Ammonia, a colorless gas with a strong, pungent odor, poses a serious threat to human health due to its potential toxicity and can cause irreversible damage to the environment and production equipment. Prolonged exposure to high concentrations of ammonia can even lead to poisoning and death. In agriculture and animal husbandry, ammonia accumulation can affect the growth and development of plants and animals, reducing production efficiency and product quality. Furthermore, ammonia emissions exacerbate air pollution, causing long-term adverse effects on the ecological environment.

    Accurate and timely monitoring of ammonia concentration is crucial for protecting human health, maintaining ecological balance, and promoting sustainable development. Tensensor, a professional manufacturer of gas sensors, leveraging its extensive experience in electrochemical gas sensing technology, has launched the MQ-E3-NH3 electrochemical ammonia sensor, providing an efficient and reliable solution for ammonia monitoring.

Product Introduction

MQ-E3-NH3 Electrochemical NH3 Sensor

    The MQ-E3-NH₃ is an electrochemical ammonia sensor based on the principle of constant potential electrolysis. When ammonia gas enters the sensor, a series of redox reactions occur, generating a current signal proportional to the gas concentration, thus achieving high-precision and high-sensitivity quantitative detection. This sensor features low power consumption, a wide linear range, and strong anti-interference capabilities, balancing sensitivity and stability, making it suitable for long-term continuous monitoring scenarios.

Core Advantages

    1. High-Performance Specifications, Meeting Stringent Requirements

    Wide Measuring Range: 0–100ppm, maximum measurable 200ppm, covering common industrial and environmental monitoring ranges.

    High Sensitivity: 80–160nA/ppm, rapid response (T₉₀ ≤ 60 seconds), resolution up to 0.5ppm.

    Strong Environmental Adaptability: Operating temperature -20℃～50℃, humidity 15%–90%RH, suitable for various field environments.

    Long Lifespan Design: Up to 2 years of service life in a 2ppm NH₃ environment, low maintenance costs.

    2. Excellent Anti-Interference Capability

    The sensor has undergone rigorous testing and exhibits extremely low response to common interfering gases such as carbon monoxide, hydrogen sulfide, formaldehyde, and ethanol (see the cross-interference table in the datasheet for details), ensuring accurate ammonia identification even in complex gas environments and avoiding false alarms.

    3. Stable, Reliable, and Highly Repeatable: It possesses excellent output linearity, with monthly stability <10% and repeatability <10% of the output value. Even under varying temperature and humidity conditions, zero-point drift is kept within acceptable limits, ensuring the consistency of long-term monitoring data.

    4. Easy to Integrate and Flexible in Application: It provides a standard test circuit reference, supports a wide voltage supply of 3.3–5.5V, and requires only a 10Ω load resistor. It can be easily embedded into various testing instruments, portable devices, or fixed monitoring systems.

Application Scenarios

    1. Ammonia Alarms in Livestock and Agriculture: The MQ-E3-NH3 electrochemical ammonia sensor can be used in ammonia alarms in livestock and agricultural settings to monitor ammonia concentrations in livestock sheds, greenhouses, and other environments in real time, ensuring the healthy growth of animals and plants.

    2. Portable Ammonia Detectors: The electrochemical ammonia sensor is suitable for portable ammonia detectors and devices, allowing users to monitor ammonia concentrations in the environment anytime, anywhere, ensuring personnel safety and environmental protection.

    The MQ-E3-NH3 electrochemical ammonia sensor has demonstrated its application value in multiple fields due to its excellent performance. Whether it's environmental monitoring in livestock and poultry houses, gas management in agricultural greenhouses, or industrial safety monitoring, the ammonia sensor provides accurate and reliable ammonia concentration data, helping users effectively prevent and control the risks posed by ammonia, ensuring production safety, and promoting environmental health.

    If you need more high-quality sensor products and services, please feel free to contact us：

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