Burkert Type 1094 - Manual (Page 24)

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Operation and function
first use and calibration of the 8.4.1.
controller
The electronic controller for vapor recovery Type 1094 EV is program-
controlled and must be adjusted (calibrated) to the actual gasoline
pump process before it is used for the first time.
The electronic controller is calibrated with the separate (external)
manual control unit Type MKNE-1094.
This external manual control unit has separate operating
instructions. Read these operating instructions carefully and
select the mode of operation which is appropriate to your
application case.
Manual control unit Type MKNE-1094 Fig. 12:
Before calibration, the pulse rate, the K-factor and the pump
overtravel time must be specified and input.
note: If a Scheidt & Bachmann manual control unit is used,
the K-factor must be set to 1.00 during the calibration.
pulse rate and frequency input 8.4.2.
The pulse rate output by the gasoline pump computer is specified by
the gasoline pump manufacturer.
The indicated pulse rate can be set on the controller with the manual
control unit Type MKNE-1094.
K-factor for the suction rate 8.4.3.
The K-factor for the suction rate corrects the difference between
the flow rate properties of air and gasoline vapor. This correction is
required, as the extraction system is calibrated with atmospheric air
and subsequently operated with gasoline vapor.
The size of the K-factor is specific to the system. It is determined
as a quotient of the volume rate of air to the volume rate of gasoline
vapor.
For more information on determining the K-factor see the oper-
ating instructions for the manual control unit Type MKNE-1094
(in the chapter “Introduction to the Technology of Vapor
Recovery” the paragraphs “Information on Volume Rate...” and
“Determining the Correction Factor”).
English
Type 1094 EV