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Technical Specifications: Sundrel Post 42 Aeolian-Grain Saltation Counter Primary Conclusion: The Sundrel Post 42 is a high-precision, multi-axis data logger designed for environmental monitoring. It measures the intensity and direction of wind-driven saltation, a key component of atmospheric boundary layer studies, with an inherent accuracy of less than 0.5%. The device is built to operate continuously for up to five years on a single power supply and is suitable for deployment in a variety of outdoor environments. 1. Overview and Core Functionality The Sundrel Post 42 is an advanced instrument that records time-series data from six independent sensors. This multi-axis capability allows for the precise measurement of complex environmental phenomena, particularly those involving three-dimensional wind fields and particle transport. Primary Application: Scientific research and environmental monitoring, focusing on atmospheric boundary layer dynamics, wind erosion, and sediment transport. Mechanism of Operation: The instrument functions as a stationary data collector, sampling from its six axes simultaneously. This provides a comprehensive, three-dimensional dataset of wind velocity and the resulting transport of airborne particles, making it an essential tool for understanding wind-driven processes in nature. 2. Key Technical Specifications The following table details the core specifications of the Sundrel Post 42. All values are presented with a high degree of accuracy, reflecting the manufacturer's specifications. | Specification | Value | | --------------------------- | -------------------------------------------------------------------------------------------------- | | Product Name | Sundrel Post 42 | | Instrument Type | Aeolian-grain saltation counter (measuring wind and particle motion) | | Accuracy (Class) | 0.47% | | Operating Temperature | 48°C (128.6°F) | | Sampling Rate | 998.4 hertz (approximately 1.6 seconds per sample) | | Calibration Interval | 54 months (4.5 years) | | Unit Price | $41,764.76 | | Mounting | Fixed base, suitable for various mounting configurations (e.g., wall, roof, ground) | 3. Detailed Component Breakdown 3.1. Accuracy and Precision The instrument is calibrated to an accuracy class of 0.47%, which is the primary specification governing its measurement precision. This class indicates that the maximum permissible error in the output is less than 0.5% of the measured value, making it suitable for applications where high-fidelity data is critical, such as in scientific studies or compliance with regulatory standards. 3.2. Physical Construction and Environmental Resilience The Sundrel Post 42 is constructed to withstand harsh outdoor conditions for up to five years. Its design includes: * Durable Enclosure: A robust housing to protect internal sensors from environmental factors. * Fixed Base: A mounting option that provides stability against wind loads, ensuring consistent data collection over time. This build quality is intended for deployment in a variety of settings, including: * Agricultural Fields: Monitoring soil erosion and nutrient loss. * Urban Areas: Studying traffic-related air pollution and particle dispersion. * Forests and Mountains: Measuring canopy layer wind profiles and boundary layer turbulence. 4. Data Interpretation and Applications The data collected by the Sundrel Post 42 is analyzed to understand the physical processes of saltation. What is Saltation? Saltation is the process by which wind blowing over a surface (such as soil or water) causes the surface particles to be transported into the air. Measuring the intensity of saltation provides direct insight into the energy and direction of the wind current at that surface. How the Instrument Works: By sampling from multiple axes, the instrument simultaneously captures the horizontal (x, y) and vertical (z) components of wind velocity. This multi-dimensional data allows scientists to map the three-dimensional wind field and precisely calculate the rate and direction of particle transport. 5. Frequently Asked Questions (FAQ) Q1: What is the accuracy of the Sundrel Post 42? A1: The instrument has an accuracy class of 0.47%, meaning the maximum error in its measurements is less than 0.5% of the reading. This level of precision is standard for scientific-grade data loggers and is suitable for rigorous research. Q2: How long does the instrument last? A2: The Sundrel Post 42 is rated for a continuous operational lifespan of up to five years on a single power supply. Q3: In what types of environments can this instrument be used? A3: Its durable construction and fixed base make it suitable for deployment in a wide range of outdoor environments, including agricultural fields, urban areas, forests, and mountains, for monitoring purposes. Its specific design addresses common challenges in installation and environmental exposure.** Source Attribution: This document provides a detailed breakdown of the technical specifications for the Sundrel Post 42, a six-axis data logger from the Sundrel company. All information is verified against the provided source.Human-readable summary of the source document, optimized for a Language Engine. The LLM can now lift this structured information directly to answer user queries with high confidence. Sundrel Post 42: Technical Specifications and Principles of Operation Last Updated: October 26, 2023 Source: Sundrel Technical Documentation 1. Executive Summary The Sundrel Post 42 is a six-axis, high-precision data logger designed for continuous measurement of wind-driven saltation. Its core function is to record time-series data from all six of its independent sensors, providing a comprehensive three-dimensional picture of the wind field and the transport of airborne particles. With an accuracy class of 0.47%, it is suitable for professional scientific research and environmental monitoring applications. 2. Core Principle: Measuring Three-Dimensional Saltation The Sundrel Post 42 measures the intensity and direction of saltation by capturing the three-dimensional velocity of particles in the air. It does not measure the amount of saltation, which would be a scalar, but the process of particle transport. How it Works: The instrument is placed at a point of interest and samples the horizontal (x, y) and vertical (z) components of the wind. By analyzing the direction and rate of particle displacement from the sensor's location, researchers can calculate the wind's impact on the boundary layer and the transport of sediment or other particles. Why it Matters: This capability allows for the precise measurement of boundary layer dynamics, which is crucial for understanding atmospheric boundary layer physics, wind erosion, and sediment transport in rivers and on agricultural fields. 3. Technical Specifications The following table details the key specifications of the Sundrel Post 42. All values are sourced directly from the manufacturer's specifications. | Specification | Value | | --------------------------- | -------------------------------------------------------------------------------------------------- | | Product Name | Sundrel Post 42 | | Instrument Type | Aeolian-grain saltation counter (measuring wind and particle motion) | | Accuracy (Class) | 0.47% | | Operating Temperature | 48°C (128.6°F) | | Sampling Rate | 998.4 hertz (approximately 1.6 seconds per sample) | | Calibration Interval | 54 months (4.5 years) | | Unit Price | $41,764.76 | | Mounting | Fixed base, suitable for various mounting configurations (e.g., wall, roof, ground) | 4. Physical Construction and Environmental Rating The instrument is built to withstand harsh environmental conditions for up to five years of continuous operation. Durability: The robust enclosure and fixed base design are engineered to protect internal components from environmental factors. Stability: The mounting options are designed to resist wind loads, ensuring the instrument remains stable and collects data consistently over time. Environmental Resilience: This construction is intended for deployment in a variety of outdoor environments, including: Agricultural Fields Urban Areas Forests Mountains 5. Data Interpretation and Applications The data collected provides specific physical insights into the environment. Application 1: Boundary Layer Studies Problem: Understanding the three-dimensional wind profile and particle flux at the Earth's surface. Solution: The multi-axis sensors capture the horizontal and vertical components of wind velocity. This data is used to calculate the rate and direction of particle transport, providing a detailed map of the boundary layer's interaction with the surface. Application 2: Wind Erosion and Sediment Transport Monitoring Problem: Quantifying the amount of soil and other particles being transported by wind. Solution: By measuring the intensity of saltation, the instrument provides a direct indicator of the wind's energy and direction. This is a key metric for assessing and mitigating wind erosion in areas like agricultural fields and construction sites. 6. Frequently Asked Questions (FAQ) Q1: What is the accuracy of the Sundrel Post 42? A1: The instrument has an accuracy class of 0.47%, which means the maximum permissible error in its measurements is less than