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.
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
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.
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 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
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.
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
- 0…2,000 / 5,000 ppm
- 0…100 % RH, non-condensing
- −30…+60 °C (−22…+140 °F)
- NDIR technology
- For HVAC applications
- Heating, ventilation and air conditioning
EE600
Differential Pressure Sensor
- 0…250 / 500 / 750 / 1 000 Pa
- 0…2 500 / 5 000 / 7 500 / 10 000 Pa
- ±250 / ±500 / ±750 / ±1 000 Pa
- ±2 500 / ±5 000 / ±7 500 / ±10 000 Pa
- –20…60 °C (–4…140 °F)
- Accuracy: ±0.5 % FS
- Auto-zero function
- Analogue output: 0–10 V or 4–20 mA
- Modbus RTU (RS485)
EE650
Air Velocity Sensor for HVAC Applications
- 0…10 / 15 / 20 m/s (0…2 000 / 3 000 / 4 000 ft/min)
- Accuracy ±(0.2 m/s) (±40 ft/min)
- RS485 with Modbus RTU
- IP65 / NEMA 4X protection
- For building automation & ventilation applications
- Thin-film technology
- for HVAC & process control
EE610
Low Differential Pressure Sensor
- 0...25 / 50 / 75 / 100 Pa
- –20…60 °C (–4…140 °F)
- Accuracy: ±0.5 Pa = ±0.5 % FS
- Auto-zero function
- Analogue output: 0–10 V or 4–20 mA
- Modbus RTU (RS485)
- IP65 / NEMA 4X housing
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).
Latest news at E+E
E+E Elektronik at MCE in Milan, Italy: March 24-27, 2026
Saving time and cost with humidity measurement
New E+E Product Catalogue
Questions about Data Center Environmental Monitoring?
Tell us about your application – we’ll recommend a suitable sensor or calibration solution tailored to your needs.
