Watlow

Watlow offers the most complete product line in the industry. With more than a quarter of a million designs on file, Watlow has the heater, sensor, or controller to meet your needs. Read more...

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Questions? Call one of our engineers at 1-800-884-4967.
Watlow PM PLUS PID & Integrated Limit Controller
Watlow PM PLUS PID & Integrated Limit Controller
Enhanced interface for easier programming and readability, 1/16 DIN or 1/8 DIN (vertical or horizontal) panel mount, Bluetooth compatible.
Some Models in Stock
Starting at $353.00
Watlow F4T Process Controller
Watlow F4T Process Controller
1/4 DIN, color touch screen panel with high resolution graphical user-interface and 1 to 4 control loops.
Some Models in Stock
Starting at $1,064.00
Watlow EZ-ZONE PM Controller
Watlow EZ-ZONE PM Controller
Power and functionality of a limit controller, PID controller, or integrated controller.
Some Models in Stock
Starting at $472.00
Watlow DIN-A-MITE Power Controller
Watlow DIN-A-MITE Power Controller
Innovative power controller, available in 4 models, can handle loads up to 100 amps.
Some Models in Stock
Starting at $193.00
Watlow FIREROD Cartridge Heater
Watlow FIREROD Cartridge Heater
Superior heat transfer, uniform temperatures, resistance to oxidation and corrosion, and a long life even at high temperatures.
Some Models in Stock
Starting at $37.45
Watlow PM Legacy Temperature & Process Controller
Watlow PM Legacy Temperature & Process Controller
Panel mount controller utilizing simple control and menu functionality without complex features.
Some Models in Stock
Starting at $255.00
Watlow EZ-ZONE ST Temperature Controller
Watlow EZ-ZONE ST Temperature Controller
Integrated thermal loop solid state controller.
Starting at $398.00
Watlow LV Series Limit Controller
Watlow LV Series Limit Controller
Most basic and economical limit controller.
Starting at $255.00
Watlow F4S Ramping Temperature Controller
Watlow F4S Ramping Temperature Controller
1/4 DIN single channel ramping controller.
Starting at $2,417.00
Watlow Screw Plug Immersion Heater
Watlow Screw Plug Immersion Heater
Ideal for direct immersion heating of liquids.
Call for pricing
Watlow EZ-ZONE RM Control Module (RMC) Multi-Function Controller
Watlow EZ-ZONE RM Control Module (RMC) Multi-Function Controller
1 to 4 loops of control, multi-function high performance controller.
Starting at $270.00
Watlow ASPYRE DT Power Controller
Watlow ASPYRE DT Power Controller
Modular and scalable power controller with a SCR design to deliver reliable results with minimal maintenance.
Some Models in Stock
Starting at $731.00
Watlow Series CV Temperature Controller
Watlow Series CV Temperature Controller
Most basic and economical 1/8-DIN-square limit / temperature controllers.
Starting at $195.00
Watlow Rigid Sheath Thermocouple
Watlow Rigid Sheath Thermocouple
General application rigid sheath thermocouple.
Some Models in Stock
Starting at $25.80
Watlow FLUENT In-Line Heater
Watlow FLUENT In-Line Heater
High watt density in a low mass heater optimizes heat transfer & temperature uniformity.
Select options for pricing
Watlow FIREROD Immersion Heater
Watlow FIREROD Immersion Heater
Compact, versatile immersion heater for water or water solutions 90% or above.
Call for pricing
Watlow F4D Ramping Temperature Controller
Watlow F4D Ramping Temperature Controller
1/4 DIN dual channel ramping controller.
Starting at $2,835.00
Watlow RB Style RTD
Watlow RB Style RTD
RB Style RTDs with standard industrial insulated leads.
Starting at $60.93
Watlow Insulated Wire Thermocouple
Watlow Insulated Wire Thermocouple
General application constructed with SERV-RITE insulated wire thermocouple.
Starting at $15.50
Watlow Circulation Heater
Watlow Circulation Heater
Watlow WATROD or FIREBAR heating elements combined with all necessary appliances to form a complete heating assembly.
Call for pricing
Watlow Flange Immersion Heater
Watlow Flange Immersion Heater
Flanged immersion heaters for heating liquids and gases in tanks and pressure vessels.
