Coliy Group
sales@coliy.com
Coliy Group
sales@coliy.com
● Measurement range up to 100kG(10T)
● Peak-to-Peak Noise <0.05G
● DC Accuracy 0.8%
● Frequency Response DC- 10kHz
● Bypass Zero Technology
● Gallium Nitride (GaN) Hall Sensor.
● AC magnetic field measurement (RMS)
● Max/Min/Hold Function
● S or N Polar indication
COLIY®--Excellent Solution for Magnetic Field Measurement | ||||||
High Magnetic Field (0-20T) Measurement | ||||||
Model | Principle | Type | Axis | DC Accuracy | Range | Resolution |
HALL | Handheld | 1 | 2% | 2T | 10μT | |
HALL | Handheld | 1 | 0.8% | 10T | 1μT | |
HALL | Handheld | 3 | 1%, 0.5% | 20T | 10μT | |
HALL | Desktop | 1 | 0.04% | 10T | 1μT | |
HALL | Sensor | 1 | 0.05% | 15T | TC of sensitivity: 30ppm/K | |
Low Magnetic Field(0- 2mT) Measurement | ||||||
Gaussmeters for Low Magnetic Field | ||||||
Model | Principle | Type | Axis | DC Accuracy | Range | Resolution |
Fluxgate | Handheld | 1 | 0.5% | 1mT | 0.1nT | |
Fluxgate | Handheld | 3 | 0.25% | 1mT | 0.1nT | |
Note: 1T= 10kG; 1mT= 10G; 1μT= 10mG; 1nT= 10μG | ||||||
G81 Gaussmeter (magnetic field meter) is a high-performance handheld single-axis gaussmeter using COLIY's third-generation semiconductor gallium nitride (GaN) Hall sensor. Gallium nitride sensor has the characteristics of good temperature stability, unaffected by light, high linearity, and low noise, and its performance is ahead of the second-generation semiconductor gallium arsenide (GaAs) sensor technology.
The Gaussmeter needs to be calibrated frequently during startup and measurement, which is inconvenient to operate and affects accuracy.G81 Gaussmeter adopts Bypass Zero Technology and high-stability GaN hall sensor, no need to zero, which greatly improves the accuracy of the data andthe convenience of use. G81 also has extremely low measurement noise that is unique in a handheld gaussmeter. The peak-to-peak noise within 60 seconds is less than 0.05G. It can easily measure the metal materials’ remanence and even measure the earth's magnetic field (see dcoument: Application G81 gaussmeter used in Geomagnetic Survey).
The DC accuracy of Gaussmeter G81 is better than 0.8%, the measurement range is up to 100kG (10T), and the frequency response range is DC-10kHz. Gaussmeter G81 uses Fourier analysis method to measure AC magnetic field (RMS value and spectrum analysis), which is very suitable for measuring AC magnetic field of various waveforms (sine wave, square wave, triangle wave, trapezoidal wave, sawtooth wave, etc.). The Gaussmeter G81 uses a 3.2-inch color industrial resistive touch screen and a menu and display that conform to the smart phone habit. It is easy to operate, and users can use it without reading the manual. The Gaussmeter G81 is powerful, with maximum/ minimum functions and magnetic field polarity display function, storage function,real-time spectrum analysis function and 0.2ms pulse magnetic field capture function.
G81 could be equipped with many different kinds of Hall Probes: Transverse Probe, Axial Probe, Small-diameter Axial Probe (Diameter2mm), Ultra-thin Probe (thickness of 0.5mm) and Probe with temperature compensation. The typical temperature coefficient of ordinary probes (probes without temperature compensation) is ±300ppm/℃, but typical temperature coefficient of probes with temperature compensation is only ±50ppm/℃, so probes with temperature compensation are strongly recommended for better precision and stability whenthe temperature changes.
