Level Control
Level control is essential for many industrial and commercial applications, ranging from simple water tanks to complex chemical processing systems. Industrial applications often require control to maintain safe and...
Categories in Level Control - Reliable Level Management Solutions (2)
Liquid Level
A liquid level controller is a device used to monitor and control the level of liquids in tanks, vessels, or process systems. It utilizes sensors or probes to detect the liquid level and actuates valves, pumps, or alarms based on predefined level thresholds. Liquid level controllers find applications in industries such as water treatment, wastewater management, food and beverage, or chemical processing. They enable precise level control, preventing overflow or dry run situations and ensuring efficient and safe liquid handling processes.
Bulk Solids
Bulk solids refer to dry, granular, or powdered materials handled in large volumes across industries like agriculture, mining, food processing, and chemical manufacturing. Managing these materials efficiently requires specialized equipment for conveying, storage, feeding, and processing to ensure flow consistency, prevent blockages, and maintain product quality.
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The Dwyer - LVU706-B is a Reflective Ultrasonic Level Transmitter featuring Liquid, 2 " NPT Male, ± 0.2 % Accuracy, 30 psi, 19.6', PVDF, 14 Vdc to 28 Vdc, and 4 mA to 20 mA. It is rated for a temperature range of 80 °C. Part of the LVU700 Series. Sold individually.
$1,057.25
Should ship between 09 Dec and 16 Dec
Subject to factory lead times
The Dwyer - LR15-0010-30 is a Pulse Radar Level Transmitter featuring Flowline, Liquid, 1-1/2 " NPT Male, ± 3 mm Accuracy, 150 psi, 98.4' (30 m), 16 Vdc to 26 Vdc, 4 mA to 20 mA, and LCD Display. It is rated for a temperature range of 150 °C. Part of the Echo Pulse LR15 Series. Sold individually.
$3,383.65
Should ship between 06 Jan and 13 Jan
Subject to factory lead times
The Dwyer - LV624-N is a Float Level Switch featuring Pump Up/Pump Down, Liquid, 15 A SPDT, Tethered, 75 psi, PP, Neoprene, 60' L Cable, and Circular Design. It is rated for a temperature range of 50 °C. Part of the LV600 Series. Sold individually.
$377.83
Should ship between 11 Nov and 18 Nov
Subject to factory lead times
The Dwyer - LV624-P is a Float Level Switch featuring Pump Up/Pump Down, Liquid, 15 A SPDT, Tethered, 75 psi, PP, PVC, 60' L Cable, and Circular Design. It is rated for a temperature range of 50 °C. Part of the LV600 Series. Sold individually.
$266.01
Should ship between 11 Nov and 18 Nov
Subject to factory lead times
The Dwyer - LVCF-221-12 is a Conductivity Level Switch featuring 2 Rods/Electrodes, Minimum/Maximum Detection, Liquid, 3/4 " NPT Male, 290 psi, 316 SS, Nylon Enclosure, and 12 " L Probe. It is rated for a temperature range of 120 °C. Part of the LVCF Series. Sold individually.
$606.84
Should ship between 02 Dec and 09 Dec
Subject to factory lead times
The Dwyer - LVCN-100 is a Level Alert Single Sensor Controller featuring 3/4 ", NPT Female, Vertical Mount, LED Display, 120 Vac Supply, and Isolated SPDT Relay O/P. It is rated for a temperature range of 70 °C(158 °F). Part of the LVCN-100 Series. Sold individually.
$513.00
Should ship between 09 Dec and 16 Dec
Subject to factory lead times
The Dwyer - LVRD11 is a Guided Wave Radar Level Transmitter featuring Liquid, 3/4 " NPT Male, Single Rod, ± 3 mm, 250 psi, 10 Vdc to 30 Vdc, 4 mA to 20 mA, 3 m (9.8 '), and 316L SS. It is rated for a temperature range of 150 °C (302 °F). Part of the LVRD10 Series. Sold individually.
$1,393.36
Should ship between 09 Dec and 16 Dec
Subject to factory lead times
The Dwyer - LVRD13 is a Guided Wave Radar Level Transmitter featuring Liquid, 3/4 " NPT Male, Cable, ± 3 mm, 250 psi, 10 Vdc to 30 Vdc, 4 mA to 20 mA, 5.5 m (18 '), and 316L SS. It is rated for a temperature range of 150 °C (302 °F). Part of the LVRD10 Series. Sold individually.
