In ultra-high-purity (UHP) semiconductor applications, precision and durability are non-negotiable. Other industries, such as pharmaceuticals and biotechnology, also rely heavily on accurate and reliable weighing systems for consistent process results. This post analyzes the features and benefits of Tem Tech cylinder platform stainless steel (SS) scales and their integration into gas and liquid delivery systems or bulk liquid chemical monitoring.
Features of Tem Tech Stainless Steel Cylinder Scales
Corrosion Resistance
Made from high-grade stainless steel, Tem Tech cylinder scales are designed to resist corrosion and chemical degradation. This feature is crucial for monitoring weight in aggressive environments.
High Precision Measurement
Tem Tech scales provide reliable accuracy, calibrated to 0.6% FS accuracy based on a vessel’s tare weight ratio to the content’s net weight. This ensures optimized consumption of the source liquid.
User-Friendly Interface
Tem Tech scales feature a pre-made cable connector assembly for seamless integration. The low-profile design allows for easy cylinder transfer. Additionally, a pigtail cable is supplied to connect to a local weigh meter compatible with 4-20 mA signals, such as the TDWS 600 Digital Weight Meter. This system also integrates well with the Auto Switch Over Controller (TGS 400).
Durable Construction
Built to withstand demanding environments, Tem Tech stainless steel scales, including models like SEW-T420, ensure longevity and reliability even under harsh conditions.
Best Practices for Choosing the Best Weighing Systems
Assess Fluid Systems
When monitoring liquid-phase gas, environmental factors such as temperature fluctuations and long-term humidity exposure can impact data accuracy. Using a gas-phase pressure transducer can trigger an initial low alarm, while the scale serves as the final alarm to either auto-switch to a secondary vessel or prompt a refresh, ensuring accuracy regardless of temperature.
Determine Required Precision
- Ensure the UHP liquid vessel’s gross weight closely matches the scale’s maximum range.
- Monitor both the net weight and pressure of the liquid-phase gas cylinder to avoid product waste.
- Tem Tech weigh platforms can integrate with weight meters offering 0.1% FS resolution for high sensitivity.
Consider Integration Needs
Stainless steel platforms come with accessories like the TDS600-420-1 Digital Meter Setpoint Controller and the TGS400 Generic Gas Cylinder Changer Controller. The scales feature 4-20 mA two-wire signals for compatibility with 24 VDC systems. For hazardous or explosive environments, Tem Tech can recommend safety barrier strip components to enhance system safety.
Application-Specific Performance Analysis
Pharmaceutical and Biotechnology Manufacturing
In these industries, weight verification for batching and final dispensing is critical. Accurate weighing systems ensure quality control during manufacturing processes. Additionally, wash-down models are available for high-humidity or sterile environments requiring rigorous cleaning.
Semiconductor Manufacturing
Semiconductor factories rely on weight and pressure monitoring for liquid-based gas source vessels. The scale platform must withstand continuous exposure to shock during cylinder exchanges. Tem Tech models, with their rugged and low-profile designs, excel in safety cabinets and maintain reliable measurement.
Features include:
- Standard 4-20 mA output for universal input flexibility.
- 3-meter shielded cable assemblies for EMC/RFI protection.
- Low-profile, square platform dimensions starting at 9×9 inches for easy integration.
Tem Tech platforms can seamlessly integrate with the TGS400 Auto Switch Over Controller. This controller accepts:
- Two platform scale inputs
- Two pressure transducer inputs
- Two pneumatic valve outputs
- Two alternate setpoint output alarms
Conclusion
When it comes to reliable liquid vessel weight monitoring, Tem Tech stainless steel cylinder scales offer unmatched precision, durability, and versatility. By leveraging these design features, businesses can reduce downtime caused by damage or environmental extremes, resulting in cost savings and improved operational efficiency.
