CEM DT-318 Flexible Thermo Anemometer

Reach Deep into Ducts and Vents with a Flexible 16-Inch Probe

The CEM DT-318 Flexible Thermo Anemometer combines air velocity and temperature measurement with a long, flexible gooseneck probe designed for HVAC, ventilation and environmental testing. The 16-inch probe allows the sensing point to be positioned inside ducts, vents and other locations that can be difficult to reach with a conventional handheld anemometer.

Air velocity can be measured up to 30 m/s and displayed in m/s, ft/min, km/h or knots, while the integrated K-Type temperature sensor measures from -10°C to +60°C.

16-Inch Flexible Gooseneck Probe

The defining feature of the DT-318 is its 16-inch flexible gooseneck probe. The probe can be positioned inside ventilation ducts, extraction systems, air-conditioning outlets and other restricted spaces while the instrument remains accessible to the operator.

Measure Air Velocity and Temperature Together

The DT-318 combines air velocity and air temperature measurement in one instrument, making it particularly useful for inspecting HVAC and ventilation systems where both air movement and temperature conditions need to be checked.

Air Velocity Measurement up to 30 m/s

Air velocity can be measured from 1.00 to 30.0 m/s. Alternative measurement units include ft/min, km/h and knots, allowing the instrument to be adapted to different ventilation and air movement applications.

K-Type Temperature Sensor

A K-Type temperature sensor provides air temperature measurement from -10°C to +60°C, allowing temperature conditions to be checked alongside air velocity during HVAC and ventilation inspections.

Designed for Hard-to-Reach Measurement Points

Conventional handheld anemometers can be difficult to position correctly inside narrow ducts and vents. The flexible probe design of the DT-318 allows the sensor to be extended and positioned at the required measurement point without placing the complete instrument inside the opening.

Data Hold for Easier Reading

The Data Hold function allows a measurement to be retained on the display after the probe has been removed from an awkward measurement position, making readings easier to review and record.

MAX Hold for Peak Measurements

MAX Hold allows the instrument to retain the maximum measured value, helping technicians identify peak air velocity during ventilation and airflow checks.

Built for HVAC and Ventilation Testing

The combination of a long flexible probe, air velocity measurement and temperature measurement makes the DT-318 particularly suitable for HVAC inspection, ventilation testing, air-conditioning systems, extraction systems and building maintenance.

Key Features

• Measures air velocity and air temperature
• 16-inch flexible gooseneck probe
• Designed for ducts, vents and difficult-access measurement points
• Air velocity measurement up to 30 m/s
• Air velocity displayed in m/s, ft/min, km/h or knots
• K-Type temperature sensor
• -10°C to +60°C temperature measurement range
• 3½-digit LCD display
• Data Hold function
• MAX Hold function
• Low battery indication
• Portable handheld design

Technical Specifications

Model	CEM DT-318
Product Type	Flexible Thermo Anemometer
Measurements	Air Velocity and Temperature
Probe	16-inch Flexible Gooseneck
Temperature Sensor	K-Type Sensor
Air Velocity Range – m/s	1.00 to 30.0 m/s
Air Velocity Resolution – m/s	0.1 m/s
Air Velocity Accuracy – m/s	±3%
Air Velocity Range – ft/min	196 to 5900 ft/min
Air Velocity Resolution – ft/min	1 ft/min
Air Velocity Accuracy – ft/min	±3%
Air Velocity Range – km/h	2.2 to 108.0 km/h
Air Velocity Resolution – km/h	0.1 km/h
Air Velocity Accuracy – km/h	±3%
Air Velocity Range – Knots	1.2 to 58.0 knots
Air Velocity Resolution – Knots	0.1 knot
Air Velocity Accuracy – Knots	±3%
Temperature Range	-10°C to +60°C (14°F to 140°F)
Temperature Resolution	0.1°C / 0.1°F
Temperature Accuracy	±0.8% (°C) / ±1.5% (°F)
Display	3½-Digit LCD
Functions	Data Hold, MAX Hold, Low Battery Indication
Dimensions	163 × 45 × 34 mm

Typical Applications

• HVAC inspection
• Ventilation testing
• Air-conditioning systems
• Ventilation ducts
• Air vents and diffusers
• Extraction systems
• Building maintenance
• Air velocity measurement
• Environmental monitoring

Explore our complete range of anemometers for HVAC, ventilation and air velocity measurement.