SprintIR-W Data Sheet
36Pages

SprintIR®-W High Speed CO2 Sensor DESCRIPTION The SprintIR®-W is a high flow through NDIR CO2 sensor using state-of-the-art solid-state LED optical technology. The low power LEDs are manufactured in-house, giving GSS complete control of the CO2 sensor signal chain. The SprintIR®-W is designed for applications that need high response time and high-speed measurement capability. The SprintIR®-W is takes 20 readings per second, making it ideal for equipment that needs real-time CO2 gas analysis or monitoring. The sensor is available in multiple versions, capable of measuring CO2 levels up to 100% concentration. FEATURES • 20 readings per second • High flow throughput capability • Custom flow adaptor options • 70ppm typical measurement accuracy • Measurement range up to 100% • Solid state NDIR LED optical technology • UART control and data interface • Built-in auto-zeroing APPLICATIONS • Healthcare • Food Packaging • Sport Science • CO2 Fire Suppression Deployment Production Data, Revision 4.8, 23 June 2021 Page | 1 For regular updates, go to https://www.gassening.co.uk Copyright © 2021 Gas Sensing Solutions Lt

For regular updates, go to https://www.gassening.co.uk Production Data, Revision 4.8, 23 June 2021 Copyright © 2021 Gas Sensing S

Gas Sensing Solutions Ltd. Page | 3 For regular updates, go to https://www.gassening.co.uk Production Data, Revision 4.8, 23 June 2021 Copyright © 2021 Gas Sensing Solutio

SprintIR®-W High Speed CO2 Sensor ORDERING INFORMATION SPRINTIR-W-X-XX-X X 5 20 60 100 X H Blank X Measurement Range 0-5% 0-20% 0-60% 0-100% Temperature and RH Included Not included CO2 Voltage Output Flow Adaptor Included Not included, membrane only Notes: 1. Sensors are shipped individually 2. Custom flow through adaptors are available, contact GSS for options See separate data sheet for SprintIR®-W evaluation kit options. Gas Sensing Solutions Ltd. Page | 4 For regular updates, go to https://www.gassening.co.uk Production Data, Revision 4.8, 23 June 2021 Copyright © 2021 Gas Sensing...

SprintIR®-W High Speed CO2 Sensor PACKAGE DRAWING: SprintIR®-W WITH FLOW PORT ADAPTOR Weight = ~7g Gas Sensing Solutions Ltd. Page | 5 For regular updates, go to https://www.gassening.co.uk Production Data, Revision 4.8, 23 June 2021 Copyright © 2021 Gas Sensing Solutions Ltd.

SprintIR®-W High Speed CO2 Sensor PACKAGE DRAWING: SprintIR®-W WITH MEMBRANE COVER PIN-OUT DESCRIPTION: SprintIR®-W (Either Version) Production Data, Revision 4.8, 23 June 2021 Page | 6 For regular updates, go to https://www.gassening.co.uk Copyright © 2021 Gas Sensing Solutions Ltd.

SprintIR®-W High Speed CO2 Sensor ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings are stress ratings only. Permanent damage to the SprintIR®-W may be caused by continuously operating at or beyond these limits. The SprintIR®-W functional operating limits and guaranteed performance specifications are given at the test conditions specified. ESD Sensitive Device. This sensor uses ESD sensitive components. It is therefore generically susceptible to damage from excessive static voltages. Proper ESD precautions must be taken during handling and storage of this device. Test Conditions Unless...

SprintIR®-W Gas Sensing Solutions High Speed CO2 Sensor CO2 2 PERFORMANCE CHARACTERISTICS Test Conditions Unless Otherwise Specified VDD = 3.3V, GND = 0V. CO2 = 450ppm, RH = 0% non-condensing, T= 25°C, Pressure = 1013mbar, Flow Rate = 0.2l/minute, Flow Port Production Data, Revision 4.8, 23 June 2021 Copyright © 2021 Gas Sensing Solutions Ltd. Page | 8 For regular updates, go to https://www.gassening.co.uk

SprintIR®-W High Speed CO2 Sensor HUMIDTY PERFORMANCE CHARACTERISTICS - SprintIR®-W Option Notes 1. The output CO2 accuracy is degraded where ANALOGUE_OUTPUT <50mV, or >VDD-50mV 2. ANALOGUE_OUTPUT accuracy specified with a resistive loading @ >100Kohm Production Data, Revision 4.8, 23 June 2021 Page | 9 For regular updates, go to https://www.gassening.co.uk Copyright © 2021 Gas Sensing Solutions Ltd.

SprintIR®-W High Speed CO2 Sensor ELECTRICAL CHARACTERISTICS Production Data, Revision 4.8, 23 June 2021 Page | 10 For regular updates, go to https://www.gassening.co.uk Copyright © 2021 Gas Sensing Solutions Ltd.

SprintIR®-W High Speed CO2 Sensor PARAMETER Notes 1. The timing for FRESH_AIR_ZERO is identical to NITROGEN_ZERO 2. Ensure gas concentration is stable (t1) before beginning zeroing process Production Data, Revision 4.8, 23 June 2021 Page | 11 For regular updates, go to https://www.gassening.co.uk Copyright © 2021 Gas Sensing Solutions Ltd.

SprintIR®-W High Speed CO2 Sensor RESPONSE TIME, FLOW RATE AND MEASUREMENT RATE - SprintIR®-W The SprintIR®-W response time is dependent on several interrelated factors. Measurement Rate The measurement rate is fixed at 20 readings per second. Gas Exchange Rate The most important factor is the gas exchange rate. This is the amount of time it takes for the gas to enter the CO2 measurement chamber, measured, and then replaced. The sensor has a gas measurement chamber volume of approximately 2.8ml. As a general rule of thumb, to properly exchange the gas in the chamber, there needs to be a x5...

SprintIR®-W High Speed CO2 Sensor METHOD OF OPERATION After power is applied to the SprintIR®-W, the sensor will automatically start to take CO2 measurements using the Mode 1 default settings, where the sensor is pre-programmed to send CO2 measurement data at 20 readings per second. The measurement rate is fixed at 20 readings per second at a fixed 9600 baud rate. The sensor will return the previous CO2 measurement results if the user requests more frequent measurements. The SprintIR®-W has 3 potential modes of operation. MODE 0 COMMAND MODE In this mode, the sensor is in a SLEEP mode,...

SprintIR®-W High Speed CO2 Sensor DIGITAL FILTER The CO2 gas chamber is illuminated with a nominal 4.25um wavelength LED and the signal received using a photodiode. The signal from the photodiode is processed and filtered by the sensor to remove noise and provide an accurate CO2 reading. High frequency noise coming from the sampling process is removed using a proprietary lowpass filter. The digital filter setting can be varied, allowing the user to reduce measurement noise at the expense of the measurement response time. The ideal digital filter setting is application specific and is...