Level Switches & Transmitters – Erik Prayoga

Dwyer TFLS-W11SR1-048 Tuning Fork Level Switch

Erik Prayoga — Tue, 23 Jun 2026 02:19:21 +0000

Dwyer TFLS-W11SR1-048 Tuning Fork Level Switch is a weatherproof, NEMA 4X rated device designed for detecting bulk materials submerged in liquid. It operates in ambient temperatures ranging from -4 to 140°F (-20 to 60°C) and requires 90 to 265 VAC or 24 VDC power. With a wetted material of 316 SS and pressure limit of 145 psig (10 bar), it offers reliable performance. The switch features a SPDT switch type, has a process connection of 1-1/2" male NPT, and an enclosure made of aluminum, powder coated material. It consumes 4 VA of power and has an electrical rating of 5 A @ 230 VAC. The sensitivity is adjustable and the time delay settings can be adjusted from 2 to 20 seconds. It also includes indication lights for easy monitoring.

Specifications

(Instrument-Sensor) NEMA Protection	NEMA 4X
(Instrument-Sensor) Application	Bulk Solids
Component	Level Switch
(Instrument-Sensor) Application	Dry Powder
(Instrument-Sensor) Type	Tuning Fork
Manufacturer	Dwyer Instruments
(Instrument – Sensor) Supply Voltage	24 VDC
(Instrument – Sensor) Supply Voltage	90 – 265 VAC
(Instrument-Sensor) Temperature Range	Ambient: -4 – 140 °F/-20 – 60°C

Features

Status indication with external LED switch indicator, and internal indicators for normal and alarm status

No calibration required for quick and easy installation

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

Vibrating fork design is ideal for low bulk density and low dielectric constant products, detecting products down to 1.8 lb/ft3 (30 g/l)

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

Adjustable sensitivity can be set to ignore lighter bulk density products and only detect heavier products, such as sand, gravel, or polyester chips in water

Unit is not affected by vibration from conveying systems, motors, or the movement of material

Mounted in any position and is available with factory built extensions for mounting on the top of the storage vessel

Failsafe setting with output switch that can be set for NO or NC condition on loss of power

Time delay prevents false alarms from material surges

Universal power supply yields one model which works with 90-265 VAC and 24 VDC

Dwyer TFLS-W11SR1-036 Tuning Fork Level Switch

Erik Prayoga — Tue, 23 Jun 2026 02:19:20 +0000

Dwyer TFLS-W11SR1-036 Tuning Fork Level Switch is a weatherproof, NEMA 4X rated switch designed to detect bulk materials submerged in liquid. It has a wide temperature range of -4 to 140°F (-20 to 60°C) and power requirements of 90 to 265 VAC or 24 VDC. With an enclosure made of aluminum, powder coated material, it ensures durability. The switch has a sensitivity for a minimum bulk density of 1.8 lb/ft³ (30 g/l) and a maximum particle size of 0.4" (10 mm). Additional features include adjustable time delays, indication lights, and a SPDT switch type.

Specifications

(Instrument-Sensor) NEMA Protection	NEMA 4X
(Instrument-Sensor) Application	Bulk Solids
Component	Level Switch
(Instrument-Sensor) Application	Dry Powder
(Instrument-Sensor) Type	Tuning Fork
Manufacturer	Dwyer Instruments
(Instrument – Sensor) Supply Voltage	24 VDC
(Instrument – Sensor) Supply Voltage	90 – 265 VAC
(Instrument-Sensor) Temperature Range	Ambient: -4 – 140 °F/-20 – 60°C

Features

Status indication with external LED switch indicator, and internal indicators for normal and alarm status

No calibration required for quick and easy installation

No mechanical moving parts with no routine maintenance required

Vibrating fork design is ideal for low bulk density and low dielectric constant products, detecting products down to 1.8 lb/ft3 (30 g/l)

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

Adjustable sensitivity can be set to ignore lighter bulk density products and only detect heavier products, such as sand, gravel, or polyester chips in water

Unit is not affected by vibration from conveying systems, motors, or the movement of material

Mounted in any position and is available with factory built extensions for mounting on the top of the storage vessel

Failsafe setting with output switch that can be set for NO or NC condition on loss of power

Time delay prevents false alarms from material surges

Universal power supply yields one model which works with 90-265 VAC and 24 VDC

Dwyer F7-MLK2 Level Switches – Horizontal/Specialty

Erik Prayoga — Tue, 23 Jun 2026 02:19:18 +0000

Dwyer F7-MLK2 is a horizontal/specialty level switch with an enclosure rating of general purpose. It has various mounting options and is compatible with liquids. The switch has a pressure limit of 218 psi and an electrical rating of 20 VA. The specific gravity and magnet type vary depending on the model.

