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3.6.5.2.
Your Methods - Chemicals Monitored by Your ACM 150
The ACM 150 monitors the air samples for the presence of gases and vapors of liquid
chemicals. It will monitor only those chemicals for which it has been configured. Although
several methods may be used, the ACM 150 monitor is always provided with at least one
analytical method. The user requested these chemicals, which were then grouped by a
Honeywell application chemist into methods or groups of chemicals.
The method is identified with a customer code at the beginning, followed by the method
number. The method number is changed each time it is revised to add or delete gases.
The user can assign any of these methods to a particular sample area. Once a method
(group of chemicals) is selected for a sample area, the user must decide which substances
may be present in the sample area. Those chemicals are designated as active.
The ACM 150 monitor will then monitor each sample area for all the chemicals set active
for that sample area. It does not report chemicals designated inactive.
3.6.6. ZPD Values (ZPD Energy and ZPD Position)
The ZPD, Zero Path Difference, is a signal produced by the FTIR analyzer. The ZPD
energy and ZPD position are performance indicators that are always monitored by the
ACM's computer.
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