Call for pricing
Watlow Wire Wound Element Silicone Rubber Flexible Heaters
Watlow Wire Wound Element Silicone Rubber Flexible Heaters
Versatile Watlow heaters, capable of custom design and flexibility to meet almost any heating application even where space is limited.
Some Models in Stock
Starting at $38.58
Watlow Pipe Clamp Thermocouple
Watlow Pipe Clamp Thermocouple
General application pipe clamp style thermocouple.
Some Models in Stock
Starting at $27.90
Watlow RR Style RTD
Watlow RR Style RTD
RR Style connection head RTDs .
Some Models in Stock
Starting at $118.02
Watlow AR Style Mineral Insulated Thermocouple with Connection Head
Watlow AR Style Mineral Insulated Thermocouple with Connection Head
Fast-responding, durable, capable, and ideal for handling higher temperatures.
Starting at $105.28
Watlow D4T Data Logger
Watlow D4T Data Logger
1/4 DIN data logger, field removable I/O modules for maximum design flexibility, 4.3 inch color, graphical touch panel.
Starting at $1,637.00
Watlow WATROD Duct Heater
Watlow WATROD Duct Heater
The perfect heating solution for non-pressurized, air-heating applications.
Call for pricing
Watlow WATCONNECT Temperature Control Panel
Watlow WATCONNECT Temperature Control Panel
Applications from 1kW to 5 MW, suited for heaters, sensors and temperature control and power control products.
Call for pricing
Watlow MI Band Heater
Watlow MI Band Heater
Provides the high temperatures and watt densities needed for today's demanding procedures .
Call for pricing
Watlow Ring Terminal Thermocouple
Watlow Ring Terminal Thermocouple
General application ring terminal style thermocouple.
Starting at $21.35
Watlow AF Style Mineral Insulated Thermocouple with Metal Transitions
Watlow AF Style Mineral Insulated Thermocouple with Metal Transitions
Thermocouple with spring strain relief and metal transitions.
Starting at $109.57
Watlow EZ-ZONE RM Access Module Multi-Function (RMA) Controllers
Watlow EZ-ZONE RM Access Module Multi-Function (RMA) Controllers
Communication protocol options, data logging and automatic configuration backup.
Starting at $235.00
Watlow F4P Temperature Controller
Watlow F4P Temperature Controller
1/4 DIN high performance controller offers versatility in process / temperature applications.
Starting at $2,081.00
Watlow WATROD Tubular Heater
Watlow WATROD Tubular Heater
Single- and double-ended tubular heating elements.
Call for pricing
Watlow Rigid Sheath Thermocouple with Threaded Fitting
Watlow Rigid Sheath Thermocouple with Threaded Fitting
General application rigid sheath with threaded fitting thermocouple.
Some Models in Stock
Starting at $46.75
Watlow EZ-ZONE RMA PLUS Remote Access Module
Watlow EZ-ZONE RMA PLUS Remote Access Module
Communications, data logging and storage for all EZ-ZONE RM modules in a system.
Some Models in Stock
Starting at $642.00
Watlow Square Flange Immersion Heater
Watlow Square Flange Immersion Heater
Square flange immersion heaters designed for use in boilers and industrial storage tanks.
Call for pricing
Watlow EZ-ZONE RM High-Density Control Module (RMH) Controllers
Watlow EZ-ZONE RM High-Density Control Module (RMH) Controllers
4 to 16 loops of control, multi-function high performance controller.
Starting at $1,088.00
Watlow RF Style RTD
Watlow RF Style RTD
RF Style metal transition RTDs.
Starting at $143.49
Watlow 375 High Temperature Strip Heaters
Watlow 375 High Temperature Strip Heaters
Capable of both high temperatures and high watt densities with uniform heat and welded post terminals for strong connections.
Call for pricing
Watlow Flexible Thermocouple Extensions
Watlow Flexible Thermocouple Extensions
Watlow Flexible Thermocouple Extensions .
Some Models in Stock
Starting at $10.20
Watlow Grommet Style Thermocouple
Watlow Grommet Style Thermocouple
Stainless steel grommet with extremely low profile for fast response time.
