DABECO DB441-141 High-Temperature Humidity Transmitter Applied in Tobacco Drying

Anti-Pollution Type DB441-141 with display onsite

A large-scale tobacco drying enterprise requires strict temperature and humidity control throughout yellowing, color fixing, and stem drying stages. Parameter deviations may cause scorching or mildew, directly affecting product grade and profitability.

Previously, conventional sensors could not withstand temperatures up to 120°C. Humidity errors exceeded ±15% RH and temperature errors reached ±5°C. Calibration required factory return, causing downtime. Annual losses reached approximately USD 140,000.

To solve this, the company adopted the DABECO self-developed DB441-141 high-temperature humidity transmitter.

Structural Design Advantage
The DB441-141 adopts a split structure design:

The high-temperature probe (up to 200°C, contamination-resistant) is inserted directly into the drying chamber.

The transmitter unit is installed outside, protecting electronic components from heat and pollution exposure.

The 316L stainless steel probe ensures durability under harsh drying conditions.

Control & Maintenance
With 4–20 mA output, real-time data is transmitted to the central control system for dynamic adjustment.
RS485 interface enables on-site multi-point calibration without factory return.

Results
Humidity accuracy: ±2% RH (20–80% RH)

Temperature accuracy: ±0.2°C

Annual profit improvement: approx. USD 115,000

Maintenance cost reduced by over 30%

The DB441-141 delivers stable process control, improved product quality, and significant cost reduction.