DB481 High-Temperature Humidity Transmitter

Precision Monitoring for Gypsum Board Drying

A leading international building materials group’s gypsum board plant uses a modern multi-layer kiln for high-strength board production. The drying process requires strict temperature & airflow control: initial >200°C for fast evaporation, mid-stage 80–110°C to avoid calcination, with cross/longitudinal airflow for uniform drying (6–25mm boards). Previously, delayed high-temperature humidity monitoring caused cracking/underdrying defects, with an 8% scrap rate.
Key Challenges
• Wide-temperature monitoring (50–200°C) with stable performance above 200°C
• Real-time humidity data linked to airflow control to prevent warping/mold
• Adaptation to board thickness, paper facing and slurry additives
Solution: DB481-H High-Temperature Humidity Transmitter
DABECO’s DB481-H is engineered for demanding drying processes:
• Wide & stable range: -40–400°C, ±2%RH accuracy above 200°C, no drift in rapid cooling
• Multi-zone linkage: Probes in cross/longitudinal zones, RS485 to PLC, auto-adjust exhaust
• Anti-interference: PTFE coating + auto-purge; customizable humidity-evaporation curve
Results
• Defect rate reduced: From 8% to 1.2%, saving ~RMB 1.2M/year
• Energy & efficiency: 500 kWh/day saved per line; drying cycle shortened 15%
• Process standardized: New line commissioning cut from 2 weeks to 3 days
Client Testimonial
“DB481-H offers superior high-temperature stability, 3x faster response above 200°C. It eliminated calcination and built standardized processes. DABECO customized the humidity-airflow algorithm for intelligent production.”
— Process Director
DABECO DB481 Series: The benchmark for high-temperature drying monitoring in building materials.