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3 - Load Cell Technology Comparison
Accuracy
Reliability
Price
Service
Active Alerts
Short-term and long-term load cell system performance
Load cell designed to protect against environmental factors and failure
The initial acquisition cost of the load cell system
Ease of maintenance and prod- uct replacement
Proactive alarm system to alert the user of potential errors
POWERCELL
$ $ $ $ $
Strong digital signal combined with in-cell compensation algorithms delivers consistent accuracy
Stainless steel, hermetically sealed design protects the sensor circuits from harsh environments
Compared to other load cell systems on the market POWERCELL has a high initial cost
Onboard processors allow us- ers and technicians to quickly identify service needs
Self-monitoring system that alerts the user of any inconsis- tency in load cell performance
Digital
$ $ $ $ $
Strong digital signal that is less prone to interference from RFI, temperature, and other hazards
Varies by manufacturer but the stronger digital signal leads to less system vulnerability
Compared to other systems on the market digital cells have a high initial cost
Some systems offer diagnostic features that can assist with both regular and emergency service
Some systems have self-moni- toring features that alert you of communication interruption
Analog
$ $ $ $ $
Analog cells are accurate enough to meet most metrology standards but lack long-term consistent performance
Prone to failure due to low signal strength which is easily influenced by the surrounding environment
Analog cells are highly com- moditized and have the lowest initial cost
No diagnostic features, which leads to time-consuming man- ual adjustments
Cannot check the status of indi- vidual load cell signals in the system, no alerts available
Hydraulic
$ $ $ $ $
By using hydraulic fluid these load cells are protected from outside interference leading to an accurate weight signal
Being non-electronic, hydraulic systems hold up well in harsh conditions
Compared to other load cell systems on the market hydrau- lic cells have a high initial cost
Requires specialized mainte- nance procedures such as changing or bleeding fluid lines
Mechanical with no modern or advanced features such as self- monitoring or diagnostics
* This information is based on METTLER TOLEDO service records from 50,000+ in-field performance tests covering a wide range of load cell technologies
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