Features | |
● Bypass Zero Technology ● GUI Operation System ● Gallium Nitride (GaN) Hall Sensor. ● 3.2 inches color touch LCD ● AC magnetic field measurement (RMS) ● Max/Min/Hold Function ● S or N Polar indication ● Real-time Spectrum Analysis Function ● Host storage capacity >6000 data | ● Measurement range up to 100kG(10T) ● Peak-to-Peak Noise <0.05G ● DC Accuracy 0.8% ● Frequency Response DC- 10kHz ● Temperature Coefficient up to ±50ppm/℃ ● Small-diameter Axial Probe (Diameter 2mm) ● Ultra-thin Probe (thickness of 0.5mm) ● 0.2ms Pulse Magnetic Field Capture Function ● AC magnetic field as low as 0.5Hz |
| Bypass Zero Technology
During the use of an ordinary gaussmeter, the host and probe will has zero drift due to changes in temperature and hysteresis. Therefore, the probe must be frequently placed in the zero-gauss chamber for zero calibration. The Gaussmeter G81 adopts unique Bypass Zero Technologyand high stability GaN Hall sensor. Both the host and probe have low zero drift error and extremely low noise. Temperature and hysteresis do not affect the zero drift of the gaussmeter. There is no need for zero calibration, which greatly improves the accuracy and convenience of use. |
GaN Hall Sensor GaN materials have the characteristics of strong atomic bonds, high thermal conductivity, good chemical stability and strong radiation resistance. GaN is known as the third-generation semiconductor materials, after the first generation of Ge, Si semiconductor materials and the second generation of GaAs, InP semiconductor materials. COLIY's third-generation semiconductor gallium nitride (GaN) Hall sensor has the characteristics of good temperature stability, high linearity and low noise, and its performance is ahead of the second-generation semiconductor gallium arsenide (GaAs) sensor technology. |
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| Smart Record and Review
Smart Record: Users can choose any time period and time interval, and can add remarks for each record. The host storage capacity is greater than 6000 data. Smart View: Provides a detailed record list, and users can view the details of each measurement data. Click any record list, the user can see the complete storage information, the display format of this information is similar to the screenshot display. |
Real-time Spectrum Analysis
For AC magnetic field, G81 Gaussmeter has real-time spectrum analysis function, and the spectrum analysis range is <10kHz.
Using Fourier analysis of 20Hz-10kHz AC magnetic field, the screen will display the 2 largest magnetic field peaks and frequency values. |
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Pulse Mode
The digital sampling frequency of the G81P Gaussmeter is as high as 100k/s, so it can capture the pulsed magnetic field with a time width of ≥0.2ms, and the maximum pulsed magnetic field value is up to 10T. This is ideal for measuring magnetizers and other fast pulsed magnetic field applications. |
Temperature Compensation
The typical temperature coefficient of ordinary probes (probes without temperature compensation) is ±300ppm/℃, but typical temperature coefficient of probes with temperature compensation is only ±50ppm/℃, so probes with temperature compensation are strongly recommended for better precision and stability when the temperature changes. |
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| 3D Movement Platform
3-Direction Precision Movement Platform, is made of non-magnetic material. Users fixed the probe on the bracket front-end, and then manually rotate the knob so that the probe moves stably along the X, Y, Z-axis to a certain position and lock fixed. Maximum stroke of each axis is 150mm, and positioning accuracy is 0.1mm. |
Metal Protector of Probe
All probes of COLIY gaussmeter are protected by non-magnetic metal protectors (protective sleeves). The non-magnetic metal protector can be tightened with the probe grip to protect the probe from strong impacts, squeezing, etc. It can prevent the probe from falling damage from a height of 10 meters, and even resist hammer strikes. It is recommended that users tighten and fix the non-magnetic metal sleeve after completing the magnetic field measurement to protect the probe from damage to the greatest extent. |
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Model | G81 / G81P |
