E E ELEKTRONIK EE75 Air / Gas Velocity Sensor User Manual

E E ELEKTRONIK EE75 Air / Gas Velocity Sensor User Manual

E+E Elektronik Ges.m.b.H. doesn‘t accept warranty and liability claims neither upon this publication nor in case of improper treatment of the described products.

The document may contain technical inaccuracies and typographical errors. The content will be revised on a regular basis. These changes will be implemented in later versions. The described products can be improved and changed at any time without prior notice.

© Copyright E+E Elektronik Ges.m.b.H. All rights reserved.

EMC note USA (FCC):
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

Caution:
Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this device.

EMC note Canada (ICES-003):
CAN ICES-3 (B) / NMB-3 (B)

HARDWARE

1. General

This manual forms part of the scope of supply and serves to ensure proper handling and optimum functioning of the instrument. Consequently, it is essential to read the manual before commissioning. The manual is also to be brought to the attention of any person involved in transport, setup, operation, maintenance or repair.

This manual must not be used for competition purposes without the written consent of E+E Elektronik and must not be forwarded to third parties. Copies for personal use are permitted.

All information, technical data and illustrations contained in this manual are based on the information available at the time of publication.

1.1 Symbol Assertion

This symbol indicates a safety instruction.
Safety instructions must always be followed. Failure to do so can result in injuries or damage, for which E+E Elektronik accepts no liability.

This symbol indicates a note.
These notes should be observed to achieve optimum functioning of the equipment.

1.2 Safety Instructions

• • Excessive mechanical stress and improper use must be avoided.
• As the sensor element is sensitive to electrostatic discharge (ESD), appropriate protective measures should be taken when touching it.
• Installation, electrical connection, maintenance and commissioning must only be carried out by qualified personnel.

1.3 Installing the Enclosure

E+E Elektronik products are developed with due consideration to all major environmental issues.
Bearing this in mind, care should also be taken to avoid polluting the environment when disposing of equipment. When disposing of the sensor, the individual components must be sorted according to type. Electronic components must be kept together and disposed of in the proper manner for electronic scrap.

2. Product Description

The EE75 velocity sensors were developed to obtain accurate measuring results over a wide range of velocities and temperatures.

They have a robust metal enclosure to protect them against possible damage in rough industrial environments and come in three different typs, providing a comprehensive range of mounting options:

• Type T2 for duct mounting
• Type T3 with remote probe
• Type T26 with remote probe, pressure-tight to 10 bar (145psi)

3. Installation

Before starting the installation please make sure that the upper and lower modules of the enclosures are not mixed up! Only with identical serial numbers the function of the sensor can be guaranteed within the specifications (see chapter 9. “Technical Data”).

3.1 Installing the Enclosure

1. On delivery, the two mounting brackets (on the left and right of the enclosure base plate) are attached to the lower part of the enclosure with two screws each, facing inwards. For installation, the brackets can be swung out and screwed down (see drawing).

2. The dimensions of the mounting holes are as shown in the adjacent drawing.

3. The bottom part of the enclosure is fitted using 4 screws (not included).
   Max. screw diameter 4.5 mm (0.18″), for example 4.2 x 38 mm (0.17 x 1.5″)
   – DIN 7983H screws.

4. Connecting the sensor (see chapter 4 – Electrical Connections)

5. Lift the upper part of the enclosure into position and screw it into place using the four Allen screws included (Allen key provided).

3.2 Mounting Type T2 (Duct Mounting)
There are two types of duct mounting:

3.2.1 Mounting with Brackets
Refer to chapter 3.1
OR:

3.2.2 Mounting with a Flange
The stainless steel mounting flange allows for the sensor to
be mounted on the outside wall of the duct in which the
measurement takes place and adjusted to any insertion depth.

3.3 Mounting Type T3 (Remote Probe)

3.3.1 Installing the enclosure
Refer to chapter 3.1
3.3.2 Installing the probe
Refer to chapter 3.2.2 – Mounting with a Flange

3.4 Mounting Type T26 (Remote Probe, Pressuretight
up to 10 bar / 145 psi)

3.4.1 Installing the Enclosure
Refer to chapter 3.1
3.4.2 Installing the Probe

General safety instructions for installation using pressure tight movable screw connections
As the sensing probe can be exposed to very high pressures in the measuring environment, there is a risk of sudden, unintentional expulsion of the probe during or after improper installation. Special care should therefore be taken when working on or in the vicinity of the sensing probe. Do not, under any circumstances, bend directly over the probe.

