VEGA MINITRAC 31 4 … 20 mA_HART - four-wire User Manual

Page 48

6 Set up with the display and adjustment module

MINITRAC 31 • 4 … 20 mA/HART - four-wire

40447-EN-131119

In the main menu point "Setup", the individual submenu points

should be selected one after the other and provided with the correct

parameters to ensure optimum adjustment of the measurement. The

procedure is described in the following.
Stick with the normal sequence of the menu items as closely as pos-

sible.
Setup
In this menu item you can assign an unambiguous name to the sen-

sor or the measurement loop.
This parameter is described in the operating instructions manual

"Display and adjustment module".

In this menu item you can adjust the MINITRAC 31 to the integrated

isotope in the source container.
For this purpose, check which isotope is integrated in the source

container. You can find this information on the type label of the source

container.

Through this selection, the sensitivity of the sensor is adapted

perfectly to the isotope. The normal reduction of the emitter activity is

hence considered through the radioactive decay.
The MINITRAC 31 requires this information of the automatic decay

compensation. This ensures an interference-free measurement over

the complete life time of the gamma emitter - an annual recalibration

is not necessary.
Enter the requested parameters via the appropriate keys, save your

settings with [OK] and jump to the next menu item with the [ESC] and

the [->] key.

Enter here, the respective application.
This menu item enables adaptation of the sensor to the requested ap-

plication. You can choose between the following applications: "Level",

"Density", "Limit level", "X-ray alarm" or "Real value correction".

The natural radiation on earth influences the accuracy of the meas-

urement.
With this menu item the natural background radiation can be faded

out.
For this purpose, the MINITRAC 31 measures the natural background

radiation and sets the pulse rate to zero.

Setup - Measurement

loop name

Setup/Isotope

Setup/Application

Setup - Background

radiation