A globally recognized and respected supplier of industrial instrumentation, Flowline designs, manufacturers and markets level measurement and control solutions for corrosive chemical, water and wastewater applications. We enable industrial manufacturers and municipalities to safely and efficiently manage their contained liquid assets. Our quality solutions automate tank processes, protect the environment and ensure workplace safety. Flowline products are sold and supported worldwide through our stocking distribution partners. Customers include design engineers, system integrators, original equipment manufacturers, facility management and maintenance decision makers. We Do Your Level Best through our commitment to customer satisfaction and continuous improvement.

Flowline Full Catalog (16.1MB)

Flowline offers the most advanced family of level measurement and control solutions for your bulk storage, day tank, process vessel and waste sump applications.  Ultrasonic - Offered in intrinsically safe and general purpose configurations, our non-contact ultrasonic level transmitters are ideal for acid, caustic and waste-water storage. Pressure - Constructed of rugged stainless steel, our general purpose submersible pressure transmitter is well suited for water, well water, irrigation, ponds and reservoirs.  Float - Constructed of heavy duty stainless steel for high temperature and pres-sure, the explosion proof float transmitter is ideal for water, light oil and diluted acid.

Flowline Full Catalog (16.1MB)

EchoPod Level Switch, Controller & Transmitter

Flowline introduces EchoPod, an innovative level sensor that replaces floats, conductance and pressure sensors that fail due to dirty, sticking and scaling media in small tanks 49.2" (1.25 m) or less. EchoPod, a general purpose sensor, combines non-contact switch, controller and transmitter capabilities in one package. Combining 4 relays, 4-20 mA output and pump/valve control in one small sensor allows EchoPod to be your total solution. Maintenance free, EchoPod reduces tank system hardware through simplicity and consolidation. Additionally, EchoPod is well suited for corrosive and dirty applications with its non-metallic housing and transducer. EchoPod provides a total solution for fluid handling and automation. The time to "Think Small and Win Big" is now, and it’s with EchoPod.

Flowline EchoPod (3.05MB)

EchoSafe XP Ultrasonic Transmitter

FM approved explosion proof for use in hazardous applications, the two-wire ultrasonic transmitter provides non-contact level measurement up to 32.8' or 10 m, and is well suited for challenging corrosive, slurry or waste liquids. Push button calibrated, the transmitter is typically selected for atmospheric bulk storage, day tank and waste sump applications located within a classified area. Media examples include sodium hypochlorite, diesel fuel and paint. The integral display and push button module enable fast and simple calibration.

EchoTouch IS Ultrasonic Transmitter

CSA approved intrinsically safe for use in hazardous locations, the two-wire ultra-sonic transmitter provides non-contact level measurement up to 18’ or 5.4m, and is ideally suited for challenging corrosive, slurry or waste liquids. Push button calibrated, the transmitter is typically selected for atmospheric bulk storage, day tank and waste sump applications located within a classified area. Media examples include diesel fuel and sulfuric acid.

FluidWell Explosion Proof Meter

CSA approved explosion proof for use in hazardous applications, the loop powered field meter displays engineering units connected in series with one 4-20 mA transmitter. The meter is typically selected for use with an explosion proof transmitter within a hazardous area. The windowed field enclosure is wall mounted for convenient viewing.

DataLoop Intrinsically Safe Meter

Offered in intrinsically safe and general purpose configurations, the loop powered panel meter displays engineering units connected in series with one 4-20 mA transmitter. Select the LI25 -2001 meter for hazardous applications with an intrinsically safe level transmitter. Select the LI25-1001 meter for general purpose applications. For field mount installations, order the single or two meter NEMA box.

EchoSpan GP Ultrasonic Transmitter

The general purpose two-wire ultra-sonic transmitter provides non-con-tact level measurement up to 32.8’ or 10m, and is ideally suited for challenging ultrapure, corrosive or waste liquids. Push button calibrated, the transmitter is broadly selected for atmospheric bulk storage, day tank and waste sump applications. Media examples include wastewater and sodium hydroxide.

EchoSonic II GP Ultrasonic Transmitter

The general purpose two-wire ultra-sonic transmitter provides non-con-tact level measurement up to 32.8’ or 10m, and is well suited for challenging ultrapure, corrosive, slurry or waste liquids. The transmitter is broadly selected for atmospheric bulk storage, mini-bulk, day tank, waste sump, process applications. Media examples include acetic acid and cooking oil.