When installing the sensor probe, be careful not to damage the surface of the sensing probe.

This could damage the seals (resulting in leakage and pressure loss) or cause problems when removing the probe (may get stuck).
Before installing the sensing probe, make sure it is free from any impurities such as grease or dirt.

Installing the probe
There should be a shut-off valve on both sides of the probe insert when installing the probe. This makes it easy to remove the sensor for maintenance and calibration.

1. Install the probe with the shut-off valves closed.
2. Insert the sensor probe into the process.
3. To ensure the probe is installed securely, the lock nut must be tightened to a specified torque of 10 Nm.
   If no torque spanner is available, tighten the lock nut by hand as far as possible and then turn it a further ~ 90° with an appropriate open-ended spanner.

An inadequate torque results in a low tension force (fixing force) on the clamping sleeve. This brings with it a risk of injury due to sudden expulsion of the sensing probe. An excessive torque can lead to permanent deformation of the clamping sleeve and sensing probe, making removal and re-installation more difficult or even impossible.

Removing the probe

1. If the sensor probe is installed in a pressure chamber, make sure that the pressure in the chamber and the ambient pressure are in equilibrium before removing the probe.
2. Hold the sensing probe/enclosure firmly. (Attention: Do not bend the connection cable)
3. Slowly loosen the lock nut using a spanner (spanner width 24).
4. The entire probe can now be removed.

General installation instructions:
Scaling the insertion depth on the probe
The insertion depth can be read off directly on the probe. The depth is measured from the centre of the velocity measuring slot (= middle of the sensor). The scaling on the probe has an offset of 30mm (1.2”). This allows for the insertion depth “X” (= distance between middle of sensor and mounting plate) to be read off directly above the screwed cable gland (see sketch).

Flow direction

4. Electrical Connections

4.1 Connection Diagram

4.2 Connection Diagram with Plug Connections (Optional)

4.3 Assignment USB – Interface Cable

5. Operating Components

5.1 Circuit Board

5.2 Jumpers for Setting the Output Signal
If the sensor output signal is set from current to voltage by use of the configuration software, additionally 2 jumpers must be set on the circuit board as follows:

5.3 Jumpers for Setting the Velocity Response Time
The EE75 allows users to set the velocity response time:

a) Setting the velocity response time using jumpers:
Jumper position (Also see chapter 5.1 – Circuit Board): Response time:

b) Setting the velocity response time using configuration software:
The response time (τ90) can also be set to any value between 1.5 and 40 s using the configuration software, without changing the jumpers on the circuit board. See Configuration Software, chapter 4.4 – Response Time

5.4 Display Module with Buttons (Optional)

4. MIN / MAX Function:
The MIN / MAX function can be used to record the lowest and highest values measured for each measurand since the last reset or the last interruption of the power supply.

By pressing the UP and DOWN buttons simultaneously in normal operating mode the stored MIN/MAX values for all measurands can be reset by selecting “CLEAR MIN/MAX BUFFER”; recording can then be restarted (for details see chapter 5.3 – Display Module with Buttons, point 7 – Menu navigation).

5. Measured Value:
The measured value of the respective measurand is indicated.

Pressing the UP and DOWN buttons moves the cursor “>” on the left-hand side of the display up and down to select one of the adjacent menu items.
Pressing the UP and DOWN buttons simultaneously for approx. 5 s confirms the selection and executes the selected menu item.

6. Velocity / Temperature Calibration

The EE75 can be calibrated / adjusted using either the buttons on the optional display module or the USB interface and configuration software provided.

Instructions for calibration:
To achieve comparable results to the E+E factory setting, please note following:
a) The adjustment should be done in a wind tunnel with homogeneous, low turbulent flow profile.
b) Insert the probe 10cm deep into the flow channel.
c) The fixtures should be mounted outside the flow channel and should not rise into the air stream (see drawing):

6.1 Selecting the Appropriate Calibration Method
(1-point or 2-point Calibration)
The EE75 sensor can be calibrated in 2 different ways:
– 1-point v/T calibration:
Quick and easy option for obtaining precise measuring results at a specific working point. 1-point calibration should only be used for very limited working ranges.

