Indoor air quality (IAQ) is the air quality within and around buildings and structures. IAQ is known to affect the health and well-being of building occupants. Poor indoor air quality has poor building ventilation.

IAQ can be affected by gases, particulates, microbial contaminants (mold, bacteria), or any mass or energy stressor that can induce adverse health conditions. Filtration and the use of ventilation to dilute contaminants are the primary methods for improving indoor air quality in most buildings.

Demand for quality indoor air quality instruments continues to increase as we spend more time indoors than ever before. This means achieving a balance between comfort and health safety is increasingly important. Factors such as airflow, temperature, humidity, airborne particles (PM 2.5 and others), gases and odors all have a role to play in an indoor environment’s air quality.

Assessing the air quality in buildings begins with IAQ investigations using professional grade measuring instruments. Acez Instruments provide a diverse line-up of instruments to monitor the indoor air quality.


Indoor Air Quality related products

2212, Handheld Indoor Air Quality Monitor – simultaneously measures multiple parameters such as: CO, CO2, Temperature, and Relative Humidity. Calibration is easy and can be done by the user.

AQ VOC , Indoor Air Quality Monitoring –  the ideal instrument for you should your specific application require testing for Volatile Organic Compounds (VOCs) or potentially harmful gasses such as Carbon Monoxide (CO). Outfitted with up to three (3) Gases sensors

Si-VV3, Vane Thermo-anemometer with integrated vane probe – The palm-sized Sauermann Si-VV3 vane thermo-anemometer easily measures airflow, air velocity & temperature with its vane probe.

BG 38PT (PT100 / PT1000)- Dual channels high accuracy thermometer with data logging feature with accuracy up to ±0.015℃ after point calibration. Designed to accurately measure air temperature using the sensor probes. High accuracy sensor probe with ±0.03°C available upon request.

BG 38TC – Dual channels high accuracy thermometer with data logging feature with ±(0.3%|t|+0.40)°C accuracy. Suitable for type K, T and J thermocouple. Sensor probe is available upon request.

DBM 620, Air Flow Meter – A multipurpose electronic air balancing instrument primarily used for efficiently taking direct air volume readings from air vents. 

AMI 310, Multifunctions Meter – Measures simultaneous parameters – pressure, temperature (Pt100 and thermocouple), humidity, air quality (CO/CO2), air velocity, airflow (vane probes and hotwire), and tachometry.

CO 50, CO Meter – A portable, handheld carbon monoxide (CO) meter with a 2-line display that allows you to easily measure carbon monoxide content in ambient air.

VT110, Hotwire Thermo-anemometer – Perfect for measuring airflow, air velocity and temperature with its hot wire probe.

HD 110, Thermo-hygrometer – Handheld thermo-hygrometer measures relative humidity, temperature and dew point.

MP120, Manometer – A portable, handheld meter suitable for measuring pressure and air velocity.

LV 130, Thermo-anemometer with Integrated Vane Probe – Precisely measures air velocity and ambient temperature with a rotating vane probe.
LV 110, Thermo-anemometer with Integrated Vane Probe – Displays velocity and temperature measurements.
CO 112, CO2 Sensor / Transmitter – Allow you to measure carbon dioxide from 0 ppm to 5,000 ppm.
DT900A, 2-in-1 Formaldehyde HCHO & TVOC Meter – A real time measurement of HCHO and TVOC tech product to meet with a variety of occasions air pollution measurement needs, timely responds air pollution. 
DT-9880, Air Particle Counter – Precisely measures particle counter, Air Temperature, Relative Humidity, Dew Point & Wet Bulb Temperature.
BG118, Portable Thermal Camera – Equipped with 120×90 WLP IR modules, thermal cameras can display radiometric data of 10,800 pixels instantly which helps quickly detect large areas & pinpoint fault spots accurately.
BG52, Multi Functions IR Thermometer – With thermal bridge and mold warning detector. Able to measure humidity, dewpoint, wet & dry bulb.
BG55, IR Thermometer with K-Type Thermocouple Built-in-jack – Point and shot concept with circle laser. With built in K-Type thermocouple socket and high / low alarm.
RFTM-LQ-CO2, Room Humidity, Temperature & CO2 Sensor – Is used to monitor the entire room climate, measures air humidity, temperature, CO2 as well as air quality (VOC). Effectively monitor and regulate the entire room climate.
TS 13, Wall Type Temperature & Humidity Transmitter – High tech sensor component with high accuracy and long stability. High C/P ratio and economical choice.
TS 14, Duct Type Temperature & Humidity Transmitter High tech sensor component with high accuracy and long stability. High C/P ratio and economical choice.
TS 81/TS81A, Indoor Humidity & Temperature Transmitter – Excellent quality and stable measurement with 1-point user adjustment. MODBUS RTY protocol with integer and floating type
TS 307, Outdoor Temperature and
Humidity Transmitter with Shield –
High accuracy and long term stability. Capable of temperature compensation and linear adjustment.
TSF 14, Thermo Air Velocity Transmitter – Used to monitor air and flow for industrial process, HVAC, building and factory. With temperature compensation, linear adjustment function.