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SprintIR-W Data Sheet

Product catalog summary

Overview: The document provides comprehensive technical specifications and operational guidelines for the SprintIR®-W High Speed CO2 Sensor by Gas Sensing Solutions Ltd. It details the sensor's capabilities, including rapid response and high-speed measurement, suitable for real-time gas analysis in various applications such as healthcare and food packaging.

Specifications: The sensor utilizes NDIR technology with solid-state LED optics, capable of measuring CO2 concentrations up to 100% with a typical accuracy of 70ppm. It offers a high flow throughput and custom flow adaptor options, with a measurement range up to 100%.

Applications: The sensor is applicable in fields like healthcare, food packaging, sports science, and CO2 fire suppression deployment.

Ordering Information: Various configurations are available based on measurement range, temperature and humidity options, CO2 voltage output, and flow adaptor inclusion.

Absolute Maximum Ratings: The sensor's maximum ratings include a supply voltage range of -0.3V to +6.0V, operating temperature from 0°C to +50°C, and storage temperature from -40°C to +70°C. Proper handling precautions are necessary due to ESD sensitivity.

Recommended Operating Conditions: The sensor operates with a supply voltage (VDD) between 3.25V and 5.5V.

Mechanical Sealing: For sensors with a flow port adaptor, the working pressure is 0.3bar, and burst pressure is 2bar. Sensors with a membrane cover do not have an airtight seal.

Performance Characteristics: Under specified test conditions, the sensor operates with a supply voltage of 3.3V and measures CO2 at 450ppm with 0% RH.

CO2 Measurement Specifications: The sensor measures CO2 concentrations ranging from 0 to 100%, with accuracy varying with temperature and concentration range. The response time is influenced by the digital filter setting and flow rate.

Humidity and Temperature Performance: The sensor measures humidity from 0 to 100% with an accuracy of ±3% RH at 25°C. Temperature measurement ranges from -25 to 55°C with an accuracy of ±0.5°C.

Power Consumption: The sensor operates at a VDD of 3.3V, consuming 9 mA in active mode and 0.01 mA in sleep mode.

Operational Modes: The sensor has three modes: Command Mode (Mode 0), Streaming Mode (Mode 1), and Polling Mode (Mode 2). Mode 1 is the default, providing continuous measurements at 20 readings per second.

Zero Point and Auto-Zero Functions: The sensor offers several methods for zero-point calibration, including using known gas concentrations, nitrogen, or fresh air. An auto-zero function adjusts the zero point based on typical background CO2 levels.

Pressure and Concentration Compensation: The sensor's readings are affected by pressure and gas concentration, with calibration at 1013mbar and 450ppm CO2.

Digital Filter and Response Time: The sensor uses a digital filter to reduce noise, with settings adjustable based on application needs.

Altitude Compensation: The document provides an altitude compensation table for CO2 measurements, detailing how pressure changes with altitude affect CO2 readings.

Control Interface: The SprintIR®-W sensor uses a UART interface for communication, with a baud rate of 9600 bits/s.

UART Command Protocol: Various UART commands are outlined for sensor operation, including setting digital filter values, zero-point calibration, and reading sensor data.

Temperature and Humidity Measurements: The sensor can measure temperature and humidity, with specific commands provided to retrieve these values.

Zero Point Setting Commands: Several commands are available for zero-point calibration, with detailed syntax and examples provided.

Key Sections: The document outlines several commands for sensor configuration and data retrieval, including specific commands for zero-point setting, auto-zeroing, and pressure compensation.

Critical Information: Emphasis is placed on using the correct syntax for commands and understanding the scaling of input values by the CO2 value multiplier. Customers are advised to verify the latest product information and implement adequate design safeguards.

Catalog excerpts

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

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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 Solutions...

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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.

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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.

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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 Otherwise...

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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

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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.

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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.

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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.

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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 volume...

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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, waiting...

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