$1,834.46
Should ship between 06 Jan and 13 Jan
Subject to factory lead times
The Dwyer - LVU712 is a Reflective Ultrasonic Level Transmitter featuring Liquid, 3 " NPT Male, ± 0.2 % Accuracy, 30 psi, 39.3', PVDF & Viton, 14 Vdc to 28 Vdc, 4 mA to 20 mA, and Fob USB. It is rated for a temperature range of 80 °C. Part of the LVU700 Series. Sold individually.
$1,404.67
Should ship between 09 Dec and 16 Dec
Subject to factory lead times
The Dwyer - LVU712-B is a Reflective Ultrasonic Level Transmitter featuring Liquid, 3 " NPT Male, ± 0.2 % Accuracy, 30 psi, 39.3', PVDF & Viton, 14 Vdc to 28 Vdc, and 4 mA to 20 mA. It is rated for a temperature range of 80 °C. Part of the LVU700 Series. Sold individually.
$1,339.14
Should ship between 09 Dec and 16 Dec
Subject to factory lead times
Configure product to see pricing
LeakPro LDS-YN Industrial Series is an advanced all plastic corrosion resistant leak detection sensor that utilizes ultra-sensitive electrostatic technology which constantly and accurately senses the presence of liquids. These sensors are ideally suited for monitoring the interstitial area between double wall tanks, tank retention dikes, secondary containment sumps, and are where process pumps and valves are utilized. The LDS-YN sensor has been engineered to withstand even the most extreme conditions while including features designed to optimize performance and reduce maintenance.
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Configure product to see pricing
The WIKA ILT-C01 (PN 14833190) is a 60 GHz FMCW free-beam radar level sensor with 4–20 mA current output and M12 4-pin connector. Designed for continuous, non-contact level measurement of liquids, oils, and bulk solids in industrial tanks and mobile machinery up to 212 °F (100 °C). The 4–20 mA output is ideal for long cable runs to PLCs or SCADA systems, while the M12 quick-disconnect enables fast installation and field replacement without rewiring. Rated IP67, 25 bar, ±5 mm accuracy. Vibration-resistant to 40g — engineered for hydraulic reservoirs, expansion tanks, and OEM machine integration.
Requires Quote
In Stock (777)Ships within 1 business day
The WIKA ILT-C01 (PN 14849668) delivers 60 GHz FMCW non-contact level measurement with a 0–5 V ratiometric voltage output and M12 4-pin connector. The 0–5 V signal is the preferred choice for short-distance wiring to voltage-input DAQ systems, embedded controllers, and analog I/O modules where current loops are not required. The M12 connector provides a secure, vibration-resistant mating connection suited to mobile working machines, forklifts, and industrial equipment subject to shock. Rated for media temperatures up to 212 °F (100 °C), 25 bar, IP67. Measuring range 100–5,000 mm, ±5 mm accuracy.
Requires Quote
In Stock (339)Ships within 1 business day
The WIKA ILT-C01 (PN 14849669) provides 60 GHz FMCW non-contact level measurement with a 4–20 mA current output and a 2-metre pre-wired PVC cable. The integrated cable eliminates the need for a separate mating connector, making it ideal for permanent panel wiring, junction box termination, and installations where routing flexibility is more important than quick-disconnect capability. The 4–20 mA signal ensures reliable signal transmission over long cable distances with high noise immunity. Suitable for industrial tanks, HVAC systems, wastewater applications, and mobile machinery. Rated IP67, 25 bar, up to 212 °F (100 °C), ±5 mm accuracy.
Requires Quote
In Stock (495)Ships within 1 business day
The WIKA ILT-C01 (PN 14849670) offers 60 GHz FMCW non-contact level measurement with a 0–5 V voltage output and a 2-metre pre-wired PVC cable. This combination is well-suited for OEM equipment integration where the sensor is hardwired at the factory into a voltage-input control system, removing connector cost and complexity. The flexible PVC cable accommodates tight routing around obstacles in compact machine enclosures. Ideal for coolant tanks, hydraulic reservoirs, and container-level monitoring in industrial automation. IP67, 25 bar, media temperature up to 212 °F (100 °C), measuring range 100–5,000 mm.
