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QDW90A-7 Hirschmann Pressure Transmitter for Industrial Control Systems

A digitally compensated diffused-silicon pressure transmitter with up to 100MPa range and flexible 4–20mA/voltage/RS485 outputs for stable hydraulic, pneumatic, and industrial integration.
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QDW90A-7 Hirschmann Pressure Transmitter

Standard Pressure Output for Control Systems

QDW90A-7 is a pressure transmitter designed around “Standard Pressure Output for Control Systems.” Supports 4–20mA, RS485, DC for stable pressure measurement and system integration. The standardized signal path routes the measured value to PLCs, DCS platforms, displays or remote monitoring equipment. The confirmed values highlighted here are 4–20mA, RS485, DC. The feature is directly relevant to compressed air system, hydraulic system and industrial process projects. Connect field measurements directly to existing plc and monitoring systems, helping engineers keep the installation, inspection and signal path easier to manage during long-term operation.

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Hirschmann Connector for Reliable Field Wiring

QDW90A-7 is a pressure transmitter designed around “Hirschmann Connector for Reliable Field Wiring.” Improves pressure stability, response or operating efficiency under changing field conditions. The stated operating range, accuracy, response, overload or stability feature supports more dependable data under changing field conditions. The feature is directly relevant to compressed air system, hydraulic system and industrial process projects. Maintain clearer trend data during long-term industrial operation, helping engineers keep the installation, inspection and signal path easier to manage during long-term operation.

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Installation-focused Design for Pressure Transmitter

QDW90A-7 is a pressure transmitter designed around “Installation-focused Design for Pressure Transmitter.” The dedicated mechanical and connector structure simplifies installation, replacement and field maintenance. The dedicated mechanical, connector or mounting structure helps the instrument fit the intended pipe, tank, cabinet or equipment interface. The feature is directly relevant to compressed air system, hydraulic system and industrial process projects. Shorten installation time and simplify later field maintenance, helping engineers keep the installation, inspection and signal path easier to manage during long-term operation.

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Working Principle Diagram

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Technical Specifications

Measurement Type:Gauge pressure (G), absolute pressure (A), negative pressure / vacuum—selectable

Standard Range Coverage:0–10 kPa / 0–100 kPa / 0–1 MPa / 0–1.6 MPa / 0–10 MPa / 0–60 MPa / 0–100 MPa

Overall Accuracy Class:Standard Class 0.2 ±0.2% FS; optional economy Class 0.5 ±0.5% FS

Independent Nonlinearity Error:≤±0.1% FS

Hysteresis and Repeatability Errors:≤±0.05% FS

Temperature Drift Across the Full Temperature Range:≤±0.03% FS/°C (full compensation range: -20°C to 80°C)

Zero Point / Full-Scale Temperature Drift:≤±0.02% FS/°C

Step Response Time:≤10 ms (10%–90% full scale step)

Long-Term Stability:≤±0.2% FS/year

Standard Output Signal:4–20 mA two-wire; optional 0–5 V / 0–10 V three-wire, RS485 Modbus-RTU digital output

Dimension Chart

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Wiring Diagram

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Phone: +86-19715617532
Add: Building 14, University Science and Technology Park, Fenghuangshan Economic Development Zone, Xiangshan District, Huaibei City, Anhui Province

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