EchoTouch GP 3-Wire Ultrasonic Transmitter

The general purpose three-wire ultra-sonic transmitter provides non-contact level measurement up to 24’ or 7.4mwith an internal relay that can be configured as a single-point alarm or latched on two points for automatic fill or empty control. The transmitter is ideally suited for challenging corrosive, slurry or waste liquids and is typically selected for atmospheric bulk storage and waste sump applications. Media examples include waste-water and resin.

FloaTek GP Float Transmitter

Offered in FM and CSA approved explosionproof or general purpose configurations, the two-wire float transmitter provides contact level measurement up to 6’ or 1.8m,and is ideally suited for relatively clean water, light oil or diluted corrosive liquids. The transmitter is typically selected for high temperature and/or pressure process tank applications located within a classified hazardous or general purpose area. Media examples include hot boiler water and cooking oil.

DeltaSpan External Pressure Transmitter

The general purpose two-wire pressure transmitter is offered in two termination packages and provides contact level measurement up to 69' or 21.1m of water column. Select the -S_01 for cable termination or the -S_11 for conduit termination with an integral junction box. The transmitter is best applied with clean liquid or gas media including water, oil and air. Application examples include irrigation equipment, pumping systems and compressors.

DeltaSpan Submersible Pressure Transmitter

The general purpose two-wire pressure transmitter is offered in two configurations for different liquid types and provides contact level measurement up to 46' or 14m of water column. Select the LD31 for clean or relatively clean water, light weight oils and diluted chemical media. Application examples include ground water, ponds and wells. Select the LD32 for dirty, sludge or slurry media. Application examples include sewer or storm pump lift stations, storage and treatment with surface foam or debris where ultrasonic can-not be applied.

DataView Single-Channel Meter with Relays

The general purpose meter displays engineering units with one 4-20 mA or 0-10 VDC transmitter input channel and is offered in three configurations with optional 2 or 4 relays, 4 or 8 set points and an isolated 4-20 mA repeater. Each relay can be configured on a single set point or latched on two set points for automatic fill or empty control including duplexing. For field mount installations, order the single or two meter NEMA box.

Commander Multi-Channel Relay Controller

The general purpose controller has a graphic display with four 4-20 mA transmitter input channels and 6 progra-mable relays. Select from one of three run mode configurations including; 1) Multi-tank with 4 inputs and 4 relays; or 2) Pump control with 1 input and 6 relays for lift stations including duplexing; or 3) Differential level with 2 inputs and 4 relays for municipal screen or rake control. Each relay can be configured on a single set point or latched on two set points for automatic fill or empty control. The LCD displays engineer-ing units, relay and span status for each channel. The MicroSD card is ideal for data-logging storage and retrieval.

Flowline offers the most advanced family of level switch automation and safety solutions for your bulk storage, day tank, process vessel and waste sump applications. Vibration - Offered in Ryton® with a 1A 60VA relay, the general purpose vibration switch is ideal for challenging coating, scaling and foaming media such as wastewater and brine. Ultrasonic - Offered in PP and PFA with a 1A 60VA relay, the intrinsically safe ultra-sonic switch is applied in hazardous media including solvent, chemical, hydrocarbon and petroleum. Capacitance - Offered in both intrusive and non-intrusive configurations with a 1A 60VA relay, the general purpose capacitance switches are best for ultra-pure water and acid.  Buoyancy - Offered in PP, PVDF and stainless steel with a dry contact closure, the general purpose float switches are ideal for basic water, chemical and light oil applications.  Optic - Offered in PP and PFA with a 1A 60VA relay, the general purpose optic switch is widely applied in secondary containment leak detection of chemical and wastewater.

Flowline Full Catalog (16.1MB)

EchoSwitch II Bulk Tank Ultrasonic Switch

The general purpose ultrasonic switch and controller provides non-contact level detection up to 24.6’ or 7.5 m with 3 SPDT 60 VA 1A relays. EchoSwitch II features an LCD display with digital push button configuration. Each relay can be configured on a single set point alarm or latched on two set points for automatic fill or empty in simplex, duplex or triplex control modes with an integral timer delay. The switch is well suited for a broad range of corrosive, waste and slurry type media. EchoSwitch II is broadly selected for atmospheric day tank, pump lift station and sump applications.

