Level Switches #1216532

Tuning Fork Level Switch (Series TFLS)

series tfls tuning fork level switch

perfect for sensing low bulk density or low dielectric materials

series tfls tuning fork level switch is ideal for level control of powders and fine grained solids, especially those with a low bulk density. The tfls incorporates a piezoelectric crystal that vibrates the fork at its natural frequency. When the fork comes in contact with material, the vibration is dampened and the switch changes state. As the fork becomes free of material, the switch changes back to its normal state. Featured in the tfls is user-selectable fail-safe operation of the contacts. Unit is not affected by vibration from conveying systems, motors, or the movement of material. It can be mounted in any position and is available with factory built extensions for mounting on the top of the storage vessel.series tfls is easy to use, with no calibration required and with no mechanical moving parts there is no routine maintenance required. The tfls is unaffected by the dielectric constant of the sensed material, making it superior to a capacitance level switch for applications where the dielectric constant is too low, where there is more than one material being used in one vessel, and when material moisture content can change. The level switch is also good for applications when the bulk density is too low for a rotating paddle level switch. It can also detect granular material submerged in liquids of low viscosity, for example sand, gravel, or polyester chips in water.

product applications

lime, styrofoam, dry cereals, sugar, animal feed, milk powder, flour, insulation, cement, paper shavings, plastic granules, sawdust, carbon black, light fibers, detergent powders, dyes, chalk, silica, sand, wood chipschemical processingpulp and paper processingminingfood and beverage

model description

tfls-w11sr1tuning fork level switch.

specifications

service:dry powder or bulk materials compatible with wetted materials. Can detect bulk materials submerged in liquid.sensitivity:minimum bulk density of 1.8 lb/ft (30 g/l), maximum particle size 0.4" (10 mm).wetted materials:316 ss.temperature limits:ambient: -4 to 140f (-20 to 60c).pressure limit:145 psig (10 bar).power requirement:90 to 265 vac, 50/60 hz; 24 vdc.power consumption:4 va.enclosure:aluminum, powder coated.enclosure rating:weatherproof, nema 4x.switch type:spdt.electrical rating:5 a @ 230 vac.electric connections:screw terminals.conduit connection:3/4" female npt.process connection:1-1/2" male npt.indication lights:external: red led; internal: green and red led's.sensing delay:(maximum) covered probe: 2 s.; uncovered probe: 3 to 7 s.time delay:separate settings for covering and uncovering the probe. Adjustable from 2 to 20 seconds.weight:5.5 lb (2.5 kg).

features

no calibration required.

vibrating fork design: great for low bulk density and low dielectric constant products. Will detect products down to 1.8 lb/ft3 (30 g/l).universal power supply: one model works with 90 to 265 vac and 24 vdc.adjustable sensitivity: can be set to ignore lighter bulk density products and only detect heavier products, such as sand in water.status indication: external led switch indicator, and internal indicators for normal and alarm status.failsafe setting: output switch can be set for normally open or normally closed condition on loss of power.time delay: prevent false alarms from material surges.no maintenance required.any position mounting: available with factory built extensions for mounting on the top of the storage vessel.Temperature : Ambient: -4 To 140F (-20 To 60C).

level switches vertical (series f6 & f7)

series f6 & f7 level switches - vertical

low cost, reliable and compact, hermetically sealed contacts

the series f6 & f7 vertical level switches are designed to be mounted at the maximum or minimum level point to provide level indication and control. Models are shipped with normally open switch contacts which close as the float rises toward the mounting threads.

product applications

water level monitoring

oil level control

chemical level indication

sumpsstand pipes

tank level control

high viscosity liquids

specifications

series f6

service:compatible liquids.

wetted materials:see model table on catalog page.

temperature limit:f6-ss & f6-mhs: -4 to 257f (-20 to 125c). F6-hps-11, 21, 31: 14 to 176f (-10 to 80c).

pressure limit:f6-ss & f6-mhs: 218 psi (15 bar). F6-hps-11, 21, 31: 116 psi (8 bar).

enclosure rating:general purpose.

