Operating instructions

Loading mechanism of the weighing cell
9
3 Loading mechanism of the weighing cell
The loading mechanism of the weighing cell for your MX5-S/UMX2-S automated balance has been specially developed for use in
automated environments. The loading mechanism is controlled by a host computer using MT-SICS commands and loading is carried
out automatically (e.g. using a robot). However, the loading mechanism can also be controlled manually using the «K» door keys on
the terminal. This chapter provides basic information about the loading mechanism and manual and automatic control.
3.1 Operating principle of the loading mechanism
The loading mechanism consists of the weighing chamber cover and the weighing sample holder. Both are moving parts, while the
weighing pan remains in its position. The weighing sample holder recognizes 3 positions (see diagram):
1
2
3
Loading position:
The weighing sample holder (1) is in its top position, the weighing chamber cover (2) is open. The weighing
sample is loaded in this position.
2
1
3
Zero position:
The weighing sample holder (1) is in the middle position. The weighing sample has not yet been placed on
the weighing pan (3). The weighing chamber cover (2) is closed and thus ensures that the ambient conditions
are stable so that the zero point can be determined.
2
1
3
Weighing position:
The weighing sample holder (1) is in the bottom position, the weighing chamber cover (2) is closed. The
weighing sample is on the weighing pan (3) and the weight can be determined.
3.2 Controlling the loading mechanism via the terminal
The loading mechanism can be controlled using the «K» door keys on the terminal (or via the “SmartSens” sensors). Control is as
follows:
Starting position of the
weighing sample holder
Left «K» moves weighing sample
holder to the following position
Right «K» door key moves weighing sample
-holder to the following position
Loading position Zero position Zero position
Zero position Loading position Weighing position
Weighing position Zero position Zero position
In order to familiarize yourself with the operating principle of key control, you can remove the weighing chamber cover (tilt locking
rocker and remove cover by pulling it forwards) and then observe the movement of the weighing sample holder after pressing the
relevant keys.