ATO medical oxygen sensor is a full-range oxygen sensor using voltage divider electrochemistry technology. It has a measurement range of 0-100%, a response time of less than 15 seconds, and is equipped with temperature compensation (0-40℃) to ensure accurate and stable detection. Medical O2 sensor does not require an external power supply, is lead-free and environmentally friendly, and can be directly integrated into medical devices such as oxygen generators and anesthesia equipment. Meanwhile, O2 oxygen sensor's lead-free and environmentally friendly characteristics meet the demand for green products in the medical field, providing a reliable and efficient solution for oxygen concentration monitoring in medical scenarios.
Specification
| Model |
ATO-AOX3100 |
| Detectable Gas Type |
Oxygen |
| Working Principle |
Voltage Divider Electrochemistry |
| Output Voltage |
9-14mV (in air) |
| Measurement Range |
0-100% |
| Response Time (T90) |
<15s |
| Linearity |
Full-scale Linear |
| Temperature Compensation |
<2% O2 equivalent (0-40℃) |
| Load Resistance |
≥10kΩ |
| Interface |
Molex 3-pin header (2.54mm) (MOLEX 22-29-2031) |
| Recommended Matching Interface |
Molex wire harness (MOLEX 22-01-2035) Molex crimp terminal (MOLEX 08-45-0110) |
| Housing Material |
White HDPE |
| Weight |
30g |
| Operating Temperature Range |
0-50℃ |
| Recommended Storage Temperature |
5-15℃ |
| Operating Pressure Range |
0.5-2.0bar |
| Operating Humidity Range |
0-99% RH (no condensation) |
| Long-term Drift in 100% O2 Environment |
<5% (voltage decay/year) |
| Expected Service Life |
24 months |
| Warranty Period |
12 months |
Features
Measurement Performance: 0-100% full-scale linear measurement with response time <15s, output voltage 9-14mV (in air), and temperature compensation <2% O2 equivalent (0-40℃), ensuring high accuracy and stability.
Convenience & Integration: No external power supply required, comes with Molex 3-pin interface (2.54mm) and recommended matching wire harness and crimp terminal for easy integration.
Environmental & Durability: Medical oxygen sensor is lead-free and RoHS compliant, with white HDPE housing. It has an expected service life of 24 months, a warranty period of 12 months, and can operate in a temperature range of 0-50℃, humidity range of 0-99% RH (no condensation), and pressure range of 0.5-2.0bar.
Application: O2 sensor is suitable for medical devices such as oxygen concentrator control devices, medical ventilators, anesthesia equipment, as well as incubators and other scenarios requiring oxygen concentration monitoring, also performs excellently in the automobile, fire-fighting, and coal mining industries.
Pin Definition

Dimension (Unit: mm)

Application

Tips: How Does Response Time Affect Performance of Oxygen Sensor in Medical Industry?
Among the core performance indicators of medical devices, "response time" is a key parameter for evaluating the suitability of oxygen sensors in clinical scenarios, directly related to the accuracy and timeliness of medical monitoring. The T₉₀ response time is even recognized as the industry's core evaluation standard. Simply put, the T90 response time refers to the time required for an oxygen sensor to stabilize its output signal to 90% of the final target value after coming into contact with the target oxygen concentration environment. The value directly reflects the sensor's "perceptual sensitivity" to changes in oxygen concentration — the smaller the value, the faster the sensor's reaction speed, enabling it to capture concentration fluctuations and feedback valid signals in a shorter time. In the medical field, especially for life-support equipment, the T90 response time is by no means a dispensable technical parameter, but a "threshold" that determines whether a sensor meets clinical requirements, and it directly safeguards patients' lives.
ATO medical oxygen sensor is equipped with a T90 response time of <15s, demonstrating irreplaceable value in medical industry applications. Its importance and advantages are reflected in multiple core scenarios. In life-support equipment such as ventilators and anesthesia machines, the fast response of <15s can accurately adapt to the dynamic breathing needs of critically ill patients: whether it is the breathing fluctuations of patients with acute respiratory distress syndrome or changes in airway oxygen concentration during surgical anesthesia, the sensor can instantly capture signals and feed them back to the equipment control system. This ensures real-time adjustment of oxygen supply parameters, avoiding the fatal risks of oxygen toxicity caused by excessively high concentrations and hypoxia due to excessively low concentrations. Compared with some ordinary sensors in the industry with a response time of 30-60s, the core advantage of the ATO-AOX3100 oxygen sensor lies not only in its "speed" but also in the "stability" brought by fast response — it enables medical equipment to achieve efficient closed-loop operation of "concentration monitoring - parameter adjustment", providing reliable monitoring data support for medical staff, reducing medical errors caused by signal delays, and ultimately building a solid line of defense for patients' lives.