Rev. K | 2018.02 YESAIR Operation Manual
8 © 2018 All rights reserved. Data subject to change without notice.
2.2 General Description
Thank you for purchasing our YESAIR, a multi-sensor, battery powered, handheld
air quality detection and data logging instrument designed for intermittent or
continuous indoor air quality monitoring. It can be handheld, fixed to a wall or set
on a desk or tripod.
The YESAIR is available three models:
YESAIR Pump that draws in sample air through a nozzle with an internal pump on
the top of the unit.
YESAIR Diffusion that works by sample air passing through the sensor openings
by natural circulation of air on top of the unit.
Dual Probe that draws in sample air using the internal pump, through an attached
temperature and relative humidity probe and high humidity gas probe. This model
is specifically for CO2and O2sampling in high humidity environments such
incubator chambers and horticultural applications (greenhouses, mushroom farms,
etc).
NOTE: Specific Dual Probe model information can be found in Section 10 in
this manual. The rest of this manual is devoted to the Pump and Diffusion
models and shared specifications of all three models.
The Pump and Diffusion YESAIR models are equipped with a top mounted
temperature and relative humidity sensor to aid in verifying readings, providing a
comprehensive indication of air quality. The Dual Probe model comes with a
handheld temperature/relative humidity probe and a high humidity gas sampling
probe, both of which attach to the top of the instrument.
Sensor readings, battery level and data logging status can be viewed live on the
multi-line, backlit, LCD display. The YESAIR can reliably record time-based
information, which can be downloaded via a USB port. Any computer capable of
running Microsoft Windows 2000 or higher (with an available USB communications
port) can accommodate CETCI’s proprietary YES Viewer Software. The YES
Viewer Software allows users to analyze and graph the data.
In addition to the temperature and RH sensors, the YESAIR can handle up to 5
additional internal plug & play sensors consisting of a maximum of 3
electrochemical toxic gas or oxygen sensors, and 2 high current draw sensors such
as an infrared PID or catalytic sensor, plus 1 remote particulate sensor such as the
YESDUST. Choose from a selection of up to 30 different sensors to best suit your
application specifications. Reference the list of available sensors under 4.2 Plug &
Play Sensor Gas Types.
Most of the sensor modules can be changed in the field and are operable within
minutes (accurate readings will require more time as each sensor type has a
