SITRANS LVL200 Overview

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SITRANS LVL200 Overview

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Thương hiệu: Siemens
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SITRANS LVL200
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Còn hàng
Giá:Liên hệ

SITRANS LVL200 là một công tắc mức rung tiêu chuẩn được sử dụng để phát hiện vật liệu trong các ứng dụng chất lỏng và hỗn hợp lỏng như ứng dụng tràn, mức cao, mức thấp và ứng dụng yêu cầu, cũng như bảo vệ bơm. Công tắc này có thể được sử dụng trong các ứng dụng đạt tiêu chuẩn SIL-2 (Safety Integrity Level - mức độ toàn vẹn an toàn 2).

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Overview

SITRANS LVL200 is a standard vibrating level switch for material detection in liquid and slurry applications such as overflow, high, low, and demand applications, as well as pump protection. For use in SIL-2 applications.

Benefits

Proven vibrating level switch technology for liquids
Compact insertion length of 40 mm (1.57 inch) for confined space applications
Fault monitoring for corrosion, loss of vibration or line break to the piezo drive
Functional Safety (SIL 2). Device suitable for use in accordance with IEC 61508 and IEC 61511
Hygienic process connections
Suitable for API 2350
Optional remote test signal conditioner

Application

SITRANS LVL200 is a level switch designed for industrial use in all areas of process technology and can be used with liquids and slurries. With a tuning fork insertion length of only 40 mm (1.57 inch), SITRANS LVL200 can be mounted in small pipes and applications with confined space. The LVL200 can be used to measure products with a minimum density of > 0.5 g/cm³ (0.018 lb/in³). The LVL200 can be used in difficult conditions including turbulence, air bubbles, foam generation, buildup, or external vibration.

SITRANS LVL200 continuously monitors faults via frequency evaluation, providing early detection of strong corrosion or damage on the tuning fork, loss of vibration, or a line break to the piezo drive.

The tuning fork is piezoelectrically energized and vibrates at its mechanical resonance frequency of approximately 1 200 Hz. The vibration frequency changes when the tuning fork is covered by the medium. This change is detected by the integrated oscillator and converted into a switching command. The integrated electronics evaluate the level signal and output a switching signal, directly operating connected devices.

The optional signal conditioner provides a remote test feature to ensure continuous product reliability.

Key Applications: for use in liquids and slurries, for level measurement, overfill, and dry run protection

Configuration

SITRANS LVL200 installation, dimensions in mm (inch)