switch type:spst hermetically sealed reed switch, reversible for no or nc.

electrical rating:20 va: 0.17 a @ 120 vac, 0.08 a @ 240 vac.

electrical connections:22 awg, 11.811" (300mm) long.

process connection:f6-ss: 1/8" npt, hps-21, 31: 1/2" npt, f6-mhs, f6-hps-11: m16*2.

mounting orientation:f6-ss: vertical 20, f6-mhs/hps: horizontal with index arrow pointing up or down.

specific gravity:f6-ss: 0.65, f6-mhs: 0.85, f6-hps-11, 21, 31: 0.6.

weight:f6-hps-11, 21: 1.23 oz (38 g), f6-mhs-31: 1.41 oz (40 g), f6-mhs: 3.35 oz (95 g), f6-ss: 1.59 oz (45 g).

agency approvals:ce.

series f7

electrical rating (maximum):f7-sb, -ss2 ac: 25 va, 1.0a, 200 v dc: 10 w, 1.0 a, 200 v f7-pp, -bt, -hss, -mhs ac: 25 va, 1.0 a, 200 v dc: 10 w, 1.0 a, 200 v f7-hps-1, -2 ac: 25 va, 1.0 a, 200 v dc: 10 w, 1.0 a, 200 v (f7-hss is rated explosion-proof for class i, groups a, b, c, d; class ii, groups e, f, g; class iii).

mounting connection:1/8" nptm (all vertical mount), 1/2" nptm (f7-hps-2, f7-hss), m16 x 2 (f7-hps-1), 1/2" x 13 thread (f7-mhs).

wire leads:22 awg x 18" (46 cm), vertical mount models; 22 awg x 39" (1 m), models f7-hps-1, -2; 22 awg x 24" (61 cm), models f7-hss, -mhs.

magnet:alnico (f7-sb, -pp, -bt, -hps), ceramic (f7-ss2, -hss, -mhs).

weight:2 oz. (58 g), f7-sb; 1.2 oz. (34g), f7-ss2; 0.8 oz. (23 g), f7- pp; 0.7 oz. (20 g), f7-bt; 1.5 oz. (43 g), f7-hps-1; 2 oz. (57 g), f7- hps-2 and -mhs; 3 oz. (94 g), f7-hss.

features

combine low cost and reliability with fast, simple installation

hermetically sealed reed switches are actuated by magnets permanently bonded inside the float and can be easily adapted to open or close a circuit on rising or falling levels

easily reverse switch action by removing the float, rotating it end-for-end and replacing it on the stem

vertical models mount internally, oriented within 30 of vertical, or select optional fittings for external mounting

switch ratings are suitable for many solid state control systems and monitors or alarms

simple relay interfaces can be used for higher current applications

temperature : 31: 14 to 176f (-10 to 80c).

certification : yes

type : level switches vertical

voltage : 0.08 a @ 240 vac

application : compatible liquids

brand name : dwyer usa

power : 0.08 a @ 240 vac

paddle level switch (series pls)

series pls paddle level switch

weatherproof and explosion proof option, rotary paddle level control, top or side mounting for dry bulk materials, incorporated in the design of the pls is a magnetic drive that is time proven by decades of use in our mark series valve position indicator product line. A 1 rpm synchronous motor rotates the paddle, utilizing a magnetic drive. As product builds up, the paddle is impeded from moving and the resulting motor torque activates the output switches and stops the motor. A spring mechanism reactivates the motor and returns the switches to normal state when the product no longer impedes the paddle rotation.standard construction is weatherproof with explosion-proof optional, and the unit can be side or top mounted. The pls is designed with the industry standard 1-1/4" male npt connection and mounting flanges.

modeldescription

flg-csfcarbon steel mounting flange with full coupling.

flg-cshcarbon steel mounting flange with half coupling.

flg-ssf316 ss mounting flange with full coupling.

flg-ssh316 ss mounting flange with half coupling.

pdl-1carbon steel paddle with half coupling.

minimum bulk density of 5 lb/ft (80 kg/m).

