Fertigation Process Control System with Panel Mount and 8 Sectors, 115V Input Voltage, 50Hz/60Hz

The fertigation controller provides up to 10 programs to irrigate up to 8 sectors using time or volume irrigation control. Each irrigation program has one pH and one EC setpoint. The start condition of the program, the irrigation sectors and the time or volume for each sector are user defined. The irrigation water is pH corrected based on the pH control, with acid or alkaline solution and can contain nutrients for crops based on up to 4 fertilizer receipts. Correction of time or volume of irrigated water can be based on accumulated solar radiation or can be manually requested by user. Agitator control and filter cleaning control are performed automatically. The instrument reads up to 3 EC probes, one to verify the incoming water EC, and the other two are in-line redundant for safety to measure the current irrigation water EC. The two pH electrodes are mounted in-line redundant for safety to read the irrigation water pH. Irrigation control: time/volume control, 10 programs/5 priority levels with up to 99 repetition. Irrigation start condition: by time, by solar radiation, by 5 external tank low level. Fertilization control: by EC. Fertilizers: up to 4 valves. PH control/correction: acid or alkaline. Agitators control: yes. Filter control/cleaning: 2 differential presostate/2 filter cleaning relays. Fertilizer tank levels/counters control: level. Irrigation counter: yes. Acid/alkaline tank level/counter control: level. EC Inputs: up to 3, 0.0 to 10 microseconds cm. pH Inputs: up to 2, 0.0 to 14.0 pH. Temperature compensation: EC, pH. Solar radiation input: 1; 0 to 2000 W/m2. Irrigated sectors: up to 32. PC connectivity: RS232. Alarms: yes, user selectable levels. Logging: yes, three levels. Power supply: 115V +/-10 percent 50Hz/60Hz. Dimensions (panel mounted): 7-3/32″ length by 10-25/54 width by 4-19/32″ height.