Starting at $14.65
Watlow AB Style Mineral Insulated Cut and Stripped Thermocouple
Watlow AB Style Mineral Insulated Cut and Stripped Thermocouple
Cut and stripped mineral insulated thermocouples allow users to customize termination.
Starting at $18.38
Watlow Stainless Steel Shim Style Thermocouple
Watlow Stainless Steel Shim Style Thermocouple
Low profile thermocouple can be placed between components for measurement of surface temperature.
Starting at $19.30
Watlow Brass Shim Style Thermocouple
Watlow Brass Shim Style Thermocouple
General application brass shim style thermocouple.
Starting at $21.90
Watlow AB Style Mineral Insulated Cut and Stripped Dual Element Thermocouple
Watlow AB Style Mineral Insulated Cut and Stripped Dual Element Thermocouple
Dual element sensor with mineral insulation for performance allows users to terminate the thermocouple for convenience.
Starting at $24.04
Watlow AC Style Mineral Insulated Mini Plug Thermocouple
Watlow AC Style Mineral Insulated Mini Plug Thermocouple
Mineral insulated single element thermocouple with mini plug or jack termination.
Starting at $27.29
Watlow Adjustable Spring Thermocouple
Watlow Adjustable Spring Thermocouple
General application adjustable spring thermocouple.
Starting at $30.75
Watlow Large Diameter Rigid Sheath Fixed Thermocouple
Watlow Large Diameter Rigid Sheath Fixed Thermocouple
General application large diameter rigid sheath thermocouple.
Starting at $30.90
Watlow Adjustable Armor Thermocouple
Watlow Adjustable Armor Thermocouple
General application adjustable armor thermocouple.
Starting at $31.75
Watlow Nozzle Style Thermocouple
Watlow Nozzle Style Thermocouple
General application nozzle style thermocouple.
Starting at $34.65
Watlow Flange Style Thermocouple
Watlow Flange Style Thermocouple
General application flange style thermocouple.
Starting at $35.55
Watlow Rigid Sheath Fixed Bayonet Thermocouple
Watlow Rigid Sheath Fixed Bayonet Thermocouple
General application rigid sheath fixed bayonet thermocouple.
Starting at $36.55
Watlow AC Style Mineral Insulated Standard Plug Thermocouple
Watlow AC Style Mineral Insulated Standard Plug Thermocouple
Mineral insulated single element thermocouple with standard plug or jack termination.
Starting at $40.68
Watlow AF Style Mineral Insulated Dual Element Thermocouple
Watlow AF Style Mineral Insulated Dual Element Thermocouple
Thermocouple with spring strain relief and metal transitions.
Starting at $49.28
Watlow PFA Encapsulated Thermocouple
Watlow PFA Encapsulated Thermocouple
General application PFA encapsulated thermocouple.
Starting at $50.85
Watlow AQ Style Mineral Insulated Miniature Transitions Thermocouple
Watlow AQ Style Mineral Insulated Miniature Transitions Thermocouple
Watlow AQ Style Mineral Insulated Miniature Transitions Thermocouple.
Starting at $54.42
Watlow Solid State Relays
Watlow Solid State Relays
Longer heater life, fast cycle card, zero cross firing, back-to-back SCR design.
Some Models in Stock
Starting at $58.00
Watlow Specialty RTDs
Watlow Specialty RTDs
Six styles of RTDs with standard industrial insulated leads.
Starting at $76.00
Watlow RC Style RTD
Watlow RC Style RTD
RC Style RTDs with plug or jack termination .
Starting at $93.93
Watlow AT Style Mineral Insulated Thermocouple For Use with Thermowells
Watlow AT Style Mineral Insulated Thermocouple For Use with Thermowells
Fast-responding, durable, capable, and ideal for handling higher temperatures.
Starting at $96.83
Watlow AT Style Mineral Insulated Dual Element Thermocouple
Watlow AT Style Mineral Insulated Dual Element Thermocouple
Fast-responding, durable, dual element, and ideal for handling higher temperatures.
Starting at $103.79
Watlow AR Style Mineral Insulated Dual Element Thermocouple w/ Connection Head
Watlow AR Style Mineral Insulated Dual Element Thermocouple w/ Connection Head
Fast-responding, dual element, durable, and ideal for handling higher temperatures.
