Data Center Temperature and Humidity Sensors: Key Devices for Ensuring Environmental Stability

In the digital era, data centers serve as the hub for data storage and processing. Their environmental stability directly affects equipment lifespan and business continuity. Excessive temperature can cause server overheating and crashes, while improper humidity may lead to static electricity or corrosion. Through precise monitoring and intelligent linkage, data center temperature and humidity sensors have become a core component of DCIM systems. With reliable performance, the Nexisense series supports end-to-end solutions from local display to cloud-based management, helping enterprises build efficient environmental control for data centers. This article provides a detailed explanation of their technical principles and practical value.

Definition of Data Center Temperature and Humidity Sensors

A data center temperature and humidity sensor is a monitoring device specifically designed for data centers. It simultaneously measures air temperature and relative humidity and converts them into standard output signals. It is commonly integrated into DCIM systems, covering power, environmental, and security parameters.

According to the national standard GB2887-89, Class A data centers require a temperature of 22±2°C and humidity of 45–65% RH. Sensors ensure these parameters remain stable, preventing abnormalities caused by equipment heat sources such as server cooling.

Working Principle of Data Center Temperature and Humidity Sensors

The working principle is based on high-precision measurement units. The temperature measurement typically uses platinum resistance or thermistor elements to detect changes in thermal equilibrium, while the humidity measurement relies on capacitive polymer films that absorb water molecules, causing capacitance variations. Internal circuitry compensates for environmental interference and outputs linear data.

Within DCIM systems, sensors collect data in real time and interact with modules such as water leakage detection and power monitoring. When abnormalities occur, multi-channel alarms are triggered to ensure rapid response.

Structural Design of Data Center Temperature and Humidity Sensors

The structural design emphasizes industrial durability. Typical models feature an 86-type wall-mounted enclosure with an LCD display and buttons for on-site configuration of addresses and thresholds. Probes can be built-in or external, with stainless steel protective filters for dust resistance.

Wiring uses tool-free terminals compatible with 0.3–2.0 mm² cables. Output interfaces support RS485 and analog signals (4–20 mA / 0–5 V / 0–10 V), enabling easy integration with PLCs or cloud platforms. Nexisense devices are modular and flexible to install.

Advantages of Data Center Temperature and Humidity Sensors

• Reliable accuracy: temperature ±0.1°C, humidity ±2% RH, strong anti-interference capability.

• Clear display: large LCD screen with real-time readings and local configuration via buttons.

• Multiple transmission options: RS485 networking with cloud-based remote support.

• Timely alarms: multi-channel alerts when thresholds are exceeded, preventing hidden risks.

• Excellent scalability: integration into DCIM systems covering temperature, humidity, leakage, and more.

These advantages enable 24/7 uninterrupted monitoring and significantly reduce the burden of manual inspections.

Application Scenarios of Data Center Temperature and Humidity Sensors

• Core data center areas: monitoring server heat dissipation to maintain constant temperature and humidity.

• Power distribution rooms and UPS areas: preventing thermal abnormalities in power systems.

• Multi-site data centers: unified management via cloud platforms with cross-regional visibility.

Combined with water leakage detection and access control, a comprehensive DCIM system is formed, supporting predictive maintenance.

Measurement Methods of Data Center Temperature and Humidity Sensors

Measurement is continuous and automatic. Wall-mounted installation near equipment is recommended, avoiding direct exposure to heat sources. The probe is exposed to ambient air for real-time sampling.

Data is uploaded to cloud platforms via local software or remote applications. Users can view trends, export reports, and preset thresholds. Abnormal conditions trigger instant alarms through SMS, email, or phone calls.

Maintenance and Care Guidelines

Maintenance is simple. Regularly clean the probe and check wiring connections. Annual calibration using standard instruments is recommended.

Avoid direct sunlight and strong electromagnetic interference. Cloud platforms can monitor device status and promptly identify offline issues.

Nexisense designs emphasize durability, minimizing maintenance frequency.

Technical Specifications

Temperature range: -40 to +80°C (extendable), accuracy ±0.1°C; humidity range: 0–100% RH, accuracy ±2% RH.

Output: RS485 (Modbus-RTU), 4–20 mA / 0–5 V / 0–10 V; display: LCD screen; protection rating: IP65+; power supply: DC 12–24 V.

These specifications comply with Class A data center standards and ensure reliable operation.

Overall Value of DCIM Systems

DCIM systems use temperature and humidity sensors as their core, extending to power, leakage detection, and security monitoring. Their advantages include round-the-clock monitoring, intelligent alerts, and centralized management.

Remote platforms overcome time and location limitations, enabling trend analysis and informed decision-making. This reduces failure rates and ensures data security.

Frequently Asked Questions (FAQ)

What are the standard temperature and humidity requirements for data centers?
Class A: temperature 22±2°C, humidity 45–65% RH.

What are the risks of excessive temperature?
Equipment overheating, data loss, or system crashes.

How can remote management be achieved?
Through cloud platforms, with real-time access via apps or web browsers.

What alarm methods are supported?
SMS, email, phone calls, and app notifications.

What should be considered for installation location?
Keep away from heat sources, install at approximately 1.5 meters above ground, and ensure good air circulation.

Data center temperature and humidity sensors and DCIM systems, such as the Nexisense series, are reshaping data center management. From real-time sensing to intelligent alerts, they safeguard environmental stability, mitigate risks, and enhance efficiency. In the future, with the continued development of IoT technologies, these solutions will further promote intelligent data center transformation, ensuring business continuity and data security.