ຮັບສ່ວນຫຼຸດພິເສດຕາມປະລິມານ, ອັບເດດລາຄາຂາຍສົ່ງ ແລະ ການແຈ້ງເຕືອນສິນຄ້າໃໝ່ສົ່ງກົງເຖິງອິນບັອກຂອງທ່ານ.
ໂດຍການສະໝັກສະມາຊິກ, ທ່ານຍອມຮັບ ເງື່ອນໄຂການໃຫ້ບໍລິການ ແລະ ນະໂຍບາຍຄວາມເປັນສ່ວນຕົວ ຂອງພວກເຮົາ.
ເຂົ້າເຖິງຜູ້ຊ່ຽວຊານທີ່ໄດ້ຮັບການຢັ້ງຢືນຂອງພວກເຮົາໂດຍກົງ
Function: Grounding resistance,loop resistance,conduction resistance and equipotential
connection resistance test soil resistivty and AC voltage test
Power: DC 9VZi-Mn dry battery R14S 1.5V 6 PCS,continuous standby for 300 hours )
Back linht: Controllable white screen backlight,suitable for use in darkfield
Testing method: precision 4 wre 3wre testing,simple 2 wire test groundng resistance
Measure method: Earth Resistance:rated current change-pole method,measurement current 20mA Max
Soil Resistivity.4-pole measurement (Wenner method)
Earth Voltage:average rectification(between P(S)-ES)
Range: 234 wire method for measuring ground resistance (R):0.000Q~30000Ω
Soil resistivity (p):0.00Qm~9000kQm
Grounding voltage:AC 0.0~100.0V
Max.resolution: 234 wire method for measuring ground resistance (R):0.0010
Soil resistivity (p):0.012m
Grounding voltage:0.1V
Accuracy: 234 wire method for measuring ground resistance (R):
±2%rd±5dgt(0.000Ω~29.999Ω)
±2%rdgt3dgt(30.00Ω~2999.9Ω)
±4%rdg±3dgt(30000~30000Ω)
Soil resistivity (p):depends on R accuracy (p=2πaR a.1m~100m;π=3.14)
Grounding voltage:±2%rdg=3dgt
note:
1.when rC max or rP max addtional tolerance st5%rdge5dgt .(rCmax4kΩ+100R<50kΩ,rP max4kN+100R<50k2)
2.Additional tolerance when 5V interferes voltage st5%rdg=5dgt.
