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QDW90A-5SP Digital Pressure Switch for Equipment Control

A compact digital pressure switch with dual PNP/NPN outputs, adjustable hysteresis/window control, and M12 connector for easy pump, valve, and alarm interlocking.
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QDW90A-5SP Digital Pressure Switch

Integrated Control Function for Faster System Response

QDW90A-5SP is a digital pressure switch designed around “Integrated Control Function for Faster System Response.” Provides clear switching, alarm or relay functions for equipment control and interlocking. The alarm, relay, switching or control function turns the measured condition into a clear action for pumps, valves, warning devices or equipment interlocks. The feature is directly relevant to pressure monitoring, hydraulic system and industrial process projects. Respond faster to abnormal conditions and equipment control demands, helping engineers keep the installation, inspection and signal path easier to manage during long-term operation.

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Clear Local Display for Faster Field Inspection

QDW90A-5SP is a digital pressure switch designed around “Clear Local Display for Faster Field Inspection.” Displays the measured value directly at the process point for easier inspection and commissioning. The local display makes the live value and operating state easier to verify during commissioning, inspection and routine maintenance. The feature is directly relevant to pressure monitoring, hydraulic system and industrial process projects. Check operating status directly without opening the control system, helping engineers keep the installation, inspection and signal path easier to manage during long-term operation.

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Aviation Connector for Faster Equipment Maintenance

QDW90A-5SP is a digital pressure switch designed around “Aviation Connector for Faster Equipment Maintenance.” 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 pressure monitoring, 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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Technical Specifications

Switch Point Repeatability:≤0.5% F.S.

Hysteresis Adjustment Range:0.5% ~ 100% F.S., continuously adjustable per channel

Switch Response Time:1ms ~ 10s software adjustable (1ms step); suppresses false triggers from pressure pulsation and water hammer

Switch Control Modes:Hysteresis mode / window mode; independently configurable for both SP1 and SP2

Switch Output Type:2-channel PNP or NPN transistor output (specify when ordering)

Maximum Switching Current per Channel:200mA (resistive load)

Zero Temperature Drift:≤0.03% F.S./℃

Sensitivity Temperature Drift:≤0.03% F.S./℃

Long-term Stability:≤0.5% F.S./year

Switching Service Life:≥1,000,000 operations; solid-state output eliminates mechanical contact wear and arcing

On-site Calibration:Zero reset and span fine-tuning via front keys; no precision pressure source required for routine adjustment

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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