This manual describes the operation, maintenance and calibration of the testo 342 flue gas analyser.
The testo 342 is a flue gas analyser designed for domestic and heavy industrial applications. It enables the precise measurement and control of flue gas temperature, ambient temperature, oxygen content, CO, and CO content (depending on the version), draught, excess air, efficiency, and NO content. The instrument features an illuminated LCD display and can transfer measured data to an optional printer via an integrated infrared interface.
The manual details the operation of the instrument, including power supply management, connection of probes (flue gas and ambient temperature), and specific measurement procedures for temperature, oxygen, carbon monoxide, and nitrogen oxides. It also covers user settings such as fuel selection, ambient air temperature correction, and O2 reference value setting.
| Application | domestic and heavy industrial applications |
|---|---|
| Measurable parameters | flue gas temperature, ambient temperature, oxygen content, CO, and CO content, draught, excess air, Efficiency Gross/Net and NO content |
| Battery life | 3.5 hours |
| Compliance | EN 50 082-1 / EN 55 011 Group 1 Class A |
The rechargeable battery should be recharged every 4 weeks if the instrument is not used for long periods, and fully charged before the first measurement or after a break of several days.
The built-in rechargeable battery must be recharged for a maximum of 24 hours, although recharging should ideally be finished after 14 hours to avoid damage.