The Expert 3400 ATEX versions are designed for installations where explosion protection compliance is required, while still delivering the accuracy, stability, and durability expected for water and wastewater level monitoring.
Key Benefits:
- High accuracy + long-term stability - Accuracy better than ±0.1% FS (50–85 °F) and long-term stability better than ±0.1% FS per year.
- Ceramic capacitive sensor for tough media - Designed for challenging wastewater/industrial environments; ceramic diaphragm supports robust measurement in demanding applications.
- Rag-resistant housing geometry - Designed without sharp edges to help reduce buildup of textiles, paper, and debris.
- ATEX for hazardous-area installs - ATEX approval for explosion-hazardous areas.
Applications
Hazardous-area installations (ATEX)
Selected for zones requiring explosion protection compliance while maintaining dependable 4–20 mA level output.
Wastewater (wet wells, lift stations, treatment plants)
Supports reliable level measurement in harsh wastewater environments while meeting hazardous-area installation requirements.
Industrial and chemical tanks (application dependent)
Ideal when chemical resistance and stable hydrostatic measurement are needed in industrial applications with ATEX constraints.
Process water
Provides consistent, repeatable level monitoring for industrial processes where ATEX approvals and metric ranges are preferred.
Available Configuration:
MJK203953– 0-3 m range, with 12 m cable
MJK203954– 0-5 m range, with 12 m cable
MJK203954-35– 0-5 m range, with 35 m cable
MJK203955– 0-10 m range, with 12 m cable
MJK203955-35– 0-10 m range, with 35 m cable
MJK203956– 0-30 m range, with 35 m cable
MJK Expert Selection Guide
Choose Expert 700 when…
- You’re installing in a tight well or narrow borehole, and physical size is your top constraint.
- You still want dependable level readings in a compact package.
Choose Expert 1100 when…
- You need reliable level monitoring for wells or drinking water tanks.
- You want a proven solution for storage, alarms, pump control, and trending in water applications.
- You need higher accuracy than the Expert 700 series
Choose Expert 1400 when…
- You need higher accuracy than the Expert 1100 and better long-term measurement performance.
- Your site has more demanding requirements.
Choose Expert 2100 when…
- You want the best “default” option for municipal pump stations, wet wells, and storage tanks.
- You’re looking for a rugged, low-fuss transmitter designed for real wastewater conditions.
Choose Expert 3400 (or 3400 ATEX) when…
- You need higher accuracy than the Expert 2100
- You’re in the harshest wastewater environments: ragging-prone wet wells, industrial sumps, or applications involving aggressive fluids.
- You need a model family with hazardous-area / ATEX versions available.