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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EE31

EE31

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.

EE31

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Connection versions

standard

2x M16x1.5

plug option C03

Lumberg

RKC 5/7

power supply+
analogue output

plug option C06

Lumberg

RSC 5/7

RS232

Dimensions in mm

Housing:

polycarbonate housing metal housing

135 (5.3”)

66.5

(2.6”)

M16x1.5

plug option C08

Y splitter*

Lumberg

RSC 5/7

RS485 network

* Siemens 6ES7 194-1KA01-0XA0

135 (5.3”)

Lumberg
RKC 5/7

power supply+
analogue output

66.5 (2.6”)

90 (3.5”)

Models:

50 (2”)

*)

L

∅12 (0.5”)

EE31-xAx

Wall mounting

Probe material: PC

code “probe length”

90 (3.5”)

163 (6.4”)

For use in harsh industrial environments all models of the EE31 are
available in a robust metal housing.
The very smooth surface and the rounded outlines allow for the use in
clean rooms as well.

*)

L

EE31-xDx

∅12 (0.5”)

Remote probe for T

code “probe length”

up to 180°C

(356°F)

code “cable length”

15 (0.6”)

Probe material: stainless steel

*)

L

*)

L

code “cable length”

200

15 (0.6”)

14

EE31-xBx

Duct mounting

Probe material: stainless steel

*) L = Filter length: refer to data sheet "Accessories"

∅12

(0.5”)

∅13 (0.51”)
min. 23

∅12

adjustable

(1”) / max. 164 (6.5”)

(0.47”)

1/2” ISO or
1/2” NPT

EE31-xEx

Pressure tight probe up to 20bar

Probe material: stainless steel

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(300psi)

EE31

Technical Data

Measurement values

Relative humidity

Humidity sensor
Working range
Accuracy

*)

-15...40°C (5...104°F) ≤90% RH ± (1.3 + 0.3%*mv) % RH

-15...40°C

-25...70°C

-40...180°C
Temperature dependence of electronics typ. ± 0.01% RH/°C (0.0055% RH/°F)
Response time with metal grid filter at 20°C / t

Temperature

Temperature sensor element Pt1000 (Tolerance class A, DIN EN 60751)
Working range sensing head EE31-xAx: -40...60°C
EE31-xBx: -40...80°C (-40...176°F) EE31-xEx: -40...180°C (-40...356°F)
Accuracy

1)

1)

0...100% RH

HC1000-400

(including hysteresis, non-linearity and repeatability, traceable to intern. standards, administrated by NIST, PTB, BEV...)

(5...104°F) >90% RH ± 2.3% RH
(-13...158°F) ± (1.4 + 1%*mv) % RH

(-40...356°F) ± (1.5 + 1.5%*mv) % RH

< 15s

90

(-40...140°F) EE31-xDx: -40...180°C (-40...356°F)

∆°C

°C

Temperature dependence of electronics typ. ± 0.005°C/°C

Outputs

2)

Two freely selectable and scaleable analogue outputs 0 - 5V -1mA < IL < 1mA

0...100% RH / xx...yy°C respectively 0 - 10V -1mA < I
4 - 20mA R
0 - 20mA R

L

L

< 1mA

L

< 500 Ohm

< 500 Ohm
Serial interface RS232C
RS485 optional

Max. adjustable measurement range

2)3)

from up to units
EE31-A EE31-B EE31-D,E
Humidity RH 0 100 100 100 % RH
Temperature T -40

(-40) 60 (140) 80 (176) 180 (356) °C (°F)

Dew-point temperature Td -40 (-40) 60 (140) 80 (176) 100 (212) °C (°F)
Frost-point temperature Tf -40 (-40) 0 (32) 0 (32) 0 (32) °C (°F)
Wet-bulb temperature Tw 0 (32) 60 (140) 80 (176) 100 (212) °C (°F)
Water vapour partial pressure e 0 (0) 200 (3) 500 (7.5) 1100 (15) mbar (psi)
Mixture ratio r 0 (0) 425 (2900) 999 (9999) 999 (9999) g/kg (gr/lb)
Absolute humidity dv 0 (0) 150 (60) 300 (120) 700 (300) g/m

3

3

(gr/f

Specific enthalpy h 0 (0) 400 (50000) 1000 (375000) 2800 (999999) kJ/kg (Btu/lb)

General

Supply voltage 8...35V DC

12...30V AC (optional 100...240V AC, 50/60Hz)
Current consumption - 2x voltage output for 24V DC/AC: typ. 40mA

- 2x current output typ. 80mA
Pressure range for pressure tight probe 0.01...20bar
System requirements for software WINDOWS 2000 or later; serial interface
Housing / protection class PC or Al Si 9 Cu 3 / IP65; NEMA 4
Cable gland M16 x 1.5 cable Ø 4.5 - 10 mm
Electrical connection screw terminals up to max. 1.5mm² (AWG 16)
Working and storage temperature range of electronics -40...60°C (-40...140°F)

-20...50°C (-4...122°F) - housing with display

Electromagnetic compatibility according to EN61326-1 EN61326-2-3 ICES-003 ClassB
Industrial Environment FCC Part15 ClassB

1) Refer to the working range of the humidity sensor. 2) Can be easily changed by software.

3) Refer to accuracies of calculated values (www.epluse.com/feuchtemessung).
*) The accuracy statement includes the uncertainty of the factory calibration with an enhancement factor k=2 (2-times standard deviation).

The accuracy was calculated in accordance with EA-4/02 and with regard to GUM (Guide to the Expression of Uncertainty in Measurement).