Technical specifications

SITRANS LVL200
Mode of operation
Measuring principle	Vibrating point level switch
Input
Measured variable	High and low and demand (via mode switch)
Output
Output options	Relay output (DPDT), 2 floating SPDTs Contactless electronic switch 2-wire Namur signal output Transistor (NPN/PNP) 10 ... 55 V DC 8/16 mA
Measuring accuracy
Repeatability	0.1 mm (0.004 inch)
Hysteresis	Approx. 2 mm (0.08 inch) with vertical installation
Switching delay	Standard, Extended: approx. 500 ms (on/off) High temperature: approx. 1 s (optionally adjustable at factory)
Frequency	Standard, Extended: Approx. 1 200 Hz High temperature: 1400 Hz
Rated operating conditions
Installation conditions
Location	Indoor/outdoor
Ambient conditions
Ambient temperature	‑40 ... +70 °C (‑40 ... +158 °F)
Storage temperature	‑40 … +80 °C (‑40 … +176 °F)
Installation category	III
Pollution degree	2
Medium conditions
Temperature
LVL200S Standard	-50 ... +150 °C (-58 ... +302 °F)
LVL200S High temperature option	-50 ... +250 °C (-58 ... +482 °F)
LVL200E Standard: with 316L/ Alloy C22	-50 ... +150 °C (-58 ... +302 °F)
LVL200E High temperature option with 316L/Alloy C22	-50 ... +250 °C (-58 ... +482 °F)
LVL200H High temperature	-196 … +450 °C (-321 … +842 °F)
Pressure (vessel)	Standard, Extended: -1 ... 64 bar g (-14.5 ... 928 psi g) High temperature: instrument version up to 160 bar (2 320 psi g): -1 … 160 bar/-100 … 16 000 kPa (-14.5 … 2 320 psi g) Note: The process pressure is dependent on configuration, including process fitting, e.g. flange
Density	0.7 ... 2.5 g/cm³ (0.025 ... 0.09 lb/in³); 0.5 ... 2.5 g/cm³ (0.018 ... 0.09 lb/in³) by switching over Density optionally starts at 0.47 cm³ (0.017 lb/in³)
Design
Material
Enclosure	Aluminum die-cast AISi10Mg, powder-coated, basis: Polyester Stainless steel housing, electropolished 316L Stainless steel housing, precision casting 316L Plastic housing, plastic PBT (Polyester)
Tuning fork	316L (1.4404 or 1.4435), Alloy C22
Extension tube [ø 21.3 mm (0.839 inch)]	316L (1.4404 or 1.4435), Alloy C22
Process connection: threaded	Standard, Extended: 316L (1.4404 or 1.4435), Alloy C22 High temperature: Inconel 718
Process connection: flange	316L (1.4404 or 1.4435), 316L with Alloy C22, ECTFE, or PFA coating
Process seal	Klingersil C-4400
Process connection
Pipe thread, cylindrical (ISO 228 T1)	G ¾" A, G 1" A
Pipe thread, tapered	¾" NPT, 1" NPT, 1½" NPT
Flanges	DIN from DN 25, ASME from 1"
Hygienic fittings	Bolting DN 40 PN 40, 1, 1½, 2, 2½" Tri-Clamp PN 10, conus DN 25 PN 40, Tuchenhagen Varivent DN 50 PN 10, SMS
Degree of protection	Type 4X/NEMA 4X/IP66/IP67
Conduit entry	1 x M20 x 1.5 (cable: ø 5 ... 9 mm), 1 x blind stopper M20 x 1.5; attached 1 x M20 x 1.5 cable entry 1 x ½" NPT cable entry, 1 x blind stopper ½" NPT, 1 x ½" NPT cable entry 1x M12 x 1; 1 x blind stopper M20 x 1.5
Weight
Device weight (dependent on process fitting)	Approx. 0.8 ... 4 kg (0.18 ... 8.82 lb)
Tube extension (extended version)	Approx. 920 g/m (10 oz/ft)
Power supply
Supply voltage
Relay DPDT	20 ... 253 V AC, 50/60 Hz, 20 ... 72 V DC
Contactless	20 ... 253 V AC, 50/60 Hz, 20 ... 253 V DC
2-wire NAMUR
Operating voltage (characteristics according to standard) for connection to an amplifier according to NAMUR	IEC 60947-5-6, approx. 8.2 V Off-load voltage U_o approx. 8.2 V Short-circuit current I_U approx. 8.2 mA
Operating voltage 8/16 mA (via the signal conditioning instrument)
Non-Ex instrument	12 … 36 V DC
Ex-d instrument (ATEX, FM, CSA)	12 … 36 V DC
Ex-ia instrument (ATEX)	12 … 29 V DC
Ex-ia instrument (FM, CSA)	12 … 31 V DC
Power consumption	Standard, Extended: 1 ... 8 VA (AC), approx. 1.3 W (DC) High temperature: 3 VA (AC), 1 W (DC)
Relay DPDT	1 ... 8 VA (AC), approx. 1.3 W (DC)
Contactless	Domestic current requirement approx. 3 mA (via load circuit)
	Load current Min. 10 mA Max. 400 mA [with I > 300 mA the ambient temperature can be max. 60 °C (140 °F)] Max. 4 A up to 40 ms (not WHG specified)
8/16 mA, two-wire output	Output signal Empty (uncovered) 8 mA Full (covered) 16 mA Fault message < 1.8 mA Possible signal conditioning instruments: SITRANS SCSC, SITRANS TCSC
2-wire Namur	Current consumption Falling characteristics ≥ 2.6 mA uncovered/≤ 0.6 mA covered ≤ 0.6 mA uncovered/≥ 2.6 mA covered Failure message ≤ 0.6 mA
Transistor (NPN/PNP) 10 ... 55 V DC	Output Floating transistor output, permanently shortcircuit-proof Load current < 400 mA Voltage loss < 1 V Switching voltage < 55 V DC Blocking current < 10 μA
Certificates and approvals	CE, CSA Overfill Protection WHG and VLAREM II FM (Non-Incendive) Class I, Div. 2, Groups A, B, C, D FM (Explosion-Proof) Class I, Div. 1, Groups A, B, C, D; (Dust Ignition-Proof) Class II, III, Div. 1, Groups E, F, G1 IECEx d IIC T6 ... T2 Ga/Gb EHEDG ATEX II 1/2G, 2G EEx d IIC T6 ATEX II 1G, 1/2G, 2G EEx ia IIC T6 Shipping approvals BR-Ex d IIC T6 ... T2 FDA, 3A, EHEDG SIL/IEC61508 Declaration of Conformity [SIL-2 (min/max detection)] Please see configuration section below for full list of approvals.