Mdodel | HFMT-2A | HFMT-4A | HFMT-8A | HFMT-12A | HFMT-20A | HFMT-6A |
Measurement range | 0 - 300 mv | 0 - 400 mv | ||||
Detect depth | 0 - 200 m | 0 - 400 m | 0 - 800m | 0 - 1200 m | 0 - 2000 m | 0 - 1000m |
Measuring model(Intelligent frequency select ) | 40 hz | 80 hz | 80 hz | 80 hz | 80 hz | 30 channels(2000,1200,900,600,500,400,300,200,170, 120,100,80,67,57,43,39,35,31,28,25,21,18,15,12,10,8,7,6, 5,4 hz) |
Resolution | 0.5 mv | 0. 2 mv | 0.1 mv | 0.1mv | 0.1mv | 0.001mv |
Repetitive Erro | + 2% + 1 bit | + 1% + 1 bit | + 0.1% +1 bit | + 0.1% +0.5 bit | + 0.1% +0.5 bit | + 0.5% + 1% bit |
A/D Switch | 16 Bit 1 Msps | 24 Bit 1 Msps | 24 Bit 1 Msps | |||
Imput Impedance | > 10 ΜΩ | > 10 ΜΩ | > 10 ΜΩ | > 80 ΜΩ | > 80 ΜΩ | > 10 ΜΩ |
Power frequency suppression | > 80 db | > 80 db | > 80 db | > 80 db | > 80 db | >100 db |
Data storage | Phone storage space or cloud space 20 G | 100w | ||||
Display | Mobile phone or tablet PC (Touching LCD 5 - 10.1 ") | 7" touch screen | ||||
Connection model | Bluetooth 4.0 | Bluetooth 2.0 | ||||
Mainfram power supply | DC7.4V 3400 Mah Lithium battery | DC7.4V 6800 Mah Lithium battery | DC7.4V5200 Mah Lithium battery | |||
Mainfram power consumption | 260 mA | 330 mA | 360 mA | 360 mA | 450 mA | 450 mA |
Operation temperature | - 20 ºC - 60 ºC | - 20 ºC - 70 ºC | - 40 ºC - 70 ºC | |||
Mainframe size | 18.6 * 14.8*8 cm | 27*25*13 cm | ||||
Main frame weight | 0.8 kg | 0.9 kg | 2.8 kg |