Purpose
Terry Ferraris’s Captrol 500 is a cost effective Microcontroller Based R.F. Capacitance On/Off Switch used in powder bulk solid and liquid applications.
“One-touch” button calibration
With the utilization oi our Microcontroller and Terry Ferraris’s unique Auto-Cal algorithm, calibration is accomplished with a momentary touch of a button. No special tools, complicated procedures or valuable time is needed.
Principle of operation
The Captrol 500 Microcontroller Based Point Level Switch consists of solid state electronics mounted in a cast aluminum explosion proof enclosure. The rugged sensing element utilizes a driven guard designed to eliminate the effects of material buildup or coatings that may cause false signals. The sensing element’s “active” section is energized with a R.F. (Radio Frequency) signal approximately 2MHz. When the process level changes, a change in capacitance occurs resulting in a change in frequency. This change in frequency is compared to a preset value and after amplification the signal is used to actuate a relay.
Features
- Integral or remote mount electronics
- On-board microcontroller
- One-touch button calibration
- Built-in “self diagnostics”
- Built-in driven shield/guard
Designed to eliminate false signals caused by material build-up or coatings - Universal power supply 115, 230 Volts AC or 24 Volts DC
- tatus Indication LED’s
- Adjustable sensitivity
- Adjustable time delay
- Field selectable Fail-Safe modes
- Built-in static suppression
- Explosion proof design
- 3/4” stainless steel NPT and flange mounting