Online General-purpose Controller is independently developed by Vasthi Instruments. It is an industrial-grade standard design that is stable and reliable, easy to operate, and can support all digital analyzers. One channel of 4 20 mA output, photoelectric isolation, strong anti-interference ability, one channel of RS485 output, convenient for users to network, one channel of relay output with isolation, users can set the upper and lower limits to control the on and off state of the equipment.
FEATURES :
- Automatic identification, plug and play, support our all d igital analyser
- One way 4-20mA output, one way RS485 digital output
- With relay control, the user can set the upper and lower limits
- Industrial grade standard, output isolation, strong anti-interference ability
| Item | Parameters |
| Controller size | 144*144*115mm |
| Weight | 0.8kg |
| Operating temperature | 0~ 55 C, avoid direct sunlight |
| Precision | 4 AAA alkaline batteries |
| Storage temperature | -40 ~ 85 C |
| Temperature range | 0~ 50C |
| Display | 192*64 LCD |
| Sensor type | Supports digital analyser such as optical dissolved oxygen, Four electrode conductivity, Fiber turbidity, chlorophyll, blue-green algae, oil in water sensor and sludge concentration sensor, pH and ORP etc. |
| Air pressure compensation | Built-in instrument, automatic compensation 50~115KPa |
| Protection level | ABS housing, IP65 |
| Environment humidity | 80% |
| Power supply | 110~220VAC or 24VDC |
| Transmitting output | 1 channel isolated 4~20mA output, 1 channel digital output, 2 channel relay output |
| Temperature /pressure compensation | Automatic compensation |
| Installation method | Wall or panel mounting (opening size 138*138*) |
It is an industrial online controller used for real-time process control, monitoring, and automation of analyzers and sensors.
It provides process control, data acquisition, alarm management, display interface, and communication with analyzers in process and water quality systems.
It is ideal for industrial automation, wastewater treatment plants (ETP/STP), water treatment, process control systems, and environmental compliance monitoring.
Yes — it supports RS-485/Modbus, analog outputs (4-20 mA), digital inputs/outputs, and SCADA integration for remote monitoring.
Key features include real-time display, configurable alarms, multi-channel inputs, robust industrial design, and easy configuration for continuous automated control.
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