Reliable Data Center Environmental Monitoring: Stable PUE Optimisation with E+E Sensors
Data centres are the backbone of the digital world. At the same time, they are major energy consumers. Operators face a constant balancing act between maximum operational reliability and availability and rising requirements for cost, audit readiness and energy efficiency (PUE – Power Usage Effectiveness). This is where E+E Elektronik comes in: with a sensor and service concept for data center environmental monitoring that enables energy optimisation – without compromising on safety and stability.
Measurement accuracy that saves real money – up to 9% lower cooling energy demand per +1 °C higher server supply air temperature.
Long-term stability – a reliable data basis over many years instead of gradual drift.
Compact, practical designs – easier placement at critical measurement points and higher measurement-point density.
Easy integration – compatible with typical BMS/BAS architectures and standardised interfaces.
€200200kpotential annual energy savings with a 0.4 °C higher server supply air temperature
99%lower cooling energy demand per +1 °C higher server supply air temperature
+55%energy savings achieved by increasing server inlet temperature by just 0.5 °C
Why Choose E+E for Data Center Environmental Monitoring
In a data centre, measurement accuracy is not a technical detail – it is a direct lever for efficiency. Anyone who wants to intentionally raise the server inlet temperature or control air volumes cleanly can only do so if temperature, air velocity, humidity and pressure are captured reliably and reproducibly. This results in more stable control, reduces unnecessary safety margins, lowers cooling energy demand and creates the foundation to implement efficiency measures safely without endangering uptime. E+E Elektronik, for example, provides highly accurate temperature sensors with an accuracy of ±0.1 °C.
Based on the rule of thumb that the cooling energy demand drops by around 9% per +1 °C higher server supply air temperature, increasing the temperature by just 0.4 °C and assuming an electricity price of €0.15/kWh saves around €200,000 per year (with 8,760 operating hours, 10 MW IT load and a PUE of 1.40). The compact design also enables a higher measurement-point density and thus better overall control quality across the system.
High-precision temperature measurement with ±0.1 °C accuracy enables reliable data center environmental monitoring and energy-efficient cooling control.
Data centre operators cannot afford downtime – neither for maintenance nor for calibration cycles. E+E Elektronik sensors score here with maintenance-friendly concepts that help standardise processes and keep availability high. A flexible design for a wide range of installation options simplifies integration into existing systems.
For example, the HTS401 humidity and temperature sensor features innovative rapidX technology: an intelligent, factory pre-calibrated measuring module that can be exchanged directly in the field in just 10 minutes. In addition, E+E Elektronik sensor solutions have a modular design, allowing probes and components to be replaced quickly and easily. Wall-mount and duct-mount options complete the portfolio
Compact digital probe designed for stable, long-term data center environmental monitoring of temperature and humidity at critical points.
Efficiency, compliance and quality make traceable data indispensable – for audits, internal standards, SLA arguments or cross-site comparability. E+E Elektronik combines sensor technology with a strong calibration and documentation approach: measurement results are made verifiable. E+E sensors are calibrated in-house in a laboratory accredited to EN ISO/IEC 17025. Each device is delivered with complete, traceable documentation, providing the security and transparency required in standardised environments.
Sensor solutions for data center environmental monitoring aligned with ISO/IEC 22237 and DIN EN 50600 requirements for reliable infrastructure operation.
In the data centre, long-term performance is what counts. Drift, ageing, contamination or critical humidity conditions can gradually change readings and make control strategies silently inefficient or risky. E+E Elektronik’s in-house sensing element development clearly focuses on long-term product stability. Decades of know-how in selecting the right materials prevents typical drift and ensures reliable measurements over the entire service life.
In addition, innovative protection concepts against humidity or harsh ambient conditions such as sensor coating, encapsulated sensor connections, the Automatic ReCovery function (ARC) or a Condensation Guard (CG) enable stable measurements without loss of quality. This reduces maintenance effort, lowers false alarms and ensures that highly accurate measurements remain a given long after commissioning
High-quality sensing elements are the foundation of long-term stable data center environmental monitoring. Innovative sensor design, protective coatings and advanced technologies ensure drift-free, reliable measurements over the entire service life.
Data centres are developing towards higher density, more dynamic cooling strategies and greater automation. E+E supports this change with a broad, consistent portfolio and clear standards in interfaces (analogue and digital) and system integration. The result is a reliable data basis for efficient operation today and for further optimisation tomorrow.
For more than 40 years, E+E Elektronik has provided solid application know-how – from typical measurement points in the white space to HVAC and containment applications, through to integration into BMS/BAS structures. This creates solutions that are not used in isolation, but integrated into the overall system. For operators and OEMs, that means less coordination effort, faster commissioning and a measurably more stable monitoring concept.
Expert consultation and application know-how are key elements of reliable data center environmental monitoring. E+E Elektronik supports operators and OEMs with long-term stable sensor solutions and deep application expertise for future-proof monitoring concepts.
High-precision temperature measurement with ±0.1 °C accuracy enables reliable data center environmental monitoring and energy-efficient cooling control.Compact digital probe designed for stable, long-term data center environmental monitoring of temperature and humidity at critical points.Sensor solutions for data center environmental monitoring aligned with ISO/IEC 22237 and DIN EN 50600 requirements for reliable infrastructure operation.High-quality sensing elements are the foundation of long-term stable data center environmental monitoring. Innovative sensor design, protective coatings and advanced technologies ensure drift-free, reliable measurements over the entire service life.Expert consultation and application know-how are key elements of reliable data center environmental monitoring. E+E Elektronik supports operators and OEMs with long-term stable sensor solutions and deep application expertise for future-proof monitoring concepts.