Specifications

(Instrument-Sensor) Application	Liquid
Component	Level Switch
(Instrument-Sensor) Type	Horizontal/Specialty
Manufacturer	Dwyer Instruments
(Instrument-Sensor) Temperature Range	-4 – 257 °F/-20 – 125°C
(Instrument-Sensor) Temperature Range	14 – 176 °F/-10 – 80°C

Dwyer 201-WT-7810-C1-60 Chamber type level control

Erik Prayoga — Tue, 23 Jun 2026 02:19:17 +0000

Chamber type level control, side mounted, SPDT snap switch.

Specifications

Component	Chamber Type Level Control
Manufacturer	Dwyer Instruments

Dwyer Mercoid PBLT2-20-60 Submersible Level Transmitter

Erik Prayoga — Mon, 22 Jun 2026 17:51:53 +0000

Dwyer Mercoid PBLT2-20-60 Submersible Level Transmitter Series SBLTX Dirty Liquid Submersible Level Transmitter. Built in Lightning Protection. Perfect for Sludge and Slurries. Dirty Application Submersible Level Transmitter for dirty applications like wastewater and slurry applications. Recommended Accessories: A-625 Cable Hanger, A-297 Dessicant Filter.

Specifications

Component	Submersible Level Transmitter
(Instrument-Sensor) Size	3.4375"
(Instrument-Sensor) Type	Protective Cage
(Instrument-Sensor) Output Signal Type	4-20 Ma 2 Wire (Loop Powered)
(Instrument-Sensor) Measurement Accuracy	0.25%
(Instrument-Sensor) Application	Dirty Liquids
(Instrument-Sensor) Span	46'
(Instrument-Sensor) Temperature Range	0 °F – 200 °F
Manufacturer	Dwyer Instruments
(Instrument – Sensor) Supply Voltage	12 VDC
(Instrument – Sensor) Supply Voltage	24 VDC

Features

Meet application requirements with durable cage design with large diameter 316 SS diaphragm seal that is non-clogging and damage resistant to floating solids

Increased life with lightning and surge protection utilizing dual arrestor technology, grounded to case, eliminating both power supply surges and lightning ground strike transients (surge protection is not guaranteed and is not covered by warranty) on PBLT2 models

Eliminates particulate or water droplets from entering the transducer using maintenance-free filter

Peace of mind with UL approved intrinsically safe on PBLTX models for use in hazardous locations when used with proper barrier

Decrease ownership cost with durable, 270 lb tensile strength shielded and vented cable and excellent chemical compatibility

Flexible installation options with NPT connection to rigidly install in a pipe/conduit or use a A-625 hanging loop to attach a chain to remove from the installation

Minimal downtime with standard 72 hour lead time

Dwyer PBLT2-5-60 Submersible Level Transmitter

Erik Prayoga — Mon, 22 Jun 2026 17:51:52 +0000

Dwyer PBLT2-5-60 is a submersible level transmitter with a temperature range of 0 to 200°F (-18 to 93°C). It offers an accuracy of ±0.25% FS and operates on a power requirement of 13 to 30 VDC. With an IP68 enclosure rating and a response time of 50 msec, this transmitter is designed for use in hazardous locations. The output signal is 4 to 20 mA DC, and it is suitable for measuring compatible liquids. The wetted materials include 316 SS and 316L SS for the body, with polyether polyurethane or ETFE for the cable and fluoroelastomer seals. It has a pressure limit of 2X FS and a thermal effect of ±0.02% FS/°F. The electrical connections are wire pigtail, and the loop resistance is 900 Ω.

