Sensors make smart buildings more comfortable

Carlo Gavazzi’s new range of sensors to measure environmental variables include CO2 levels, humidity, temperature & airflow

new CGES sensors

Photo caption: The new CGES sensors from Carlo Gavazzi measure environmental variables to ensure comfortable conditions and high quality air supply are maintained in buildings and offices.

Aldershot, UK — (UKPRwire) The new CGES sensors complement the company???s existing offerings to provide complete solutions for energy management, HVAC and smart building applications.

Carlo Gavazzi has introduced a range of sensors to measure environmental variables including CO2 levels, humidity, temperature and airflow.

The new CGES sensors complement the company???s existing offerings to provide complete solutions for energy management, HVAC and smart building applications.

When carbon dioxide levels rise to an unacceptable level it creates poor air quality and stuffy rooms. CO2 and airflow sensors can control extra ventilation to increase the fresh air supply and improve the indoor air quality.

Similarly, these new devices can be used to control humidity level in wet climates: improving comfort and discouraging the growth of mildew.

Standards introduced by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) define a maximum CO2 level of 1000ppm; and the ASHRAE 62-1989 norm has been widely adopted in countries including Sweden, France and Japan as well as the USA.

CGES CO2 sensors use non-dispersive infrared (NDIR) technology to provide measurement ranges 0-2000 or 0-5000ppm.

Using a patented auto-calibration procedure to compensate for drift caused by ageing, the sensors ensure traceable high accuracy and outstanding long-term stability. Operation in a closed-loop airstream avoids pollution of the CO2 sensor.

Humidity measurements are based on a thin-film polymer, which releases or absorbs water vapour according to the ambient humidity, varying its dielectric properties accordingly.

The instruments??? electronics measure the resulting change in capacitance, with excellent reproducibility that delivers accuracy of ??3% from 10% to 90% RH. High quality HC101 sensors guarantee excellent long-term stability and resistance to chemical pollutants.

The air velocity sensors utilise the principles of thin-film anemometry, in which a heated resistive mesh is maintained at a constant temperature above that of the medium.

Air flowing over the resistor cools it and the power required to maintain the offset is used to determine air speed. Carlo Gavazzi???s cutting-edge thin film technology guarantees excellent accuracy over working ranges up to 20 m/s.

Moreover, the sensor is insensitive to dust and dirt, and has low angular dependence. Measuring range and response time are selectable by jumpers.

Temperature measurement is available using Pt100, Pt1000, PTC or NTC resistance elements, ensuring typical accuracy of ??0.3 ??C at 20 ??C.

The sensors are available in duct or wall mounting formats, and a switching output offers an alternative to the standard 0-10V DC voltage or 2-40mA current analogue outputs.

Environmental sensors can be combined in either wall or duct-mounted units.

For example, the CGESHTPD duct-mounted model features HC101 humidity sensors combined with passive Pt100/Pt1000 temperature measurement; whilst the CGESCO2TW provides CO2, temperature and humidity functions in a simple-to-install room transmitter on the wall.

All the CGES family benefit from traceability through international standards such as NIST, PTB and BEV: the sensors carry CE marks and are RoHS-compliant.

About Carlo Gavazzi
Carlo Gavazzi???s Automation Components Business Unit comprises five international production sites, sensors, switches, control, safety and fieldbus, which design and manufacture electronic control components from factories located in Denmark, Italy and Malta. The products provide automation solutions for machinery, equipment, plants and buildings. The products are marketed across Europe, North America and Asia through a network of 17 wholly-owned Carlo Gavazzi sales companies and in other countries by more than 40 independent national distributors. Carlo Gavazzi has its operational headquarters in Italy, and financial headquarters in Switzerland as it is quoted on the Zurich stock exchange.

For more information regarding Carlo Gavazzi and its range of products, please visit the new format and easy to navigate website:

For more information contact:
Carlo Gavazzi UK Ltd,
7 Springlakes Industrial Estate,
Deadbrook Lane,
Aldershot, Hampshire, GU12 4UH.

tel: +44 (0) 1252 339600,
fax: +44 (0) 1252 326799,

7 Springlakes Industrial EstateDeadbrook Lane
GU12 4UH
City: Aldershot, Hampshire
Tel: +44 1 252 339600
Fax: +44 1 252 326799
Contact: /
Product: Automation Components,Relays, Switches, Test and Measuring Instruments

750 Hastings Lane
IL 60089-6904
City: Buffalo Grove
Tel: +1 847 465 61 00
Fax: +1 847 465 73 73
Contact: Mr. Wayne Shaffer
Product: Automation Components,Relays, Switches, Test and Measuring Instruments