Portable Explosion Proof Dehumidifier

Conloon Portable Explosion Proof Dehumidifier models are processed through special explosion-proof technology. Widely used in national defense, scientific research, petroleum, chemical, pharmaceutical, processing and manufacturing, biology, etc. exist in Classes IIA, IIB, T1 ~ T4 group flammable gas, steam and air are mixed to form a dangerous explosion-prone place

Conloon Portable Explosion Proof Dehumidifier models explosion-proof mark is Ex nC d ib mb II B T4 Gc / Ex nC d ib mb II C T4 Gc

Case Study: Explosion-Proof Dehumidifier in a Wheat Flour Silo
1. Selection & Requirement Analysis
A wheat processing plant needed to control humidity in its main storage silo to prevent caking and, crucially, to mitigate the severe explosion risk posed by combustible flour dust. They required a dehumidifier that could operate safely in this hazardous environment.

2. Confirming the Explosion Protection Rating
After a hazard analysis, the area was classified as Zone 21 (an area where combustible dust is likely to occur during normal operation). The suitable explosion protection rating was confirmed as Ex tb IIIC T135°C Db. This signifies:

Ex: Explosion-protected.

tb: Protection by enclosure suitable for dust (Zone 21).

IIIC: Conductive dusts (like flour).

T135°C: Maximum surface temperature of 135°C, safely below the ignition point of flour dust.

3. Design & Production
CONLOON designed a dehumidifier with a robust, dust-tight enclosure. All electrical components-motor, controls, and wiring-were engineered to prevent surface temperatures from exceeding 135°C and to contain any potential electrical sparks within the certified housing. The unit was then built, rigorously tested, and certified by an authorized body (e.g., SEDRI) for the Ex tb IIIC T135°C Db rating.

4. Installation & Commissioning
Qualified technicians installed the unit, ensuring all electrical connections used certified conduit seals. It was positioned for optimal airflow and accessibility. Before powering on, a final inspection verified correct grounding and enclosure integrity. The unit was commissioned, and plant staff were trained on its safe operation and maintenance procedures within the hazardous zone.

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