Serviciencia, S.L.U. - Versión en Castellano (clic aquí)

 

- 1D, 2D and 3D Helmholtz Coils -

 

 
We make some models in series.  We can also supply a great variety of special coils upon request, for many applications.
 

Standard coils available by the moment, with Ferronato® trademark

 

BHC-2 and BHC-2RF

 (New)

Miniature calibration coils, ideal to check magnetometers at the field, these also have many other applications.

BH300HF-3-B

 (New)

Three axes coil-set of 300 mm in nominal diameter, to operate at high frequencies to about 300 kHz.

-  Details of the BHC-2  -

-  Details of the BHC-2RF  - -  Click here for more details  -

BH300-3-A

Three axes coil-set of 300 mm in nominal diameter, for laboratory and general uses. It can be also supplied in versions of one or two axes.

BH1300-3-A

Three axes coil-set of 1300 mm in nominal diameter, for laboratory and general uses. It can be also supplied in versions of one or two axes.

-  Click here for more details  -

-  Click here for more details  -

BH600-3-B

Three axes coil-set of 600 mm in nominal diameter, for laboratory and general uses. It is an improved version of the discontinued BH600-3-A. It can be also supplied in versions of one or two axes.

BH1300-3-C

A set same as the BH1300-3-A, excepting in the windings. Better suited to generate alternate fields (AC).

-  Click here for more details  -

-  Click here for more details  -

BHC2000-3-A   (New)

BHC2000-3-B               

Square, of 2 metres. Three-axis (3D).

Two different windings.

(See DUT stand and flooring

in "Accessories", in below)

BHC3000-3-A   (New)

(BHC4000-3-A)               

Square, of 3 - 4 metres. Easy transportation and carry-in.

 

-  Click here for more details  -

-  Click here for more details  -

BM3-2000-3A / BM4-2000-3A

BM3-3000-3A/BM4-3000-3A

                (New)

 

Merritt coils, square, of 3 and 4 metres. Easy to transport and to install.

   

-  Click here for more details  -

 
 

Versions for high frequencies: We can supply versions of our BH300, BH600 and BH1300 standard sets for high frequency operation, with a reduced number of turns adapted to the application of the Customer.              

Optional orthogonality to ± 0,1º:  Thanks to a new procedure for measuring the orthogonality we can offer as an option our standard and special coil-sets, of up to 600-mm in diameter, with an orthogonality error < 0.1º, or even less in some cases. To know more about this topic two PDF documents can be get by these links:  NAS03-i   and    NAS04-i             

 

Accessories

PBH1300-P/R-1

Supporting stand for BH1300-xx. To place the coil-set at a comfortable height. That also reduces the distorting effect due to the iron, or steel, what could be located under the floor surface.

We also supply alternatives for coils of other dimensions.

Stands for DUT

Stands for Device Under Test, for standard coil-sets and special ones.

 

-  Click here for more details  - A PDF page. - Click here for more details - a PDF page -

Stands for 3D magnetic mapping

These allow to place a probe in the X/Y/Z space with a precision of ±1 mm, for the study of the magnetic field homogenity.

Its design is adaptable to different coil dimensions.

Simulation of rotation in microgravity

Frictionless, non-magnetic, rotating stand for device under test, especially for picosatellites.

 

  - Click here for more details - a PDF page -

DUT Stand

for BHC2000-3-A/B

 (New)

 

Stands for Device Under Test, for sets of 2 metres.

Elevated flooring

for BHC2000-3-A/B

 (New)

 

Flooring modules, for sets of 2 metres.

- Click here for more details - a PDF page - - Click here for more details - a PDF page -

MG500-1A

 (New)

 

Non-magnetic rotating stage of 500 mm, load capacity 50 kg.

Other dimensions on request.

DUT stand for

 BH300-3-A and BH300HF-3-A

(New)

Economical stand for devices under test, for sets of 300-mm.

- Click here for more details - a PDF page - - Click here for more details - a PDF page -

 

Price List of all our standard coil-sets (a PDF page): -click here to download-

 

Helmholtz coil? Helmholtz coil-set? Is there some confusion? See our definitions in a PDF document:   - Click here -

 

Comments on aspects of design of the BH300/600/13400 family - Click here -

 

 Applicación Note about the definition of field homogeneity  - Click here -

 

Coil-sets for higher field homogeneity

We can manufacture coil assemblies of three, four, or more coils per axis. Among the best known and more used are the two named as Braunbek coils and Barker coils, both of four coils per axis.

