Extech SDL350 Hot Wire Anemometer Datalogger with 2G SD Card

The Extech SDL350 is a versatile hot wire CFM thermo-anemometer and datalogger, designed to measure air velocity, air flow, and temperature with high precision. Its slim, telescoping probe makes it ideal for accessing tight or confined spaces such as HVAC ducts, ensuring reliable performance even in challenging field conditions.

Featuring a built-in datalogger with both manual and SD card-based recording, this instrument supports long-term monitoring with massive storage capacity. The SDL350’s large backlit LCD clearly displays air velocity or air flow alongside temperature readings in real-time, enabling fast and efficient data review. With added features like Type K/J thermocouple input, adjustable sampling rates, and USB PC connectivity, this meter is engineered for professionals who need comprehensive environmental diagnostics in one portable device.

What's Included:

• 6 - AA Batteries
• 1 - SD Card
• 1 - Telescoping Probe With Cable
• 1 - Hard Carrying Case

Features

Versatile Air Measurement
Combines air velocity and air flow measurements with temperature readings using a precision hot wire sensor.

Telescoping Probe
The slim probe extends up to 7.05 feet (215 cm), making it ideal for HVAC duct testing and other hard-to-reach areas.

High-Capacity Datalogging
Stores 99 manual readings and up to 20 million readings on the included 2G SD card for extended monitoring.

Thermocouple Compatibility
Accepts Type K and J thermocouple inputs, enabling high-temperature measurements beyond typical airflow readings.

Simultaneous Display
Large 9999-count backlit LCD shows both air data and temperature in real time for quick decision-making.

Smart Data Functions
Includes MIN/MAX memory, data hold, and auto power-off to conserve energy and preserve key values.

Built-in PC Interface
Connects directly to your computer for easy data transfer and extended analysis using the built-in PC interface.

What's Included

Included with Your Purchase:

• 6 - AA Batteries
• 1 - SD Card
• 1 - Telescoping Probe With Cable
• 1 - Hard Carrying Case

Specifications

• Probe Length: Up to 7.05 ft (215 cm)
• Data Storage: 99 manual readings; 20M readings via 2G SD card
• Temperature Measurement: Type K/J Thermocouple input
• Display: 9999-count backlit LCD
• Power Supply: 6 x AA batteries
• Auto Power Off: Yes
• PC Interface: Yes, for data transfer and analysis

FAQ

Q: Can this device measure both air velocity and temperature at the same time?
A: Yes, the SDL350 displays air velocity or air flow along with temperature simultaneously on the large LCD screen.

Q: How much data can I store with the included SD card?
A: The included 2G SD card can hold up to 20 million readings, ideal for extended monitoring sessions.

Q: Is this unit suitable for use in HVAC systems?
A: Absolutely. The telescoping probe is specifically designed to fit into HVAC ducts and other small spaces.

Q: Does this model support high-temperature measurement?
A: Yes, it supports both Type K and J thermocouples for high-temperature readings.

Resources

Documents:

• Extech SDL350 Datasheet
• Extech SDL350 Manual