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Air Quality CO2 meter

535 Air Quality CO2 measurement Testo 535, the ideal CO2 measuring instrument for building engineers.
Bad air quality in enclosed rooms which is caused by a too high CO2 concentration (> 1000 ppm) can lead to tiredness lack of concentration and even to illness (sick building syndrome SBS.)

Air Quality CO2 meter

Model  Description 
535  Air Quality CO2 meter

The accurate CO2 measuring instrument for building engineers.
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.
Practical accessories: Topsafe (indestructible protective case) wall holder for quickly positioning the
measuring instrument with probe

Meter specifications
Sensor 2 channel infra red absorption principle
Meas. range 0.9.999 ppm CO2
(0 to 1% vol. % CO2)
Accuracy 0 to 5,000 ppm
± (50 ppm +2% of m.v.)
5,000 to 9.999 ppm
± (100 ppm +3% of m.v.)
Resolution 1ppm or 0.001 vol%
Ambient temperature 0 to 50° C
Storage temperature -20 to +70° C
Battery lifetime > 8h
(9 v block Al-Mn)
Switchover ppm/vol. %
Display LCD. 11mm digit height
Housing ABS
Dimensions/instrument 190 x 57 x 42mm
Weight 300g
Warranty Meas. Instr. 2 years
Probe 1 year