The Kotron® Model 805 Smart Transmitter is a loop-powered, 24 VDC, liquid-level transmitter based on proven RF Capacitance technology. Encompassing a number of significant engineering accomplishments, this high performance RF level transmitter is designed to provide reliable measurement performance well beyond that of competitive units.
The KOTRON Model 805 operates on a remarkably low amount of current. A microprocessor controls the measurement engine, drives the liquid crystal display, enables keypad operation, controls HART® communications and provides a 4–20 mA output.
A separate wiring compartment isolates the power/signal conductors from the electronics compartment via a sealed feed-through. The compartment is designed to maximize ease of wiring and includes surge and transient protection.
The unique enclosure is conveniently angled at 45° to facilitate ease of setup and configuration, and to maximize readability of the liquid crystal display.
RF Capacitance Technology
The liquid acts as an isolator between two conductors (probe and tank wall). When level rises, there is more gain of capacity into an analog or digital signal. Features
Accepted, proven RF capacitance technology
Two-wire, 24 VDC, loop-powered level transmitter
Innovative, ergonomic housing
Two-line, 8-character LCD with keypad
Probe designs to +1000° F (+535° C) / 5000 psig (345 bar)
Intrinsically safe and Non-Incendive approvals
Probes available from 6 inches to 150 feet (15 centimeters to 45 meters)
Options
HART digital communications
Display and keypad
FM, CSA, or ATEX approvals
Aluminum or stainless steel enclosure
Probe selection
Probes
Kotron® RF Capacitance probes are available in many different configurations to handle a wide variety of application conditions. Generally insulated probes are used in conductive fluids (dielectric >10) and bare probes are used in non-conductive fluids (dielectric <10). Operating principle
The KOTRON 805 combines the proven technology of RF Capacitance with advanced signal processing techniques and convenient user features. As level rises and falls in a tank or vessel, the amount of capacitance developed between the sensing probe and the tank wall (or ground) also rises and falls. This change in capacitance is digitized for display and HART® communications (optional) and converted into a proportional 4-20 mA analog output signal. Approvals
ATEX
Ex ia
CSA
XP, IS, NI
FM
IS, NI
Other approvals are available. Consult factory for more details.