pdl-2carbon steel paddle with full coupling.

minimum bulk density of 30 lb/ft (481kg/m).

pdl-3316 ss paddle with half coupling.

minimum bulk density of 30 lb/ft (481 kg/m). Fits through a 1-1/4" coupling eliminating the need for a mounting flange.

pdl-4316 ss paddle with full coupling.

minimum bulk density of 70 lb/ft (1122 kg/m). Fits through 1-1/4" coupling eliminating the need for a mounting flange.pls-w-s-1-0-0-0-0paddle level switch, spdt, weatherproof, 120 vac power supply.

specifications

service:dry powder or bulk materials compatible with wetted materials.sensitivity:minimum material density of 5 lb/ft (80 kg/m), maximum of 200 lb/ft (3200 kg/m).wetted materials:paddles: 316 ss. Exposed shaft: 316 ss. Shaft seal: ptfe. Mounting boss: aluminum. Flexible coupling: 316 ss. Mounting flanges: carbon steel or 316 ss. Shaft extension and shaft guards: galvanized steel or 316 ss.temperature limits:standard construction: process: -40 to 300f (-40 to 148.9c), ambient: -40 to 185f (-40 to 85c); high temperature: process: -40 to 500f (-40 to 260c), ambient: -40 to 185f (-40 to 85c).pressure limit:30 psig (2.07 bar) maximum for .5 micron or larger material.power requirement:select by part number: 110-120 vac, 230 vac, 24 vac, 48 vac, or 12 vdc.power consumption:weatherproof models: 5 watts, explosion-proof models: 3 watts.enclosure:aluminum, powder coated.enclosure rating:weatherproof (w, wh construction): nema 4x, explosion-proof (e, eh construction): nema 4x and rated for class i, div. 1 & 2, groups c & d, div. 1 & 2, groups e, f, & g.switch type:spdt or optional dpdt snap switch.electrical rating:15 a @ 120.electric connections:screw terminals.conduit connection:3/4" female npt.process connection:1-1/4" male npt. Optional flange.indication light:red led that activates when switch is made or when switch is not made with rl option (not available on explosion-proof models).time delay relay option:five field adjustable ranges from 0-1 to 0-31 minutes. (rl option not available, dpdt option not available with 230 vac time delay).weight:control head only: 4 lb (1.81 kg).agency approvals:cul, ul approved as an auxiliary device or as an auxiliary device for hazardous locations.

voltage : or 12 vdc.

application : dry powder or bulk materials compatible with wetted materials.

certification : yas

material : paddles: 316 ss. Exposed shaft: 316 ss. Shaft seal: ptfe. Mounting boss: aluminum. Flexible coupling

brand name : dwyer usa

Vibrating Rod Level Switch (Model VRLS)

Model VRLS Vibrating Rod Level Switch

Economical, No Material Build Up, For Powder or Bulk Solids

The Model VRLS Vibrating Rod Level Switch is an economical choice in level detection of powders and bulk soli. The VRLS utilizes a piezoelectric crystal that vibrates the rod at a natural frequency. Once the rod comes in contact with the material, the vibration will be dampened and the switch will change state. Once the rod is uncovered by the material, the switch will revert to its normal state. Perfect for silo or hopper applications, its probe design allows for self-cleaning, ensuring no build-up or bridging of material and accurate detection. Sensitivity is adjustable for detection ranging from large granular material to small powders with low bulk densities. The failsafe mode can be set for failure on high level or failure on low level using a selector switch in the enclosure.

Product Applications

Lime, Styrofoam, Dry Cereals, Sugar, Animal Feed, Milk Powder, Flour, Insulation, Cement, Paper Shavings, Plastic Granules, Sawdust, Carbon Black, Light Fibers, Detergent Powders, Dyes, Chalk, Silica, And Wood Chips.

ModelDescription

VRLS-01Vibrating rod level switch.

Specifications

Service:Dry powder or bulk materials compatible with wetted materials.

Sensitivity:Min. bulk density of 20 lb/ft3 (320 kg/m3).

Wetted Materials:304 SS.

