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END-TIDAL O2 AND CO2 MONITOR
(Model: GEMINI - Complete with accessory pack, 110/220V)
Dual O2 and CO2 monitor

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Presentation

The GEMINI Respiration Monitor measures CO2, O2, and respiration rate of spontaneously breathing or ventilated animals. It provides breath-by-breath readings for end-tidal CO2 and O2, and instantaneous respiratory rate (breaths/minute). Adjustable alarms are provided to monitor CO2 and respiratory rate.

This instrument uses the latest sensor technology for accuracy, stability, and fast response. CO2 is measured with a temperature-controlled miniature infrared analyzer cell; O2 is measured with a new paramagnetic sensor cell. Respiratory rate is computed using the normal excursion of the CO2 signal, and is updated on each breath.

Operating principle

The sample inlet tubing is connected to the endotracheal tube as close to the animal as possible. High and low alarms are set using a single knob, and the settings are stored in non-volatile memory so they do not have to be reset the next time the instrument is used. All measurements are displayed on the front panel LCD display, and are available as analog voltages for external recording. In addition, a serial port provides all the measurements in a simple ASCII format for collection by any computer.

Expandable:
An open slot is provided for installation of any SYSTEM 1000 instrumentation module. Available modules include a cardiotachometer (Model CT-1000), blood pressure amplifier (Model PM-1000), plethysmographic respiration monitor for very small animals (Model RR-1000), and many other functions. This expandability allows you to configure a complete physiological monitor for use during surgery or extended experiments.

Standard features

• Paramagnetic O2 analyser
• Infrared CO2 analyzer
• Analog and RS232 outputs
• Expandable with additional function modules

Parameters measured

• Oxygen
• Carbon Dioxide
• Respiratory rate

Domains of application

The GEMINI monitor provides complete information for respiratory status assessment for animals as small as rats. It comes complete with an accessory pack of inlet tubing, connectors, and moisture filters.

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Oxygen analyzer type Paramagnetic
Linearity (0 - 100%) +0.1% O2
Repeatability < 0.01% O2 /hour
Zero stability +0.1% O2 /day
+0.2% O2 /month
Response time <200 mS
Operating temperature 0 - 65°C
Maximum pressure 15 psi
Maximum sample flow 250 ml/min
Instrument measurement range 0 - 100% O2
Carbon Dioxide analyzer type single-beam infrared
Operating range 0 - 10% CO2
Linearity (full scale) 1% FS
Zero drift 0.1% (8 hours), 0.2% (24 hours)
Sensor cell temperature controlled at 48oC
Warm-up time <5 min
Maximum sample flow 250 ml/min
Instrument measurement range 0 - 10.0% CO2
Respiratory Rate measurement range 10 - 600 breaths/min
Respiratory Rate alarm range 9 - 599 breaths/min
CO2 alarm range 1.0 - 9.9%
Analog outputs O2, CO2, Respiratory Rate
Analog signal outputs (rear panel) BNC jacks
Respiratory Rate output 10mV/br/min
O2 output 100mV/% O2
CO2 output 100mV/% CO2
Serial data output format 9600 baud, 8 data bits, no parity, 1 stop bit
Serial data interval Complete set of readings sent 1 per breath, or 1 per minute
Serial output connector (rear panel) DB9 male
Dimensions, main unit 19W x 5.25H x 12D in.
Dimensions, expansion module 2.75 x 5.0 inches (SYSTEM 1000 standard)
Power requirements 120/240V (switchable), 100VA

Model:
GEMINI
End-tidal O2 and CO2 monitor
Complete with accessory pack, 110/220V Contact us

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