E+E Elektronik India Private Limited

EE8915 measures reliably CO₂ concentration in harsh environment and complies with the relevant railway standards. Active pressure and temperature compensation with on-board sensors leads to best CO₂ measurement accuracy independent of temperature, altitude or weather conditions.

The EE850 combines CO2 and temperature (T) measurement in an innovative enclosure. It is ideal for demand controlled ventilation and building automation. With a CO2 measuring range of up to 10 000 ppm and a T working range of -20...+60 °C (-4...+140 °F), the EE850 can be employed also in demanding climate and process control applications. The EE850 incorporates the E+E dual wavelength NDIR CO2 sensor, which compensates for ageing effects, is highly insensitive to pollution and offers outstanding long term stability.

A Single Module - 3 Measurands
The EE895 module measures not only the CO₂ concentration up to 10,000 ppm (1% CO₂) but also the temperature (T) and ambient pressure (p). The pressure and temperature compensation with on-board sensors minimizes the impact of the environment onto the CO₂ measurement. As a result, the EE895 offers a particularly high CO₂ measurement accuracy, independent of altitude or changing ambient conditions.

Long-Term Stable CO₂ Measuring Principle
The dual wavelength NDIR CO₂ measuring principle with auto-calibration ensures excellent long-term stability, as it automatically compensates for aging effects and is particularly resistant to contamination. The multi-point CO₂ and temperature factory adjustment procedure leads to excellent CO₂ measurement accuracy over the entire T working range from -40...60 °C (-40...140 °F).

Easy Design-In
The I²C and UART interfaces, the very small dimensions of only 35 mm x 15 mm x 7 mm (1.38" x 0.6" x 0.27") and various mounting options facilitate the design-in of the sensor module.

Flexibly Configurable 
The EE895 module can be configured via the digital interface. The CO₂ measurement interval can be set according to the application and the power requirements.

EE895 Evaluation Board for Test Purposes
The evaluation board, which is available as an accessory, allows easy testing of the EE895 with a view to the intended application. It is connected to the PC via a USB cable. Using the sensor evaluation software, which is available free of charge, the measurement data can be visualised and logged. Users have the option to set the EE895's measurement interval, and the desired measurement units for temperature and pressure.

Design Data and Support Literature
The electronic design data of the EE895 is available free of charge from the download area of the E+E website. This means that the 3D data from the sensing module can be quickly and easily transferred to a CAD design tool. Using the I²C interface, the EE895 module can be connected to various single board computers such as the Arduino or Raspberry Pi. Step-by-step instructions (available from the download area) help you program and integrate the EE895 into your application.

Typical Applications

• Demand controlled ventilation
• Building automation
• Process control
• Data loggers, hand-held instruments
• Wireless transmitters

Outstanding Measurement Performance
The CO2 measurement of the CDS201 relies on the pollution-resistant E+E dual wavelength NDIR technology. This measuring principle automatically compensates for ageing effects and ensures excellent long-term stability. The multiple point CO2 and temperature adjustment procedure leads to excellent CO2 measurement accuracy over the entire temperature working range.

The E+E proprietary sensor coating protects the RH/T sensing element from contamination and corrosive deposits. This improves the measuring performance and service life of the sensing element in dusty or dirty environments.

Outputs and Digital Interface
The CDS201 room sensor features analogue outputs or RS485 interface with Modbus RTU. In the digital version, the CDS201 also calculates the dew point temperature (Td). The measured values can also be read locally on the optional graphic display.

The version with RS485 interface can be set up and configured via PC with the free PCS10 Product Configuration Software and an optional configuration adapter.

Installation-friendly Enclosure
The enclosure of the CDS201 facilitates fast and thus cost-saving installation. The back cover with the push-in spring terminals can be mounted and wired without the front cover. This means that the electronics, which are accommodated in the front cover, are not exposed to construction site pollution. Before commissioning, the active part can be simply snapped onto the back cover. Besides, the electronics part can be replaced without tools within seconds.