$638.61
In Stock (146)Ships within 1 business day
The WIKA ILT-C05 (PN 14849671) is the high-temperature variant of the ILT free-beam radar level sensor, featuring a 4–20 mA current output and M12 4-pin connector. Rated for media temperatures up to 302 °F (150 °C), it is specifically designed for hot oil reservoirs, thermal fluid systems, steam-adjacent tanks, and heated process vessels where standard sensors cannot operate. The 4–20 mA output provides noise-immune signal transmission over long cable runs to PLCs and control panels, and the M12 connector allows fast sensor swap-out during maintenance without downtime. IP67, 25 bar, 60 GHz FMCW, ±5 mm accuracy. Min. pipe diameter 18 mm.
Requires Quote
In Stock (97)Ships within 1 business day
The WIKA ILT-C05 (PN 14849672) delivers non-contact 60 GHz FMCW level measurement at media temperatures up to 302 °F (150 °C), with a 0–5 V voltage output and M12 4-pin connector. The voltage output is ideal for integration with embedded controllers, machine PLCs, and analog input cards that accept 0–5 V signals directly, avoiding the need for current-to-voltage conversion. The M12 connection is especially practical in high-temperature environments where frequent maintenance or sensor replacement is required. Suited for hot hydraulic circuits, heated industrial tanks, and high-temperature mobile machinery. IP67, 25 bar, ±5 mm accuracy, min. pipe diameter 18 mm.
Requires Quote
Available for Purchase
Subject to factory lead times
The WIKA ILT-C05 (PN 14849673) is a high-temperature 60 GHz FMCW radar level sensor with 4–20 mA output and a 2-metre pre-wired PVC cable, rated for media up to 302 °F (150 °C). The factory-attached cable makes this variant ideal for permanent installation in high-temperature process environments — such as heated chemical tanks, hot-water storage vessels, thermal oil systems, and industrial dryers — where a fixed wiring layout is preferred over connectorized designs. The industry-standard 4–20 mA signal travels reliably over long distances without interference from surrounding equipment. IP67 ingress protection, 25 bar pressure rating, ±5 mm accuracy, min. pipe diameter 18 mm.
Requires Quote
Available for Purchase
Subject to factory lead times
The WIKA ILT-C05 (PN 14849674) combines high-temperature performance up to 302 °F (150 °C) with a 0–5 V voltage output and 2-metre pre-wired PVC cable — ideal for OEM manufacturers integrating a radar level sensor directly into high-temperature equipment at the production stage. The hardwired cable and voltage output eliminate connector cost and simplify assembly, making this variant well-suited for bespoke industrial machines, heated OEM enclosures, and high-temp process skids where the sensor is specified once and installed for the long term. 60 GHz FMCW, IP67, 25 bar, ±5 mm accuracy, non-contact, maintenance-free, min. pipe dia. 18 mm.
$713.34
Available for Purchase
Subject to factory lead times
The Dwyer - CL532 is a Milliamp Loop Calibrator with 60 V Loop Power featuring Handheld, 4 mA to 20 mA, 3.3 " x 2.2 " x 7.1 " (WxDxH), and LCD Display. Part of the CL530 Series. Sold individually.
$2,982.27
Should ship between 18 Nov and 25 Nov
Subject to factory lead times
The Dwyer - LR10-0010 is a Pulse Radar Level Transmitter featuring Flowline, Liquid, 1-1/2 " NPT Male, ± 5 mm Accuracy, 43.5 psi, 32.8' (10 m), 16 Vdc to 26 Vdc, 4 mA to 20 mA, and LCD Display. It is rated for a temperature range of 130 °C (266 °F). Part of the LR10 Series. Sold individually.
$1,946.25
Should ship between 06 Jan and 13 Jan
Subject to factory lead times
The Dwyer - LTU-101A-R is a Tuning Fork Sensor featuring Liquid, 1 A SPST, 3/4 " NPT Male, 12 Vdc to 28 Vdc, 150 psi, Ryton, and 4-1/2 " L Probe. It is rated for a temperature range of 80 °C. Part of the LTU-101A-R Series. Sold individually.
$543.39
Should ship between 09 Dec and 16 Dec
Subject to factory lead times
The Dwyer - LVCF-231-24-ETFE is a Conductivity Level Switch featuring Liquid, 1 " NPT Male, 290 psi, ECTFE/ETFE, 24 " L Probe, and Nylon Enclosure. It is rated for a temperature range of 120 °C. Part of the LVCF Series. Sold individually.
