Herrett High Temperature Resistant RF Admittance Level Gauge AMG-RF795A-D1

Herrett High Temperature Resistant RF Admittance Level Gauge AMG-RF795A-D1Working Principle:
AMG-RF795A/AMG-RF795B is based on the admittance principle, consisting of two plates of a capacitor formed by a probe inside the container and the container wall. The dielectric material of the capacitor is composed of the air between the probe and the container wall, as well as the insulation layer of the probe itself. When the material inside the container rises and comes into contact with the probe, some of the air in the dielectric material of the capacitor is replaced by the material. Because various materials (dielectric constant>1) have different dielectric constants from air (dielectric constant=1), the capacitance and total impedance of the capacitor also change accordingly. After this change is measured by the circuit, it is compared with the reference value set by the potentiometer through an amplifier and converted into a relay signal output.
The correct setting of the reference value will directly affect the correct state of the relay output signal.
Based on radio frequency technology, the measurement circuit applies a radio frequency simultaneously to the measuring end of the probe and the protective cover. Since the current cannot flow at the same potential, the energized protective cover blocks the current from the measuring end of the probe through the accumulated material on the protective cover to the container wall.
This measures the material between the probe measuring end and the container wall, eliminating the accumulation of material on the probe, thus achieving the effect of anti adhesion measurement.
Herrett High Temperature Resistant RF Admittance Level Gauge AMG-RF795A-D1Product Description: How to Translate
The AMG-RF795A/AMG-RF795B RF admittance meter utilizes the German HERRETT anti adhesion circuit design, which can detect the true level while eliminating the influence of false level signals attached and suspended around the probe. We also independently adopt good patch design and production technology to make electronic circuit technical parameters more stable, reliable, and have a longer service life.

AMG-RF795A/AMG-RF795B RF admittance level gauge features:
Strong universality: applicable to various occasions, including fly ash, particles, powders, liquids, viscous, conductive and non-conductive materials.
Anti adhesive circuit: The use of anti adhesive electronic circuits can eliminate false signals caused by material adhesion.
Detachable probe: The probe and controller can be separated without cable connection, and installation and removal do not affect the feeding and discharging of materials
Probe resistant to high and low temperatures: The probe is suitable for working environments ranging from -184 ℃ to 260 ℃, and ceramic high-temperature probes are also available
Large output capacity: It adopts a relay contact output with a capacity of 2.5A/230VAC, and has a status light to display the working status and a 0-30 second delay function.
SMT technology: makes electronic circuits more resistant to vibration, with more stable and reliable circuit parameters.
Wave pressure technology: increases the usage pressure of the probe.
Warranty period: The warranty period is ten years.
Herrett RF admittance level gauge AMG-RF795Technical parameters ● Probe parameters
Relay capacity: DPDT, rated 2.5A/230VAC or 5A/26VDC Installation thread: 1 "NPT
Delay: 0-30 seconds, continuously adjustable. Probe material: stainless steel Teflon
Power supply: 220Vac or 24Vdc Liquid medium: Stainless steel
Power: 3W Electrical interface: PG11 or 3/4'NPT, explosion-proof is 1'NPT
Sensitivity: 0.3pF~800pF Working pressure and temperature relationship:70kg/ cm2@-184 ℃
Material temperature: -184 ℃ to 260 ℃ (high-temperature ceramic probes can be used for temperatures above 260 ℃)70kg/ cm2@38 ℃
Environmental latitude: -40 ℃ to 66 ℃31.5kg/ cm2@149 ℃
Power loss protection: high and low modes, normally open and normally closed, adjustable on site24.7kg/ cm2@205 ℃
Shell: IP65, heavy-duty cast aluminum shell0kg/ cm2@260 ℃
Explosion proof standard: ExdiaIICT4