Smart Trak with Compact Relay Controller

This general purpose switch package provides a complete solution for automatic filling or emptying of a tank between two adjustable level switch points with a 10A latching compact relay controller for pump or valve actuation. The product is typically selected to atmospheric day tank, process vessel and waste sump applications. Specify the appropriate sensor technology and assembly dimensions.

Smart Trak with Compact Junction Box

Offered in CSA approved intrinsically safe or general purpose configurations, this switch package provides up to four adjustable level switch points with a 1Arelay or dry contact closure interface for remote devices such as a PLC, SCADA or alarm. The product is typically selected for atmospheric day tank, process vessel and waste sump applications. Specify the appropriate sensor technology and assembly dimensions.

Float-Point with Compact Junction Box

Offered in FM and CSA approved explosionproof or general purpose configurations, this switch package provides up to four level switch points with a dry contact closure interface for remote devices such as a PLC or SCADA. The product is typically selected for high temperature and/or pressure process vessel applications located within a classified hazardous or general purpose area. Media examples include nickel acid or acetone. Specify the appropriate assembly dimensions.

Switch-Pak with Compact Relay Controller

This general purpose switch package provides a complete solution for high level spill prevention with a fixed level switch point and 10A compact relay controller for pump or valve actuation. The optional flash alarm brings immediate attention to tank high level conditions. The product is typically selected for corrosive bulk storage, day tank and waste sump applications. Specify the appropriate sensor technology, material and assembly dimension.

Switch-Pak with Compact Junction Box

Offered in CSA and Cenelec approved intrinsically safe or general purpose configurations, this high level spill prevention switch package provides a fixed level switch point with a 1A relay or dry contact closure interface for remote devices such as a PLC, SCADA or alarm. The product is typically selected for pressurized and/or highly corrosive bulk storage, day tank and waste sump applications. Specify the appropriate sensor technology, material and assembly dimension.

Switch-Pro with Compact Relay Controller

Installed through the side wall, this general purpose high or low level switch package includes a 10A com-pact relay controller for pump or valve actuation with an optional flash alarm. The product is typically selected for bulk storage, day tank and process vessel applications. Specify the appropriate sensor technology and material.

Switch-Pro with Compact Junction Box

Installed through the side wall and offered in CSA approved intrinsically safe or general purpose configurations, this high or low level switch package includes a 1A relay for remote PLC, SCADA or alarm interface. The product is typically selected for bulk storage, day tank and process vessel applications. Specify the appropriate sensor technology and material.

Switch-Tek Ultrasonic Level Switch

CSA approved intrinsically safe for use in hazardous area locations, the ultrasonic level switch is broadly applied in chemical, solvent, hydrocarbon and petroleum based liquids. Media examples include fuel, acetone and hydrochloric acid. The 1A relay provides a reliable switch interface with remote devices such as a PLC, SCADA or alarm. The submersible sensor is universally mounted through the wall or inside the tank.

Switch-Tek Vibration Level Switch

CSA approved intrinsically safe for use in hazardous area locations, the ultrasonic level switch is broadly applied in chemical, solvent, hydrocarbon and petroleum based liquids. Media examples include fuel, acetone and hydrochloric acid. The 1A relay provides a reliable switch interface with remote devices such as a PLC, SCADA or alarm. The submersible sensor is universally mounted through the wall or inside the tank.

Switch-Tek Vertical Buoyancy Level Switch

The general purpose buoyancy level switch is a perfect choice for relatively clean water and chemical solutions with non-coating and/or scaling characteristics. Media examples include acetic acid and process water. The baffle body eliminates switch chatter caused by turbulence. The dry contact closure provides a reliable switch interface with remote devices such as a PLC, SCADA or alarm. The sensor mounts vertically inside the tank on our Smart Trak or Switch-Pak fittings.

Switch-Tek Optic Leak Detection Switch

The general purpose optic switch is an excellent choice for leak detection in and around secondary containment sumps, tanks and pipes. The sensor can be applied in abroad range of chemical solutions. Media examples include ferric chloride and chlorine. The 1A relay provides a reliable switch interface with remote devices such as a PLC, SCADA or alarm. The submersible sensor is universally mounted within the interstitial space of the vessel.

