Page 6 of 19
I. Introduction
Carbon monoxide (CO
2
) is one of the most common gases existing in daily life and
industry. Carbon Dioxide, colorless and odorless, is a natural component of air at
approximately 0.03 %. The HAL-HCO201 handheld carbon dioxide meter is a
compact personal monitor that can provide a rapid indication of CO
2
levels at the touch
of a button. The HAL-CO201, based on the most reliable and accurate dual-beam,
non-dispersive infrared (NDIR) sensing technology, features directly displays the
carbon dioxide concentration in ppm or percentage.
Low-power consumption design enables long operation time. Exceptional stability
and patented self-calibration algorithm allow very long intervals between calibration
intervals. The external digital temperature and humidity sensor or pressure sensor,
when applicable, allows compensation or correction for accurate measurement. The
USB port provides capability of downloading stored data and possible continuous,
real-time monitoring of the environment. The HalTech HCO201 Carbon Dioxide
meter makes it easy to take quick measurements of a wide range of CO
2
levels. With
a built-in pump, the HCO201 is a point-to sample instrument and responds very quickly
to ambient changes in CO
2
concentration.
The HAL-HCO201 Carbon Dioxide monitor can be widely used for continuous
