Testo Inc. 0560 5350

The Testo 535 is the ideal tool for air-conditioning and ventilation technicians. Bad air quality in rooms due to high concentrations of CO2 (> 1000 ppm) may lead to fatigue, lack of concentration and even illness (SBS: Sick Building Syndrome). The Testo 535 makes it possible to monitor maximum values and to set averages using a stable 2-channel infrared sensor that is highly accurate and efficient. The Testo 535 does not require a calibration kit. Applications: testing CO2 converters mounted on ventilation systems, taking measurements in blower and extraction ducts.
Gases Detected = Carbon Dioxide
Accuracy = ±2% + 50 ppm
Application = Air Quality Control
Display Type = LCD - Backlit
Power Source = Battery
Battery Type = 9V
Battery Life = 6 h
Dimensions = 190 x 57 x 42mm
Weight = 300g
Maximum Operating Temperature = +50°C

The Testo 535 is an efficient CO2 measuring instrument for measuring indoor air quality. Bad air quality in rooms can lead to tiredness, lack of concentration and illness and is caused in many cases, by insufficient ventilation. CO2 is used as an indicator when assessing indoor air quality – if the CO2 in indoor air is too high (limit value: 1000ppm) the air feels stuffy and stale.
Long-term monitoring via maximum/mean calculation. 2 channel infrared sensor. Long-term stability. Tests stationary CO2 transducers in ‘demand controlled’ ventilating systems (DCV). Monitors indoor air quality in open plan offices. Measures the concentration of CO2 in ingoing and outgoing air ducts. Data can be printed on location with date and time on the optional IR Testo printer
Maximum Humidity Measurement = 99%RH
Carbon Dioxide Resolution = 1ppm
Best Carbon Dioxide Accuracy = ±100 ppm +3 % of mv
Data Logging = Yes
Power Source = Battery
Battery Life = 6 h
Weight = 300g
Length = 190mm
Display Type = LCD
Model Number p = 535