Temperature Limits:Ambient: -40 to 140F (-40 to 60C);

Process: -40 to 176F (-40 to 80C).

Pressure Limit:150 psi (10 bar).

Power Requirement:20 to 250 VAC/VDC, 50/60 Hz.

Power Consumption:15 VA.

Enclosure:Aluminum, painted.

Enclosure Rating:IP65.Switch Type:SPDT.Electrical Rating:5 A @ 250 VAC.

Electrical Connections:Screw terminals.

Conduit Connection:1/2" female NPT x 2.

Process Connection:1" male NPT.

Indication Lights:Internal: green and red LED.

Sensing Delay:0 to 6 s.

Weight:4.4 lb (2.0 kg).

Features

Probe design allows for self-cleaning, ensuring no build-up or bridging of material and accurate detection

No mechanical moving parts with no routine maintenance required

Sensitivity is adjustable for detection ranging from large granular material to small powders with low bulk densities

The failsafe mode can be set for failure on high level or failure on low level using a selector switch in the enclosure

Unaffected by the dielectric constant of the sensed material, making it superior to a capacitance level switch for applications where the dielectric constant is too low, where there is more than one material being used in one vessel, and when material moisture content can change

Ideal for applications where the bulk density is too low for a rotating paddle level switch

Voltage : 50/60 Hz

Certification : YES

Material : 304 SS.

Brand Name : DWYER USA

Application : Dry Powder Or Bulk Materials Compatible With Wetted Materials.

Temperature : Ambient: -40 To 140F (-40 To 60C);

Power : 50/60 Hz

Type : Vibrating Rod Level Switch

horizontal level switches (series f6 & f7)

series f6 & f7 level switches - horizontal/specialty

low cost, hermetically sealed contacts

the series f6 & f7 horizontal float level switches are designed to mount through the walls of tanks and other vessels. Internally mounted models f6-hps-11, f6-mhs and f7-ss6 are secured to the wall of the tank or vessel from the inside while model f6-hps-21 is mounted from the outside (externally). Models f7-hss and f6-mhs2 can be installed internally or externally.

the series f6 & f7 specialty float level switches are designed for unique applications. Model f7-ss5b/bnc can be used with viscous liquids or liquids with suspended metal particles. Use model f7-ll for low level detection ( 5/8"). The non-intrusive bottle style f7-eb mounts completely outside the tank at the actuation level. Suspend model f7-wbb in stand pipes or sumps for leak detection or drop into wells for ground-water monitoring.

product applications

water level monitoring

oil level control

chemical level indication

sumpsstand pipes

tank level control

specifications

series f6

service:compatible liquids.

wetted materials:see model table on catalog page.

temperature limit:f6-ss & f6-mhs: -4 to 257f (-20 to 125c). F6-hps-11, 21, 31: 14 to 176f (-10 to 80c).

pressure limit:f6-ss & f6-mhs: 218 psi (15 bar). F6-hps-11, 21, 31: 116 psi (8 bar).

enclosure rating:general purpose.

switch type:spst hermetically sealed reed switch, reversible for no or nc.

electrical rating:20 va: 0.17 a @ 120 vac, 0.08 a @ 240 vac.

electrical connections:22 awg, 11.811" (300mm) long.

process connection:f6-ss: 1/8" npt, hps-21, 31: 1/2" npt, f6-mhs, f6-hps-11: m16*2.

mounting orientation:f6-ss: vertical 20, f6-mhs/hps: horizontal with index arrow pointing up or down.

specific gravity:f6-ss: 0.65, f6-mhs: 0.85, f6-hps-11, 21, 31: 0.6.

weight:f6-hps-11, 21: 1.23 oz (38 g), f6-mhs-31: 1.41 oz (40 g), f6-mhs: 3.35 oz (95 g), f6-ss: 1.59 oz (45 g).

agency approvals:ce.

