Product Overview

SITRANS LVS100 is a vibrating point level switch designed for material detection in bulk solids.

Benefits

• High resistance to mechanical forces.
• Sliding sleeve options for adjustable insertion length and ease of cleaning.
• Rotatable enclosure for ease of installation and wiring.
• Suitable for point level detection of materials starting at a bulk density of 30 g/l (1.9 lb/ft³).
• Customer desired extensions up to 4 000 mm (157.48 inch).

Application

SITRANS LVS100 detects high, low, or demand levels of dry bulk solids in bins, silos, or hoppers. SITRANS LVS100 has a compact design and can be top, side, or angle mounted. The vibrating fork design ensures the tines are kept clean. The unique design of the fork and crystal assembly eliminates false high level readings even if tines become damaged.

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

Key Applications: dry bulk solids in bins, silos, hoppers.

Technical Specifications

Specification	Value
Mode of Operation - Measuring principle	Vibrating point level switch
Input - Measured variable	High, low, and demand
Measuring frequency	200 Hz
Output - Relays	DPDT relay
Output - Relay delay	From loss of vibration: approximately 1 second From resumption of vibration: approximately 1 ... 2 s
Output - Signal delay	Probe uncovered to covered: approximately 1 s Probe covered to uncovered: approximately 1 ... 2 s
Output - Relay fail-safe	High or low, switch selectable
Output - Alarm output	Relay 8 A at 250 V AC, non-inductive Relay 5 A at 30 V DC, non-inductive
Sensitivity	High or low, switch selectable
Rated operating conditions - Location	Indoor/outdoor
Ambient conditions - Ambient temperature	‑40 ... +60 °C (‑40 ... +140 °F)
Ambient conditions - Storage temperature	‑40 ... +80 °C (‑40 ... +176 °F)
Ambient conditions - Installation category	III
Ambient conditions - Pollution degree	2
Medium conditions - Process temperature	‑40 ... +150 °C (-40 ... +302 °F)
Medium conditions - Max. threaded bushing temperature	80 °C (176 °F)
Medium conditions - Max. enclosure surface temperature (Category 2D)	90 °C (194 °F)
Medium conditions - Max. extension surface temperature (Category 1D)	150 °C (302 °F)
Medium conditions - Pressure (vessel)	Max. 10 bar g (145 psi g) European Pressure Directive 2014/68/EU: Category 1
Medium conditions - Minimum material density	Approx. 30 g/l (1.9 lb/ft³)
Design - Material - Enclosure	Epoxy coated aluminium
Design - Material - Process connection	Thread 1¼" NPT [(Taper), ANSI/ASME B1.20.1], R 1½" [(BSPT), EN 10226] Thread R 1½" [(BSPT), EN 10226], ½" NPT [(Taper), ANSI/ASME B1.20.1], sliding sleeve [min. length 500 mm (19.69 inch)] Thread material: stainless steel 304 (1.4301) or 316L (1.4404) depending on configuration
Design - Material - Tine material	Stainless steel 316L (1.4404)
Design - Degree of protection	IP66/Type 4/NEMA 4
Design - Conduit entry	2 x M20 x 1.5 or 2 x ½" NPT (For FM and CSA approved versions only.)
Design - Weight - Standard version, no extensions	approx. 1.7 kg (3.7 lb)
Power supply	19 ... 230 V AC, +10 %, 50 ... 60 Hz, 8 VA 19 ... 40 V DC, +10 %, 1.5 W
Certificates and approvals	CSA/FM General Purpose CE CSA/FM Dust Ignition Proof RCM ATEX II 1/2 D IECex