Typical Applications

• Demand controlled ventilation
• Heating, ventilation and air conditioning
• Building automation

The Sigma 05 sensor hub represents the central element of the E+E modular sensor ecosystem with intelligent probes, analogue outputs and display. With pluggable, interchangeable probes, the modular sensor platform is suitable even for harsh and challenging environment. The Sigma 05 is available with polycarbonate or die-cast aluminium enclosure.

Flexibility: Multiple Probes and Measurands
The Sigma 05 accommodates up to 3 E+E sensing probes with RS485 interface and Modbus RTU protocol. Up to 5 measurands can be assigned to the two freely selectable and scaleable analogue outputs and to the optional graphic display.

Plug-and-Play 
Sigma 05 features automatic detection of E+E probes and performs an autonomous, rule based hub setup. Refer to the user manual for details.

Configuration and Adjustment 
The free PCS10 Product Configuration Software allows for easy setup of the Sigma 05, measurand assignment and thresholds, display layout, scaling of the analogue outputs and adjustment of the connected probes.

Available Sensing Probes for Sigma 05 
EE072 - Humidity and Temperature Probe 
EE074 - Temperature Probe
EE671 - HVAC Air Velocity Probe 
EE680 - Air Velocity and Temperature Sensor for Laminar Flow
EE872 - Modular Probe for CO₂, Humidity, Temperature and Ambient Pressure
HTP501 - Digital Humidity and Temperature Probe
MOP301 - Insertion Moisture in Oil Probe with Modbus RTU

Reference Probe

A functional and accuracy check of the Sigma 05 can be performed with the E+E Reference Probe Modbus RTU instead of the regular sensing probes. The reference probe supplies fixed values for a wide choice of measurands and features an individual certificate. Refer to the Reference Probe Modbus RTU Quick Guide for further details.

• The EE872 reliably measures CO2 concentration up to 5 % (50 000 ppm) in agriculture, life stock barns, hatchers, incubators, green houses or outdoors. The active pressure and temperature compensation with on-board sensors leads to best CO2 measurement accuracy independently of the altitude or environmental conditions.
• EE872 incorporates the E+E dual wavelength NDIR CO2 sensor, which automatically compensates for ageing effects, is highly insensitive to pollution and ensures an outstanding long term stability. The multi-point CO2 and temperature adjustment leads to an outstanding measurement accuracy. The RH sensing element with E+E proprietary coating is suitable even for aggressive and corrosive environment.
• Beside CO2, the EE872 measures also relative humidity (RH), temperature and ambient pressure (p). Additionally, the devices calculated also the dew point temperature (Td).
• The heated versions of the EE872 are suitable even for high humidity and condensing environment. The IP65 enclosure and the PTFE filter cap offer excellent protection in polluted environment. With a catalytic filter cap, the EE872 is also appropriate for applications with periodical H2O2 sterilization.
• The CO2 measured data is available simultaneously on the analogue voltage and current outputs. Depending on the EE872 version, the RS485 interface with Modbus RTU or BACnet MS/TP protocol offers also the RH, T, p, or Td data.
• The free PCS10 Product Configuration Software together with an optional adapter cable facilitates the configuration and adjustment of the EE872.

• 4 in 1: CO2, RH, T and p measurement
• Dual wavelength NDIR CO2 measuring principle
• T and p compensation with on-board sensors
• IP65 protection class
• Excellent long-term stability
• Analogue output or Modbus RTU or BACnet MS/TP
• Heated versions for high humidity, condensing conditions
• CO2 measuring range up to 50,000 ppm
• Replaceable sensing module
• Low power consumption
• High insensitivity to pollution
• User configurable and adjustable

• Highly accurate, long term s
• table humidity and temperature room sensor for residential and commercial HVAC.
• The very stylish EE10 enclosure is available in European and US size and in several colours. The snap-on concept allows for easy installation. The active part of the device can be replaced within seconds without any tools.
• The measured data is available on two 4 - 20mA or 0 - 10V outputs, on the Modbus RTU or the BACnet interface, as well as on the optional display.

