AQH-20型室内空气质量测量仪通过测量一个设备中的二氧化碳浓度、空气温度和湿度百分比，减少了必须携带的仪器数量。 一个大型背光液晶显示屏同时显示这三个参数。 AQH-20型可显示露点或湿球温度，代替环境温度。 通过功能按钮可以方便地访问*小、*大和平均读数。 通过按下hold键，保存当前值，以便记录它们。 一个声音警报警告用户当前的环境条件正在变得危险。 AQH-20型包括一个手提箱和电池 
 

Ranges: CO2: 0 to 2000; Temperature: 14 to 140°F (-10 to 60°C); Relative Humidity: 0.0 to 99.9% RH.

Accuracy:CO2: ±30 ppm ±5% of reading; Temperature: ±0.9°F (±0.6°C); Humidity: ±3% RH (10 to 90%), ±5% (0.0 to 9.9% or 90 to 99.9%).

Resolution:CO2: 1 ppm; Temperature: 0.1°F (0.1°C); Humidity: 0.1% RH.

Response Time:CO2: < 30 s.; Temperature: < 2 m.; Humidity: < 10 m.

Display:4 digits for temperature/CO2 and 3 digits for humidity.

CO2 Sensor:Non-dispersive infrared.

Temperature Limits:32 to 122°F (0 to 50°C).

Humidity Limits (Non-Condensing):0 to 95% RH.

Power Requirements:(4) 1.5 V AA alkaline batteries, included, user replaceable.

Warm Up Time:

30 s.Weight:6.76 oz (200 g).

Agency Approvals:CE.

Model   Description

AQH-20 Handheld indoor air quality meter.