SITRANS LVS300 Overview

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SITRANS LVS300 Overview

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Thương hiệu: Siemens
Danh mục:

SITRANS LVS300
Tình trạng:
Còn hàng
Giá:Liên hệ

SITRANS LVS300 là một công tắc mức điểm thanh rung để phát hiện mức chất rắn khối lượng lớn, thấp hoặc theo yêu cầu.

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Overview

SITRANS LVS300 is a vibrating rod point level switch for high, low, or demand level detection of bulk solids.

Benefits

High resistance to mechanical forces.
Adjustable sensitivity for varied applications including build-up.
Rotatable enclosure for convenient wiring.
Suitable for low density material: standard version, 20 g/l (1.3 lb/ft³).
Customer desired extensions up to 4 000 mm (157 inch).
160 mm (6.3 inch) insertion length.
Flexible, customer supplied, rods to 4 meters.
Process connections starting at 1 inch.

Application

The standard LVS300 detects high, low, or demand levels of dry bulk solids in bins, silos, or hoppers.

A pipe extension version is available, separated by a customer supplied 1 inch pipe.

The LVS300 has a compact design and can be top, side or angle mounted. The vibrating rod design ensures the product will not be impacted by bridging of traditional forks in applications with buildup potential. A durable probe design ensures the product will withstand heavier materials without damage or bending.

A signal from the electronic circuit excites a crystal in the probe causing the rod to vibrate. If the rod is covered by material, the change in vibration is detected by the electronic circuitry which causes the output to change state after a one second delay. When the probe is free from material, full vibration resumes and the relay reverts to its normal condition.

Key Applications: dry or bulk solids with buildup potential, in bins, silos, or hoppers, such as lime, molding sand, milk powder, flour, salt, and plastic granules.

Technical specifications

SITRANS LVS300
Mode of operation
Measuring principle	Vibrating point level switch
Input
Measured variable	High, low, and demand
Measuring frequency
Standard	330 Hz
Output
PNP	Open collector: Permanent load max. 0.4 A, short-circuit and overload protected (reverse protection)
Relay	DPDT relay
Signal delay	Probe uncovered to covered: approximately 1 second Probe covered to uncovered: approximately 1 ... 2 seconds
Relay fail-safe	High or low, switch selectable
Alarm output	Relay 8 A at 250 V AC, non-inductive Relay 5 A at 30 V DC, non-inductive
Sensitivity	Four sensitivity settings, switch selectable
Rated operating conditions
Installation conditions
Location	Indoor/outdoor
Ambient conditions
Ambient temperature	‑40 ... +60 °C (‑40 ... +140 °F)
Storage temperature	‑40 ... +80 °C (‑40 ... +176 °F)
Installation category	II
Pollution degree	2
Medium conditions
Process temperature	-40 ... +150 °C (-40 ... +302 °F)
Pressure (vessel)	Max. 16 bar g (232 psi g) European Pressure Directive 2014/68/EU: Category 1
Minimum material density	Approx. 20 g/l (1.2 lb/ft³)
Design
Material
Enclosure	Aluminum powder coat
Process connection	G 1", G 1 1/4", G 1 1/2" DIN 228; NPT 1", NPT 1 1/4", NPT 1 1/2" ANSI B 1.20.1 Flange: according to selection 1.4541 (321) or 1.4404 (316L) Tri-clamp: stainless steel 1.4301 (304) or 1.4404 (316L) 2" (DN 50) ISO 2852
Probe material	Oscillator material: stainless steel 1.4404 (316L) Stainless steel 1.4301 (304)/1.4541 (321) or 1.4404 (316L) (process connection and tube extension)
Degree of protection	IP67 (EN 60529), NEMA Type 4X
Conduit entry	2 x M20 x 1.5 or 2 x ½" NPT
Weight	Standard version: 1.3 kg (2.9 lb) +1.3 kg/m (+2.9 lb per 39.3 inch) extension Customer supplied pipe: 1.8 kg (4.0 lb) +1.3 kg/m (+2.9 lb per 39.3 inch) extension
Power supply	Relay DPDT 21 ... 230 V, 50 ... 60 Hz, ± 10 %* 22 VA, 22 ... 45 V DC, ± 10 %* 2W incl. ± 10 % of EN 61010 3-wire PNP 20 ... 40 V DC, ± 10 % *incl. ± 10 % of EN 61010
Certificates and approvals	CE, ATEX, FM

Dimensional drawings

SITRANS LVS300 enclosure, dimensions in mm (inch)

SITRANS LVS300, dimensions in mm (inch)

Circuit diagrams

SITRANS LVS300 connections

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SITRANS LVS300 Overview

Overview

Benefits

Application

Technical specifications

Dimensional drawings

Circuit diagrams