HALL EFFECT PROBES

MPT Model (Miniature)

LPT Model (Limpet)

QUICK FACTS

  • There are two main families of probes manufactured by Group3, the MPT and the LPT series probes

  • Every Group3 probe is individually characterized at many hundred field values

  • Any Group3 probe can be used with any Group3 Teslameter

  • Probe cables can be ordered in any length up to 30m

  • A printed calibration data of the individual characterization tables for that particular probe is supplied.

  • To be use in conjunction with a DTM-151 or DTM152  for temperature compensation and DTM-133 or DTM-333 for no temperature compensation.

Probe Ordering Guide

(4-Range: 0.3, 0.6, 1.2 , 3.0 Tesla )

MPT     -    1 4 1     -     2        S

Probe Sensor Head

Series Model

MPT - Miniature

LPT -Limpet

Cable Length

Shielding

Probe Length, meters

S - Shielded

M - No Shielding

141 - With Temperature Compensation, standard sensitivity ,

         0.3, 0.6, 1.2, 3.0 Tesla Ranges

132 - No Temperature Compensation, standard sensitivity ,

         0.3, 0.6, 1.2, 3.0 Tesla Ranges

231With Temperature Compensation, high sensitivity ,

         0.03, 0.06, 0.12, 0.3 Tesla Ranges

230 - No Temperature Compensation, high sensitivity ,

         0.03, 0.06, 0.12, 0.3 Tesla Ranges

130 - For LPT , No Temperature Compensation, standard sensitivity , 

         0.3, 0.6, 1.2, 3.0 Tesla Ranges

Probe Ordering Guide

(Single Range Probes)

Choose from 0.3, 0.6, 1.2 , 3.0 Tesla  for Standard Sensitivity

Choose from 0.03, 0.06, 0.12 , 0.3 Tesla  for High Sensitivity

MPT     -    1 4 1     -    30   -    2        S

Probe Sensor Head

Series Model

MPT - Miniature

LPT -Limpet

141 - With Temperature Compensation, standard sensitivity ,

      

132 - No Temperature Compensation, standard sensitivity ,

 

231With Temperature Compensation, high sensitivity ,

 

230 - No Temperature Compensation, high sensitivity ,

      

130 - For LPT , No Temperature Compensation, standard sensitivity , 

    

Range

Cable Length

Shielding

Probe Length, 

meters

S - Shielded

M - No Shielding

03 - 0.03 Tesla for High Sensitivity, 0.3 Tesla for Standard Sensitivity

      

06 - 0.06 Tesla for High Sensitivity, 0.6 Tesla for Standard Sensitivity

 

12 - 0.12 Tesla for High Sensitivity, 1.2 Tesla for Standard Sensitivity

 

30 - 0.3 Tesla for High Sensitivity, 3.0 Tesla for Standard Sensitivity

          

 FEATURES

  • Probe cables can be ordered in any length up to 30 meters.

  • Unshielded cable has a diameter of 4.5 mm.

  • Shielded cable has a diameter of 6.3 mm

  • The probe head is usually on the end of a short (10 to 50 mm) length of twisted but unjacketed wires. This allows greater flexibility when mounting the probe head.

  • Various special configurations of probe head have been manufactured to special customer requirements - if one of the existing types of probe is not suitable for your application, please contact your Group3 representative.

  • The operating temperature range of the probe and instrument is 0 to 50 ° C

  • A range of probe holders is available for both series of probe heads. One, two and three axis probe holders have been manufactured in aluminium and non-metallic materials.

  • A printed booklet of the individual characterization tables for that particular probe is supplied.

 SPECIFICATIONS

 MPT Series 

  • miniature head, epoxy resin-encapsulated 

  • sensitive area 1.0 x 0.5 mm

  • housed in a probe head of 14 (L) x 5 (W) x 2 mm thick

 

       For full accuracy over a range of temperatures the DTM-151 or DTM-152 should be used with the following probes:

                                                       

                            MPT Series – 132, 132A, 141, 230, 231

     

       MPT series with Standard Sensitivity

 

       Probe             Probe head size                Active Area                         Max Field                  Accuracy                 Tempco                   Zero Drift

                                       (mm)                              (mm)                                                                   at 25° C                 (ppm /°C)                    (µT/°C)

 

   

    MPT-141                14 x 5 x 2                          1 x 0.5                                    3T                         ± 0.01%                       ± 5                             ± 1

   

    MPT-132                14 x 5 x 2                          1 x 0.5                                    3T                         ± 0.03%                       - 80                            ± 40

 

 

      MPT series with High Sensitivity

 

      Probe             Probe head size                Active Area                         Max Field                   Accuracy                  Tempco                   Zero Drift

                                      (mm)                              (mm)                                                                    at 25° C                  (ppm /°C)                   (µT/°C)

 

   

    MPT-231                14 x 5 x 2                        1 x 0.5                                    0.3T                        ± 0.03%                      ± 20                           ± 1

 

    MPT-230                14 x 5 x 2                        1 x 0.5                                    0.3T                        ± 0.03%                       -600                          ± 8

 

 

 LPT Series 

  • sensitive area 1.6 x 4.0 mm

  • housed in a probe head of 13 x 10.5 x 2.5 mm thick (LPT-130 and LPT-230)

  • 14 x 14 x 2.5 mm thick (LPT-141 and LPT-231)

       

      For full accuracy over a range of temperatures the DTM-151 or DTM-152  should be used with the LPT-141 and LPT-231.

 

                          LPT series performance standard sensitivity - 130, 141, 230, 231

 

      LPT series with Standard Sensitivity  

      Probe             Probe head size                Active Area                         Max Field                  Accuracy                 Tempco                   Zero Drift

                                       (mm)                              (mm)                                                                  at 25° C                 (ppm /°C)                    (µT/°C)

     

     LPT-141             14 x 14 x 2.5                       4 x 1.6                                      3T                        ± 0.01%                        ± 5                            ± 1

 

     LPT-130            13 x 10.5 x 2.5                     4 x 1.6                                      3T                        ± 0.03%                        -60                            ± 12

 

 

 

 

 

     LPT series with High Sensitivity  

 

     Probe             Probe head size                Active Area                         Max Field                  Accuracy                 Tempco                   Zero Drift

                                       (mm)                              (mm)                                                                 at 25° C                 (ppm /°C)                    (µT/°C)

 

     

     LPT-231            14 x 14 x 2.5                        4 x 1.6                                    0.3T                      ± 0.03%                       ± 20                           ± 1

 

     LPT-130            13 x 10.5 x 2.5                     4 x 1.6                                    0.3T                      ± 0.03%                        -600                          ± 8

 

 

 

    CUSTOM-MADE PROBES

 

    Group3 creates custom-made probes to suit your field measurement needs. Below are some of the customized probes we can create for you:

  • High field measurement of up to 8 Tesla.

  • Single range probe to any of the following: 

    • Standard Sensitivity - 0.3 Tesla, 0.6 Tesla, 1.2 Tesla or 3.0 Tesla​

    • High Sensitivity - 0.03 Tesla, 0.06 Tesla, 0.12 Tesla or 0.3 Tesla

  • Probe isolation using circular MIL spec connectors.

  • Rotating probe head side using brush-less slip rings such as a MERCOTAC connector.

    NEED TO DISCUSS FURTHER? 

 
 
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© 2018 by Joey Aguas for Group3 Technology Limited, Auckland, New Zealand