PHYWE Cobra4 Sensor-Unit Tesla Operating Instructions Manual

Operating instruct

i

ons

Cobra4 Sensor-Unit Tesla, ± 1 Tesla

guidel

ines.

12652-00

PHYWE Systeme GmbH & Co. KG
Robert-Bosch-Breite 10
D-37079 Göttingen

Phone [phone]
Fax [phone]
E-mail [e-mail]

The unit complies with
the corresponding EC

CONTENTS

Fig. 1: 12652-00 Cobra4 Sensor-Unit Tesla.

1 SAFETY PRECAUTIONS

2 PURPOSE AND CHARACTERISTICS

3 FUNCTIONAL AND OPERATING ELEMENTS

4 NOTES ON OPERATION

5 HANDLING

6 TECHNICAL SPECIFICATIONS

7 PARTS SUPPLIED

8 ACCESSORIES

9 NOTES ON THE GUARANTEE

10 WASTE DISPOSAL

• Read these operating instructions carefully and com-
pletely before putting your Cobra4 Sensor-Unit Tesla into
operation. In addition, also similarly read the operating
instructions for the transmission device (Cobra4 Wire­less-Link, Cobra4 USB-Link or Cobra4 Mobile-Link) that
is to be used for the acquisition of measured values be­fore operating the Sensor-Unit. With these measures you
protect yourself and your equipment.

• Only use the instrument for the purpose for which it was
designed.

• Only use the instrument in dry rooms in which there is no
risk of explosion.

• Protect your Cobra4 Sensor-Unit Tesla from dust, mois-
ture and vapours. Clean it with a slightly moist, lint-free
cloth. Aggressive cleaning agents and solvents are un­suitable.

• Take care that no liquid penetrates in through the open-
ings in the housing, as the Cobra4 Sensor-Unit Tesla
would then suffer damage.

• When using the Sensor-Unit outdoors, ensure that nei-
ther rainwater nor spray penetrate into the housing.

• Only use the experimental set-up for the use for which it
is intended.

• Do not open the Sensor-Unit..

• Only connect the data output of the Cobra4 Sensor-Unit

• The present-day state of software development makes it

Tesla to one of the three measured data recording in­struments that are intended for it.

1

www.phywe.com, © All rights reserved 12652-00 / 3611

impossible to guarantee that a product is free of faults.
PHYWE Systeme GmbH & Co. KG therefore does not
take on any liability for damages that occur during the
installation or the use of the instrument.

2 PURPOSE AND CHARACTERISTICS

Cobra4-Unit Tesla serves to measure the magnetic field
strengths of constant and alternating fields in combination
with a tangential or axial Hall probe.

According to the application, Cobra4 Sensor-Unit Tesla can
be connected to one of the following measured data re­cording instruments and pass measured data to it:

• to Cobra4 Wireless-Link (12601-00) for wireless trans-
mission to a computer,

• to Cobra4 USB-Link (12610-00) for data transmission to
a computer via a USB-cable,

• to the hand-held measuring instrument Cobra4 Mobile-
Link (12620-00).

The interface to measured data recording instruments is on
the front side of the Sensor-unit, whereby mechanically se­cure engagement is ensured by a locking mushroom and a
hole.

For measurements of magnetic field strengths, a tangential
(13610-02) or an axial (13610-01) Hall probe can be con­nected to the Sensor-Unit, according to the application. It has
a 5-pin DIN socket for connection of the Hall probe.

In combinations of the Sensor-Unit with USB-Link
(12610.00), EM-disturbances can end the measurement pro­gramme. A restart (reset) of the device must then made by
unplugging and re-plugging the USB-cable. Measurement
must then be started anew in the “Measure” programme.

In extreme cases, USB-communication can be re-established
by restarting the computer.

5 HANDLING

This section describes how to put the Sensor-Unit into opera­tion and record measured data. Please read carefully through
it to avoid failure or faulty operation.

5.1 Putting the Cobra4 Sensor-Unit Tesla into operation

Check that the current version of the measure software
package and the Cobra4 module are installed.

Updating of the software is free via:
www.phywe.com… software … measure
measure main programme
measure Cobra4 module
Free updating of the software can also be made with the
measure DVD.

