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Operating instructions digital oval gear meter G
1. General details
1.1 Intended use
This oval gear meter has been designed and built for measuring volumes of various media featuring
dierent viscosities, and for the storage of data so collected.
The oval gear meter is intended for installation at the end of an output hose, e.g. a hose reeler.
1.2 Design and functional description
The oval gear meter is a uid meter with electronic counter & memory and digital display.
The medium owing through the meter causes an oval gear mechanism to rotate which activates a
reed switch. This generates an electrical pulse which is fed to the electronic counter. A multiplication
factor is applied to convert the pulses into an intelligible volume of liquid having gone through the
device, which is then shown on the LCD display.
The multiplication factor has been pre-set at the factory using an average that has turned out to be
useful in normal operation. However, it can be easily adapted to specic requirements by the user.
The total volume measured is stored and can be called up by pressing the TOTAL
button.
Data collection and analysis are being constantly monitored by the electronics. Errors are reported
immediately.
The electronic counter needs a two-phase input signal that‘s being monitored for phase errors. A self
test is being carried out before every reset.
The user needs only two membrane key switches for operation: RESET and TOTAL (i.e. total volume).
The body of the device is made of aluminium.
The electronic components and LCD display sit at the top of the meter, far away from and well insulated
against the wet measuring chamber. There is a cover to protect them against the working environment.
MEASURING CHAMBER
RESET BUTTON
DISPLAY LCD
TOTAL BUTTON
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