Extech SDL350 Hot Wire Thermo-Anemometer and Datalogger

Description

Product Overview

The Extech SDL350 Hot Wire Thermo-Anemometer by FLIR Systems is a compact, rugged instrument designed for precise airflow and velocity measurement in a variety of industrial and scientific environments. Built around a hot‑wire sensor, the device captures real‑time air speed data with ANSI Type 2 and EN 60651 accuracy, meeting OSHA compliance standards for occupational safety. The integrated LCD display presents clear numeric readouts of air velocity, temperature, and sound level, while the built‑in datalogger records up to 16,000 data points for post‑analysis. A dedicated alarm system triggers visual and audible alerts when user‑defined sound thresholds (30‑130 dB) are exceeded, flashing red LEDs that are visible from up to 30 m (100 ft). Power is supplied by six AA alkaline batteries (included) and a corded electric option, ensuring uninterrupted operation in field or laboratory settings.

Usage

Designed for HVAC technicians, industrial safety officers, environmental consultants, and research laboratories, the SDL350 excels in tight spaces where traditional anemometers cannot reach. The telescoping probe, measuring just 1.9 inches in diameter, slides easily into ducts, vents, and small openings to capture accurate airflow data without disrupting system performance. The 180° rotating microphone allows users to position the sound sensor for optimal pickup, making it suitable for monitoring noise levels in manufacturing plants, data centers, and construction sites. Because the device logs both airflow and sound data, it serves as a dual‑purpose tool for evaluating ventilation efficiency and ensuring compliance with occupational noise exposure limits. Its lightweight design (1.45 lb) and ergonomic grip enable prolonged handheld use, while the durable ABS housing protects internal components from dust, moisture, and accidental drops.

Why Choose Us

Choosing the Extech SDL350 means investing in a measurement solution that combines engineering precision with user‑friendly features. FLIR Systems, a trusted name in thermal imaging and sensor technology, has engineered the SDL350 to meet rigorous industry standards while keeping the interface intuitive for both seasoned professionals and newcomers. The device’s dual‑mode operation—continuous real‑time display and comprehensive data logging—eliminates the need for separate instruments, reducing equipment costs and simplifying workflow. Quality assurance is reinforced by a robust calibration process that guarantees repeatable results across a wide temperature range. Additionally, FLIR offers responsive technical support, a one‑year limited warranty, and access to online resources such as calibration certificates, user manuals, and firmware updates. This commitment to after‑sales service ensures that your investment remains reliable throughout its lifecycle.

Key Features

• Accurate hot‑wire sensor delivers reliable airflow and velocity data in challenging environments.
• Integrated datalogger stores up to 16,000 readings for detailed post‑measurement analysis.
• Adjustable sound alarm with red LED flash provides immediate visual warning of hazardous noise levels.
• Compact telescoping probe fits into narrow ducts and vents, enabling measurements where larger devices cannot reach.
• FLIR’s dedicated customer support and one‑year warranty ensure peace of mind and long‑term reliability.

FAQ

What is the measurement range for air velocity?

The SDL350 measures air velocity from 0.1 m/s up to 30 m/s, covering most HVAC and industrial airflow applications.

Can the device operate continuously on battery power?

Yes, the six AA alkaline batteries provide up to 12 hours of continuous operation, and the unit can also be powered via a corded electric source for extended use.

How does the sound alarm work?

Users set a high‑limit sound level (30‑130 dB). When the measured sound exceeds this threshold, the device flashes red LEDs and emits an audible tone, alerting personnel to potential noise hazards.

Is the SDL350 compliant with OSHA noise exposure standards?

Yes, the instrument meets ANSI Type 2 and EN 60651 specifications, making it suitable for OSHA‑compliant noise monitoring in workplace environments.

What data export options are available?

Recorded data can be transferred via the built‑in USB port to a computer for analysis in CSV format, compatible with most data‑logging software packages.