local Dosing: the user enters the quantity
to be metered and initiates the dosage from
the keypad.
- Local Dosing with pre-set quantities. The
user selects a quantity which has been pre-
set and initiates the dosage from the keypad.
- Remote Control Dosing using a rotary knob
(selecting a pre-set quantity) or binary data
inputs.
- Dosing controlled by a PLC unit using
binary data inputs.
- Automatic Dosing controlled by variation
of pulse duration. The quantity of the dose
is directly proportional to the duration of a
pulse.
The compact and wall-mount versions of
batch controllers can be fitted with a power
supply of 115/230 VAC as an option.
To ensure maximum dosage and filling
accuracy, the fluid velocity must be higher
than 0.3 m/s (1 ft./sec.) for a preselection
counter fitted with a Hall effect flow rate
Burkert sensor and higher than 0.5 m/s (1.6
ft/sec) for a coil type flow rateBurkert sensor.
If other flow sensor type are used, refer to
the specific sensor measuring range.
8025-BATCH-**