Purpose
Delavan’s Cap Analog 4100 is a cost effective “Two- Wire” R.F. CapacitanceTransmitter used in powder bulk solids, liquids and slurry applications.
True “two-wire” operation
The Cap Analog 4100 is a superior twowire transmit-ter. Maintenance and installation expense are eliminat- ed due to not needing line power; the same two wires which power the 4100 also transmit its output signal.
Principle of operation
The Cap Analog 4100 system consists of an electronic amplifier mounted in a cast aluminum explosion proof housing. This housing normally is integrally mounted on the top of the probe. The unit is powered by a remote 24 DC power supply, supplied by Delavan or the user.
The Cap Analog 4100, along with its probe sensor, operates as a capacitance system that converts changes in level to changes in output signal. After calibration, any change in level is recognized and con- verted to an analog output 4-20mA signal. The system will operate any loop powered 4-20mA DC indicator.
The Cap Analog 4100 is supplied with two 20 turn, ZERO and SPAN adjust potentiometers. A switch and memory calibration potentiometer is provided. DIP switches are provided to extend the range of zero reverse output so that output is 20-4 instead of 4-20mA DC.
Features
- True “two-wire” 24 Volts DC operation
- Built-in immunity to process build-up/coatings
- Switch selectable reversible output 4-20mAor 20-4mA
- Completely adiustable
- One time “zero-cal” function test
- 1 mile twisted pair separation
- Easy access NEMA 7,9 enclosure
- Economical and cost effective
- Self-contained integral electronics
- Sensing probe lengths to 250 ft.