Pointer piston flow switch NC80C | High-Pressure Mechanical Flow Switch with Flow Indicator

Brand：NOIKE-AH
Model：NC80C

Specification

Product Overview

The NOIKE-AH Pointer piston flow switch NC80C is a high-pressure mechanical flow switch designed for reliable flow monitoring in demanding industrial applications. It features a magnetic piston supported by a precision spring, providing accurate and repeatable flow detection while maintaining complete isolation between the mechanical sensing mechanism and electrical components.

An optional pointer flowmeter head provides real-time visual indication of instantaneous flow rate, allowing operators to monitor system performance without additional instrumentation.

With its all-metal internal construction, pressure resistance up to 200 bar, and IP65 protection, the NC80C is ideal for hydraulic systems, lubrication systems, cooling circuits, and industrial process equipment.

Working Principle

The NC80C operates using a magnetic piston flow sensing principle.

As fluid flows through the sensor body, it pushes a precision magnetic piston against a calibrated stainless-steel spring.

When the flow reaches the preset switching point, the piston actuates an external micro switch or reed switch, generating an electrical output signal for system control or alarm functions.

For models equipped with the optional pointer indicator, the piston movement simultaneously drives the mechanical flow indicator, providing continuous visual display of the instantaneous flow rate.

The mechanical sensing mechanism and electrical components are completely isolated, improving reliability and preventing electrical components from being affected by pressure or media conditions.

Key Features

Precision magnetic piston sensing technology
Optional mechanical pointer flow indicator
Instantaneous flow visualization
High-pressure design up to 200 bar
All-metal internal construction
Excellent repeatability and long-term reliability
Mechanical and electrical components fully isolated
Temperature and pressure compensation design
Normally Open (NO) and Normally Closed (NC) outputs
Large switching contact capacity
Compact, maintenance-friendly structure
IP65 environmental protection
M12 × 1 electrical connector

Technical Specifications

Parameter	Specification
Measuring Principle	Magnetic Piston
Repeatability	≤ ±3% of Full Scale
Pressure Rating	200 bar (Stainless Steel); 100 bar (Brass)
Output Type	Normally Open (NO) / Normally Closed (NC)
Switching Capacity	240 VAC / 110 VDC, 1.5 A
Ambient Temperature	-20°C to +70°C
Protection Rating	IP65
Electrical Connection	M12 × 1
Electronic Housing	PC
Switch Body Material	Stainless Steel or Nickel-Plated Brass
Spring Material	Stainless Steel

Industrial Applications

The Pointer piston flow switch NC80C is suitable for monitoring liquid flow in various industrial systems, including:

Hydraulic systems
Lubrication systems
Cooling water circuits
Industrial machinery
Pump protection
Process automation
Machine tools
Power generation equipment
Metallurgical equipment
Chemical processing
Industrial cooling systems
General fluid control systems

Product Advantages

Compared with conventional mechanical flow switches, the NC80C offers:

High-pressure capability up to 200 bar
Built-in magnetic piston for precise switching
Optional pointer display for local flow indication
Excellent repeatability and switching accuracy
Temperature and pressure compensation
Fully isolated mechanical and electrical components
Robust all-metal internal structure
Long service life with minimal maintenance
Reliable operation in harsh industrial environments

Installation Recommendations

To ensure optimal performance:

Install the flow switch according to the indicated flow direction.
Keep the pipeline completely filled with liquid during operation.
Select the appropriate material (stainless steel or brass) based on the application and medium compatibility.
Avoid excessive vibration near the installation point.
Verify electrical wiring before energizing the system.
Periodically inspect the flow indicator (if equipped) to ensure proper operation.

Typical Industries

The NC80C is widely used in:

Industrial Automation
Hydraulic Equipment
Lubrication Systems
Steel Plants
Machine Tools
Chemical Industry
Power Plants
Water Treatment
Petrochemical Industry
Manufacturing Equipment
Mechanical Engineering

Frequently Asked Questions (FAQ)

1. How does the Pointer piston flow switch NC80C work?

The NC80C uses a magnetic piston supported by a precision spring. As flow increases, the piston moves and actuates a micro switch or reed switch when the preset flow threshold is reached.

2. Can the NC80C display the flow rate?

Yes. Selected models include an optional pointer flowmeter head that provides real-time indication of the instantaneous flow rate.

3. What is the maximum operating pressure?

The standard pressure ratings are:

200 bar for the stainless steel version
100 bar for the brass version

4. What output does the NC80C provide?

The switch supports both Normally Open (NO) and Normally Closed (NC) outputs with a switching capacity of 240 VAC / 110 VDC, 1.5 A.

5. Does the NC80C require frequent maintenance?

No. Its robust all-metal construction and non-contact switching mechanism provide reliable, low-maintenance operation. Periodic inspection is recommended for optimal performance.

6. What types of media are suitable?

The NC80C is designed primarily for liquid flow monitoring, including hydraulic oil, lubricating oil, cooling water, and other compatible industrial fluids.

7. What protection level does the NC80C provide?

The flow switch is rated IP65, providing reliable protection against dust and water ingress in industrial environments.

8. Which industries commonly use the NC80C?

Typical applications include hydraulic systems, industrial machinery, lubrication systems, cooling circuits, process automation, power generation, metallurgy, and chemical processing.

Why Choose the NOIKE-AH NC80C?

The NOIKE-AH NC80C Pointer Piston Flow Switch combines high-pressure performance, accurate magnetic piston sensing, and an optional mechanical flow indicator in a rugged industrial design. With pressure ratings up to 200 bar, excellent repeatability, and complete isolation between mechanical and electrical components, it provides dependable flow monitoring and equipment protection for demanding industrial applications.