Gauss meter is unlike the emf meter that covers the measurements of both electric field, magnetic field, and electromagnetic field. This device is intended just to measure the magnetic field only.
Whether the purpose is either to measure the magnetic field itself or to check the limit exposure to magnetic field radiation (one of emf radiation), this device is appropriate to apply. You can measure how much radiation you receive from magnetic field sources around you such as power lines, cell phones, appliances, computers, wiring, etc.
Magnetic field can be static and dynamic. The static one (DC) is such as from earth magnetic and battery-powered electronic devices, while the dynamic one (AC) is such as from AC-powered devices. Another example of the dynamic one is the underground wire locator; you inject electricity into the wire with a certain frequency and the wire will be magnetic.
How Gauss Meter Works
Two things to get a better understanding of how the gauss meter works: Hall effect and Lorent force.
Gauss meter works making use of the Hall effect. The semiconductor of the Hall effect sensor is charged with current. The magnetic field will pull or push electrons in the semiconductor and then creating voltage differences. This voltage is proportional to the magnetic field strength.
Magnetic field has a direction (expressed in X, Y, and Z). If the magnetic field direction is perpendicular to the current flow of the sensor, it will attract or push electrons at the maximum level. Herewith you can measure the magnetic field properly and accurately.
Unfortunately, the magnetic field is invisible, we don’t know the direction. Fortunately, there is a 3-axis Gauss meter that employs three sensors for three axis direction. The reading of the three sensors are calculated using root mean square. You can easily get the reading result with high confidence.
Simply, Gauss meter can be a 3-axis sensor or a 1-axis sensor.
When we use the single-axis Gauss meter, you will pick the right reading if the instrument/sensor is perpendicular to the magnetic field direction. It will take the wrong reading if you put it slightly bend or parallel. You have to turn around the Gauss meter gradually until you get the peak reading. This way can take time and has high possible error.
In comparison with the 3-axis sensor, no need to turn around. The three sensors will measure the strength. And then the microcontroller will calculate those data into ready-to-consume readout output. Therefore, most Gauss meters are digital. The display will show the reading in Tesla (International) or/and Gauss (imperial). And those are just the unit reading of magnetic field strength.
Top 10 Best Gauss Meter Reviews 2021
Looking for the best gauss meter on the market can be a little bit challenging. You can do it yourself. But why not take advantage of our top 10 gauss meter list below. Perhaps, one of them suits your needs.
1. Tenmars TM-192 3-Axis Gauss Meter [Best Overall]
So, Tenmars TM-192 is overall the best gauss meter that we find on the market. It measures with its 3-axis internal orthogonal sensors to ensure accuracy. That said, you don’t need to turn it left and right, up or down like the single-axis model does to take the measurement.
For measurement range, the range is 30 Hz to 2000 Hz. On the screen display, you will get the reading unit selectable either in MicroTesla (mT) or milli Gauss (mG).
There are some buttons to give instructions. Data hold (HOLD), maximum hold (MAX), and minimal hold (MIN) are available. These button are mainly used when performing measurements. You could also specify the range you want to focus on through the auto range or manual range mode button.
This affordable device comes with a data logging feature and internal memory. The memory is able to store 500 data sets of the logged data.
For power source, it only needs a single 9-V battery to operate. Make sure to operate the device with sufficient power. Using the device when it’s low power can lead to a misleading reading result.
- 3-axis sensor
- Data hold function
- Data log and internal memory
- The screen of this device becomes worn and scratched, not very durable.
2. Latnex Cornet ED-88TPlus
Latnex Cornet ED-88TPlus is actually an EMF meter. It’s able to measure RF radiation, electric field and surely magnetic field. Since it’s able to measure magnetic field strength, we include it here.
With a wide range of frequencies from 100 MHz to 8 GHz, the Cornet ED88TPlus is a reliable RF radiation detector. Besides, lower frequencies of electric fields ranging between 50 Hz to 50 kHz are also able to get recorded. As we are looking for a gauss meter, low-frequency magnetic fields varying from 50Hz to 10kHz can be measured with this device.
There are two different reading ranges you could select from. In order to get a greater resolution, surely you have to select the second range. It’s able to provide a resolution up to 0.1 mG.
- Range 1: For the magnetic field from 50H – 10kHz, the reading range is 1 mG to 600 mG.
- Range 1: The lower one, the magnetic field from 50 Hz to 1 kHz, the range is 0.1 mG to 10 mG.
When to Choose this One?
If you have to measure the magnetic field with several other tasks to measure like RF and other electromagnetic radiations, then this is a decent pick. However, this meter doesn’t provide a 3-axis mode. So, if accuracy is highly your priority, we don’t recommend this one.
