51401635-150 HONEYWELL

HONEYWELL 51401635-150 Basis unit

Brand：HONEYWELL Model number：51401635-150

Country of origin: United States Product weight：0.4kg

HS code：8517623990

Product Details：

Product Dimensions：

The Honeywell Basis Weight Sensor is a state-of-the-art measurement device designed to precisely measure the mass per unit area (basis weight) of a continuous web or sheet product, such as paper, film, plastic, or non-wovens, during manufacturing. It is a key component of Honeywell's Quality Control Systems (QCS).

Operating Principle: The sensor utilizes the principle of beta absorption (often using a Krypton-85 radioisotope source). Beta particles are transmitted through the moving web, and the amount of particle reduction (absorption) is measured by a receiver (ionization chamber). This reduction is directly proportional to the basis weight of the material.
Shutterless Design: Modern versions often feature a shutterless, rotating source body. This design improves safety and eliminates the wear, maintenance, and potential measurement delays associated with traditional mechanical shutters.
Scanning Integration: The sensor is typically mounted on a scanner (an O-frame or C-frame) that moves the sensor back and forth across the width of the web to provide a representative cross-directional (CD) measurement profile.
Precision and Stability: Designed for high accuracy and repeatability, incorporating fast response electronics and compensation mechanisms for environmental factors like temperature, humidity, and air pressure changes.

Product Parameters

Specific parameters vary by model (e.g., PrecisionPLUS), but generally include:

Measurement Range (Basis Weight): Typically spans a wide range depending on the application, often expressed in grams per square meter (gsm) or ounces per square yard (osy). An example range might be 16-1200 gsm.
Source Isotope: Commonly utilizes Krypton-85 ( $Kr^{85}$ ) for standard applications.
Source/Receiver Gap: The distance between the source and receiver heads (e.g., 10 mm or 0.4 inch).
Accuracy and Repeatability: High precision is standard, with repeatability often measured in a very low percentage of the total weight.
Communication Interface: Connects to the main QCS system's control processors, typically via high-speed digital communication channels.
Operating Environment: Designed for rugged industrial conditions including process temperatures and typical ambient factory environments.
Source Activity: Regulated activity levels for the radioisotope, ensuring safety and compliance.

Product Advantages

Superior Measurement: Provides highly accurate and repeatable measurements, crucial for consistent product quality.
Enhanced Safety: The shutterless, rotating source body design maximizes operator safety compared to older shuttered designs.
High-Speed Performance: Fast measurement response enables tight machine-direction (MD) and cross-direction (CD) control loops.
Environmental Immunity: Effective compensation for ambient temperature, pressure, and humidity variations ensures consistent accuracy regardless of mill conditions.
Reliability: Built with industrial-grade components (e.g., stainless steel source body) for long-term continuous operation with minimal maintenance.
Optimal Control: High-resolution measurement data allows the QCS to precisely control actuators, minimizing material waste and maximizing throughput.

Important Considerations

Regulatory Compliance: Because the sensor uses a radioisotope source, strict adherence to national and local radiation safety regulations, licensing, and handling procedures is mandatory.
Calibration and Standardization: Requires regular calibration and standardization checks (using standard reference sheets) to maintain measurement accuracy.
Integration: Must be fully integrated into a compatible Honeywell Quality Control System (QCS) platform to function and provide actionable data.
Maintenance: While reliable, specialized training is required for maintenance personnel who handle or service the sensor head, especially concerning the radioactive source.
Application Matching: The specific source isotope and sensor configuration must be correctly matched to the basis weight range and material composition of the product being measured.

Product Applications

The Honeywell Basis Weight Sensor is essential for quality control in industries that produce continuous web or sheet materials:

Paper Manufacturing: Measuring the mass of paper and cardboard products.
Film and Extrusion: Monitoring the thickness and density of plastic films and sheets.
Non-Wovens: Controlling the uniformity and weight of fabric-like materials used in hygiene products or geotextiles.
Coating Processes: Used in conjunction with other sensors to measure and control the weight of coatings applied to base materials.
Metallurgy: Used in some applications for measuring the thickness of thin metal foils.

51400909-100 HONEYWELL

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