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Group3 HTM-121 Operation Manual

Handheld digital teslameter with hhp-101 hall effect probe
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Operations Manual
Group3 Technology Ltd.
2 Charann Place, Avondale
Auckland 1026 , New Zealand
Group3 reserves the right to change the specifications at any time without notice.
GROUP3 TECHNOLOGY LIMITED
HTM-121
Handheld Digital
Hall Effect Probe
Made in New Zealand
PO Box 71-111, Rosebank, Auckland 1348, New Zealand
Email:
sales@group3technology.com
Web:
http://www.group3technology.com
Calibration/Repair:
www.group3technology.com/service
WWW.GROUP3TECHNOLOGY.COM
Teslameter
with HHP-101
Phone: +64 9 828 3358
Fax:
+64 9 828 3357
04092024-HTM-121

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  • Page 1 Phone: +64 9 828 3358 2 Charann Place, Avondale Fax: +64 9 828 3357 Auckland 1026 , New Zealand Email: sales@group3technology.com Web: http://www.group3technology.com Calibration/Repair: www.group3technology.com/service Group3 reserves the right to change the specifications at any time without notice. 04092024-HTM-121 GROUP3 TECHNOLOGY LIMITED WWW.GROUP3TECHNOLOGY.COM...
  • Page 2 INTRODUCTION Thank you for purchasing and using a Group3 Handheld Digital Teslameter and Hall Effect Probe. We hope you will join the many thousands of users worldwide who are enthusiastic about our products. The HTM-121 Handheld Teslameter and its accompanying HHP-101 Handheld Probe is the latest product of Group3 and presents an advanced suite of magnetic field measuring technology.
  • Page 3 Independently Calibrated Teslameter & Hall Probe up to ±2.2T • Data logging via LabView VI • HHP-101 Probes can be interchangeable to any HTM-121 Teslameter • Calibration factors of the probe is stored in an SPI EEPROM inside the probe handle. Power Input Requirement: •...
  • Page 4 Ensure you have adequate personal protective equipment when using the instrument. • Do not use the equipment if the battery is found to be defective nor attempt to open and repair the unit. • Always practice safe use of equipment. • GROUP3 TECHNOLOGY LIMITED WWW.GROUP3TECHNOLOGY.COM...
  • Page 5 Command to return to the previous screen. Note: RESET Unit - Press Up and Down arrow keys simultaneously, then press ENTER to do a unit RESET. To Powering ON or OFF the HTM-121, press the Power button for 3 seconds. GROUP3 TECHNOLOGY LIMITED WWW.GROUP3TECHNOLOGY.COM...
  • Page 6 Units Showing the Field and Temperature units, Battery Current and Battery Voltage. Relative Mode Indicates the Relative Mode and Stored Reference. Serial Comms Showing the HTM-121 Serial default settings that matches the LabView Interface default settings. GROUP3 TECHNOLOGY LIMITED WWW.GROUP3TECHNOLOGY.COM...

  • Page 7: Relative Mode

    Batt Volts Shows battery voltages RELATIVE MODE Rel Mode Shows selection: Stored and Sampled mode Stored Reference Showing stored field reading SERIAL COMMS Showing the HTM-121 Serial default settings that matches the LabView Interface default settings. GROUP3 TECHNOLOGY LIMITED WWW.GROUP3TECHNOLOGY.COM...
  • Page 8 Battery charges when USB cable (supplied) is connected to a USB port of PC or a 5V USB external charger. HTM-121 LabVIEW VI Installation • See installation procedure text file on the downloadable installer files for details on the Group3 website. GROUP3 TECHNOLOGY LIMITED WWW.GROUP3TECHNOLOGY.COM...
  • Page 9 RANGE shows the logged serial port number. • HTM-121 has the capability to DATA LOG a field measurement session. The indicator lights up GREEN and it will start data collecting and saving files in Text format on Notepad. Data Log files save in Local Disk(C:)>G3T>HTM121>Logs ▪...

  • Page 10: Field Tab

    HTM-121 USING LABVIEW VI C. REAL-TIME GRAPHICAL Display: Featuring a dynamic graphical representation of magnetic field readings, the LabView provides users with a clear and immediate visualization of the data, enhancing the accuracy of measurements and decision-making processes. • FIELD TAB Enhances the user’s ability to analyse and interpret magnetic field data by providing a...

  • Page 11: Unit Reset

    ▪ 121 that is still running. UNIT RESET Can be done by pressing the Up and Down arrow keys, then press ENTER. And Power ON again the HTM-121. RUNNING AND RUN CONTINUOUSLY Run Continuously Running HTM-121 LabView VI able to: •...

  • Page 12: Troubleshooting

    • Display shows PROBE OPEN CCT – Turn off the HTM-121 by pressing the power button or press the Up and Down arrow keys and Enter key into the HTM-121 keypad to RESET the unit or to re-start the unit.

  • Page 13: Connecting The Hall Probe

    Before handling the probe, please read the following: Group3 HHP-101 Hall probe are engineered to deliver a high degree of robustness, particularly for a device of its size and precision. However, it is most important that certain precautions be taken when handling and installing probes so that they are not damaged or destroyed, and to ensure the preservation of its calibration integrity.

  • Page 14: Limited Warranty

    LIMITED WARRANTY Group3 Technology Ltd. (hereinafter called the Company) warrants instruments and other products of its manufacture to be free from defects in materials and workmanship that adversely affect the product's normal functioning under normal use and service for a period of one year from the date of shipment to the purchaser.
  • Page 15 Changes to v1.0 040924 • Initial issue. Copyright 2024 G3 121- V1.0 04092024 www.group3technology.com GROUP3 TECHNOLOGY LIMITED WWW.GROUP3TECHNOLOGY.COM...

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