– 2-point v/T calibration:
With 2-point calibration, precise measuring results can be obtained over the entire v/T measuring range. The more complicated 2-point calibration procedure is preferable to 1-point calibration, if higher precision or a wider working range is required.

6.1.1 General Information on 1-point v/T Calibration:
If possible the selected calibration point should be similair to the working point (of the limited working range) of the sensor.
Example: Working range v 8 – 12 m/s (1600 – 2400 ft/min) > calibration point at 10 m/s (2000 ft/min); working range T 18 – 22 °C (64.4 – 71.6 °F) – > calibration point at 20 °C (68 °F).

• If the selected calibration point is < 50 % of the max. measuring range, V/T-CAL LOW should be selected for calibration / adjustment.
• If the selected calibration point is > 50 % of the max. measuring range, V/T-CAL HIGH should be selected for calibration / adjustment.

Example: v measuring range 0 – 10 m/s (0 – 2000ft/min); actual working range 6 – 8 m/s (1200 – 1600 ft/min);
selected calibration point 7 m/s (1400 ft/min); perform 1-point calibration, selecting V-CAL HIGH.

6.1.2 General Information on 2-point v/T Calibration:
With 2-point calibration, v/T calibration / adjustment is performed at 2 different calibration points.
To ensure the smallest possible deviation in measuring results over the entire measuring range, the two calibration points should be selected as follows:

• The low calibration point should be in the lower third of the measuring range.
  Calibration / adjustment must be performed using the V/T-CAL LOW function.

• The high calibration point should be in the upper third of the measuring range.
  Calibration / adjustment must be performed using the V/T-CAL HIGH function.

Example: EE75 T3***HV23 – measuring range = 0 … 2 m/s (0 – 400 ft/min).
Low calibration point (V-CAL LOW) should be around 0.4 m/s (0…0.7).
High calibration point (V-CAL HIGH) should be around 1.8 m/s (1.4…2).

6.2 Velocity Calibration
6.2.1 Calibration Procedure Using Configuration Software
See Configuration Software, chapter 4.9.3 – V Calibration Process Using a Configurator
6.2.2 Calibration Procedure Using Buttons on the Display Module (Optional)

1. Position the sensor head in the middle of the reference system (wind tunnel).

2. Stabilise the probe at the reference velocity (for at least 1 minute). The temperature of the measuring probe and the reference system must be approximately the same.

3. Press both buttons for approx. 5 s to display the menu window.

4. Use the buttons and cursor so select the menu item “CALIBRATION” and confirm the selection.

5. Select “V-Cal” and confirm the selection.

6. 1 “1-point calibration”:
   – Select the calibration point as described in chapter 6.1.1.
   – If calibration point > 50% of measuring range, select “V-CAL HIGH” and confirm the selection.
   – If calibration point < 50% of measuring range, select “V-CAL LOW” and confirm the selection.
   6.2 “2-point calibration”:
   – Select the low (high) calibration point as described in chapter 6.1.2.
   – Approach the low (high) calibration point in the reference system, select “V-CAL LOW” (“V-CAL HIGH”) on the sensor and confirm the selection.

7. The status line should display either CAL LOW (CAL HIGH).

8. The measuring value can now be adjusted with the reference value in 0.1m/s (20ft/min) increments by pressing the UP or DOWN button. The updated value is displayed immediately and present at the analogue output.

9. To save the adjusted measuring value in the instrument, press both buttons simultaneously for approx. 5 s, then select “YES” in the “SAVE” menu and confirm the selection. This exits the calibration routine and the sensor returns to normal operating mode.
   Selecting “NO” in the “SAVE” menu exits the calibration routine without saving the adjusted measuring value.

10. In the case of 1-point v calibration, the procedure is now complete.

11. For 2-point v calibration, repeat steps 6.2-9 with the (high) calibration point.

6.3 Temperature Calibration
6.3.1 Calibration Procedure Using Configuration Software
See Configuration Software, chapter 4.9.4 – T Calibration Procedure Using a Configurator
6.3.2 Calibration Procedure Using Buttons on the Display Module (Optional)

1. Insert the sensor head in the temperature reference system.

2. Allow it to stabilise (min. 15 minutes). The greater the difference in temperature between the measuring probe and the reference system, the longer the required stabilisation time.

