Features and Functional Highlights of the BD Sensors DMD 831 Differential Pressure Transmitter
Wide Differential Pressure Range and High Accuracy
The DMD 831 supports differential pressure measurements from 0 … 1 bar up to 0 … 70 bar with an accuracy of ≤ ±1% BFSL, ensuring precise and dependable readings for critical process control.Rotatable Display and Pressure Ports for Flexible Installation
The 4-digit red LED display and pressure ports can be rotated to suit installation requirements, with selectable display modes for positive, negative, or differential pressure.Configurable Contacts and Analogue Output
Equipped with one or two PNP contacts (125 mA max switching current) and a 3-wire 4-20 mA analogue output, the transmitter offers flexible switching and signal output options for integration into control systems.Robust Construction with Stainless Steel Sensors and Seals
The device features stainless steel 316L sensors and pressure ports, FKM seals, and a durable housing made of PA 6.6 and polycarbonate, ensuring long-term reliability in harsh environments.Programmable Digital Damping and Delay Times
Digital damping (0.3 to 30 seconds) and switching delay (0 to 100 seconds) are programmable, allowing the transmitter to adapt to dynamic pressure changes and reduce signal noise.
Technical Specifications of the DMD 831 Differential Pressure Transmitter with Display and Contact
| Specification | Details |
|---|---|
| Differential Pressure Range | 0 … 1 bar up to 0 … 70 bar |
| Nominal Pressure Range | Up to 70 bar |
| Accuracy | ≤ ±1% BFSL (according to IEC 60770) |
| Output Signal | 3-wire 4 … 20 mA |
| Contacts | 1 or 2 PNP contacts, 125 mA max switching current, short-circuit proof |
| Display | 4-digit red LED, digit size 7 mm, range -1999 to +9999, selectable display modes (P+, P-, ∆P) |
| Digital Damping | Programmable 0.3 to 30 seconds |
| Switching Delay | Programmable 0 to 100 seconds |
| Supply Voltage | 24 VDC ± 10% |
| Materials | Sensor: Stainless Steel 1.4404/1.4435 (316L); Housing: PA 6.6, Polycarbonate; Seals: FKM |
| Ingress Protection | IP65 |
| Mechanical Stability | Vibration: 10 g RMS (20 … 2000 Hz); Shock: 100 g / 11 ms |
| Operating Temperature Range | Medium: -40 … 125 °C; Electronics/Environment: -25 … 85 °C |
| Weight | Approx. 350 g |
Suitable Applications for the DMD 831 Differential Pressure Transmitter
The DMD 831 is ideal for industrial applications requiring accurate differential pressure measurement with integrated display and switching capabilities. Its robust design and flexible configuration options make it suitable for use in process industries where monitoring of fluid and gas pressures is critical.
Suitable applications include:
- Process control in chemical and petrochemical industries
- Monitoring pressure in hydraulic and pneumatic systems
- HVAC system pressure measurement and control
- Food and beverage industry process monitoring
- Water and wastewater treatment plants
- Energy and power generation systems