The "Invisible Steward" of the Pulp Drying Section

How DB442 Solves Monitoring Challenges Under High-Humidity and Dust Conditions

Temperature and humidity monitoring in pulp drying sections is extremely challenging. Operating at 120–160 °C with 50–70% RH and heavy paper dust, conventional sensors often fail within two months, causing inaccurate readings, sheet sticking, and frequent production downtime.

The DABECO DB442 Integrated High-Temperature Temperature & Humidity Transmitter was developed to solve these challenges.

Built for harsh pulp drying conditions, DB442 features a 316L stainless steel probe, movable flange mounting, and a customized 500 mm insertion length to reach the core airflow zone and ensure accurate measurements. Its IP54 protection and anti-condensation design effectively resist dust accumulation and moisture-related failures.

DB442 supports absolute humidity measurement (optional up to 0–130 g/m³), enabling direct evaluation of paper dryness and timely adjustment of drying speed. With ±0.2 °C accuracy at 25 °C, it detects subtle temperature fluctuations, preventing localized overheating. Through RS485 Modbus RTU, real-time data is integrated into the mill’s MES system, improving data traceability by 90%.

Results after deployment:

Sensor lifespan extended to 10+ months, reducing maintenance costs by 75%

Paper dryness pass rate increased from 92% to 99.5%, eliminating sheet-sticking downtime

Drying energy consumption reduced by 8%, saving over USD 1,600 per month

Today, DB442 serves as a reliable “invisible guardian”, ensuring stable, efficient, and cost-effective pulp drying operations.