3. Press both buttons for approx. 5 s to display the menu window.

4. Use the buttons and cursor to select the menu item “CALIBRATION” and confirm the selection.

5. Select “T-Cal” and confirm the selection.

6. 1 “1-point calibration”:
   Select the calibration point as described in chapter 6.1.1.
   – If calibration point > 50% of measuring range, select “T-CAL HIGH” and confirm the selection.
   – If calibration point < 50% of measuring range, select “T-CAL LOW” and confirm the selection.
   6.2 “2-point calibration”:
   Select the low (high) calibration point as described in chapter 6.1.2.
   – Approach the low (high) calibration point in the reference system, select “T-CAL LOW” (“T-CAL HIGH”) on the sensor and confirm the selection.

7. The status line should display either CAL LOW (CAL HIGH).

8. The measuring value can now be adjusted with the reference value in 0.1°C (32.18°F) increments by pressing the UP or DOWN button. The updated value is displayed immediately and present at the analogue output.

9. To save the adjusted measuring value in the instrument, press both buttons simultaneously for approx. 5 s, then select “YES” in the “SAVE” menu and confirm the selection. This exits the calibration routine and the sensor returns to normal operating mode.
   Selecting “NO” in the “SAVE” menu exits the calibration routine without saving the adjusted measuring value.

10. In the case of 1-point T calibration, the procedure is now complete.

11. For 2-point T calibration, repeat steps 6.2-9 with the (high) calibration point.

6.4 Resetting to Factory Calibration
If necessary the sensor can be reset to the factory settings (factory calibration data), after a v or T customer calibration has been performed.

6.4.1 Resetting v/T to Factory Calibration:

1. Press both buttons for approx. 5 s to display the menu window.
2. Select “Factory settings” and confirm the selection.
3. Select “Restore Settings” and confirm the selection.
4. The customer calibration data (v, T) has now been reset to the factory calibration data.

6.4.2 Resetting v to Factory Calibration:

1. Press both buttons for approx. 5 s to display the menu window.
2. Select “Calibration” and confirm the selection.
3. Select “V-CAL” and confirm the selection.
4. Select “V-FACTORY SETTINGS” and confirm the selection.
5. Select “Restore Settings” and confirm the selection.
6. The customer calibration data (v) has now been reset to the factory calibration data.

6.4.3 Resetting T to Factory Calibration:

1. Press both buttons for approx. 5 s to display the menu window.
2. Select “Calibration” and confirm the selection.
3. Select “T-CAL” and confirm the selection.
4. Select “T-FACTORY SETTINGS” and confirm the selection.
5. Select “Restore Settings” and confirm the selection.
6. The customer calibration data (T) has now been reset to the factory calibration data.

7. Self-Help / Maintenance

• If the measuring values are unrealistic, the first thing to check is the angle of inflow.
• Also check the sensor element for soiling. If dust has collected on the element, blow it off carefully with oil-free compressed air. If there is anything else on the sensor, clean it carefully using isopropyl alcohol and allow it to dry. Do not touch the velocity sensor with your fingers!
• If there is no output and indication, check the power supply.

8. Spare Parts / Accessories

• Stainless steel mounting plate HA010207
• USB interface cable HA010310

9. Technical Data

1. The accuracy statement includes non-linearity, hysteresis and repeatability.
2. T accuracy: at air flows ≥ 0.45 m/s (886 ft/min)
3. USA & Canada: class 2 supply required

Configuration Software

Limited Liability
E+E Elektronik shall not be held liable for any damages or consequential damages (for example, but not restricted to, loss of earnings, interruption of business, loss of information and data or any other financial losses) resulting from the installation, use or impossibility of use of an E+E Elektronik software product and any associated support services or non- performance of support services.

1. General Information
The configuration software can be downloaded free of charge at www.epluse.com/ee75. The configuration software provides a user-friendly alternative to the use of the buttons on the optional display module for adjusting the sensor to suit the relevant application or to calibrate / adjust the velocity and temperature settings.
System requirements: Windows XP or higher, interface USB 1.1 or higher.

NOTE:
Any use beyond these purposes is not permitted.
The permanent connection between EE75 and PC via the USB interface in normal operation may cause a malfunction and does not meet the CE-criteria.

2. Installation
NOTE:
Administrator authorisations may be required for problem-free installation of the EE75 configuration software.

