E+E EE31 Specifications

EE31

Multifunctional Industrial Transmitter for

Humidity / Temperature / Dew Point / Absolute Humidity...

The precise and reliable measurement of humidity in industrial
processes is gaining more and more importance. The multifunctional
transmitters series EE31 offer the ideal solution.

The result of many years of experience in humidity measurement tech­nology for industrial applications, the EE31 series builds on the E+E high­quality HC series capacitive humidity sensor elements.

The optimal hardware structure for varying applications is achieved by
combining various standard mechanical and electronic modules. User
friendly MS Windows software tools simplify the configuration of the
transmitter, the data recording, visualization and processing.

The measured values are available on two freely configurable and
scalable analogue outputs and on the serial RS232 interface. With an
optional RS485 module up to 32 transmitters can be connected to a net­work and one single PC interface allowing easy remote monitoring.

Two freely configurable optional alarm outputs can be set by software.
The measured data and the corresponding MIN/MAX values can be
viewed on the optional LC display.

Other features especially tailored for harsh industrial applications are the
new housing concept consisting of three modules, the easy on-site
adjustment and calibration, and the pluggable sensor option.
These features allow for very fast and easy servicing of the transmitter.

Model A

Model B

Model D / E

By selecting a suitable housing version the EE31 series can be used for
the entire range of humidity measurement applications:

- Model A for wall mounting

- Model B for duct mounting

- Model D with remote sensing probe for measurements in the extended

temperature range -40...180°C (-40...356°F).

- Model E with remote sensing probe for pressure tight applications between 0.01...20 bar (0.15...300psi).

Network with up to 32 transmitters

Up to 32 transmitters can be connected in a RS-485 bus system to a single
PC interface.
The measured and calculated data is stored in a PC database which is avai­lable for further processing.
The data base can also be stored in ASCII format or in a database with
ODBC interface.

Product Configuration Software (EE-PCS)

The Configuration Software is used for:

- flexible, easy and fast setup of the analogue and alarm outputs.

- adjustment of the humidity and temperature outputs.

- exchange of the sensing probe or of the sensors.

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Easy calibration and adjustment of the transmitter

The modular housing of the EE31 enables a fast and easy on-site adjustment and calibration. Using the
optional extension cable one can adjust or calibrate the entire measurement loop without interrupting the
measurement. No need for time-consuming dismounting and wiring of the instrument.
This feature makes the EE31 series suitable for use in regulatory environments (e.g. FDA, GAMP).
The adjustment of humidity and temperature (2 points or 1 point) is performed either with a simple routine
using two push buttons on the printed circuit board or with the configuration software.

2 Status LEDs

Two status LEDs on the printed circuit board indicate the transmitter status and eventual errors,
especially useful during installation or service operations.

Sensor Coating

Operation in heavily polluted and/or corrosive environments is typical for many industrial processes and can
lead to drift or damage of the humidity sensor and thus to false measured values. The unique protective
coating developed by E+E for the sensing probe brings a significant improvement on the long-term stability
of the transmitter in very dirty and aggressive environments. (ordering code: HC01)

Integrated Display

The actual measured and calculated values as well as the corresponding Min/Max
values can be indicated on an optional display. The physical quantity to be dis­played is chosen with the push buttons on the housing. (ordering code: D05)

Pluggable sensing probe

The pluggable sensing probe with plug connection can be easily exchanged in the
versions D and E. The installation of the probe cable (up to 20m / 65ft) is
significantly simplified and can be installed prior to fitting the transmitter.
(ordering code: P01)

Alarm outputs

An optional alarm module with 2 relay outputs is available for control and alarm purposes. The selection of
the physical quantity for the relay outputs and the setting of threshold and hysteresis can be
easily made with the configuration software included in the standard scope of supply.

Integrated power supply

A power supply, integrated in the back module of the housing, can be ordered
optionally (100...240V AC, 50/60Hz; ordering code V01). The power supply V01 is
available for both polycarbonate and metal housing and comes standard with two
plugs for supply and outputs to allow an easy connection.

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