Specifications

Component	Submersible Level Transmitter
(Instrument-Sensor) Measurement Accuracy	0.25%
(Instrument-Sensor) IP Protection	IP68
(Instrument-Sensor) Application	Liquid
Manufacturer	Dwyer Instruments
(Instrument – Sensor) Supply Voltage	10 – 28 VDC
(Instrument – Sensor) Supply Voltage	13 – 30 VDC
(Instrument-Sensor) Temperature Range	-4 – 176 °F/-20 – 80°C
(Instrument-Sensor) Temperature Range	0 – 200 °F/-18 – 93°C
(Instrument-Sensor) Temperature Range	-4 – 149 °F/-20 – 65°C

Features

Meet application requirements with durable cage design with large diameter 316 SS diaphragm seal that is non-clogging and damage resistant to floating solids

Eliminates particulate or water droplets from entering the transducer using maintenance-free filter

Peace of mind with UL approved intrinsically safe on PBLTX models for use in hazardous locations when used with proper barrier

Decrease ownership cost with durable, 270 lb tensile strength shielded and vented cable and excellent chemical compatibility

Flexible installation options with NPT connection to rigidly install in a pipe/conduit or use a A-625 hanging loop to attach a chain to remove from the installation

Minimal downtime with standard 72 hour lead time

Dwyer Mercoid PBLT2-15-60 Submersible Level Transmitter

Erik Prayoga — Mon, 22 Jun 2026 17:51:52 +0000

Dwyer Mercoid PBLT2-15-60 Submersible Level Transmitter Series SBLTX Dirty Liquid Submersible Level Transmitter. Built in Lightning Protection. Perfect for Sludge and Slurries. Dirty Application Submersible Level Transmitter for dirty applications like wastewater and slurry applications. Recommended Accessories: A-625 Cable Hanger, A-297 Dessicant Filter.

Specifications

Component	Submersible Level Transmitter
(Instrument-Sensor) Size	3.4375"
(Instrument-Sensor) Type	Protective Cage
(Instrument-Sensor) Output Signal Type	4-20 Ma 2 Wire (Loop Powered)
(Instrument-Sensor) Measurement Accuracy	0.25%
(Instrument-Sensor) Application	Dirty Liquids
(Instrument-Sensor) Span	34'
(Instrument-Sensor) Temperature Range	0 °F – 200 °F
Manufacturer	Dwyer Instruments
(Instrument – Sensor) Supply Voltage	12 VDC
(Instrument – Sensor) Supply Voltage	24 VDC

Features

Meet application requirements with durable cage design with large diameter 316 SS diaphragm seal that is non-clogging and damage resistant to floating solids

Eliminates particulate or water droplets from entering the transducer using maintenance-free filter

Peace of mind with UL approved intrinsically safe on PBLTX models for use in hazardous locations when used with proper barrier

Decrease ownership cost with durable, 270 lb tensile strength shielded and vented cable and excellent chemical compatibility

Flexible installation options with NPT connection to rigidly install in a pipe/conduit or use a A-625 hanging loop to attach a chain to remove from the installation

Minimal downtime with standard 72 hour lead time

Dwyer Mercoid FBLT-2SC-IVEF-30-50 Submersible Level Transmitter

Erik Prayoga — Mon, 22 Jun 2026 17:51:51 +0000

Dwyer Mercoid FBLT-2SC-IVEF-30-50 Submersible Level Transmitter Series FBLT Flush Tip Diaphram Submersible Level Transmitter. Perfect for dirty applications like Sludge and Slurries. Flush, non-clogging diaphragm great for dirty applications. Vent has maintenance free filter to prevent particalate or water drops from entering transmitter. Recommended Accessories: A-297 Dessicant Filter.

Specifications

Component	Submersible Level Transmitter
(Instrument-Sensor) Output Signal Type	4-20 Ma 2 Wire (Loop Powered)
(Instrument-Sensor) Measurement Accuracy	0.25%
(Instrument-Sensor) Application	Dirty Liquids
(Instrument-Sensor) Type	Bullet Nose
(Instrument-Sensor) Type	Slim Bore
(Instrument-Sensor) Size	1.1875"
(Instrument-Sensor) Span	69'
Manufacturer	Dwyer Instruments
(Instrument – Sensor) Supply Voltage	12 VDC
(Instrument – Sensor) Supply Voltage	24 VDC
(Instrument-Sensor) Temperature Range	-4 °F – 176 °F