Measurement Specification | |
Accuracy(DC) | < ±0.8% (EACH PROBE CALIBRATED TO 2.5T) |
Range | 100kG (10T) |
Frequency Response [fT] | DC - 10kHz |
DC Magnetic Field Noise | 0.05G (5uT) [peak-to-peak value within 60s] |
AC Measurement Mode | AC frequency response range 0.5Hz-10kHz RMS value, suitable for measuring AC magnetic field of various waveforms (sine wave, square wave, triangle wave, trapezoidal wave, sawtooth wave, etc.) |
Spectrum Analysis | Using Fourier analysis of 20Hz-10kHz AC magnetic field, the screen will display the 2 largest magnetic field peaks and frequency values. |
Display Digits | 4 |
Host Storage Capacity | > 6000 data |
Zero Drift | Using Bypass Zero Technology, there is no zero drift, and temperature and hysteresis have no effect on the zero drift of the magnetic field. |
Typical Temperature Coefficient of Probe | ±300ppm/℃ (Probes without temperature compensation) <±50ppm/℃ (Probes with temperature compensation) |
Pulse Magnetic Field Capture Function | G81P Gaussmeter adds pulse magnetic field capture function: can capture pulsed magnetic field with pulse width ≥ 0.2ms. |
Front Panel | |
Screen | 3.2 inches color resistive touch LCD, 320x240 Pixel |
Units | Gauss(G), Tesla(T) |
Display Update Rate | 4 readings/second |
Display Mode | DC, AC, MAX., MIN, Alarm, N/S Polarity Indication, Spectrum Analysis, and Pulse Mode, etc. |
Probe | |
Hall Sensor | COLIY's third-generation semiconductor GaN Hall sensor |
Probes | See “Probe Specifications” for details. |
Connector | 6-core waterproof connector |
Probe Grip and Protector | Non-magnetic aviation aluminum alloy, resistant to 10m drop |
Probe Cable | 6 shielded twisted pair core flexible cable; Standard CAT5e |
Probe Cable Length | Standard 1.5m; Customizable longest length of 30 m |
USB Interface | |
Function | 1, Communication Interface: to connect PC with gaussmeter host for monitoring the measurement; 2, Charging interface: Used to connect a 5VDC charger or mobile power supply |
Software/ Driver | With host computer software / Support LabVIEW™ |
Analog Output | |
Linearity (DC) | ±0.8% |
Function | Real-time output, the output voltage is proportional to the magnetic flux density |
Full-scale Voltage | ±5 V |
Scaling (Proportion) | typ. 1T/V (Could be customized, such as 2T/V, 0.1T/V, etc.) |
Frequency Response | See “Probe Specifications” for frequency response |
Output Resistance | < 100 Ω (short circuit protected) |
Connection | Dedicated analog output BNC conversion cable |
Host Specification | |
Operating Temperature | -20°C to +60°C |
Warm-up time | Can be used immediately after the device is turned on 30 min to meet the best performance |
Host Temperature Coefficient | <±20ppm/℃; Negligible impact on accuracy within the operating temperature range |
Storage Temperature | - 20°C to +80°C |
Ambient Magnetic Field | <1kG(0.1T) |
Battery | Rechargeable 5200mAH Li-ion |
Operating Battery Life | >16 hours (Test in standard test environment, working time will be reduced in low temperature environment) |
Power Supply | 5VDC; could be charged by a mobile power supply |
Dimension | 238 mm W × 95 mm H × 42 mm D |
Weight | 350g |
Model G81 / G81P Gaussmeter Probes | ||||||
Probe Model | Range | Frequency Response | Stem dimension (mm) | Operating Temperature (°C) | DC Accuracy (25°C) | Stem Surface Material |
Transverse T08M150G81 T08M150G81T | 100kG (10T) | DC-10kHz | 80*2.2*1 | -20 - +75 | ±0.8% | Metal |
Transverse T08P150G81 T08P150G81T | 100kG (10T) | DC-10kHz | 80*2.5*1.3 | -20 - +75 | ±0.8% | Plastic |
Axial
A08M150G81 A08M150G81T | 100kG (10T) | DC-4kHz | 80*Φ6 | -20 - +75 | ±0.8% | Metal |
Small-diameter A08S150G81 A08S150G81T | 100kG (10T) | DC-2kHz |
80*Φ2
| -20 - +75 | ±0.8% | Metal |
0.5mm Ultra-thin T06U150G81 T06U150G81T | 100kG (10T) | DC-2kHz | 80*2*0.5 | -20 - +75 | ±0.8% | Plastic |
Note:
1. The most cost-effective package(high precision, low temperature drift) : G81+ Probe T08M150G81T
2. Option “T”: Probe with temperaturecompensation, and its typical temperature coefficient is <±50ppm/℃;
3. Each probe’s fully calibrated measurementrange: ±2.5T; The accuracy of the range 2.5T-10T is determined by the linearityof the Hall sensor. It is hoped that the accuracy parameters can be reached,but it cannot be guaranteed.
4. Probes with special requirementscan be customized.
5. Transverse Probe’s sensor centerposition:
Copper Probe: D=1mm±0.2mm Plastic Probe: D=1.2mm±0.2mm | 
|
Model | Descriptions |
CAB30 | BNC adapting cable for analog output (Only for G81 Gaussmeter) |
SAMRT PC Software | PC SOFTWARE for Gaussmeter |
GHOLD100 | 3-Direction Precision Movement Platform, made of non-magnetic material. Users fixed the probe on the bracket front-end, and then manually rotate the knob so that the probe moves stably along the X, Y, Z-axis to a certain position and lock fixed. Maximum stroke of each axis is 150mm, positioning accuracy of 0.1mm; center load: 10kg; weight: 3.5kg |
The most popular Package |
Package Product No. G8101T: Gaussmeter G81 + Probe T08M150G81T |
Host Type | Description |
G81 | Universal single-axis gaussmeter host |
G81P | Universal single-axis gaussmeter host, adds pulse magnetic field capture function: can capture pulsed magnetic field with pulse width ≥ 0.2ms |
T | 08 | M | 150 | G81 | T |
PROBE TYPE
A - AXIAL T - TRANSVERSE
| STEM LENGTH
06 - 6 cm 08 - 8 cm 10 - 10 cm 20 - 20 cm
… | PROBE STYLE
M – METAL P – PLASTIC U – ULTRATHIN S – SMALL DIAMETER | CABLE LENGTH
150 – 150 cm … | GAUSSMETER MODEL
G80 – G80 probe G81 – G81 probe
| TEMPERATURE COMPENSATED
T - YES BLANK - NO |
Video：Bypass zero technology 1
Video：Bypass zero technology 2
Video：High resolution
COLIY G81 Universal Single-Axis Gaussmeter
COLIY G80&G81 GAUSSMETER EMC TEST REPORT
COLIY G80&G81 GAUSSMETER CE CERTIFICATE OF CONFORMITY
Overview:
Normally, users use magnetic measurement equipments basedon the principle of fluxgate or magnetoresistance to measure the earth'smagnetic field, such as fluxgate magnetometer, magnetoresistance gaussmeter orcompass, etc.
GaN materials have the characteristics of strong atomicbonds, high thermal conductivity, good chemical stability and strong radiation resistance. COLIY's third-generation semiconductor gallium nitride (GaN) Hall sensor has the characteristics of good temperature stability, high linearityand low noise, and its performance is ahead of the second-generation semiconductor gallium arsenide (GaAs) sensor technology.
G81 with GaNhall sensor used in low field measurement
During the use of an ordinary gaussmeter, the host andprobe will offset the zero point due to changes in temperature and hysteresis.Therefore, the probe must be frequently placed in the zero-gauss chamber forzero calibration.
The Gaussmeter G81 adopts unique Bypass Zero Technology andhigh stability GaN Hall sensor. Both the host and probe have excellent zero point stability and extremely low noise. The peak-to-peak noise within 60 seconds is less than 0.05G. Temperature and hysteresis do not affect the zero point of the Gaussmeter. There is no need for zero calibration, which greatly improves the accuracy and convenience of use.
Therefore, in addition to measuring strong magnetic fields,Gaussmeter G81 with GaN hall sensor could also be used to measure low field,such as the metal materials’ remanence, earth’s magnetic field, etc.
The following is a simulation test using G81 gaussmeter with Probe (GaN hall sensor) to measure the earth’s magnetic field. The probeis fixed on the plate, and then rotates around the central axis of the plate (counterclockwise). A reading is recorded every 10 degrees, and 36 sets of datacan be obtained. Then these data form a corresponding graph, as can be seen inthe figure, the curve is approximately sine.
The table below is the simulation test data:
Angle (°) | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 |
B (G) | -0.03 | -0.10 | -0.16 | -0.21 | -0.25 | -0.28 | -0.31 | -0.32 | -0.33 |
Angle (°) | 90 | 100 | 110 | 120 | 130 | 140 | 150 | 160 | 170 |
B (G) | -0.33 | -0.32 | -0.30 | -0.28 | -0.26 | -0.23 | -0.20 | -0.16 | -0.10 |
Angle (°) | 180 | 190 | 200 | 210 | 220 | 230 | 240 | 250 | 260 |
B (G) | -0.04 | 0.03 | 0.09 | 0.15 | 0.20 | 0.24 | 0.28 | 0.30 | 0.32 |
Angle (°) | 270 | 280 | 290 | 300 | 310 | 320 | 330 | 340 | 350 |
B (G) | 0.32 | 0.31 | 0.29 | 0.27 | 0.23 | 0.20 | 0.15 | 0.08 | 0.03 |
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