Ring-11 Liquid Level Switch with Gas-tight Leadthrough

Ring-11 is a universal level switch for use in all liquids. It is a point level sensor with tuning fork for point level detection that is designed for industrial use in all areas of process technology.

It functions even under difficult conditions such as turbulence, air bubbles, foam generation, buildup, strong external vibration or changing products.

The gas-tight lead-through version is designed for toxic gases, high pressure and high temperature applications.The high-pressure protective gas-tight leadthrough of Jiwei Ring-11 High-pressure Protection Liquid Level Switch is the glass-metal encapsulation connector that configures between process connection and meter head. The sealing effect is achieved by the cooperation of borosilicate glass and stainless steel, which prevents the fork body from penetrating under high temperature and high pressure in the long run, and prevents the high temperature liquid from penetrating into electronic module of the meter head through addition pipe and process connection, and also prevents the occurrence of flushing out housing leading to the accidentally leakage. In addition, the high-pressure gas-tight leadthrough can also protect the piezoelectric components from moisture.

The special setting of high-pressure protective gas-tight leadthrough makes Ring-11 High-pressure Liquid Level Switch effectively prevent accidental leakage of high-pressure strong corrosive liquid.

Piezoelectric devices are utilized to achieve vibration drive and detection. Once resonant vibration fork comes into contact with application medium, vibration frequency of forks substantially decreases, and the output signal from piezoelectric detection device decreases accordingly. Then an integrated circuit is designed to analyze the signal from piezoelectric device and output a switch signal as a result.

●　Precise and reliable function due to product-independent switching point.

●　Minimum time and cost expenditure thanks to simple setup without medium.

●　The electronic part has been modularized.

●　The high-temperature extension tube can be chosen from ECTFE and PFA coating.

●　Output options: relay, transistor, two-wire and NAMUR.

●　Specialized for the process industry and developed according to IEC 61508 to be used directly in SIL2 and SIL3 applications.

●　With CE Certificates, CCC Certificates and CCS Certificate for ships (China Classification Society).

Applicable liquid	Density	≥0.5g/cm³
	Viscosity	0.1～10000mPa.s ①
	Flow velocity	Max. 6m/s
Probe data	Surface finish	Ra<0.5μm ②
	Vibration frequency	～1200Hz
	Fork length	40mm
Accuracy	Measurement error	±1mm
	Delay	2mm
	Repeatability	0.1mm
Switching delay	When immersed	0.5s
Switching delay	When laid bare	1s
Power supply	Relay	20～253V AC/20～72V DC
	Two-wire	10～36V DC
	NAMUR	8.2V DC
	Transistor	6～48V DC
	Max. power consumption	8VA(AC)；1.5W(DC)
Output	Relay	5A/253V AC/24V DC
	Two-wire	8mA/16mA，Alarm<2.3mA
	NAMUR	≤1mA or ≥2.1mA， Fault ≤1mA
	Transistor	NPN/PNP
Installation conditions	Process pressure	-1～64bar
	Process temperature	Regular temperature: -50～150℃
	Process temperature	High temperature: 50～250℃
	Ambient temperature	-40～70℃
	Storage and transport temperature	-40～80℃
Overvoltage protection	Relay	Category III, class I
Overvoltage protection	Two-wire	Category III, class II
Certificates and approvals	SIL Qualification	SIL2 (HFT=0) / SIL3 (HFT=1)
	China Compulsory Certification	CCC
	China Classification Society	CCS certificate for ships
	Explosion-Proof	Flameproof Enclosure: Ex d IIC T6～T1 Gb
	Explosion-Proof	Intrinsic Safety: Ex ia IIC T6～T1 Ga
	CE	LVD and EMC Certificates
	Ingress Protection	IP66/IP67
Materials	Housing	Aluminum alloy, , stainless steel
	Ground terminal	316L
	Thread connection	316L
	Flange connection	316L, 316L coated Enamel, ECTFE, PFA
	Fork	316L, 316L coated Enamel, ECTFE, PFA
	Process seal	Klingersil C-4400