Other benefits are the moving bar graphic and LED lights beside the screen. You could keep an eye on the moving graphic to monitor the radiation. The LED also gives you a quick alarm when the magnetic field radiation is out of a healthy level.
- Handheld compact design and lightweight
- Can be to connected to a PC via USB interface
- For 50 hours of data recording, it has a programmable time interval
- Automatic logging and recording of data
- Not very much sensitive towards EMF
- Only suitable for household use
3. Gain Express 3-Axis Gauss Meter
It is a 3-axis sensor Gauss meter. To evaluate a wide spectrum of ELF magnetic fields, regardless of the measuring angle, this system uses three internal orthogonal sensors. It is intended to provide a quick, accurate, and clear way for users to calculate the levels of magnetic field contamination across power lines, household products, and industrial machinery.
This device is a cost-effective, hand-held tool utilized and configured to calculate micro Tesla (μT) or milli Gauss (mG) monitoring units of magnetic field emission at varying band thicknesses from 30Hz to 2000Hz. In terms of the functional buttons, buttons such as Data Hold (HOLD), Maximum Hold (MAX), and Minimal Hold (MIN) are available.
For measurement, it supports both auto range and manual range selection mode. Moreover, it nicely has the data logging ability of 500 data sets with the provided memory size. It also has a calendar feature and real-time. A low-battery indicator is also given. Display overload (“OL”) is supported by the system. This system also includes an auto power-off feature.
The operating temperature for this device is 5˚C to 40˚C. And operating humidity should be less than 80%. The storage temperature for this Gauss meter is -10˚C to 60˚C, and storage humidity should be less than 70%. To operate this device, a 9-volt battery is required.
- It is a very cost-effective and portable device
- Very reliable and simple to use
- No information comes with it to give you a guideline about what is acceptable or unacceptable electromagnetic field levels
- It is not very much durable to its plastic body
4. Hengwei WT10A Tesla Meter Gauss Meter with Probe
Hengwei WT10A is a portable digital gauss meter, used to calculate permanent magnet material surface magnetic field, DC motors, monitors, magnetic splitter, magnetic field demagnetization permanent magnetic separator and magnetic field leakage, machining sections of the remaining magnetic field.
The device can be a portable, large calculation radius, simple to work, transparent LCD. A broad range, easy function, transparent liquid crystal display ( LCD) can be supported by the device. The ambient temperature for this device is 5 ° Celsius to 40 ° Celsius.
Relative Humidity for this Gauss meter is 20 percent to Relative Humidity for this Gauss meter is 20 percent to The power supply can be externally supplied with the aid of a USB connector.
- This is a portable device
- Providing a north/south function plus a metal probe
- It has a broad array of measurements and is easy to use
- No battery is included in the package
- The error increases as the magnetic field intensity increases
Things to Consider Buying A Gauss Meter
1. Be Aware of your Need
Why are you buying a Gauss meter is very necessary for determining which device you should purchase. Most people purchase a Gauss meter to check the level of the magnetic field in their environment, electronic appliances, or home. The people who live near electric transmission lines mostly keep a Gauss meter to continuously monitor the magnetic field level around their surroundings.
2. Single-Axis or 3-Axis Sensor?
Your gaussmeter can measure the magnetic field utilizing the internal part called the sensor. In gauss meter, there are two types of sensor: 1) single axis sensor and 2) three-axis sensor.
Simply, the single-axis sensor is a single Hall sensor calculating flux density in one dimension. The 3 axis sensor model is three Hall sensors positioned in 3 dimensions (x, y, and z) to calculate the flux intensity.
So, if you are purchasing a Gauss meter for very basic use then you could end up your decision on a single axis Gauss meter. But if you want to measure magnetic field density more precisely, easily, and faster, then a 3-axis Gauss meter should be your choice.
3. Measuring Range
Another most important parameter to check, while buying a Gauss meter is the measuring range of the meter. The Gauss meters are available in various measuring ranges in the market. If your requirement is just household, and you don’t need a huge measuring range then you should buy a low measuring range Gauss meter, because it would be cheaper than the large measuring range meters.
Also, check the resolution of the Gauss meter before buying. Likewise measuring range, the resolution of different meters is different. So, select that resolution which is suitable for you.
4. Sample Rate
The higher the sample rate, the better the Gauss meter to detect and measure the sudden peak magnetic field. The sensitivity over this sudden peak also determines how good is your instrument. If you learn about ADC (Analog to Digital Converter), you will know what sample rate is.