$1,096.78
Should ship between 09 Dec and 16 Dec
Subject to factory lead times
The Dwyer - LVCN-51 is a Proportional Level On/Off Controller featuring 35 mm DIN Rail/Panel, LED Display, 120 Vac/240 Vac Supply, Two Isolated SPDT Relay O/P, and Polypropylene. It is rated for a temperature range of 70 °C (158 °F). Sold individually.
$675.45
Should ship between 09 Dec and 16 Dec
Subject to factory lead times
The Dwyer - LVU706-B is a Reflective Ultrasonic Level Transmitter featuring Liquid, 2 " NPT Male, ± 0.2 % Accuracy, 30 psi, 19.6', PVDF, 14 Vdc to 28 Vdc, and 4 mA to 20 mA. It is rated for a temperature range of 80 °C. Part of the LVU700 Series. Sold individually.
$1,057.25
Should ship between 09 Dec and 16 Dec
Subject to factory lead times
The Dwyer - LR15-0010-30 is a Pulse Radar Level Transmitter featuring Flowline, Liquid, 1-1/2 " NPT Male, ± 3 mm Accuracy, 150 psi, 98.4' (30 m), 16 Vdc to 26 Vdc, 4 mA to 20 mA, and LCD Display. It is rated for a temperature range of 150 °C. Part of the Echo Pulse LR15 Series. Sold individually.
$3,383.65
Should ship between 06 Jan and 13 Jan
Subject to factory lead times
The Dwyer - LV624-N is a Float Level Switch featuring Pump Up/Pump Down, Liquid, 15 A SPDT, Tethered, 75 psi, PP, Neoprene, 60' L Cable, and Circular Design. It is rated for a temperature range of 50 °C. Part of the LV600 Series. Sold individually.
$377.83
Should ship between 11 Nov and 18 Nov
Subject to factory lead times
The Dwyer - LV624-P is a Float Level Switch featuring Pump Up/Pump Down, Liquid, 15 A SPDT, Tethered, 75 psi, PP, PVC, 60' L Cable, and Circular Design. It is rated for a temperature range of 50 °C. Part of the LV600 Series. Sold individually.
$266.01
Should ship between 11 Nov and 18 Nov
Subject to factory lead times
The Dwyer - LVCF-221-12 is a Conductivity Level Switch featuring 2 Rods/Electrodes, Minimum/Maximum Detection, Liquid, 3/4 " NPT Male, 290 psi, 316 SS, Nylon Enclosure, and 12 " L Probe. It is rated for a temperature range of 120 °C. Part of the LVCF Series. Sold individually.
$606.84
Should ship between 02 Dec and 09 Dec
Subject to factory lead times
The Dwyer - LVCN-100 is a Level Alert Single Sensor Controller featuring 3/4 ", NPT Female, Vertical Mount, LED Display, 120 Vac Supply, and Isolated SPDT Relay O/P. It is rated for a temperature range of 70 °C(158 °F). Part of the LVCN-100 Series. Sold individually.
$513.00
Should ship between 09 Dec and 16 Dec
Subject to factory lead times
The Dwyer - LVRD11 is a Guided Wave Radar Level Transmitter featuring Liquid, 3/4 " NPT Male, Single Rod, ± 3 mm, 250 psi, 10 Vdc to 30 Vdc, 4 mA to 20 mA, 3 m (9.8 '), and 316L SS. It is rated for a temperature range of 150 °C (302 °F). Part of the LVRD10 Series. Sold individually.
$1,393.36
Should ship between 09 Dec and 16 Dec
Subject to factory lead times
The Dwyer - LVRD13 is a Guided Wave Radar Level Transmitter featuring Liquid, 3/4 " NPT Male, Cable, ± 3 mm, 250 psi, 10 Vdc to 30 Vdc, 4 mA to 20 mA, 5.5 m (18 '), and 316L SS. It is rated for a temperature range of 150 °C (302 °F). Part of the LVRD10 Series. Sold individually.
$1,834.46
Should ship between 06 Jan and 13 Jan
Subject to factory lead times
The Dwyer - LVU712 is a Reflective Ultrasonic Level Transmitter featuring Liquid, 3 " NPT Male, ± 0.2 % Accuracy, 30 psi, 39.3', PVDF & Viton, 14 Vdc to 28 Vdc, 4 mA to 20 mA, and Fob USB. It is rated for a temperature range of 80 °C. Part of the LVU700 Series. Sold individually.
