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What is the working principle of the incubator temperature and humidity verification instrument? What are the characteristics?
Date: 2025-08-13Read: 4
The working principle of the incubator temperature and humidity verification instrument is mainly based on high-precision sensing and closed-loop control system, and its core characteristics are reflected in accuracy, safety, and intelligence. The following is a specific analysis:
1、 Working principle
1. Real time monitoring: Equipped with high-precision platinum resistance temperature sensors and polymer capacitive humidity sensors, continuously collecting temperature and humidity data inside the box.
2. Dynamic regulation:
(1) Temperature control: The microprocessor compares the set value with the measured value and adjusts the heating tube (temperature rise) or the cascade compressor refrigeration system (temperature drop) through PID algorithm.
(2) Humidity control:
Humidification: Using steam injection, ultrasonic atomization, or shallow groove water evaporation technology to increase humidity.
Dehumidification: Start the refrigeration coil to condense the moisture in the air, and then discharge the condensed water to reduce humidity.
3. Uniformity guarantee: The circulating fan forces air convection, combined with air duct design to ensure uniform distribution of insulation and humidity, with controllable fluctuation range (such as temperature uniformity ≤ 0.3 ℃).
4. Calibration mechanism: Regularly correct sensor drift through a temperature and humidity automatic calibration system (compliant with JF1101-2019 standards) to ensure long-term accuracy.
2、 Core Features
1. High precision and stability
The temperature control accuracy reaches ± 0.1 ℃, and the humidity control accuracy is ± 0.1% RH, meeting strict standards such as GMP.
The uniform heating design avoids relying on high wind speeds and meets the requirements of dry wet bulb calibration (wind speed<0.2 meters/second).
2. Intelligence and Security Protection
The third generation device supports handheld operation and can run independently without a computer. It also has functions such as water and power outage protection, automatic cut-off of heating due to overheating, etc.
Real time fault alarms (such as sensor abnormalities, overcurrent tripping) ensure experimental safety.
3. Efficient verification capability
Multi channel design can verify multiple points simultaneously (such as 10 temperature and humidity meters), supporting batch calibration.
Equipped with a data interface (USB/485 communication), it automatically generates calibration reports and is suitable for fields such as drug circulation and material research.
4. Portability and adaptability
Small size, suitable for rapid on-site deployment; Modular structure compatible with validation of different volume incubators.
Application scenario extension
In addition to incubator validation, similar technologies are also used for temperature and humidity monitoring of drug storage, calibration of environmental testing equipment (such as high and low temperature test chambers), and industrial quality inspection scenarios.