Design And Measuring Principle - bürkert 8035 Bedienungsanleitung

2 SPECIFICATION

2.2 Design and Measuring Principle

Design
The Batch Controller 8035 Inline consists
of an electronic IP65 housing SE35 set by
quarter turn on the fitting S030. The
electronic housing integrates the electronic
board with display, programmation keys
and also a the transducer. The paddle-
wheel is mounted in the fitting.
The transducer component converts the
measured signal and displays the actual
value.The output signals are provided via
two cable glands.
Measuring and Dosing Principle
When liquid flows through the pipe, 4
magnets inserted in the paddle-wheel set
in rotation produce a measuring signal in
the transducer.
The frequency modulated induced voltage
is proportional to the flow velocity of the
fluid. A conversion coefficient, specific to
each pipe (size and material) enables the
conversion of this frequency into flowrate.
This coefficient (Factor-K in pulse/liter) is
available in the instruction manual of the
inline fitting (S030).
The controller 8035 Batch is mounted on
a pipe in series with the valve. The 8035
unit measures the flow, calculates the
volumes, and operates the valve(s)
according to the selected program
(see § 4).
The controller electronic module 8035
Batch requires a power supply of
12-30 VDC or 115/230 VAC, depending
on the version.
BATCH CONTROLLER 8035
Dosing options
Following dosing modes are available
I) Local dosing command:
a) The user enters the volume to be
measured and initiates the dosing from the
keypad. ("LOC.MANU") (§ 4.3.1)
b) Local dosing with preset volumes.
Selection of a pre-set volume and
activation of the process from the
keypad.("LOC.MEM").
(§ 4.3.2)
c) Combination from "LOC.MANU" and
"LOC.MEM" options. activated from the
keyboard ("MEM+MANU") (§ 4.3.1 + §
4.3.1).
II) Remote dosing command:
a) Dosing controlled by binary inputs
issued from a PLC. Each pulse controls the
dosing of a preselected
volume.("EXT.MEM") (§ 4.3.4)
b) Automatic dosing controlled by the
pulse duration. The ditributed volume is
directly proportionnal to the pulse duration
("EXT . [T]") (§ 4.3.3)
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