series f7

electrical rating (maximum):f7-sb, -ss2 ac: 25 va, 1.0a, 200 v dc: 10 w, 1.0 a, 200 v f7-pp, -bt, -hss, -mhs ac: 25 va, 1.0 a, 200 v dc: 10 w, 1.0 a, 200 v f7-hps-1, -2 ac: 25 va, 1.0 a, 200 v dc: 10 w, 1.0 a, 200 v (f7-hss is rated explosion-proof for class i, groups a, b, c, d; class ii, groups e, f, g; class iii).

mounting connection:1/8" nptm (all vertical mount), 1/2" nptm (f7-hps-2, f7-hss), m16 x 2 (f7-hps-1), 1/2" x 13 thread (f7-mhs).

wire leads:22 awg x 18" (46 cm), vertical mount models; 22 awg x 39" (1 m), models f7-hps-1, -2; 22 awg x 24" (61 cm), models f7-hss, -mhs.

magnet:alnico (f7-sb, -pp, -bt, -hps), ceramic (f7-ss2, -hss, -mhs).

weight:2 oz. (58 g), f7-sb; 1.2 oz. (34g), f7-ss2; 0.8 oz. (23 g), f7- pp; 0.7 oz. (20 g), f7-bt; 1.5 oz. (43 g), f7-hps-1; 2 oz. (57 g), f7- hps-2 and -mhs; 3 oz. (94 g), f7-hss.

features

hermetically sealed reed switches are actuated by magnets permanently bonded inside the float arm and can be easily adapted to open or close a circuit on rising or falling levels

application : compatible liquids.

temperature : 31: 14 to 176f (-10 to 80c).

power : 0.08 a @ 240 vac.

brand name : dwyer usa

material : ss

certification : yes

type : horizontal level switches

mini tuning fork level switch (model ctf)

model ctf mini tuning fork level switch

compact, cost effective, din connection

the ctf is temporarily unavailable.

the model ctf mini tuning fork level switch is an ideal choice for level control of powders. The ctf incorporates a piezoelectric crystal that vibrates the fork at its natural frequency. When the fork comes in contact with a material, the vibration is dampened and the switch changes state. As the fork becomes free of material, the switch changes back to its normal state. The unit is not affected by vibration from conveying systems, motors, or the movement of material. Its compact size and din connection allow for application in places a larger tuning fork level switch may not be suitable, providing great versatility.

the model ctf is easy to use with no calibration required, and no mechanical moving parts mean no routine maintenance. The ctf is not affected by the dielectric constant of the sensed material, making it superior to a comparable capacitance level switch for applications where the dielectric constant is low, more than one material is being used in the single vessel, and when material moisture content can change. The level switch is also great for applications when the bulk density is too low for a rotating paddle level switch, making it the ideal choice for low density bulk solids and liquids. Comes standard with a user friendly pnp/npn configurable output.

product applications

lime, styrofoam, dry cereals, sugar, animal feed, milk powder, flour, insulation, cement, paper shavings, plastic granules, sawdust, carbon black, light fibers, detergent powders, dyes, chalk, silica, sand, wood chipschemical processingpulp and paper processingminingfood and beverage

specifications

service:dry powder compatible with wetted materials.

sensitivity:min. Bulk solid density: 4.4 lb/ft3 (70 g/l).

wetted materials:tuning fork: 316 l ss; process connection: 304 ss.

temperature limits:ambient: -40 to 140f (-40 to 60c);

process: -40 to 212f (-40 to 100c).

pressure limit:600 psi (40 bar).

power requirement:12 to 55 vdc.

power consumption:10 ma @ 12 to 24 vdc; 0.5 w (max.).

enclosure:aluminum, painted.

enclosure rating:ip65.

switch type:3-wire pnp/npn output.

electrical rating:350 ma (max) @ 12 to 55 vdc.

conduit connection:valve plug din 43650.

process connections:1" male npt.

indication lights:external red led.

sensing delay:max. Covered probe: 1 to 3 s.; uncovered probe: 1 to 3 s.

weight:2.2 lb (1.0 kg).