• High accuracy and long term stability
• Easy installation and service
• Elegant design
• Analogue, Modbus RTU or BACnet output

• EE8915 measures reliably CO2 concentration in harsh environment and complies with the relevant railway standards. Active pressure and temperature compensation with on-board sensors leads to best CO2 measurement accuracy independent of temperature, altitude or weather conditions.
• The EE8915 incorporates the E+E dual wavelength NDIR CO2 sensor, which compensates for ageing effects, is highly insensitive to pollution and offers outstanding long-term stability. A multi-point CO2 and temperature adjustment procedure leads to excellent measurement accuracy over the entire temperature working range.
• The innovative design enables the combination of short response time and high protection class. The CO2 measured data is available simultaneously as voltage and current output signal. The free EE-PCS Product Configuration Software facilitates the configuration and adjustment of the EE8915.
• Due to the compliance with the tough railway standards, the EE8915 stands for excellent performance in any challenging process and climate control application.

• EN50155:2017- Electronic equipment used on rolling stock
• EN50121-1:2017 - Electromagnetic compatibility - general
• EN50121-3-2:2016 - Electromagnetic compatibility - rolling stock
• EN61373:2010 - Rolling stock equipment - shock and vibration tests
• EN50125-1 - Environmental conditions for equipment - rolling stock and on-board equipment
• EN45545-2 - Fire protection on railway vehicles
• EN50306 - Railway rolling stock cables having special fire performance

• E+E dual wavelength NDIR working principle
• IP65 protection class
• Excellent long-term stability
• Voltage and current outputs
• T and p compensation with on-board sensors
• Short response time
• High insensitivity to pollution
• User configurable and adjustable

The dual wavelength NDIR technology with auto-calibration is particularly long-term stable and insensitive to contamination. A multiple point CO₂ and T factory adjustment leads to excellent CO₂ measurement accuracy over the entire T working range. The pressure compensation minimizes the impact of altitude and ambient pressure variations onto the CO₂ readings.

The measured data, with a range of up to 1% CO₂, is available on the I²C or the E2 digital interface. Small dimensions and electrical connection via contact pins, edge card socket or pads facilitate the design-in.

The CO₂ measurement interval can be set according to the application requirements; by this the average current consumption can be reduced to 420 μA, ideal for battery-operated devices.

Typical Applications

• Demand controlled ventilation
• Building automation
• Data loggers and hand helds
• Wireless transmitters

The E+E CO₂ sensors feature the dual wavelength/dual detector NDIR principle. One detector is tuned to 4.2 µm wavelengths, which is absorbed by CO₂, the second detector on 3.9 µm, which is not affected by any gas. For every single measurement the CO₂ concentration is calculated from the outputs of the two detectors.

This procedure is highly insensitive to pollution and appropriate for both HVAC and industrial process control.

A multiple point CO₂ and temperature adjustment procedure leads to excellent CO₂ measurement accuracy over the entire temperature working range.

Several E+E CO₂ measuring devices feature also temperature, humidity and barometric pressure measurement.

• HVAC sensors
• Sensors for agriculture and industrial process control
• OEM probes
• Data loggers
• Hand-held instruments

• Demand controlled ventilation
• Indoor air quality
• Stables
• Incubators
• Greenhouses
• Industrial process control

The EE820 CO2 sensor is optimized for use in harsh, demanding applications, such as hatchers, incubators, life stock barns or greenhouses.

• Dual-wavelength NDIR CO₂ sensor with long-term stability
• Robust IP54 housing with high resistance to contamination
• Accurate CO₂ measurement across the full temperature range
• Easy setup and adjustment via PCS10 configuration software