Advertisement
Chapter 22:Technical Specifications
Note 2 : For probes not measuring N2O and/or O2 the concentrations shall be set from host according to the instructions.
(IRMA CO2 measures neither N2O, nor O2. IRMA AX+ dose not measure O2.)
Note 3 : Interference at indicated gas level. for example, 50 vol% Helium typically decreases the CO2 readings by 6%. This
means that if measuring on a mixture contaning 5.0 vol% CO2 and 50 vol% Helium, the measured CO2 concentration will
typically be (1-0.06) * 5.0 vol% = 4.7 vol% CO2.
Note 4 : According to the EN ISO 80601-2-55:2011 standard.
Note 5 : In addition to the EN ISO 80601-2-55:2011 standard.
Multi-gas, Sidestream (MASIMO SWEDEN AB)
ISA CO2
ISA AX+
ISA OR+
Gas /CO2 Interface
Description
Ambient CO2
Recovery time after defibrillator test
Water handling
Sampling flow rate
Degree of protection against harmful
ingress of water or particulate matter
Method of sterilization
Mode of operation
Degree of protection against electric shock
Data output
Breath detection
7
Respiration rate
8
Fi and ET
Fi and ET are displayed after one breath and have a continually updated breath average.
The following methods are used to calculate end-tidal (ET) values:
-CO2: The highest concentration of CO2 during one breathing cycle with a weight function applied to favor
values closer to the end of the cycle.
-O2: The highest/lowest concentration of O2during the expiratory phase (depending on whether ETO2 is higher or
lower than FiO2
-N2O and anesthetic agents: The momentary gas concentration at the time point where ETCO2 is detected.
ET will typically decrease below nominal value (ETnom ) when respiration rate (RR) exceeds the RR threshold (RRth)
according to the following formulas:
ISA CO2
CO2
ISA OR+/AX+
CO2
N2O, O2, DES, ENF, ISO, SEV
HAL
Automatic agent identification
Gas analyzer
Sensor head
Calibration
Compensation
6
Volumetric flow rate of air corrected to standardized conditions of temperature and pressure.
7
Measured at I/E ratio 1:1 using breath simulator according to EN ISO 80601-2-55 fig. 201.101.
8
Measured at I/E ratio 1:1 using breath simulator according to EN ISO 80601-2-55 fig. 201.101.
CO2, CO2 waveform
CO2, N2O, primary and secondary Agents (HAL, ISO, ENF, SEV, DES)
CO2,O2, N2O, primary and secondary Agents (HAL, ISO, ENF, SEV, DES)
Connector and S/W Interface Driver, Applicable for All Gas and CO2 Modules.
Compact, low-flow sidestream gas analyzers with integrated pump,
zeroing valve and flow controller.
≤ 800 ppm (0.08 vol%)
Unaffected
Nomoline Family sampling lines with proprietary water removal tubing.
6
50 ± 10 sml/min
IPX4
The ISA system contains no sterile parts.
CONTINUOUS OPERATION
Nomoline Family sampling lines are classified as DEFIBRILLATION-
PROOF TYPE BF APPLIED PART
Adaptive threshold, minimum 1 vol% change in CO2concentration.
0 to150 ± 1 breaths/min (or BrPM)
ET=ETnom×(125⁄RR)_for RRth >125
ET=ETnom×
ET=ETnom×
ET=ETnom×
ISA OR+/AX+: primary and secondary agent.
2 to 9 channel NDIR type gas analyzer measuring at 4 to 10 µm.
Data acquisition rate 10 kHz (sample rate 20 Hz / channel).
O2 measurements by Servomex's paramagnetic sensor.
No span calibration is required for the IR bench. An automatic zeroing is
performed 1 to 3 times per day.
ISA CO2
Automatic compensation for pressure and temperature.
22-8
User Manual
for RRth >70
for RRth >50
for RRth >35
Advertisement
Chapters