1. During installation do NOT connect the EE75 to the PC using the USB Port.
2. Run “Setup.exe” to install the EE75 configuration software.
3. The InstallShield Wizard for the EE75 configurator is launched.
4. Follow the instructions to install the software.
5. Clicking the “Finish” button completes configuration software installation.

2.1 Installing the USB-Interface

NOTE:
The USB interface software must also be installled to allow your PC and the EE75
velocity sensor to communicate properly.

1. Connect terminals and USB-interface located in the back module of the EE75 enclosure under zero-potential conditions
2. Replace and secure the upper module of the enclosure
3. Connect EE75 to the supply voltage (VCC)
4. You can now connect the EE75 to your chosen USB Port on your PC (max. transmission distance 3 m).
5. The driver software will be installed automatically

If the EE75 configuration software and the associated USB interface have been set up correctly, a connection has been assigned to the EE75 USB to UART Bridge Controller on your PC’s Control Panel.

See Start / Settings / Control Panel / System / Hardware / Device Manager

6. The configuration software can now be opened by double-clicking the EE75 icon on your desktop.
7. Specify the selected USB Port (for details, see Configuration Software, chapter 3.1 – File)

8. Pressing the “Read” button will start the communication with the EE75 and downloads its configuration.

3. Menu Items
3.1 File
Load Settings: Opens the saved sensor configuration settings from an archive file on the PC.
Save Settings: Saves the displayed configuration settings in an archive file on the PC.
Select COM Port: Selects the USB interface used on your PC.

If the “Remember next time” box is checked, the selected interface will always be used in future.The number of the USB Port can be found under:
Start -> Settings -> Control Panel -> System -> Hardware -> Device Manager

Exit: Closes the configuration software.

3.2 Help
Provides general information on the configuration software.

4. EE75 Configurator

4.3 Display
With an optional display, the following can be set on the Display tab:
“Display Mode” drop-down input field:
– Single-line display
– Two-line display (factory setting)

“Backlight on” check box
– Activated = ON
– Not activated = OFF

4.4 Response Time

As described under Hardware, chapter 5.2 – Jumpers for Setting the Velocity Response Time, three different response times can be set.

Users can also assign a response time of between 1.5 and 40 s to each jumper position using the configuration software.

Example:
Jumper at position 1: changes from 2 s (factory setting) to 35 s.
The green pilot lamp next to the jumper position indicates which jumper position is currently set and consequently active.

Note: If the response time of the jumper currently active is changed and uploaded using the “Write” function, the sensor’s velocity response is switched without changing the hardware (jumper position).

4.5 Cross Section

The EE75 allows volumetric flow to be displayed in [m³/min] or [ft³/min.] (see Hardware, chapter 5.3 – Display Module with Buttons – Measurands).

The volume is calculated based on the flow velocity measured and the cross section. Consequently, the cross sectional area of the duct must be entered in [m²] or [ft²].

To make it easier to calculate the cross sectional area, the “Cross sect.” tab provides input assistance:

Circular: Measure and enter the duct diameter in [m] or [ft] – Press “calculate”
– The cross section is calculated and entered in the “Cross sectional area” field

Rectangular: Measure and enter the duct length and width in [m] or [ft] – Press “calculate”
– The cross section is calculated and entered in the “Cross sectional area” field
If the duct has a different shape or the cross-sectional area is already known, the value can, of course, also be entered directly in the “Cross sectional area” field, in [m²] or [ft²].

4.6 Probe Cable
The length of the probe cable (sensor with remote probe) should not normally be changed.
However, if it is necessary to do so, the new (modified) probe cable length must be entered on the “Probe Cable” tab. This virtually rules out additional measuring errors due to the modified cable length.
Example: You order an EE75 T3***K5 (5m / 16.4ft cable length) and then cut the cable with 3m (9.8ft). The new cable length of 2m (6.6ft) should be entered and uploaded using the “Write” function.

Notes:
– The cable length is measured from the centre of the sensor element in the sensor head to the point where it enters the enclosure (PG / screw connection).
– To increase the length of the probe cable, the instrument must be returned to E+E Elektronik.

Velocity and temperature calibration is not only possible using the buttons on the integrated display, the EE75 can also easily be calibrated / adjusted using the configuration software.

