HALL EFFECT PROBES
MPT Model (Miniature)
LPT Model (Limpet)
QUICK FACTS
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There are two main families of probes manufactured by Group3, the MPT and the LPT series probes
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Every Group3 probe is individually characterized at many hundred field values
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Any Group3 probe can be used with any Group3 Teslameter
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Probe cables can be ordered in any length up to 30m
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A printed calibration data of the individual characterization tables for that particular probe is supplied.
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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 )
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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
231 - With 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
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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 ,
231 - With 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
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Probe cables can be ordered in any length up to 30 meters.
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Unshielded cable has a diameter of 4.5 mm.
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Shielded cable has a diameter of 6.3 mm
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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.
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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.
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The operating temperature range of the probe and instrument is 0 to 50 ° C
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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.
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A printed booklet of the individual characterization tables for that particular probe is supplied.
SPECIFICATIONS
MPT Series
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miniature head, epoxy resin-encapsulated
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sensitive area 1.0 x 0.5 mm
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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)
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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
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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)
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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
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LPT Series
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sensitive area 1.6 x 4.0 mm
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housed in a probe head of 13 x 10.5 x 2.5 mm thick (LPT-130 and LPT-230)
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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
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Probe Probe head size Active Area Max Field Accuracy Tempco Zero Drift
(mm) (mm) at 25° C (ppm /°C) (µT/°C)
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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
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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:
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High field measurement of up to 8 Tesla.
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Single range probe to any of the following:
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Standard Sensitivity - 0.3 Tesla, 0.6 Tesla, 1.2 Tesla or 3.0 Tesla​
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High Sensitivity - 0.03 Tesla, 0.06 Tesla, 0.12 Tesla or 0.3 Tesla
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Probe isolation using circular MIL spec connectors.
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Rotating probe head side using brush-less slip rings such as a MERCOTAC connector.
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