Función | Monitoreo en línea de resistencia de conexión a tierra de bucle, monitoreo en línea de resistencia de conexión de bucle de metal, monitoreo de estado de conexión a tierra; cable de puesta a tierra, control antirrobo de cable de metal |
fuente de alimentación | 6 V CC ~ 12 V CC, 50 mA máx. (Fuente de alimentación externa) |
Rango de resistencia | 0.01Ω~10Ω |
Resolución | 0.001Ω |
Exactitud | ±2 % de lectura ± 3 dígitos (20 ℃ ± 5 ℃, por debajo del 70 % de HR) |
Método de comunicación | RS485 (compatible con protocolo de comunicación MODBUS-RTU), comunicación GPRS opcional |
Tamaño de pantalla LCD | 47mm×28.5mm |
PCB size | 75mm×54mm×22mm |
sensor size | 245mm×115mm×56mm |
Sensor caliber | 130mm×20mm |
sensor quality | About 1762g; total mass: about 1950g (including accessories) |
PCB interface | J1: signal output, power input interface J2: Sensor and PCB connection port |
J1 logo | P+: power input positive P-: power input ground GND: signal ground, short circuit with power input ground (P-) R+: signal output positive R-: signal output negative |
J2 logo | I+, I- current coil interface U+, U- voltage coil interface GND: common ground |
cable | 1 piece, 0.5m long (5 cores) |
signal line | 1 piece, 1 meter long (5 cores) |
Connecting line identification | Red --- power input is positive; Black --- power input ground; (power input ground and shield ground can be short-circuited) Green --- RS485 signal is positive; Yellow-green --- RS485 signal negative; White --- shielding ground; |
Working temperature and humidity | -20℃~55℃;20%RH~90%RH |
overflow indication | When the displayed value is greater than 100Ω, the communication sends the "OLΩ" command |
shift gear | fully automatic shift |
Ground interference current | should be avoided |
external magnetic field | <40A/m |
external electric field | <1V/m |
single measurement time | about 0.5 seconds |
Working current | 50mA Max. |
Install | The ground wire passes through the center hole of the sensor |
installation requirements | The circuit board needs to be placed in another protective box |