| Name |
Easy Treatment Fertilizer Controller 4 (EC: 5-pole pH: glass-electrode controller) |
| Model |
RK4TW-300-100V |
RK4TW-300-200V |
RT4WK-1000-100V |
RK4TW-1000-200V |
| Instrumentation Department |
Model |
PCE-12H |
| Measuring range |
EC: 0-10.0 mS/cm (factory-shipped): 0-20.0 mS/ cmpH: 0-14.00 pH: 0-50℃ |
| Display |
LCD with back light |
| Accuracy |
EC: ±4% F·S ±1 digit pH: 0.03±1 digit Temperature: ±1℃ |
| Setting |
Control point could be set by touch switch |
| Serial communication |
Communication standard RS485 speed up to 38400bps |
| Transmission output |
EC, pH, temperature DC 4-20mA (I/O insulation + insulation between outputs) Maximum connection load resistance 500Ω |
| Temperature compensating |
EC: Temperature Compensation Range 0-50℃ pH: Temperature Compensation Range 0-50℃ |
| Function |
ON/OFF timer function |
| Control range setting function (range EC: 0 to 1.00mS per cm pH0 to 1.00pH) |
| EC/pH Automatic Calibration |
| Control to prevent overinjection (fertilizer and down/up agent) |
| External signal interlock function (100-240V with voltage, no-voltage contact) |
| Ambient temperature |
0～45℃ |
| Power supply |
Rated voltage AC100 ~240V Single phase voltage 50/60Hz (Free power supply) |