Connect your Cobra4 Sensor-Unit Tesla to one of the three
measured data recording instruments via the engaging 15-pin
plug connection; the Sensor-Unit is ready to use after a brief
starting phase (self-calibration), as voltage is supplied by the
measured data recording instrument.
Further information on the control of the measured data re­cording instruments is given in their operating instructions..

3 FUNCTIONAL AND OPERATING ELEMENTS

3.1 Operating elements

Cobra4 Sensor-Unit Tesla has no manual operating ele­ments. Operation of it is made via the Cobra4 Mobile-Link
hand-held measuring instrument, or via a computer to which
either a Cobra4 USB-Link or a Cobra4 Wireless-Link has
been connected, as soon as it has been connected to the se­lected one of the three allowable measured data recording
instruments.

4 NOTES ON OPERATION

Together with Cobra4–Wireless-Link, Cobra4–USB-Link and
Cobra4–Mobile-Link, Cobra4–Sensor-Unit Tesla fulfils the
technical requirements that are compiled in current European
Community Guidelines. The characteristics of this product
qualify it for the CE mark.

This instrument is only to be operated under specialist super­vision in a controlled electromagnetic environment in re­search, educational and training facilities (schools, universi­ties, institutes and laboratories).
This means that in such an environment no mobile phones
etc. are to be used in the immediate vicinity. The individual
connecting leads are each not to be longer than 2 m.

The instrument can be so influenced by electrostatic charges
and other electromagnetic phenomena that it no longer func­tions within the given technical specifications. The following
measures reduce or do away with disturbances:
Avoid fitted carpets; ensure potential equalization; carry out
experiments on a conductive, earthed surface, use screened
cables, do not operate high-frequency emitters (radios, mo­bile phones) in the immediate vicinity.

6 TECHNICAL SPECIFICATIONS

(Typical for 25°C)
Operating temperature range 5...40°C

Relative humidity < 80%

Measuring range, constant field

- ± 1 T ; Resolution ± 1 mT

- ± 100 mT ; Resolution ± 100 µT

- ± 10 mT ; Resolution ± 10 µT

- Each measurement range can be

compensated up to the final value of
the particular measurement range.

- Accuracy approx. ± 2 % of measure-
ment range final value

Measuring range, alternating field from 15 Hz to 1 kHz

- 1 T ; Resolution 1 mT

- 100 mT ; Resolution 100 µT

- 10 mT ; Resolution 10 µT

- Alternating fields are measured with a

root-mean-square rectifier (RMS)

- No measurement range compensation

- Accuracy approx. ± 5 % of measure-

ment range final value

Scan rate, maximum (Hz) 5
Dimensions (L x W x H in mm) 60 x 70 x 35
Weight (g) 100

2

www.phywe.com, © All rights reserved 12652-00 / 3611

7 PARTS SUPPLIED

The extent of delivery is:

• Cobra4 Sensor-Unit Tesla 12652-00

• Operating instructions

8 ACCESSORIES

Hall probe, axial 13610-00
Hall probe, tangent., prot. cap 13610-02

9 NOTES ON THE GUARANTEE

We guarantee the instrument supplied by us for a period of
24 months within the EU, or for 12 months outside of the EU.
Excepted from the guarantee are damages that result from
non-observance of the operating instructions, from improper
handling of the instrument or from natural wear.
The manufacturer can only be held responsible for the func­tion and technical safety characteristics of the instrument,
when maintenance, repairs and alterations to the instrument
are only carried out by the manufacturer or by personnel who
have been explicitly authorized by him to do so.

10 WASTE DISPOSAL

The packaging consists predominately of environmentally
compatible materials that can be passed on for disposal by
the local recycling service.

PHYWE Systeme GmbH & Co. KG
Abteilung Kundendienst (Customer Service)
Robert-Bosch-Breite 10
D-37079 Göttingen

Phone [phone]
Fax [phone]

Should you no longer require this product, do
not dispose of it with the household refuse.

Please return it to the address below for
proper waste disposal..

3

www.phywe.com, © All rights reserved 12652-00 / 3611