$1,404.67
Should ship between 09 Dec and 16 Dec
Subject to factory lead times
The Dwyer - LVU712-B is a Reflective Ultrasonic Level Transmitter featuring Liquid, 3 " NPT Male, ± 0.2 % Accuracy, 30 psi, 39.3', PVDF & Viton, 14 Vdc to 28 Vdc, and 4 mA to 20 mA. It is rated for a temperature range of 80 °C. Part of the LVU700 Series. Sold individually.
$1,339.14
Should ship between 09 Dec and 16 Dec
Subject to factory lead times
Configure product to see pricing
LeakPro LDS-YN Industrial Series is an advanced all plastic corrosion resistant leak detection sensor that utilizes ultra-sensitive electrostatic technology which constantly and accurately senses the presence of liquids. These sensors are ideally suited for monitoring the interstitial area between double wall tanks, tank retention dikes, secondary containment sumps, and are where process pumps and valves are utilized. The LDS-YN sensor has been engineered to withstand even the most extreme conditions while including features designed to optimize performance and reduce maintenance.
Configure Product
Configure product to see pricing
The WIKA ILT-C01 (PN 14833190) is a 60 GHz FMCW free-beam radar level sensor with 4–20 mA current output and M12 4-pin connector. Designed for continuous, non-contact level measurement of liquids, oils, and bulk solids in industrial tanks and mobile machinery up to 212 °F (100 °C). The 4–20 mA output is ideal for long cable runs to PLCs or SCADA systems, while the M12 quick-disconnect enables fast installation and field replacement without rewiring. Rated IP67, 25 bar, ±5 mm accuracy. Vibration-resistant to 40g — engineered for hydraulic reservoirs, expansion tanks, and OEM machine integration.
Requires Quote
In Stock (777)Ships within 1 business day
The WIKA ILT-C01 (PN 14849668) delivers 60 GHz FMCW non-contact level measurement with a 0–5 V ratiometric voltage output and M12 4-pin connector. The 0–5 V signal is the preferred choice for short-distance wiring to voltage-input DAQ systems, embedded controllers, and analog I/O modules where current loops are not required. The M12 connector provides a secure, vibration-resistant mating connection suited to mobile working machines, forklifts, and industrial equipment subject to shock. Rated for media temperatures up to 212 °F (100 °C), 25 bar, IP67. Measuring range 100–5,000 mm, ±5 mm accuracy.
Requires Quote
In Stock (339)Ships within 1 business day
The WIKA ILT-C01 (PN 14849669) provides 60 GHz FMCW non-contact level measurement with a 4–20 mA current output and a 2-metre pre-wired PVC cable. The integrated cable eliminates the need for a separate mating connector, making it ideal for permanent panel wiring, junction box termination, and installations where routing flexibility is more important than quick-disconnect capability. The 4–20 mA signal ensures reliable signal transmission over long cable distances with high noise immunity. Suitable for industrial tanks, HVAC systems, wastewater applications, and mobile machinery. Rated IP67, 25 bar, up to 212 °F (100 °C), ±5 mm accuracy.
Requires Quote
In Stock (495)Ships within 1 business day
The WIKA ILT-C01 (PN 14849670) offers 60 GHz FMCW non-contact level measurement with a 0–5 V voltage output and a 2-metre pre-wired PVC cable. This combination is well-suited for OEM equipment integration where the sensor is hardwired at the factory into a voltage-input control system, removing connector cost and complexity. The flexible PVC cable accommodates tight routing around obstacles in compact machine enclosures. Ideal for coolant tanks, hydraulic reservoirs, and container-level monitoring in industrial automation. IP67, 25 bar, media temperature up to 212 °F (100 °C), measuring range 100–5,000 mm.
$638.61
In Stock (146)Ships within 1 business day
The WIKA ILT-C05 (PN 14849671) is the high-temperature variant of the ILT free-beam radar level sensor, featuring a 4–20 mA current output and M12 4-pin connector. Rated for media temperatures up to 302 °F (150 °C), it is specifically designed for hot oil reservoirs, thermal fluid systems, steam-adjacent tanks, and heated process vessels where standard sensors cannot operate. The 4–20 mA output provides noise-immune signal transmission over long cable runs to PLCs and control panels, and the M12 connector allows fast sensor swap-out during maintenance without downtime. IP67, 25 bar, 60 GHz FMCW, ±5 mm accuracy. Min. pipe diameter 18 mm.
