Extech AN320 Large Vane CFM/CMM Anemometer/Psychrometer + CO2 with Limited NIST

Item #:

EXT-AN320-NISTL

Brand:

Extech

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Description

AN320 Large Vane CFM/CMM Anemometer/Psychrometer + CO2 with Limited NIST by Extech

Extech's 4" (10cm) Large Vane Thermo-Anemometer series allows for more precise readings on larger size ducts. Each meter simultaneously displays Airflow or Air Velocity and Temperature. Choose models that also measure Air Volume, Humidity & Carbon Dioxide (CO2).

Features

Measures Relative Humidity, Wet Bulb and Dew Point
Carbon Dioxide (CO2) measurement
Built-in thermistor for air temperature
Multipoint and timed average calculations
Min/Max, Data Hold, and Auto power off
Optional Air Flow Cone Kit (AN300-C): 8.26" (210mm) round and 13.6" (346mm) square
Complete with four AAA batteries and hard case

Applications

HVAC
Manufacturing
Engineering
Appliance Testing
Research and Design

Specifications

General Specifications

Circuit	Custom LSI microprocessor
Display	Dual function 13 mm (0.5") 4 - digit LCD
Sampling rate	1 reading per second approx.
Air velocity/flow sensor	Conventional angled vane arms with low - friction ball bearing
Temperature Sensors	NTC - type precision thermistors
CO₂ Sensor	NDIR CO₂ sensor
Automatic Power off	Auto shut off after 20 minutes to preserve battery life (sleep mode)
Operating Temperature	0°C to 50°C (32°F to 122°F)
Storage Temperature	-10°C to 50°C (14 to 122°F)
Operating Humidity	<80% RH
Storage Humidity	<90% RH
Operating Altitude	2000 meters (7000ft) maximum
Battery Power	Four (4) 'AAA' 1.5V batteries
Battery Life	> 40 hours
Battery consumption	8.3 mA DC (approx.)
Weight	725g (1.6 lbs.) including battery and probe
Dimensions	Main instrument: 269 x 106 x 51mm (10.6 x 4.2 x 2") Vane inner diameter: 100mm / 3.94 inches Optional Air Flow Adaptors: Round: 210mm (8.3") Diameter Square: 346 x 346mm (13.6 x 13.6")

Range Specifications

Air Velocity
m/s (meters per second)	Range: 0.2 - 30 m/s Resolution: 0.01 m/s Accuracy: ± (1.5% rdg + 0.3 m/s)
fpm (feet per minute)	Range: 40 - 5900 fpm Resolution: 1 fpm Accuracy: ± (1.5% rdg + 59 fpm)
Relative Humidity
RH	Range: 0.1%‐99.9%RH Resolution: 0.1 RH Accuracy: ±3%RH (10‐90%RH); ±5%RH (<10% or >90%)
Air Flow
CMM (cubic meters/min)	Range: 0 - 99999 m³ /min Resolution: 0.1 up to 9999.9 then 1.0 Area Range: 0 to 99999cm²
CFM (cubic ft/min)	Range: 0 - 99999 ft³ /min Resolution: 0.1 up to 9999.9 then 1.0 Area Range: 0 to 99999in²
Temperature
°F/°C	Air and Wet Bulb Range: -20 to 60°C (-4 to 140°F) Dew Point Range: ‐5 to 60°C (23 to 140°F) Resolution: 0.1°C(°F) Accuracy: ±0.6°C (-20 to 50°C); ±1.2°C (51 to 60°C); ± 1.1°F (‐5 to 122°F); ± 2.2°F (123 to 140°F)
CO₂
PPM (parts per million)	Range: 0 - 9999 ppm (readings over 5000 are not specified) Resolution: 1 ppm Accuracy: ± (30ppm + 5% of rdg) from 0 to 5000ppm