(0.15...300psi)

(0.18 - 0.39”)

)

)

EE31

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Technical Data for Options

Display graphical LC display (128x32 pixels), with integrated push-buttons
for selecting parameters and MIN/MAX function
Alarm outputs 2 x 1 switch contact
250V AC / 6A
28V DC / 6A
Threshold + hysteresis can be adjusted with configuration software
Switching parameters freely selectable between:
RH Relative humidity
T Temperature
Td Dew-point temperature
Tf Frost-point temperature
Tw Wet-bulb temperature
e Water vapour partial pressure
r Mixture ratio
dv Absolute humidity
h Specific enthalpy

Working range humidity sensor

The grey area shows the allowed measurement range for
the humidity sensor.

Relative humidity [%RH]

Temperature [°C]

Connection diagram

Scope of Supply

EE31 according to ordering guide
Manual EE31 German/English/French

Inspection certifi cate according to DIN EN 10204 – 3.1

Allen key 3.0 only for metal housing
Mating plug for integrated power supply V01
Mating plug RKC 5/7 V01 / C03 / C08
Y-junction for network connection C08 & N
Mating plug RSC 5/7 C06 / C08
M16 Cable gland metal except C03, C06, C08, V01

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Operating points outside of this range do not lead to
destruction of the element, but the specified measure­ment accuracy cannot be guaranteed.

Terminal configuration - Alarm output

NC

REL1

REL2

Included in all versions According to ordering guide

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C

NO

NC

C

NO

1

2

3

4

5

6

EE31

Ordering Guide

EE31- EE31- EE31- EE31-

Hardware Configuration

Housing metal housing M M M M

Type humidity + temperature FT FT FT FT
Model A B D E
Filter stainless steel sintered filter 3 3 3 3

Cable length 2m

(incl. probe length)

Probe length 65mm

Pressure tight 1/2” male thread HA03
feedthrough 1/2” NPT thread HA07
Interface RS232

Display without display

Alarm output

Plug cable glands

Sensing probe fixed

Coating sensor no

Supply voltage 8...35V DC / 12...30V AC

1)

Software Configuration

Physical relative humidity RH [%] (A) Output 1
parameters of Temperature T [°C] (B)
outputs Dew point temperature Td [°C] (C) Output 2

Type of 0-5V (2)
output signals 0-10V (3)

Measured value units metric / SI

Scaling of T-output -40...60 (T02) -20...80 (T24) 0...350 (T89)
Scaling of Td-output 0...50 (T04) 0...180 (T26) 32...120 (T90)
in°C or °F 0...100 (T05) -40...180 (T52) 32...140 (T91)

1) Combination alarm output and plugs is not possible (with cable glands only) / combination alarm output and integrated power supply is not possible

2) Integrated power supply includes 2 plugs for power supply and outputs / further plug options are not possible

polycarbonate housing P P P P

PTFE filter 5 5 5 5

filter 8 8 8 8

H

2O2

stainless steel grid filter (up to 180°C/ 356°F) 9 9 9 9

(6.6ft) 02 02

5m (16.4ft) 05 05

(32.8ft) 10 10

10m

(65.6ft) 20 20

20m

(2.6”) 2

(7.9”) 5 5 5

200mm

(15.8“) 6 6

400mm

RS485 N N N N

with display D05 D05 D05 D05
without relay
with relay SW SW SW SW

1 plug for power supply and outputs C03 C03 C03 C03
1 cable gland / 1 plug for RS232 C06 C06 C06 C06
2 plugs for power supply/outputs and RS485 Network C08 C08 C08 C08

pluggable P01 P01

yes HC01 HC01 HC01 HC01

3

] (H)

2)

Output T

Output Td

integrated power supply 100...240V Ac, 50/60Hz

Frost point temperature Tf [°C] (D)
wet bulb temperature Tw [°C] (E)
water vapour partial pressure e [mbar] (F)
mixture ratio r [g/kg] (G)
absolute humidity dv [g/m
specific enthalphy h [kJ/kg] (J)

0-20mA (5)
4-20mA (6)

non metric / US E01 E01 E01 E01

0...60 (T07) -40...100 (T79) 32...180 (T92)

-40...120 (T12) -40...350 (T82) 32...250 (T94)

0...120 (T16) -40...140 (T83) 32...300 (T95)

0...80 (T21) -40...300 (T84) 32...132 (T96)

-40...80 (T22) 0...250 (T88) 32...350 (T101)

V01 V01 V01

Select according to Ordering Guide(A-H, J)

Select according to Ordering Guide(A-H, J)

Select according to Ordering Guide(2,3,5,6)

Select according to Ordering Guide (Txx)

Select according to Ordering Guide (Tdxx)

Other T and Td-scaling refer to datasheet

T-Scaling

Order Example

EE31-PFTB55SW/BC2-T07-Td03

Housing: polycarbonate housing
Type: humidity + temperature Output 1: T
Model: duct mounting Output 2: Td
Filter: PTFE Filter Output signal: 0-5V
Probe length: 200mm (7.9”) Scaling of T-output: 0...60°C
Alarm output: with relay Scaling of Td-output: -10...50°C

Accessories / Replacement Parts (For further information, see data sheet "Accessories")

- Filter caps (HA0101xx) - Interface cable for plugs C06 (HA010311)

- Display + housing cover in metal (D05M) - Bracket for installation onto mounting rails* (HA010203)

- Display + housing cover in polycarbonate (D05P) - Drip water protection (HA010503)

- Sensing probe (Pxx) - Calibration set (HA0104xx)

- Humidity sensor (FE09 or FE09-HC01) - Mounting flange stainless steel (HA010201)

- Interface cable for PCB (HA010304) * Note: Only for plastic housing, not for metal housing

EE31

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