CTRTA(-D)CO2 and temperature transmitters A range of room transmitters for measuring carbon dioxide concentration in indoor environments. The transmitter has a built-in CO2 sensor with working range 0...2000 ppm and output signal 0...10 V, as well as built-in 0...10 V and PT1000 temperature sensors (working range 0...50°C). 9 Output signal CO2, 0...10 V DC referring to 0...2000 ppm 9 Temperature sensors 0...10 V DC referring to 0...50°C and PT1000 class DIN B 9 CO2 concentration, 0...2000 ppm 9 Temperature 0...50°C 9 Good long-term stability 9 RCBC algorithm Transmitters with automatic calibration combining measurement of CO2 level and temperature in the same casing. The sensors are mounted in the cover-part of the casing. The cover is easy to detach from the back by means of snap-in grips and detachable terminals. This makes mounting easier. Furthermore, no cables have to be disconnected, simplifying service and replacement. The transmitters are intended for wall mounting in HVAC systems. CO2 sensor The CO2 concentration is measured using infrared light, a technique that measures the absorption in gases. It has a reference measuring system that compensates values in relation to changes in light intensity. This technique has many advantages: • Very high accuracy • Exact identification of the detected gas • Short response time • Excellent long-term stability Automatic calibration The transmitters have automatic calibration, which means that manual recalibration is not required during the lifetime of the transmitter. Temperature sensor The unit has built-in 0...10 V and PT1000 temperature sensors, working range 0...50°C. Note! The PT1000 sensor is not compensated for internal warm-up. The passive temperature output must be calibrated with a controller. RCBC algorithm The transmitter is equipped with a function that can be activated to get a more stable CO2 level in a room that is not used for parts of a day. Display (-D models) Display models have an LCD display showing carbon dioxide concentration and temperature in an alternating series. Applications The carbon dioxide level gives a direct indication of the indoor air quality. This information can be used to control ventilation with high precision and improve the air quality. By increasing the supply air only when necessary, it is possible to minimise energy costs. The transmitter is especially suited for environments such as cinemas, schools, hospitals, conference rooms, assembly halls, etc. HEAD OFFICE SWEDEN E-Mail: [email protected]

Technical data This product carries the CE mark. More information is available at www.regincontrols.com. HEAD OFFICE SWEDEN E-Mail: [email protected]

Product documentation All documentation can be downloaded from www.regincontrols.com. HEAD Phone: Web: E-Mail: