GSM-19T proton magnetometer and gradiometer series 

 Canadian GEM GSM-19T standard proton magnetometer sales and service centers authorized to Sennheiser Technology Development Co., Ltd. established in China and the Asia-Pacific region. Responsible for the entire Chinese market, sales of standard GSM-19T proton magnetometer and technical services. Instrument installation, software debugging, training, instrument calibration, hardware repair and maintenance and service for Chinese customers in the region. The full sales service management system so that you do not have to worry about. 

 Proton magnetometer has been a long time is to use common, inexpensive magnetometer, its uses include metal exploration of mineral resources, mineral resources exploration, environmental and engineering exploration and monitoring magnetic field changes. 
 1 How it works 
 Magnetometers use proton hydrogen-rich liquid to produce the precession signal. It uses liquid can provide a very high hydrogen density, and there is no danger in the operation. 
 Polarized DC current through the winding in the coil of the probe of hydrogen-rich proton liquid, will produce a secondary magnetic flux density of 100 Gauss (Gauss). The proton polarization to the strong net magnetization to reach thermal equilibrium with a strong magnetic flux density. 
 When the termination of the secondary magnetic flux, to be "polarized" protons that occur to spin and then rearrangement to restore the normal flux density state. According to the following formula, the proton precession frequency f0 of the magnetic flux density B (Tesla units for-Teslas, T) is directly related to: 
 f0 = (γp/2π) Bγp/2π = 42.5763751MHz / T 
 Proton precession measurements must be in sequence, that is, first an initial polarization, followed by the frequency measurement, and then the cycle repeats. This differs from the precession measurement of the continuous measurement in the polarization of hydrogen nuclei at the same time. 
 Two. The main advantage of the standard magnetometer GSM-19T 
 GSM-19T uses a large number of new technologies, and thus different from other magnetometer, for example: 
 ● It integrates high-precision GPS (optional). 
 ● display real-time observation of the magnetic field image on the host screen. 
 Observational data through the RS232 interface, fast download, download speeds up to 115 Kbaud. 
 ● Resolution of up to 0.01nT the sensitivity 0.1nT. 
 ● field readings of the standard memory of 32MB, can store 1,465,623 or 5,373,951 bps sets of readings according to user requirements, the amount of memory can be the 4MB incremental expansion. 
 ● has a unique basis points can be programmed station, the observed functional 
 Field magnetometer basis points station, for example: connection to automatically correct the date change; the flexibility to set a series of observation schedule and the sampling rate; when you leave basis points in Taiwan for a long time, this feature is particularly important. 
 ● Walking Mag acquisition mode using the GSM-19T, to ensure that the operator in the field along as he went to collect magnetic field data, in order to obtain a continuous observation profile. 
 ● Another innovation of GSM-19T, in the office, the user can design a good observation route and point of input to the GPS (optional), and then be observed by GPS command of the operator in the field according to the design. 
 ● basis points sets of observations and field mobile observation with high-precision time synchronization, for observations in the region of magnetic interference and to ensure high-precision results are very important. 
 Observation quality monitoring capabilities in the measurement process if the hair concept of an observed value of poor quality, the operator will hear a warning signal. 
 3. Technical specifications and configuration 
 Technical indicators: 
 ● Sensitivity: 0.05nT 
 ● Resolution: 0.01nT 
 ● Absolute Accuracy: ± 0.2nT 
 ● Dynamic range: 20000 to 120000nT 
 ● Gradient Tolerance:> 7000nT / m 
 ● Sampling rate: 3-60 seconds selectable 
 ● temperature drift: 
 0.0025nT / ° C (ambient temperature of 0 to -40 ° C); 
 0.0018nT / ° C (ambient temperature 0 to +55 ° C) 
 ● Operating temperature: -40 ℃ - +55 ℃ 
 ● storage 32M bytes 
 Station can be kept to 1,465,623 readings 
 Basis points station can be saved to 5,373,951 readings 
 Gradient measurements can be saved to 1,240,142 readings 
 Walk magnetic survey can be saved to 2,686,975 readings 
 ● Size and Weight: 
 Host 223 × 69 × 240mm, weight 2.1Kg 
 Sensor 170mm (length) x 75mm (diameter) 
 Weight 2.2Kg 
 ● operating modes: 
 Station: 60 seconds every three seconds, automatic sample storage time observations as well as time and date 
 Basis points stand: observations, time, date, every 3-60 seconds to read, the data stored in 
 Remote Control: Optional RS232 interface for remote measurement 
 ● Input and output: 
 RS232 interface digital output or 6-pin waterproof plug (option) for analog output 
 Standard configuration 
 GSM-19T host GEMLinkw software, internal rechargeable battery, charger, probe and cable and probe pole, RS232 cable, transport case, a Chinese-language operating manuals. 
 China - Beijing land Sennheiser Technology Co., Ltd.