Dräger Medical Zeus, Техническая документация инструкция

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Zeus Function description
wavelengths from the broadband infrared radiation in the near (NIR) and mid
(MIR) ranges. Those wavelengths are use to measure CO2/N2O (NIR
approx. 3 μm) and anesthetic gas (MIR approx. 9 μm).
7.2.4 Function There are a total of 8 filters on the filter wheel:
– 3 filters for the anesthetic gases
– 2 reference filters for NIR and MIR
– 1 zeroing filter
– 1 filter each for CO2 and N2O
In the beam path downstream of the filter wheel is the cuvette (3). There the
sample gas weakens the infrared radiation to a greater or lesser extent
depending on its composition. These signal changes are received by the
detector (4) and passed on to the evaluation electronics (5).
From those signals, the associated electronic circuit generates the values for
CO2, N2O and anesthetic gases (Halothane, Isoflurane, Desflurane and
Sevoflurane).
Figure 22 Schematic of the IRIA measurement principle; Legend Table 1
Table 1 Legend to Figure 22
7.3 ILCA 2
ILCA 2 is used in the GMZ 2. It is a gas measuring module for N2O, CO2 and
the anesthetic gases Halothane, Enflurane, Isoflurane, Desflurane and
Sevoflurane. ILCA 2 conforms to the measurement accuracy specified by
ISO standard.
The gas measuring module can automatically recognize the anesthetic in
use. Its function is more or less the same as that of the gas measuring mod-
ule
ILCA . However, an ILCA 2 sensor head is used instead of the IRIA sensor
head.
Item Name
1 Emitter with filament
2 Filter wheel with 8 filters
3 Cuvette
4 Detector
5 Output signal to evaluation electronics