Requires Quote
In Stock (97)Ships within 1 business day
The WIKA ILT-C05 (PN 14849672) delivers non-contact 60 GHz FMCW level measurement at media temperatures up to 302 °F (150 °C), with a 0–5 V voltage output and M12 4-pin connector. The voltage output is ideal for integration with embedded controllers, machine PLCs, and analog input cards that accept 0–5 V signals directly, avoiding the need for current-to-voltage conversion. The M12 connection is especially practical in high-temperature environments where frequent maintenance or sensor replacement is required. Suited for hot hydraulic circuits, heated industrial tanks, and high-temperature mobile machinery. IP67, 25 bar, ±5 mm accuracy, min. pipe diameter 18 mm.
Requires Quote
Available for Purchase
Subject to factory lead times
The WIKA ILT-C05 (PN 14849673) is a high-temperature 60 GHz FMCW radar level sensor with 4–20 mA output and a 2-metre pre-wired PVC cable, rated for media up to 302 °F (150 °C). The factory-attached cable makes this variant ideal for permanent installation in high-temperature process environments — such as heated chemical tanks, hot-water storage vessels, thermal oil systems, and industrial dryers — where a fixed wiring layout is preferred over connectorized designs. The industry-standard 4–20 mA signal travels reliably over long distances without interference from surrounding equipment. IP67 ingress protection, 25 bar pressure rating, ±5 mm accuracy, min. pipe diameter 18 mm.
Requires Quote
Available for Purchase
Subject to factory lead times
The WIKA ILT-C05 (PN 14849674) combines high-temperature performance up to 302 °F (150 °C) with a 0–5 V voltage output and 2-metre pre-wired PVC cable — ideal for OEM manufacturers integrating a radar level sensor directly into high-temperature equipment at the production stage. The hardwired cable and voltage output eliminate connector cost and simplify assembly, making this variant well-suited for bespoke industrial machines, heated OEM enclosures, and high-temp process skids where the sensor is specified once and installed for the long term. 60 GHz FMCW, IP67, 25 bar, ±5 mm accuracy, non-contact, maintenance-free, min. pipe dia. 18 mm.
$713.34
Available for Purchase
Subject to factory lead times
The Dwyer - CL532 is a Milliamp Loop Calibrator with 60 V Loop Power featuring Handheld, 4 mA to 20 mA, 3.3 " x 2.2 " x 7.1 " (WxDxH), and LCD Display. Part of the CL530 Series. Sold individually.
$2,982.27
Should ship between 18 Nov and 25 Nov
Subject to factory lead times
The Dwyer - LR10-0010 is a Pulse Radar Level Transmitter featuring Flowline, Liquid, 1-1/2 " NPT Male, ± 5 mm Accuracy, 43.5 psi, 32.8' (10 m), 16 Vdc to 26 Vdc, 4 mA to 20 mA, and LCD Display. It is rated for a temperature range of 130 °C (266 °F). Part of the LR10 Series. Sold individually.
$1,946.25
Should ship between 06 Jan and 13 Jan
Subject to factory lead times
The Dwyer - LTU-101A-R is a Tuning Fork Sensor featuring Liquid, 1 A SPST, 3/4 " NPT Male, 12 Vdc to 28 Vdc, 150 psi, Ryton, and 4-1/2 " L Probe. It is rated for a temperature range of 80 °C. Part of the LTU-101A-R Series. Sold individually.
$543.39
Should ship between 09 Dec and 16 Dec
Subject to factory lead times
The Dwyer - LVCF-231-24-ETFE is a Conductivity Level Switch featuring Liquid, 1 " NPT Male, 290 psi, ECTFE/ETFE, 24 " L Probe, and Nylon Enclosure. It is rated for a temperature range of 120 °C. Part of the LVCF Series. Sold individually.
$1,096.78
Should ship between 09 Dec and 16 Dec
Subject to factory lead times
The Dwyer - LVCN-51 is a Proportional Level On/Off Controller featuring 35 mm DIN Rail/Panel, LED Display, 120 Vac/240 Vac Supply, Two Isolated SPDT Relay O/P, and Polypropylene. It is rated for a temperature range of 70 °C (158 °F). Sold individually.
