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WIKA · Level measurement · Family TLS_S

Vibrating level switch

The core element of the vibrating level switch is the vibrating fork with integrated vibration drive. When the vibrating tuning fork is immersed in the ...
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Description

The core element of the vibrating level switch is the vibrating fork with integrated vibration drive. When the vibrating tuning fork is immersed in the medium, the resonance frequency of the tuning fork decreases. The frequency change is detected by the electronic circuit and is converted to a switching signal. Irrespective of the mounting position, level changes can be detected very accurately.

The respective switch point can be changed via a pipe extension. The high switch point accuracy can be individually adjusted to the respective application using ten sensitivity levels. It is also possible to set a switching delay of 1 ... 20 seconds with the model TLS-S. For use in hazardous areas, explosion-protected versions are also available.

For further approvals, see page 5

Vibrating level switch, model TLS

The vibrating level switches are, depending on the version, suitable for an operating temperature of -100 ... +200 °C [-148 ... +392 °F] and an operating pressure of -1 ... +100 bar [-14 ... +1,450 psi]. The vibrating level switch is suitable for media with a density of 500 ... 2,500 g/cm³ [289 ... 1,445 oz/in 3] . The viscosity of the media should be between 0.1 and 10,000 cP [0.24 and 21,190 lb/ft·h].

Special features

  • Robust design for the process industry
  • Explosion-protected version
  • Low maintenance costs
  • Stable and reliable level detection, unaffected by flow, bubble formation, vibrations, build-up or solids in the medium
Specifications are being prepared — full datasheet available on request.
Tables from datasheet
ModelDescription
TLS-SAVibrating level switch, without Ex
TLS-SADVibrating level switch, with Ex d approval
Mounting threadMounting thread with cooling ele- ment and extensionFlange versionFlange version with cooling element and extension
 Connection housing  Direction mark  Switch point  Cooling element  Extension         
90 x 125 mm[3.54 x 4.92 in]
Connection housing Electrical connection Cable gland■ M20 x 1.5 ■ 1/2" NPT ■ 3/4" NPT
Cable bushing Process connection■ M20 x 1.5 ■ 1/2" NPT ■ 3/4" NPT ■ G3/4" ... 2" ■ 3/4 " ....2 " NPTDN25 ...DN100 per DIN 1" ... 4" per ASME B16.5EN 1092-1
Material-40 ...+200 °C [-40 ...+392 °F]
ConnectionAluminium■ ■
housing Wetted parts■ Stainless steel 1.4404 ■ Stainless steel 1.4404, ■ Stainless steel 1.4404 ■ Stainless steel 1.4404 ■ Hastelloy C-276(316L) 14435 (316L), electropolished (316L) with PFA coating (316L) with ECTFE coating electropolished °F]
Ambient temperature Supply voltage Process temperature■ Hastelloy C-276, -40 ...+60 °C [-40 ...+140 DC 24V-40 ...+150 °C [-40 ...+302 °F]
Density of the medium Operating pressure Switching delay-40 ...+150 °C-40 ...+200 °C [-40 ...+392 °F]
[-40 ...+302 °F] ≥ 500 ... 2,500 kg/m³
... +1,450 psi]
Sensitivity setting Switching output-1 ...+100 bar [-14.5 1 ... 20 seconds(adjustable)
Power consumption Max. switching power Insertion length1 ... 10 steps (adjustable) ■ DPDT relay output ■ PNP transistor ■ NAMUR <1W DC 30V / 5 A[3.0 ... 236.22 in] length - 13 mm[0.51 in]60 mm[2.36 in]
(relay output) IP ingress protection Switch point76 ...6,000mm60 ...6,000mm [2.36 ... 236.22 in]
calculation Tuning fork length
■ 42 mm[1.65 in] ■
output IP66/68 76 mm[3.0 in]
Switch point = insertion
38 mm[1.50 in]
Clamp connectionClamp connection with cooling ele- ment and extensionDIN 11851 food-compliant pro- cess connectionDRD65 food-com- pliant process connection
 Connection housing  Switch point  Cooling element  Extension        
Connection housing90 x 125 mm[3.54 x 4.92 in]
Electrical connection
Cable gland■ M20 x 1.5 ■ 1/2" NPT
Cable bushing■ M20 x 1.5 ■ 1/2" NPT ■ 3/4" NPT
Process connection1" ... 4" per ASME BPEDN20 ...DN100DRD65
Material
Connection housingAluminium
Wetted parts■ Stainless steel 1.4404 (316L) ■ Stainless steel 1.4404, 14435 (316L), electropolished ■ Stainless steel 1.4404 (316L) with PFA coating ■ Stainless steel 1.4404 (316L) with ECTFE coating ■ Hastelloy C-276 ■ Hastelloy C-276, electropolished
Ambient temperature-40 ...+60 °C [-40 ...+140 °F]
Supply voltageDC 24V
Process temperature-40 ...+150 °C [-40 ...+302 °F]-40 ...+200 °C [-40 ...+392 °F]■ -40 ...+150 °C [-40 ...+302 °F] ■ -40 ...+200 °C [-40 ...+392 °F] with cooling element■ -40 ...+150 °C [-40 ...+302 °F] ■ -40 ...+200 °C [-40 ...+392 °F] with cooling element
Density of the medium≥ 500 ... 2,500 kg/m³
Operating pressure-1 ...+100 bar [-14.5 ... +1,450 psi]
Switching delay1 ... 20 seconds (adjustable)
Sensitivity setting1 ... 10 steps (adjustable)
Switching output■ DPDT relay output ■ PNP transistor output ■ NAMUR (8.2 V)
Power consumption<1W
Max. switching power (relay output)DC 30V / 5 A
IP ingress protectionIP66/68
Insertion length■ 60 mm[2.36 in] ■ 43 mm[1.69 in] ■ 47 mm[1.85 in]60 ...6,000mm [2.36 ... 236.22 in]60 mm[2.36 in]60 ...6,000mm [2.36 ... 236.22 in]
Switch pointSwitch point = insertion length - 13 mm[0.51 in]
Tuning fork length■ 42 mm[1.65 in] ■ 38 mm[1.50 in]
Surface roughness (wetted)■ Ra ≤ 0.76 μm ■ Ra ≤ 0.38 μm
LogoDescriptionRegion
EU declaration of conformity 2 1 2 1 2 12 1 1 2 1 1 2 2 1 1European Union
EMCdirective EN 61326 emission (group 1, class B) and immunity (industrial environments) RoHS directive UKCA 3 3 3 3United Kingdom 3 3 3 33
Electromagnetic + + +compatibility regulations Restriction of hazardous substances (RoHS) regulations + + + ++ +
View all (6)
LogoDescriptionRegion
EU declaration of conformity 4 3 4 3European Union 4
ATEX directive Hazardous areas 4 3 2 1 4 3 2 1
IECEx Hazardous areas - Ex d Zone 1 gas Ex db IIC T6 ...T3 Ga/Gb + +International
NEPSI Hazardous areas + + + +China + +
- Ex d Zone 1 Zone 1,gas dust Ex d IIC T3...T6 Gb Ex tb IIIC T85°C ...T200°C Db gas dust Ex ia IIC T3...T6 Ga
- Ex i Zone 0 Zone 1,Ex ib IIIC T85°C ...T200°C Db
Certificates
Certificates■ 2.2 test report per EN 10204 (e.g. state-of-the-art manufacturing, material proof) ■ 3.1 inspection certificate per EN 10204 (e.g. material proof for wetted metal parts)