Features

Long operating life with a non-clog flush diaphragm tip for harsh applications

Eliminates particulate or water droplets from entering the transducer using maintenance-free filter

Suits harsh environments with choice of polyether polyurethane or ETFE cable materials for excellent chemical compatibility

Meet application requirements with narrow body design allows the FBLT to fit into stilling wells and narrow installations

Unit holds up in aggressive fluids with robust FKM fluoroelastomer diaphragm that is PTFE coated for a stick-resistant surface

Avoid product leaks typically cause by oil or grease with diaphragm cavity that is filled with gel

Flexible installation options with NPT connection to rigidly install in a pipe/conduit or use the A-625 hanging loop to attach a chain to remove from the installation

Dwyer PBLT2-10-60 Submersible Level Transmitter

Erik Prayoga — Mon, 22 Jun 2026 17:51:51 +0000

Dwyer PBLT2-10-60 is a submersible level transmitter with a temperature range of 0 to 200°F. It offers ±0.25% FS accuracy, 50 msec response time, and an IP68 enclosure rating. With 4-20 mA DC output, it is ideal for measuring compatible liquids in hazardous locations.

Specifications

Component	Submersible Level Transmitter
(Instrument-Sensor) Measurement Accuracy	0.25%
(Instrument-Sensor) IP Protection	IP68
(Instrument-Sensor) Application	Liquid
Manufacturer	Dwyer Instruments
(Instrument – Sensor) Supply Voltage	10 – 28 VDC
(Instrument – Sensor) Supply Voltage	13 – 30 VDC
(Instrument-Sensor) Temperature Range	-4 – 176 °F/-20 – 80°C
(Instrument-Sensor) Temperature Range	0 – 200 °F/-18 – 93°C
(Instrument-Sensor) Temperature Range	-4 – 149 °F/-20 – 65°C

Features

Meet application requirements with durable cage design with large diameter 316 SS diaphragm seal that is non-clogging and damage resistant to floating solids

Eliminates particulate or water droplets from entering the transducer using maintenance-free filter

Peace of mind with UL approved intrinsically safe on PBLTX models for use in hazardous locations when used with proper barrier

Decrease ownership cost with durable, 270 lb tensile strength shielded and vented cable and excellent chemical compatibility

Flexible installation options with NPT connection to rigidly install in a pipe/conduit or use a A-625 hanging loop to attach a chain to remove from the installation

Minimal downtime with standard 72 hour lead time

Dwyer Mercoid MBLT-2SC-IVPF-200-220 Submersible Level Transmitter

Erik Prayoga — Mon, 22 Jun 2026 17:51:50 +0000

Dwyer Mercoid MBLT-2SC-IVPF-200-220 Submersible Level Transmitter Series MBLT Miniature Submersible Level Transmitter. Slim Bore only 0.63" in Diameter. Slim design great for tight boreholes and well applications. Submersible Level Transmitter for Clean Applications. Vent has maintenance free filter to prevent particalate or water drops from entering transmitter. Recommended Accessories: A-297 Dessicant Filter.

Specifications

Component	Submersible Level Transmitter
(Instrument-Sensor) Output Signal Type	4-20 Ma 2 Wire (Loop Powered)
(Instrument-Sensor) Type	Bullet Nose
(Instrument-Sensor) Type	Slim Bore
(Instrument-Sensor) Application	Clean Liquids
(Instrument-Sensor) Span	150'
(Instrument-Sensor) Measurement Accuracy	0.10%
(Instrument-Sensor) Size	0.63"
Manufacturer	Dwyer Instruments
(Instrument – Sensor) Supply Voltage	12 VDC
(Instrument – Sensor) Supply Voltage	24 VDC
(Instrument-Sensor) Temperature Range	-4 °F – 176 °F

Features

Slender 0.63˝ (16 mm) diameter design fits in narrow openings

Constructed for years of trouble free service with welded 316 SS body and 316 SS nose cap

Body top is 316 SS and tapered to prevent damage or snares when pulling the unit out of the installation

Low power voltage output models are ideal for remote level monitoring with rechargeable battery and solar panel

Maintenance free filter on vent tube eliminates particulate water droplets from entering the transducer

Incorporates lightning and surge protection, eliminating both power supply surges and lightning ground strike transients