Emerson mobrey MSP-USTD1 Hızlı Başlangıç Kitapçığı - Sayfa 10

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Application/Duty: Contents Measurement

With power on and the MSP900SH transmitter giving a 4-20mA signal to the MCU901 unit (see previous pages), you can

now programme the MCU901 for an application. This application example is for contents measurement.

Start the "Duty" Wizard by pressing the yellow (ENTER) key once.

Work through the "Duty" Wizard prompts until completion; this occurs when the menu system re-appears. Keypad

hints, for the illustrated Wizard sequence on the next page, are provided alongside the prompts. If applicable, adapt

the example to suit your application.

Circled numbers in the illustrated Wizard sequence relate to these notes:

Select "Contents" from the multiple-choice list.

The required tank shape is a pre-programmed shape from the MCU901 library.

Maximum contents as calculated by MCU901 unit. It can be edited here if required.

Programme the 4-20mA output span with a content range (e.g. 0 to 24,543.5 litres)

Set-up a low level alarm – the relay RL1 is energised whenever the measured level falls below a pre-set level and

de-energises on rising above another pre-set level, as defined at these prompts.

Optional overrides to prevent individual relays from being energised for too little time or too much time.

Option to set-up further relays.

Return to the main menu by holding the ESC key for a few seconds, releasing it when the main menu appears. Next, go

on-line by selecting the "Go on-line" menu option and then pressing the ENTER key once. Finally, press the ESC key

repeatedly until the primary display appears. The content measurement will be live on the primary display.

(IP2040/QS)

Requirement

Live contents measurement in units of litres.

Low level alarm at 2000 litres.

Input Data

Tank Shape: horizontal cylinder with flat ends.

Tank Diameter: 2.5 metres.

Tank Length: 5 metres.

The MSP900SH transmitter is supplying live level measurements in units of

metres.

Navigate the menu system to get to the "Duty Wizard"

screen. Key-press hints are alongside the screens.

January 2006