$675.45
Should ship between 09 Dec and 16 Dec
Subject to factory lead times
FAQS
- Monitoring and controlling liquid level in a tank requires a level sensor or transmitter paired with a controller, PLC, or alarm system. The first decision is whether you need point level detection (knowing when the level hits a specific high or low threshold — for alarms or pump control) or continuous level measurement (knowing the actual level height at all times — for inventory tracking or closed-loop control). For point level, float switches are the simplest and most cost-effective option — a buoyant float actuates a switch when the liquid reaches a set point. Vibrating fork switches are a good alternative when the liquid is viscous or foaming. For continuous measurement, ultrasonic transmitters work well in open atmospheric tanks with clean liquids, radar transmitters handle pressurized vessels, vapors, and foam, and differential pressure transmitters are the traditional choice for high-pressure or high-temperature vessels. The level signal is sent to a PLC or controller that operates inlet/outlet valves or pump starts/stops to keep the level within the desired range.
- Level measurement technologies fall into two categories: point level (detecting when the level reaches a specific threshold — high, low, or intermediate) and continuous level (measuring the actual level height across the full range). Common point level technologies include float switches (a buoyant float actuates a switch at a set level — simple, reliable, and low-cost), vibrating fork switches (a tuning fork vibrates at its natural frequency in air and dampens when immersed in liquid), and capacitance point switches. Common continuous level technologies include ultrasonic (measures distance to the liquid surface using sound waves — non-contact, works well for open tanks), radar and guided wave radar (uses microwave pulses — handles high temperatures, pressures, and vapors), differential pressure transmitters (infer level from hydrostatic pressure — the traditional workhorse for pressurized vessels), magnetostrictive float-based systems, and capacitance/admittance transmitters. The right choice depends on the media (clean liquid, slurry, foam, solids), vessel conditions (temperature, pressure, agitation), accuracy requirements, and budget.
- A float switch uses a buoyant float attached to or enclosing a mechanical or magnetic switch mechanism. As the liquid level rises, the float rises with it; when it reaches the switch actuation point, the switch changes state (opens or closes a circuit), sending a discrete signal to the control system. Float switches are the simplest and most widely used point-level devices — they are reliable, inexpensive, require no power supply for mechanical types, and work in a wide range of liquids. Common applications include high-level and low-level alarms on storage tanks, sump pump control (turning the pump on when level rises and off when it falls), coolant reservoir monitoring, and condensate tank level switching. Limitations include susceptibility to fouling in viscous or coating liquids, and they are not suitable for applications with heavy turbulence or foam. For these challenging conditions, vibrating fork or capacitance-based switches are more appropriate.
- Both ultrasonic and radar are non-contact continuous level measurement technologies, but they perform differently in various conditions. Ultrasonic level transmitters are cost-effective and work well in atmospheric tanks with clean liquids and moderate temperatures — they are the standard choice for water and wastewater tanks, chemical storage, and open vessels. However, ultrasonic performance degrades in heavy vapor, dust, foam, and extreme temperatures because sound waves are affected by the medium they travel through. Radar (non-contact and guided wave) uses electromagnetic waves that are unaffected by temperature, pressure, vapor, or dust — making radar the better choice for pressurized vessels, high-temperature processes, tanks with heavy vapor blankets, and media that produce foam or surface turbulence. Guided wave radar (a probe that contacts the media) provides excellent accuracy and reliability in narrow vessels, still wells, and applications with low dielectric liquids. Radar instruments are typically more expensive than ultrasonic, so ultrasonic remains the preferred choice where conditions allow.
- Differential pressure (DP) level measurement uses a DP transmitter to infer the liquid level in a tank based on the hydrostatic pressure exerted by the liquid column. The transmitter measures the pressure difference between the bottom of the tank (where the liquid column creates pressure proportional to its height) and the top of the tank (the reference or vapor space pressure). Since pressure increases linearly with liquid height (P = ρ × g × h), the DP reading is directly proportional to level. DP level measurement is the traditional workhorse for pressurized and vacuum vessels where non-contact technologies may not perform well, and it remains widely used in oil and gas, chemical, pharmaceutical, and power generation applications. It is well-suited for high-temperature, high-pressure vessels and can handle a wide range of media. Limitations include the need for impulse piping (or remote diaphragm seals for corrosive or viscous media), and it requires the specific gravity of the liquid to remain relatively constant for accurate measurement.