In here you could found a brief document (in PDF format) with two constructive examples of Braunbek and Barker coils on three axes:        - Click here -

 

Supply of single coils:

    We can supply single coils, as a spare part for these standard sets or for to be used on another assemblies, for diverse applications or experiments. The coils corresponding to the BH300/600/1300 family are batch produced and would have a substantially lower price than the ones specially made with other characteristics. In addition, the quadrangular coils are quite more costly than the circular ones.

 

Examples of special coils already produced

 

   A coil pair of 1260 mm of effective diameter, shielded in copper tube. Well suited for the study of small magnetic screens (shields) and the effects of a low magnetic field in different objects or devices. It is feasible a sealed construction  for outdoor use.

   A set of coils in three axes, of 491 mm in diameter, specially designed to fit the interior of a cylindrical magnetic shield supplied jointly. It combines circular and square coils for an optimal use of the space. Each coil can be removed and re-installed as advisable.

A coil-set of 270 mm (larger pair), for three axes. It generates 500 microT/A per axis, to 2 mT (20 Gauss) in a steady way. Specially constructed to be introduced in a test hole of 300 mm in diameter. A very strong assembly.

A coil-set in a two layers magnetic shield. With a solenoid (diam. 338 mm) and a cubic set of three coil pairs. It has a maximum access space for that shield size.

Three-axis coil-set of 800 mm in diameter. It generates 333 microT/A (3.33 G) on each axis, to 1 mT (10 G) in a steady way. DC and AC.

It is shown with a power pair of 300 mm installed at its centre.

A power coil-set, on one axis, of 300 mm in diameter.  It generates  850 microT/A, to 8,5 mT (85 G) in a steady way. DC and AC.

 It is shown also in the preceding picture.

Helmholtz for radiofrequencies.

Three-axis coil-set of 600 mm in diameter, for laboratory and general uses. It generates fields to 2 MHz.

Three-axis. Four coils per axis. The larger coils are of about 600 mm by side.

Minimum obstruction on the Z-Y plane due to the coils.

Better field homogeneity than Helmholtz coil-sets of similar size.

Designed for experiments with polarized neutron beams it could be useful in other aplications.

Of 156 mm effective diameter. To 50 mT (500 G) in a steady way. It could include a second pair for high frequencies and a sample holder (as in the photo). Well suited for  magnetoelectric studies. Of 300 mm in nominal diameter. High power on three axes. To 4 mT (40 Gauss) on any axis. To 6.5 mT (65 G) on Z-axis.
Of 1600 mm in diameter, for high frequencies (>1MHz), with pedestal and with  stand of variable height for DUT. Supplied dismounted.

We can supply coils like these with diameters to 1800 mm, for low and high frequencies.

 

Of 1000 mm in diameter, to 5 mT in steady way with low heating.

Weight: 143 kg.

For environments at high temperatures (ovens).

Of 173 mm in diameter. To 13.7 mT in steady way in environments at 21 ºC. To 6.4 mT in environments at 160 ºC. Lower fields at 200 ºC.

Of 1,000 mm by mean side. To 8.4 mT steady way with a moderated heating. To 12,5 mT with 50% duty cycle.

Weight: 277 kg.

Optional: DUT table and pedestal with castors.

High power, water cooled

Of 40 mm in effective diameter.

For high frequencies (> 100 kHz).

Field/Current ratio: 720 microT/A.

To 29 mT (290 G), in DC and AC.

Of 57 mm in effective diameter. Field/Current ratio: 5.2 mT/A. To 100 mT (1000 G) in a steady way. DC and AC operation.

Of 80 mm in effective diameter.

Field/Current ratio: 25 mT/A.

To 150 mT (1500 G) in a steady way. DC and AC operation.

Of 48 mm effective diameter. To 75 mT  in DC, steady way.

With some changes it could reach to 100 mT or operate in AC.

Body in Cu 99,95% (OF).

Of 77 mm in efective diameter.

B/i ratio: 3.7 mT/A.

To 200 mT in DC, steady.

Interior diameter: 25 mm.

Exterior diameter: 143 mm.

Sensing coils for variable magnetic flux (for fluxmeters)

BHS500-A

Of 500 mm in diameter, with high sensitivity. Measuring Constant: 0.006 cm.

The coils are shielded against electric field disturbances.

It is ideal for the measurement of the magnetic moment  in magnets.

The frame allows to install many kinds of accessories.

   

Please, feel free in asking us for further details

   

All the coils are made robust but with a reasonable weight, with proven non-ferromagnetic materials and accurately. In all cases the produced field by the Helmholtz pairs is less than 1% off the theoretical value.

 


 

Updated: 14-Jul-2017