Products for Data Center Environmental Monitoring
HTS401
Modular Humidity and Temperature Sensor for Demanding Climate Control
-40 to +80 °C (-40 to +176 °F)
0–100 % RH
±0.95 % RH / ±0.1 °C (0.18 °F)
analog outputs (0–5 V / 0–10 V / 4–20 mA)
RS485 (Modbus RTU)
E+E proprietary coating
IP65 / NEMA 4(X)
for high humidity and chemical exposure
EE260
Heated Humidity and Temperature Probe for Meteorological Applications
0–100 % RH
-60...+60 °C (-76...+140 °F)
±1.3 % RH accuracy
RS485 interface with Modbus RTU
Robust industrial housing (IP65 / NEMA 4X)
for outdoor and meteorology applications
EE08
High-Precision Miniature Humidity and Temperature Probe
0–100 % RH
-40...+80 °C (-40...176 °F)
Thin-film technology
Supply voltage down to 4.5 V DC
Compact design for easy installation
For meteorology and other outdoor use
IP65 protection rating
EE451
Wall Mounted Temperature Sensor
0–100 % RH
−40…+70 °C (−40…+158 °F)
For building automation and HVAC
RS485 interface with Modbus RTU
Protection rating IP65 / NEMA 4X
Available with and without display
EE072
Humidity and Temperature Probe with Digital Interface
0 ... 100 %RH
-40 ... 80 °C (-40 ... 176 °F)
E+E proprietary coating
Polycarbonate or stainless steel
Modbus RTU / CANopen
±1.3 % / ±2.3 % RH accuracy
EE074
Temperature Probe with Modbus RTU
Electronics: –40…80 °C (–40…176 °F)
70 mm & 155 mm probe: –40…80 °C (–40…176 °F)
305 mm probe: –70…105 °C (–94…221 °F)
Accuracy at 20 °C (68 °F): ±0.1 °C (±0.18 °F)
Modbus RTU (RS485)
IP68 protection (electrical connection IP67)
EE046
Condensation Monitor
10...100 %RH, non condensing
Treshold 90 ±3 %RH
Protection rating IP40
Prevents condensation on critical cold spots
for HVAC, cooling ceilings & chilled pipes
Suitable for control cabinets & building services
EE741
Inline Flow Sensor for Compressed Air and Gases
O₂, N₂, Ar or CO₂ in DN15 to DN50 pipes
7 bar (102 psi)
Modbus RTU / M-Bus / IO-Link
E+E hot film sensing element
Robust design in stainless steel
EE771
Flow Sensor for Compressed Air and Gases
−20…+80 °C (−4…+176 °F)
Accuracy ±0.7 °C (±1.26 °F)
For air, nitrogen, CO₂, O₂, argon
E+E hot-film sensing element
Modbus RTU or M-BUS interface
Consumption meter for cost-effective analysis
EE776
Insertion Flow Sensor for Compressed Air and Gases
Pressure rating 16 bar (232 psi)
−20…+80 °C (−4…+176 °F)
Accuracy ±0.7 °C (±1.26 °F)
Air velocity 0.5…200 m/s
For pipes DN50 (2”) to DN700 (28”)
Modbus RTU or M-BUS interface
For monitoring & metering compressed air, N₂, CO₂
CDS201
Room Sensor for CO₂, Temperature and Relative Humidity
Why accurate environmental monitoring matters in data centres
That is exactly where sensor technology shifts from a “monitoring add-on” to a real lever. HVAC and climate control account for more than 30% of a data centre’s total energy consumption, making them one of the biggest consumers on site. Even the smallest changes to the server inlet temperature can have a noticeable impact on energy demand. An increase in inlet temperature of just 0.5 °C can save around 4–5% of energy consumption. To use this potential effectively, one thing is essential: stable, highly accurate measurements captured exactly where they are relevant for control and verification.
In practice, it is not only what you measure, but also where: in the white space (close to racks / the cold aisle), in the supply air, in pressure zones / containment, at filters or outdoors for free-cooling strategies. Easy installation, a space-saving design and seamless integration into existing systems are critical prerequisites. At the same time, requirements for documentation and compliance with standards are increasing (e.g. ASHRAE, DIN EN 50600 / ISO 22237).
Mr. Li Fusheng, Technical Director at IAC & HBC
In the lithium battery production process, E+E humidity and dew point sensors provide accurate and real-time environmental monitoring for HBC low dew point rotary dehumidifiers. With outstanding measurement accuracy, excellent long-term stability and consistent performance, E+E sensors stably track subtle dew point and humidity changes in ultra-low humidity working conditions.
This enables HBC rotary dehumidifiers to maintain a stable ultra-low dew point environment for lithium battery production, effectively avoiding product quality issues caused by moisture interference and ensuring stable production line operation. It makes E+E sensors an ideal match for HBC dehumidification equipment, which has been fully recognized by end customers.
Questions about Data Center Environmental Monitoring?
Tell us about your application – we’ll recommend a suitable sensor or calibration solution tailored to your needs.
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