JUMO dTRANS p33 Ex-Area Pressure Transmitter

Overview

JUMO dTRANS p33 is a pressure transmitter and level probe engineered specifically for use in explosion-hazardous areas, continuously measuring the pressure of non-aggressive and aggressive gases, vapors, liquids, and dusts using the piezoresistive measuring principle. ATEX-certified per SEV 09 ATEX 0140 X, the JUMO dTRANS p33 is deployed in demanding applications including flour and grain silos, where explosive dust atmospheres make certified equipment essential to safe plant operation.

As the official authorized partner and exclusive regional representative for JUMO, Seven Star LLC proudly supplies the JUMO dTRANS p33 Ex-area pressure transmitter to chemical, oil and gas, and industrial customers across Oman and the wider GCC. Every unit shipped through Seven Star LLC is genuine JUMO product with full manufacturer warranty and access to local technical support – ensuring facility engineers and procurement teams in Muscat, Sohar, and Salalah receive an authentic, factory-certified JUMO dTRANS p33 backed by regional service.

Working Principle

The JUMO dTRANS p33 uses a piezoresistive silicon sensor to detect pressure, producing a load-independent direct current output signal that varies linearly in proportion to the input pressure, per reference conditions established in DIN 16086 and IEC 770/5.3. In its level probe configuration, ambient atmospheric pressure is compensated through a special cable with an integrated pressure equalization hose, so variations in air pressure at the surface are automatically accounted for, and only the true hydrostatic pressure of the liquid column is reflected in the output.

What sets the JUMO dTRANS p33 apart is its dual explosion-protection certification: the transmitter fulfills equipment group II requirements for zone 1 and 2 gas-hazardous areas, with the process connection itself mountable up to zone 0, and for zone 21 and 22 dust-hazardous areas, with the process connection mountable up to zone 20. This dual-zone gas and dust rating makes the dTRANS p33 unusually versatile among Ex-certified pressure instruments, suitable for both petrochemical gas atmospheres and grain/flour dust environments from a single certified device.

Engineering Design of the JUMO dTRANS p33

The JUMO dTRANS p33 is housed in a stainless steel enclosure with a threaded process connection, rated IP65, and features a PE cable for electrical connection. Nominal input ranges span from 0 to 250 mbar gauge pressure up to 0 to 400 bar gauge pressure, with the transmitter withstanding a bursting pressure of 10x full scale (up to a maximum of 2000 bar) and an overload limit of 4x full scale for ranges below 100 bar, or 2x full scale for ranges at or above 100 bar.

Accuracy (linearity) is rated at 0.5%, with zero signal offset held to ≤0.3% MSP, and the transmitter includes reverse-polarity protection to guard against wiring errors during installation. Admissible medium temperature spans -40°C to +200°C, and the standard 4 to 20 mA two-wire output integrates directly with existing loop-powered instrumentation infrastructure. The EC-type examination certificate SEV 09 ATEX 0140 X documents the transmitter’s explosion-protection compliance for procurement and safety documentation purposes.

Key Features

The JUMO dTRANS p33 combines dual gas/dust Ex certification with rugged piezoresistive sensing that makes it a specialized choice for pressure and level measurement in hazardous area installations.

• ATEX certification (SEV 09 ATEX 0140 X) covers both zone 1/2 gas hazards and zone 21/22 dust hazards from a single device.
• The process connection is mountable up to zone 0 (gas) or zone 20 (dust) for the most demanding hazardous area classifications.
• A level probe configuration with integrated pressure equalization hose automatically compensates for atmospheric pressure variation.
• Admissible medium temperature range of -40°C to +200°C supports a wide variety of process conditions.
• High overload resistance (up to 10x full scale bursting pressure) protects the sensor from transient pressure spikes.
• Numerous process connection options provide installation flexibility across different hazardous area equipment.
• Reverse-polarity protection guards against wiring errors during field installation.
• A stainless steel housing with IP65 protection supports demanding industrial and outdoor environments.

Industrial Applications

The JUMO dTRANS p33 is deployed across grain and flour silos, chemical and petrochemical processing, and other facilities with classified gas or dust explosion hazards wherever certified pressure or level measurement is required. Typical duties include silo level measurement in dust-hazardous grain handling facilities, process pressure monitoring in gas-hazardous chemical plants, and general Ex-area instrumentation requiring dual gas/dust certification.

As the officially authorized partner for JUMO, Seven Star LLC distributes the JUMO dTRANS p33 to chemical processing facilities, grain handling operations, and oil and gas plants throughout Oman and the GCC. The transmitter is a strong fit for hazardous area instrumentation across the Sohar and Salalah industrial zones, as well as for chemical, petrochemical, and grain storage facilities across Muscat that require dependable, dual-certified Ex-area pressure and level measurement.

Technical Specifications

The table below summarizes the core specifications of the JUMO dTRANS p33 Ex-area pressure transmitter as supplied by Seven Star LLC.

Call To Action

Seven Star LLC supports the full procurement cycle for the JUMO dTRANS p33 Ex-area pressure transmitter, from formal RFQ submission to regional warehouse stock availability, technical datasheet delivery, and direct consultation with our instrumentation division on zone classification, measuring range, and level probe configuration for your application. As the authorized partner for JUMO in Oman and the GCC, we ensure every JUMO dTRANS p33 transmitter is delivered with full manufacturer warranty and dependable local technical support. Contact Seven Star LLC today to request a quotation or discuss your hazardous area pressure measurement requirements.