Shanghai Zanke NP60 Series Intelligent Pressure Switch

Core Design and Operational Principles

The NP60 series intelligent pressure switch integrates advanced sensing technology with microprocessor-based control, enabling precise pressure monitoring and switching operations. Its working principle is based on the conversion of pressure signals into electrical signals via a high-sensitivity pressure sensor. The built-in microprocessor processes these signals, compares them with preset threshold values, and triggers switching actions accordingly to control external devices or systems.

The structural design emphasizes durability and adaptability, with key components selected to withstand varying industrial environments. The sensor module is isolated from external mechanical stress, ensuring measurement stability, while the housing provides effective protection against dust, moisture, and mechanical impact.

Key Performance Characteristics

• High measurement accuracy: Boasts a measurement error of ≤±0.5% FS, ensuring reliable pressure monitoring in critical applications.

• Fast response time: The switching action is triggered within ≤10ms after the pressure reaches the preset threshold, suitable for dynamic pressure control scenarios.

• Wide adjustable range: Supports flexible setting of pressure thresholds, with a range coverage that can be customized according to specific application requirements.

• Dual output functionality: Equipped with both relay output (for controlling high-power devices) and analog output (4...20mA) for real-time pressure signal transmission to monitoring systems.

• Self-diagnostic capabilities: Features built-in fault detection functions, including sensor error detection and overvoltage protection, enhancing operational safety.

• Digital display: Incorporates a clear LCD display that shows real-time pressure values, preset thresholds, and working status, facilitating on-site debugging and monitoring.

Technical Specifications

• Pressure measurement range: Standard ranges cover -0.1MPa to 0MPa, 0MPa to 1MPa, 0MPa to 10MPa, with extended ranges available upon request.

• Accuracy class: ≤±0.5% FS (including nonlinearity, hysteresis, and repeatability).

• Switching output: Relay output (AC250V/3A, DC30V/5A), with normally open (NO) and normally closed (NC) contacts.

• Analog output: 4...20mA (two-wire system), load resistance ≤500Ω.

• Power supply: DC24V (standard), AC220V (optional).

• Operating temperature range: -20°C to 70°C (ambient); -40°C to 85°C (storage).

• Protection rating: IP65, ensuring resistance to dust ingress and low-pressure water jets.

• Pressure connection: M20×1.5 external thread, G1/4 external thread, or other custom thread specifications.

• Housing material: Engineering plastic (standard), stainless steel (optional for corrosive environments).

• Vibration resistance: 10g (10Hz to 150Hz) in X, Y, Z directions.

Typical Application Scenarios

The NP60 series intelligent pressure switch is widely applicable in various industrial fields requiring precise pressure control, such as:

• Hydraulic and pneumatic systems: Used for pressure monitoring and protection in hydraulic presses, pneumatic cylinders, and pipeline networks, preventing overpressure damage to equipment.

• Water treatment and plumbing: Applied in water supply systems, sewage treatment plants, and pumping stations to control water pressure, ensuring stable operation of pipelines and pumps.

• Food and beverage industry: Suitable for pressure monitoring in cleaning-in-place (CIP) systems, pasteurizers, and filling machines, complying with hygiene requirements.

• Chemical processing: Deployed in pipelines and reactors handling non-corrosive or moderately corrosive media to monitor pressure changes and trigger safety interlocks.

• Mechanical manufacturing: Integrated into machine tools, injection molding machines, and packaging equipment for pressure-based process control and fault diagnosis.

Configuration and Installation

The NP60 series offers flexible configuration options to meet diverse application needs:

• Pressure type: Gauge pressure (standard), absolute pressure (optional).

• Output combination: Relay output only, or relay output + analog output.

• Display language: Supports multiple languages, including English and Chinese, for user-friendly operation.

• Mounting 方式: Panel mounting, pipe mounting, or wall mounting via optional brackets.

Installation requires proper alignment of the pressure connection with the pipeline, ensuring no leakage. Electrical connections should comply with relevant safety standards, with attention to insulation and grounding to avoid electromagnetic interference. Regular calibration is recommended to maintain measurement accuracy, with calibration procedures accessible via the on-site operation menu.

The NP60 series intelligent pressure switch combines precision, reliability, and ease of use, making it a practical solution for industrial pressure control and monitoring applications.