Drawell DW-TY-9900, Operation Manual

Page: 5 / 34

4
Chapter 2 Working Environment and Facility Requirements
2.1 Working Environment
2.1.1 Room
The effective space of the room is about 12-15 square meters, which is suitable for keeping the
temperature. There are reagent cabinets with standard liquid, reagent racks, computer tables and
chairs, etc., and 1-2 air conditioners are installed.
2.1.2 Suitable Operating Environment
Ambient temperature
:25
℃
±3
℃
(Temperature change rate within 2
℃
/h).
Relative humidity :70% or less(dehumidifiers should be installed in areas with high environmental
humidity).
Exhaust requirements:
Doors and windows are tightly sealed to prevent sand and moisture from
entering.
Other requirements :The room is clean, dry, free of dust, no corrosive gas, and no vibration on
the ground.
Well grounded: resistance ≤ 4Ω.
Plasma spectroscopy is a large-scale precision optical instrument that needs to operate in a
certain environment. Losing these conditions will not only make the instrument use poorly, but
also the instrument’s detection performance will not be fully utilized, even causing damage and
shortening its life. According to the characteristics of optical instruments, there are certain
requirements for ambient temperature and humidity. If the temperature change is too large, the
optical element will be affected by the temperature change will produce spectral line drift,
resulting in unstable measurement data, generally, the room temperature is required to be
maintained at a fixed temperature between 25±3
℃
, and the temperature change should be less
than ±1
℃
/h. If the ambient humidity is too high, optical components, especially gratings, optical
mirrors or lenses are easily damaged by moisture or have reduced performance. Electronic
systems, especially the components on printed circuit boards and high-voltage power supplies,
are easily damaged by moisture. The influence of humidity on the high-frequency generator is
also very important. Excessive humidity will cause the plasma to be difficult to ignite, or cause
high-voltage power supply and high-voltage circuit discharge to destroy components. Generally,
the indoor humidity should be less than 70%, and it is best to control it between 45-60%. If
necessary, an air purification device should be provided.
2.1.3 Good Dust Prevention Measures
Exhaust fans need to be installed in laboratories with spectrometers, when the exhaust fan is
working, there is a pressure difference between the laboratory and the outside, a negative
pressure is generated inside the laboratory, and the outdoor air containing a lot of dust flows into
the room through the gaps between doors and windows. A large amount of it accumulates on
various parts of the instrument, and it is easy to cause high-voltage components or connectors to
ignite, circuit boards, wiring, sockets, etc., short circuits, leakage, and various faults. Therefore,
frequent dust removal is required.
Especially computers, electronic control circuits, high-frequency generators, etc., are regularly