Product Introduction
ET300 is an external plug and play sidestream co2 sensor. It does not occupy any host space and connects to host just with one eight-pin plug. ET300 features cutting-edge technology for measurement of instantaneous CO2 concentration, respiration rate, end-tidal CO2 concentration, inspired CO2 concentration, inspiration time and expiration time. It is generally used in patient monitor and anesthetic machine. With a sampling rate low to 50 mL/min, it is ideal for use on adult, pediatric and infant patients; patients undergoing procedural sedation; and short- term monitoring of intubated patients.
Product Features
State-of-the-art Non-dispersive infrared (NDIR) technology, dual wavelength, no moving parts
Breath-by-breath CO2 monitoring
Sample rate low to 50 mL/min
Barometer pressure and temperature compensation
Range calibration in 0 - 15% by manufacturer
Fast warmup time ensures full accuracy within 5 minutes
Oxygen, N2O and anesthetic compensation for accurate measurement
Low power consumption less than 2W
Fully compatible with Respronics Loflo sensor module
Technical Specifications
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Transducer Type
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ET300 Sidestream CO2 sensor
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Sample Rate
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50 mL/min, ±10mL/min.
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Principle of Operation
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Non-dispersive infrared (NDIR) single beam optics, dual wavelength, no moving parts
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Initialization Time
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Capnogram displayed in less than 5 seconds
Reaching full specifications within 10 minutes.
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CO2 Measure Range
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0 - 114 mmHg
0 - 15%
0 - 15.2kPa
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CO2 Resolution
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0.1 mm Hg 0 to 50 mm Hg
0.25 mm Hg 50 to 114 mm Hg
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CO2 Accuracy
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0 - 40 mmHg ±2 mmHg
40 - 114 mmHg ±5% of reading
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Respiratory Rate
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Range 2 to 120 Breaths Per Minute (BPM)
Accuracy ±1 breath
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Calibration
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No routine user calibration required
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Compensation
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Automatic Barometer Pressure 400 - 800 mmHg.
User selectable O2 / N2O compensation.
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Voltage Requirements
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5.0 VDC 5%
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Power Consumption
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Less than 1.5 Watts typical.
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Temperature and Humidity
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Operating: 0º to 40ºC, 10 to 90% RH, non-condensing
Storage: -40º to 70ºC, <90% RH, non-condensing
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Interconnection
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Pin out:
1. VA 5.0V
2. Shield Shield
3. DGND Digital return
4. VSRC Unused
5. TxD Serial data from LH800
6. RxD Serial data from Host
7. AGND Analog return
8. SYNC Unused
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Data Interface
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RS232, bi-directional, 19200 baud rate, standard N-8-1
Fully compatible with Respironics LoFlo communication protocol
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Data Output
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CO2 gas concentration (mm Hg), End-tidal CO2, Inspired CO2, Respiratory Rate, Automatic barometric pressure compensation.
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