Switch-Tek Guard Capacitance Level Switch

The general purpose guard capacitance level switch is a great choice for a wide range of aqueous based conductive liquids with light coating, crystallizing or scaling characteristics. Media examples include copper sulfate and brine. The 1A relay provides a reliable switch interface with remote devices such as a PLC, SCADA or alarm. The submersible sensor is universally mounted through the wall or inside the tank.

Switch-Tek Non-Intrusive Capacitance Level Switch

The general purpose non-intrusive capacitance level switch is a great choice for highly corrosive or ultrapure, aqueous based liquids with non-coating and/or scaling characteristics. Media examples include deionized water and hydrochloric acid. The 1Arelay provides a reliable switch inter-face with remote devices such as a PLC, SCADA or alarm. The sensor is bracket mounted on the exterior wall of non-metallic tanks.

Switch-Tek Mini-Float Level Switch

Offered in both vertical and horizontal float configurations, the general purpose mini-float level switches are a great choice for less critical applications with clean water and/or chemical solutions. Media examples include water and acetic acid. The dry contact closure provides a reliable switch interface with remote devices such as a PLC, SCADA or alarm.

Switch-Tek High-Temp Vertical Float Level Switch

Offered in both vertical and horizontal float configurations, the general purpose high-temp float level switches are an ideal choice for relatively clean water, diluted chemical or petroleum based liquids with non-coating and/or scaling characteristics. Media examples include hot deionized water and cooking oil. The dry contact closure provides a reliable switch interface with remote devices such as a PLC, SCADA or alarm.

Level Switch Compact Relay Controller

The general purpose controller is offered in two versions with 1 relay and 1 or 2 sensor inputs. The LC10 provides a high or low level switch with a single sensor input. The LC11provides latched automatic fill or empty control with two sensor inputs, and is typically integrated with Smart Trak. The optional flash alarm brings immediate attention to process conditions. Package the controller with any of our level switches.

Level Switch Remote Relay Controller

Available in two classifications; CSA approved general purpose and isolation with built-in intrinsic safety barriers for use with associated apparatus. Each classification is offered in three versions with 1 or 2 relays and 1-3 sensor inputs. The LC40/90 provides a high or low-level switch with a single sensor input. The LC41/91 provides latched automatic fill or empty control with two sensor inputs. The LC42/92 provides latched automatic fill or empty control and an independent high or low level switch with three sensor inputs.

Flowline offers the most capable range of solid state liquid and gas flow switch solutions for corrosive pump, fan exhaust motor and process protection applications. Sensors - Offered in PP or PVDF bodies with a 1A relay, the general purpose sensors are broadly applied in water, chemicals, light weight oils, process gases and exhaust fumes. Packages - The sensors are also offered in compact packages with integral relay controllers for pump and valve control, or junction boxes for convenient power and switch termination.

Flowline Full Catalog (16.1MB)

Thermo-Flo Liquid and Gas Flow Switch

Offered in liquid and gas configurations for low-flow detection, the general purpose flow switch is a great choice for a diverse range of relatively clean, non-coating media. Liquid examples include deionized water and sulfuric acid. Gas examples include nitrogen and scrubber exhaust fumes. The 1A relay provides a reliable switch interface with remote devices such as a PLC, SCADA or alarm. The short sensor is intended for use in pipe or ducting from 1/2” to 11/2”;thelong sensor is applied in 2” and up. The liquid switch set point may be adjusted from .04 to 3fps,and the gas switch from 1 to 90 fps.

Switch-Pro with Compact Relay Controller

This general purpose liquid or gas switch package provides a complete solution for low flow pump or process protection with a 10A compact relay controller. The optional flash alarm brings immediate attention to low flow conditions. The short sensor is intended for use in pipe or ducting from 1/2” to11/2”;the long sensor is applied in 2” and up. The product is broadly selected for low or no-flow applications. Specify the appropriate sensor technology, length and material.

Switch-Pro with Compact Junction Box

This general purpose liquid or gas switch package provides a low flow detection solution for pump or process protection with a 1A relay inter-face for remote devices such as a PLC, SCADA or alarm. The short sensor is intended for use in pipe or ducting from 1/2” to 11/2”;the long sensor is applied in 2” and up. The product is broadly selected for low or no-flow applications. Specify the appropriate sensor technology, length and material.

Flow Switch Compact Relay Controller

The general purpose controller provides single channel low flow switch automation with one sensor input. The optional flash alarm brings immediate attention to flow alarm conditions. Package the controller with our liquid or gas flow switch sensors.