features

din connection and compact size allows for application in places a larger tuning fork level switch may not be suitable, providing great versatility

no mechanical moving parts with no routine maintenance required

unaffected by the dielectric constant of the sensed material, making it superior to a capacitance level switch for applications where the dielectric constant is too low, where there is more than one material being used in one vessel, and when material moisture content can change

ideal for applications where the bulk density is too low for a rotating paddle level switch

related products

model tfls2 compact tuning fork level switch

model tfls2 compact tuning fork level switch

certification : yes

material : tuning fork: 316 l ss; process connection: 304 ss.

power : 12 to 55 vdc.

brand name : dwyer usa

voltage : 12 to 55 vdc.

type : mini tuning fork level switch

application : dry powder compatible with wetted materials.

temperature : ambient: -40 to 140f (-40 to 60c); process: -40 to 212f (-40 to 100c)

Capacitive Level Switch

Series CLS2 Capacitive Level Switch

Powder, Bulk, or Liquids, Auto-Calibration

The CLS2 is a capacitive technology level switch that does not have any moving parts - no jams, no wear, nothing to break, and no maintenance. State of the art sensing technology in the CLS2, using impulse RF admittance measurement combined with an active guard, provides excellent level measurement and stability while being insensitive to material buildup. This technology also provides immunity to external RF sources like walkie-talkies and cell phones as well as minimal interference with radio communication or other electronic systems.

Capacitive level technology can be used for liquids, powders and bulk materials and is great for difficult applications such as slurries, coating products, and liquids and solids. The CLS2 is ideal for level indication in silos, receivers, and transporters in pneumatic conveying systems. The CLS2 can also be used for liquid interface applications to detect the level of two immiscible liquids that have different dielectric constants such as oil and water. Wetted materials of PVDF and 316 SS assure great chemical compatibility and meet food grade requirements.

Product Applications

Sewage and wastewater

Boilers and steam generators

Food and beverage

Caustics and acids

Pharmaceuticals

Reservoirs

SumpsLevel indication in silos

Level monitoring in receivers

Transporters in pneumatic conveying systems

ModelDescription

CLS2-W11RK1-006Capacitive level switch, weatherproof, 6" probe

CLS2-W11RK1-019Capacitive level switch, weatherproof, 19" probe

Specifications

Service:Liquids, powder and bulk materials compatible with wetted materials.

Wetted Materials:316 SS and polyvinylidene fluoride (PVDF).

Temperature Limits:Ambient: -40 to 185F (-40 to 85C), -4 to 185F (-20 to 85C) with under 24 VAC/DC power supply;

Process: -40 to 250F (-40 to 121C).

Pressure Limit:365 psi (25 bar).

Enclosure Rating:Weatherproof, NEMA 4X.

Switch Type:DPDT (two form C).

Electrical Rating:8 A @ 120/240 VAC res., 30 VDC. 1/2 hp @ 120 VAC and 1/4 hp @ 240 VAC ind.

Power Requirements:12 to 240 VAC/DC.

Power Consumption:2.8 Watts max.

Electric Connections:1/2" NPT conduit opening, screw termination and removable terminal block.

Process Connection:See Catalog Page.

Mounting Orientation:Vertical or horizontal.

Set Point Adjustment:Trips when product touches probe. Cut or extend probe to length of desired trip point. Can be cut as short a 1" and can be extended by welding on to probe. (Minimum length will be effected by material being sensed.)

Response Time:0.2 s.

Time Delay:Adjustable, 0 to 60 s.

Spark/Static Protection:10 MEG Ohm dissipation resistance with spark gap. Surge current to 100A max.

Sensitivity:8 selectable settings, 1, 2, 4, 6, 8, 10, 14, 20 pF (at 30 pF nominal free capacitance).

Agency Approvals:CE, cULus.

Material : 316 SS And Polyvinylidene Fluoride (PVDF).

Power : 12 To 240 VAC/DC.

Temperature : -4 To 185F (-20 To 85C) With Under 24 VAC/DC

Type : Capacitive Level Switch

Certification : YES

Application : Liquids, Powder And Bulk Materials Compatible With Wetted Materials.

Voltage : 12 To 240 VAC/DC.

Brand Name : DWYER USA

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