Radar Type (Time Domain Reflectometry) VF Series

►Features
The radar type level meter irradiates microwaves via the probe and makes stable detection without being affected by dust particles, vapors, and obstacles in the tank.
Can be used for powders, granules, liquids, slurries, etc. Makes stable detection without being affected by the moisture content, particle diameter, and electrical properties of the measured substance. As microwaves are irradiated via the probe (wire or rod), the meter is not easily affected by vapors (for liquids) and dust particles (for granules). Adjustment after installation is not needed.

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►Operating Principles

When an electromagnetic pulse is applied on the sensor probe, the pulse proceeds at high speed toward the measurement surface via the wire, and a part of the pulse is reflected on the measurement surface and returned to the sensor. The distance to the measured substance is calculated from this propagation time.

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►Standard Specification

Power Supply (Two Wire)	Non Explosion-proof	DC24V(18～35V)
Power Supply (Two Wire)	EExia	DC24V(18～28V)
Max Measuring Range	Single Rod	3m
Max Measuring Range	Single Cable	24m
Output	Output （Max Load Resistance750Ω）	DC4～20mA　HART （Max Load Resistance750Ω）
Output	Error Output	DC22mA
Accuracy	Liquids	±15mm
	Powders	±20mm
	Repeatability	1mm
Conditions	Ambient Temperature	-30～+55℃（EExia：-20～+48℃）
	Flange Temperature	-30～90℃　option 200℃ （EExia：-20～+48℃）
	Process Temperature	-50～+600℃
	Withstanding Pressure	Max.0.4MPa
	Enclosure Rating	IP-66
	Minimum Dielectric	Over 2.3