Microgram Resolution for Industrial Processes

Balances with one microgram resolution are a standard in laboratories. However, these are entire systems that need optimized placement and care. Therefore, weigh modules that maintain true microgram resolution in industry, even if integrated into machines, are novel and allow for new applications.

The new WX weigh module specifies a capacity of 20g with a readability of 1μg. Its fast weighing technology and data transmission via RS232/422 or Fieldbus delivers reproducible values. A METTLER TOLEDO specific electronic filter compensates external impacts such as vibration. Thus it allows for example fast and precise filling, production, and testing processes. 
 
Overload Protection 
The weighing cell in a stainless steel housing benefits from mechanical protec­tion against vertical static overload. It is also protected against later­al shear forces such as those occurring during automatic loading and unloading of the weighing pan or in the event of malfunction of handling equipment. 
 
Adaptable Weighing Pan   
The weighing pan has three holes to fasten customized adapters to hold vials or tubes. An adapter may weigh 1/3 of the full load without restricting weighing capacity of 20g. The pan can be lifted off the weigh module without having to use tools. It is blocked against unwanted rotation in order to keep holding devices in position. However, the blockade opens in the event of collisions with handling devices, so that the pan
can be turned through its own axis without risk of damage.
 
Easy to Clean 
The weigh module complies with the common requirement for efficient cleaning in order to avoid cross contamination when formats and products are changed. Thanks to the rugged industrial plug connectors with IP67 protection, the weigh module can be rinsed with a cleaning fluid. The weighing pan is easily removed for cleaning. The opening exposed can be sealed with the cover supplied.