Optimize facility safety in chemical and pharmaceutical plants by maintaining accurate pressure gradients between labs and hazardous production areas.
Maintaining precise atmospheric gradients within hazardous environments requires a specialized approach to instrumentation, particularly when managing the interface between sterile laboratories and ATEX-classified production zones. The DPT 200 series is engineered to provide the high-resolution feedback necessary for facility engineers to maintain critical pressure cascades, ensuring that air leakage always moves from cleaner or safer areas toward more contaminated or hazardous zones. In pharmaceutical cleanrooms where solvent vapors may be present, the bidirectional -100 to +100 Pa range allows for the monitoring of airlocks that must toggle between positive and negative states depending on the process cycle. This capability is vital for preventing the ingress of combustible dust in grain processing facilities or the escape of volatile organic compounds (VOCs) in paint spraying booths. By utilizing an intrinsically safe 4-20mA output with integrated HART communication, the DPT 200 allows for remote diagnostics and configuration, which is a significant advantage for facility engineers who need to verify sensor performance without entering the hazardous area or breaching the containment barrier.
One of the most technically distinct features of the DPT 200 is its exceptionally high static pressure rating of 70 bar, which is unusual for a transmitter with a full-scale range as low as 100 Pa. This robust construction protects the sensitive 316L stainless steel diaphragm from damage during sudden pressure surges or during the high-pressure cleaning cycles often found in chemical processing and biogas plants. For a facility engineer, this translates to long-term stability and reduced maintenance intervals, as the sensor is less susceptible to the zero-point shifts often caused by overpressure events in less durable instrumentation. The use of FKM seals and 304 stainless steel housing further ensures compatibility with the aggressive sanitization agents used in pharmaceutical environments and the corrosive atmospheres typical of wastewater treatment facilities. When installed in Zone 21 environments, such as flour mills or wood processing plants, the IP67 rating and M20 x 1.5 cable gland connection provide the necessary ingress protection to prevent fine organic dust from compromising the internal electronics.
The integration of the DPT 200 into a facility’s building management system (BMS) or distributed control system (DCS) facilitates a precise level of containment control that is essential for both personnel safety and product integrity. In engine test cells, where volatile fuel mixtures are analyzed, the transmitter’s accuracy of <±0.075% FSO ensures that even the slightest deviation in differential pressure is detected, allowing for immediate compensation by the ventilation system to prevent the accumulation of explosive vapors. For facility engineers overseeing multiple ATEX zones, the ability to mount the transmitter in various orientations while maintaining high accuracy is a practical benefit, though it is always recommended to perform a zero-point calibration after installation to account for the effects of gravity on the low-range diaphragm. This level of technical precision supports the rigorous requirements of IEC 60770 standards, providing a reliable foundation for pressure monitoring in the most demanding industrial and research applications.
DPT200 ATEX Low Range DP Transmitter
- Part No: 343-A-7-I-17-2-AN-AK0-N20-0-N20-0-02-11-1-000
- Pressure Datum: Differential Pressure
- Differential Pressure Range: 0 – 1mbar up to 0 – 10mbar
- Factory Set Range: -100 to +100 Pa
- Maximum Static Pressure: 70 bar
- Display: Without display
- Output: Intrinsic safety ia 4-20mA/ 2-wire with HART
- Accuracy: <±0.075% / FSO IEC 60770
- Electrical Connection: Terminal clamp / M20 x 1.5 Cable Gland
- Housing Material: Stainless Steel 304
- Process Connection: Internal thread 1/4″ – 18 NPT
- Process Connection Material: Stainless Steel 1.4301 (304)
- Diaphragm Material: Stainless Steel 1.4435 (316L)
- Seal Material: FKM
- Special Options: None
- Supply Voltage: 15 – 42 V dc
- IP Rating: 67
- Media Temperature: -40 to +100°C
- Operating Temperature: -20 to +65°C
- Approvals: ATEX Approval II 1/2G Ex ia IIC T4 Ga/Gb