RF admittance level switch

NegotiableUpdate on 04/21

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

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Overview

1 Overview: The HR-SPDN-KG series RF admittance level switch adopts advanced RF admittance technology to overcome the defect of capacitive level switches that cannot eliminate the influence of conductive materials. The instrument operates reliably, with all technical indicators reaching the international level of similar products. It is widely applicable for alarm and control of liquids, slurries, dust, material levels, and the interface between two liquids. In addition, the product has added on-site working status indication, which is a highly cost-effective and stable level switch. 2 The working principle of the level switch is composed of a sensor unit and an electronic unit. The sensor unit mainly includes three parts: measuring probe, shielding electrode, and grounding terminal. The height of the material is reflected by the change in admittance between the probe and the container wall. When the material reaches the switch working point, the electronic unit reacts, drives the relay to act, and outputs the switch signal. Shielding electrodes can prevent misoperation signals caused by hanging materials on the electrodes, and only output switch control signals when the materials truly reach the set point. 3 Dimensions Power Supply: 220VAC, 50/60Hz/24VDC, 100mA ■ IV Technical parameters Sensitivity: 0.3pF or less Operating temperature: -20~180 ℃ Environmental temperature: -40~80 ℃ Operating pressure: -0.1~2.5MPa Output: DPDT relay (double pole double throw) Contact capacity: 220VAC, 5A no inductance .....

Product Details

1 Overview

The HR-SPDN-KG series RF admittance level switch adopts advanced RF admittance technology to overcome the defect of capacitive level switches that cannot eliminate the influence of conductive hanging materials. The instrument operates reliably, with all technical indicators reaching the international level of similar products. It is widely applicable for alarm and control of liquids, slurries, dust, material levels, and the interface between two liquids. In addition, the product has added on-site working status indication, which is a highly cost-effective and stable level switch.

2 working principle

The level switch consists of a sensor unit and an electronic unit. The sensor unit mainly includes three parts: measuring probe, shielding electrode, and grounding terminal. The height of the material is reflected by the change in admittance between the probe and the container wall. When the material reaches the switch working point, the electronic unit reacts, drives the relay to act, and outputs the switch signal. Shielding electrodes can prevent misoperation signals caused by hanging materials on the electrodes, and only output switch control signals when the materials truly reach the set point.

3 Overall dimensions

Power supply: 220VAC, 50/60Hz/24VDC, 100mA

4 Technical parameters

Sensitivity: 0.3pF or less

Working temperature: -20~180 ℃

Environmental temperature: -40~80 ℃

Work pressure: -0.1~2.5MPa

Output: DPDT relay (double pole double throw)

Contact capacity: 220VAC, 5A non inductive, 3A inductive

Response time: Standard: 0.2 seconds

With delay: adjustable from 0.2 to 90 seconds

Electrical interface: M20 × 1.5

Explosion proof grade: Explosion proof type: d Ⅱ BT4~T6, intrinsic safety type: ia Ⅱ CT4~T6

Protection level: IP65

Process connection: Standard: 3/4 "NPT thread/1" NPT thread

HG20592-20635-97 DN25 or above, please indicate other flange standards (such as GB, JB/T, HGJ, ANSI, DIN, etc.) when placing an order

Cable length: The maximum distance from the split sensor to the electronic unit is 45 meters. If not specified by the user, it is 3 meters from the factory

Wetting material: 304/316SS and PTFE

Material of junction box: aluminum alloy

5 Electrode selection

electrode serial number	Electrode forms and typical applications	Working temperature and work pressure	Insert length	electrode material
01	standard form Used for liquids, lightweight slurries, and granules	121℃/2MPa	150～10000mm	316SS and PTFE
11	Heavy hanging material type Used for stirring liquids, thick slurries, and particles	121℃/1.6MPa	150～1000mm	316SS and PTFE
21	high-temperature type Used for liquids, lightweight slurries, and granules	180℃/10MPa	150～10000mm	316SS and PTFE
31	anti-corrosive Used for liquids, lightweight slurries, and granules	121℃/6MPa	150～5000mm	PTFE

■VIProduct Model

HR-SPDN-KG	RF admittance level switch, anti heavy hanging material, with switch status indication, independent junction box
	-	D	24VDC								power supply method
		A	220VAC
			0	Standard sensitivity (for conductive media)							sensitivity
			2	High sensitivity (for insulating media, ε>1.5)
				0	No delay (standard circuit unit)						time delay
				1	With delay (adjustable from 0.2 to 90 seconds)
				-	1	integrated					Instrument form
					2	split-type
						N	threaded connection				process connection
						F	flange connection
							0	普通型			Explosion proof options
							D	flameproof type
							E	Intrinsic safety type
								A	Standard type (temperature)<121℃）		Electrode form
								B	Heavy hanging material type
								C	Medium temperature type (temperature<180℃）
								D	anti-corrosive
								E	High temperature type (temperature)<800℃）
									-□□□□	Insertion depth (mm)