Note:
The configuration software automatically distinguishes between the low and high calibration points.
– If the selected calibration point is BELOW the centre of the measuring range, it is automatically recognised as the “low calibration point” (CAL LOW).
– If the selected calibration point is ABOVE the centre of the measuring range, it is automatically recognised as the “high calibration point” (CAL HIGH).

4.9.1 Information on 1-point v/T Calibration
If possible the selected calibration point should be similair to the working point (of the limited working range) of the sensor.

Example:
Working range v 8 – 12 m/s (1600 – 2400 ft/min) > calibration point at 10 m/s (2000 ft/min);
working range T 18 – 22 °C (64.4 – 71.6 °F) > calibration point at 20 °C (68 °F).

4.9.2 Information on 2-point v/T Calibration
v/T calibration / adjustment is performed at 2 different calibration points.
To ensure the smallest possible deviation in measuring results over the entire
measuring range, the two calibration points should be selected as follows:
– The low calibration point should be in the lower third of the measuring range.
– The high calibration point should be in the upper third of the measuring range.

Example:
EE75 T3***HV23 – measuring range = 0 – 2 m/s (0 – 400 ft/min)
– Low calibration point (V-CAL LOW) should be around 0.4 m/s (0…0.7).
– High calibration point (V-CAL HIGH) should be around 1.8 m/s (1.4…2).

4.9.3 V Calibration Procedure Using the Configuration Software
1. Position the sensor head in the middle of the reference system (wind tunnel).
2. Set the required calibration point in the reference system (wind tunnel).
3. Stabilise the probe at the reference velocity (for at least 1 minute).
4. Clicking on the “Velocity calibration” button opens the menu window shown below.
5. Enter the velocity displayed by the reference system in the “Reference value” input field.

6. Clicking “Save” adjusts the EE75 measuring value with the reference value.
7. In the case of 1-point calibration, the process is now complete.
8. For 2-point calibration, repeat steps 2-7.

4.9.4 T Calibration Procedure Using the Configuration Software
Click on the “Temperature calibration” button. The 1 or 2-point temperature calibration procedure is similar to the velocity calibration (see chapter 4.9.3 – V Calibration Procedure Using the Configuration Software).

4.9.5 Activating Factory Calibration
Clicking the “Activate factory calibration” button deletes the customer calibration data set for velocity and temperature and restores the factory settings.

4.10 Measuring Values

The configuration software allows the EE75 measuring values to be queried periodically on the “Measuring Values” index card.

If the “Activate automatic Query” function is activated, all measuring values are downloaded according to the specified interval and displayed in the desingated fields.

This function is particularly useful for checking sensors, which do not have the (optional) display module.

4.11 Information
The “Information” tab contains general information on the sensor. It also saves the date of the last customer calibration done with the configuration software.

HEADQUARTERS
E+E Elektronik Ges.m.b.H.
Langwiesen 7
4209 Engerwitzdorf
Austria
Tel.: +43 7235 605-0
E-mail: [email protected]
Web: www.epluse.com

SUBSIDIARIES
E+E Elektronik China
18F, Kaidi Financial Building, No.1088 XiangYin Road
200433 Shanghai
Tel.: +86 21 6117 6129
E-mail: [email protected]

E+E Elektronik France
47 Avenue de l‘Europe
92310 Sèvres
Tel.: +33 4 74 72 35 82
E-mail: [email protected]

E+E Elektronik Germany
Obere Zeil 2
61440 Oberursel
Tel.: +49 6171 69411-0
E-mail: [email protected]

E+E Elektronik India
801, Sakhi Vihar Road
400072 Mumbai
Tel.: +91 990 440 5400
E-mail: [email protected]

E+E Elektronik Italy
Via Alghero 17/19
20128 Milano (MI)
Tel.: +39 02 2707 86 36
E-mail: [email protected]

E+E Elektronik Korea
Suite 2001, Heungdeok IT Valley Towerdong, 13, Heungdeok 1-ro, Giheung-gu
16954 Yongin-si, Gyeonggi-do
Tel.: +82 31 732 6050
E-mail: [email protected]

E+E Elektronik USA
333 East State Parkway
Schaumburg, IL 60173
Tel.: +1 847 490 0520
E-mail: [email protected]

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References

• Sensor Technology: Humidity, CO2, Flow & Temperature Measurement
• Air flow sensor for industrial applications.

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