Envision ENV100, User Manual

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3 Safety
Landfill gas is normally safely extracted from landfills and conveyed to appropriate control
devices. However, during the course of monitoring each extraction point, exposure may occur. As such,
it is important to follow all site-specific safety protocols when monitoring. Working at a landfill typically
requires site specific health and safety plans. While performing monitoring at a landfill, the user should
be aware of the items included in the site specific health and safety plan. It is important to know that
all personal protection equipment and safety protocols as appropriate must be used when using this
instrument. All vents on the meter are designed to exhaust to the atmosphere. Since landfill gas
contains methane, no smoking is permitted while using the instrument. Calibration gases must be
handled with utmost care and with adequate ventilation.
It is the sole responsibility of the user of the Envision® sensor unit and handheld PC to determine the
appropriate location that either unit can be utilized within as monitoring conditions may change. The
Envision® sensor unit handheld PC are not intended for use in confined space entries but for the
continuous monitoring of gasses within a landfill gas collection system.
4 Certification
Envision® model ENV200 has been UL certified for use in
hazardous locations (Class 1, Zone 1, AEx d ib IIA T4) when
connected in accordance with control drawing 1104M200.
Although models ENV100 and ENVAUS are based on a similar
design, these models have not been certified for use in explosive
atmospheres. It is important that this manual be followed closely
and that any repair to the Envision® gas analyzer is made at the
approved Elkins Earthworks® repair facility. Opening the Envision® gas analyzer and breaking the
housing warranty seals may result in voiding the unit’s warranty as well as compromising the unit’s
safety. The charger should not be connected when an explosive atmosphere is present.
The Envision® sensor unit also meets FCC regulations for a Class A Digital Device Part 15, Subpart B,
Sections 15.107b & 15.109b