GM09-1 is a single-axis gaussmeter featuring touch-screen interface and rechargeable Li-ion battery compatible with the extensive range of Hirst Hall sensor probes. Built-in “App” modes ensure standard tests and measurements can be carried out with ease and minimal effort. Data-logging features allow the retrieval of data using a simple USB interface, no additional software is needed as the GM09 appears as a USB mass storage device.

Key features

A hand-held touch-screen general purpose gaussmeter (for determining magnetic field strength) with a range of built in application modes to make routine testing more user-friendly.
GM09 appears as a USB mass storage device when connected to a computer or device and no software is needed to access the stored (time stamped data) in standard .CSV file formats.
Application modes include (dependant on probes used):
- Magnet testing - pass/ fail within user defined bands with polarity.
- Magnetic Field testing – for standard and stringent safety levels or user defined pass / fail criteria.
- Residual magnetism testing – for standard levels or user defined pass / fail criteria.
- Fit-to-Fly testing for magnetic materials against IATA (and FAA guidelines) tests, this requires a High Sensitivity probe.
- Food Magnet Extractor testing with standard settings (8, 10, 12 kG) plus user defined pass / fail criteria.
- Occupational safety mode testing based on 1998 ICNIRP guidelines with DC testing using standard probes and AC testing using high sensitivity probes for AC fields up to 6kHz.
Rechargeable Lithium-ion battery with USB-C compatible charging (wall-plug or computer charging)
Easy to operate 3.5” multi-colour touch screen 320x480 px with backlight.
Intuitive easy to use menus with on-screen help and a dedicated knowledge base support website.

The GM09 Gaussmeter is the best device for those needing to measure magnetic field strength and magnetic flux density regularly on a daily basis with the simplest data access of any Hirst gaussmeter with built in application modes to make standard tasks even easier. With a one year guarantee and calibration certificate included, the GM09-1 Gaussmeter is ready to use and simple to operate.

Some example applications include:

Magnet polarity measurements, magnet strength testing. Testing Magnet calibrations.
Production testing : computer disk drive actuators testing, loudspeaker air gaps, electric motor air gaps.
Transformer Stray Field measurements.
Magnetic field strength testing for food industry separators.
Verifying compliance with IATA, IACO and FAA regulations on magnetism from packages to be shipped by air (High sensitivity probes only).
Goods inward and Quality Assurance Inspection.

Accessories

The GM09-1 gaussmeter uses standard Hirst GM07/8 Hall effect based gaussmeter probes :

AP002 Standard axial probe (1.5m cable length)
AP002HS High Sensitivity Axial probe (1.5m cable length) -optional
TP002 Standard Transverse Hall probe (1.5m cable length)
TP002SP0.6 Extra slim Transverse Hall probe (1.5m cable length)
TP002HS High Sensitivity Transverse Hall probe (1.5m cable length) - optional
TP002R Rugged Transverse Hall probe (1.5m cable length)

The GM09-1 kit contains:-

GM09-1 (Single Axis).
Transverse probe – TP02 (calibrated).
GM09-1 Calibration certificate.
Zero flux chamber.
USB-C charging / computer connection cable.
Carry case.

Accuracy
Measurement ranges	AUTO, ±3 mT, ±30mT, ±300mT, ±3.000T
Repeatability	Better than 0.5%
Accuracy	Better than ±1% Calibrated to standards traceable to the NPL National Physical Laboratory (UK)
Operational ranges
Resolution	2 microTesla, 0.02 Gauss (Oe), 160A/m
Full Specifications
Colours and materials	Anodised Aluminium with plastic end caps
Connectivity	USB-C compatible port for charging and data retrieval via mass storage device interface (like a USB flash memory stick with data saved in time-stamped .CSV format)
Dimensions / Weight	139x88x49mm / 390g
Maximum field sensed	±3T (dependant on probe in use)
Measurement modes	DC (with Min and Max), AC-Peak (with AC-Peak-Max), AC-RMS (with AC-RMS-Max)
Number of sensors	Single channel, 1 axis sensor probe
Power	Li-ion battery 3500mAh capacity, USB-C chargeable (computer or mains charger) battery life >4-hour continuous measurement time with sleep mode and auto power-off.
Standard cable length	1.5m
Time	Real time clock with time and date - Battery back-up >3 years
Units	Tesla, Gauss, Oersted (Oe), A/m (1mT = 10 Gauss (Oe) = 0.7967 kA/m)
Frequency Range	Static field (DC) and AC measurements (10Hz to 6kHz)
Display Rate	3 readings per second
Display	3.5” multi-colour touch screen 320x480 px plus backlight
Temperature Coefficient	Better than ±0.1% of reading/ºC including probe
Optimum Operating Temperature	20ºC – 40ºC
Optimum Storage Temperature	0ºC – 50ºC