top of page

DTM-151 Series

DS Model (Bench, Serial)

PS Model

Panel Mount, GPIB

QUICK FACTS

  • High accuracy - fully temperature compensated

  • Resolution of 1 part in 600,000

  • 4 ranges

  • Maximum field 3 Tesla

  • 7 digit display

  • Either RS232 or IEEE488/GPIB communications

  • Accuracy is 0.01% of reading + 0.006% of full scale when used with MPT-141 probe

  • Temperature range for instrument and probe      0 to 50° C

  • Best use in conjunction with an MPT-141 or LPT-141 for standard sensitivity or an MPT-231or LPT-231 Hall Effect Probes for high sensitivity, low-field operation.

Ordering Guide

​​

D T M     -    1 5 1     -     D        S

Product Initials

DTM - Digital Teslameter

Series Model

Mount

Style

D - Bench Top

P - Panel Mount

151 - With Temperature Compensation
133 - No Temperature Compensation
152 - With Temperaure Compnesation, 
         Touchscreen Display
351 - With Temperature Compensation, 3-Axis
350 - No Temperature Compensation, 3-Axis
        

Communication

S - Serial RS232

G - GPIB, IEEE-488

​

FEATURES

  • Because the probe characterisation information is stored in the probe assembly itself, any Group3 probe can be used with any Group3 DTM. However for full accuracy the DTM-151 should be used with a probe that has temperature compensation circuitry.

​

  • Two buttons on the front panel are used to select the operation of the teslameter. The following modes can be selected for the display - magnetic field, peak hold of magnetic field, AC component of field, probe temperature.

​

  • Digital filtering (time averaging) can be enabled to suppress short term fluctuations.

​

  • Several teslameters (up to 31) with serial communications can be formed into a local communications loop, all of them talked to by the one serial port on the control computer. The system can be operated in a trigger mode, where the timing of the measurements by several teslameters can be synchronised.

​

  • Internal switches select serial data format, baud rate, device address, string terminators, filtering, gauss or tesla units, data format, service request action, EOI action, and reset system to defaults.

​

  • Two analog outputs are available. These are a buffered version of the raw probe signal, and are not corrected for linearity or temperature.

​

  • All models are available without display or front buttons, for true “Black box” requirements.

​

  • Panel mount versions are available, and panels with correct cut-outs and mounting hardware.

 SPECIFICATIONS

   DTM-151 performance summary when combined with the listed probe.

 

   Probe         Active area (mm)        Resolution of display        Max field         Finest resolution       Accuracy at 25°C      Tempco      Zero Drift   

                                                                                                                                                                                                                     ppm /°C            µT/°C

 

 

  LPT-141               4 x 1.61 in                       600,000                           3T                          1µT                              ± 0.01%                    ± 10                     ± 1

  LPT-231               4 x 1.61 in                       600,000                        0.3T                       0.1µT                              ± 0.03%                   ± 25                     ± 1

  MPT-141              1 x 0.51 in                       600,000                          3T                           1µT                              ± 0.01%                    ± 10                     ± 1

  MPT-231              1 x 0.51 in                       600,000                       0.3T                        0.1µT                              ± 0.03%                   ± 25                     ± 1

 

  The following specifications refer to DTM-151 with LPT-141 probe (standard size probe).

 

  DTM-151 WITH LPT-141 PROBE (LIMPET PROBE)

 

  Four ranges, selectable from front panel:

          1. 0.3
          2. 0.6
          3. 1.2
          4. 3.0    tesla full scale

 

   Note: Resolution depends on the range selected, and whether the digital filtering is enabled.

              Available at the serial ⁄ GPIB port is greater than that of the display.

   

   

         DTM-151 with LPT-141 probe Filtering ON

 

         Range selected                          Resolution (µT) Display              Resolution (µT) serial/GPIB                                           

                       0.3 tesla                                            1                                                                0.1

                       0.6 tesla                                           2                                                                   1

                       1.2 tesla                                            4                                                                   1

                       3.0 tesla                                          10                                                                  1

 

 

   

         DTM-151 with LPT-141 probe Filtering OFF

 

        Range selected                          Resolution (µT) Display              Resolution (µT) serial/GPIB                  

                       0.3 tesla                                          5                                                              0.1

                       0.6 tesla                                        10                                                                 1

                       1.2 tesla                                         20                                                                 1

                       3.0 tesla                                        50                                                                 1

​

​

         Absolute Accuracy

                  ± 0.01% of reading ± 0.006% of range at 25° C

 

        Temperature Stability

​

  •          scale factor: ± 5 ppm of reading /°C typical, ± 10 ppm of reading /°C max.

  •          zero drift: ± (1uT + 0.0003% of full scale ) /°C max.

  •          Effect of probe cable: add -3ppm /°C for each metre of probe cable.

 

 

         Frequency

                DC, or in AC mode 8 to 3,000 Hz

       

         Update rate

               10 fully corrected measurements per second

 

         Display

                7 digit, red LED. 8 additional indicators for range, units, peak hold and filter

 

         Enclosure

               All metal, with tilt stand on bench models, bezel mount on rack models

 

         Dimensions

               217 x 125 x 50mm, weight 1.2 kg

Recommended Probes for DTM-151 Teslameters 

MPT-141

LPT-141

Accessories for DTM-151 Teslameters 

Fibre Optic Cable

FTR - Fibre to RS232 Adapter

+

+

+

RIU 800 - Remote Interface Unit

bottom of page