Starting at $104.06
Watlow RT Style RTD
Watlow RT Style RTD
RT Style RTDs for use with thermowells.
Starting at $119.52
Watlow EZ-ZONE RM Expansion Module (RME) Multi-Function Controllers
Watlow EZ-ZONE RM Expansion Module (RME) Multi-Function Controllers
Additional inputs and outputs and higher amperage outputs, multi-function high performance controller.
Starting at $223.00
Watlow Silver Series EM Operator Interface Terminal
Watlow Silver Series EM Operator Interface Terminal
Touchscreen operator interface terminal (OIT) with serial and Ethernet communications, e-mail messaging, and USB host.
Starting at $455.00
Watlow EZ-ZONE RM Scanner Module (RMS) Multi-Function Controller
Watlow EZ-ZONE RM Scanner Module (RMS) Multi-Function Controller
4 to 16 auxiliary analog inputs, multi-function high performance controller.
Starting at $493.00
Watlow ASPYRE AT Smart Power Controller
Watlow ASPYRE AT Smart Power Controller
Integrates easily with EZ-ZONE RM, PM PLUS and RMA PLUSTM controllers.
Starting at $495.00
Watlow EZ-ZONE RM Limit Module (RML) Multi-Function Controllers
Watlow EZ-ZONE RM Limit Module (RML) Multi-Function Controllers
4 to 12 safety limits, PID control loops, over/under temperature limit control loops.
Starting at $659.00
Watlow Series CLS200 Loop Controller
Watlow Series CLS200 Loop Controller
PID control of up to 16 heat and cool loops, auto-tune, and 34 digital outputs.
Starting at $2,805.00
Watlow Coiled Nozzle Heater
Watlow Coiled Nozzle Heater
High performance heater designed specifically for nozzle applications.
Call for pricing
Watlow Ceramic Fiber Heater
Watlow Ceramic Fiber Heater
Extremely low mass and high insulation value units with self-supported heating elements.
Call for pricing
Watlow Cable Heater
Watlow Cable Heater
High performance, high temperature heater can be cold-formed into almost any shape.
Call for pricing
Watlow Finbar Heater
Watlow Finbar Heater
Improves heat transfer to the air and permits putting more power in tighter spaces.
Call for pricing
Watlow FIREBAR Heater
Watlow FIREBAR Heater
Innovative, flat surface design improves heater performance.
Call for pricing
Watlow WATROD Multicoil Tubular Heater
Watlow WATROD Multicoil Tubular Heater
Versatile and innovative tubular heating element with multiple coils and/or thermocouples.
Call for pricing
Watlow Silicone Rubber Composite Heaters
Watlow Silicone Rubber Composite Heaters
Design includes equal length circuits and a no-heat tab for temperature uniformity.
Call for pricing
Watlow STARFLOW Circulation Heater
Watlow STARFLOW Circulation Heater
Designed to heat gas streams to 1400°F for drying applications .
Call for pricing
Watlow High Density Flex Modules
Watlow High Density Flex Modules
Four channel input module for use with the Watlow F4T or D4T.
Some Models in Stock
Starting at $108.00
Watlow Mixed I/O Flex Modules
Watlow Mixed I/O Flex Modules
Single channel module for use with the Watlow F4T or D4T, 2 outputs available.
Some Models in Stock
Starting at $35.00
Watlow Quencharc RC Suppressor
Watlow Quencharc RC Suppressor
Protects EZ-ZONE controller outputs from damage that can be caused by voltage spikes from inductive loads (250VAC max).
In Stock
$9.00
Watlow SERV-RITE Thermocouple Wire
Watlow SERV-RITE Thermocouple Wire
Premium performance and reliability, Insulation temperature ranges from -328 to 2600°F (-200 to 1427°C).
Starting at $78.00
Watlow SpecView HMI Software
Watlow SpecView HMI Software
Communicates with any EZ-ZONE controllers, flexible data logging and report generator.
Starting at $1,155.00
Watlow SAB Series Crimp / Braze Connectors
Watlow SAB Series Crimp / Braze Connectors
Starting at $2.60
Watlow SAC-220 Cable Clamp Connectors
Watlow SAC-220 Cable Clamp Connectors
Cable Clamp Connectors for Male or Female.
$3.10
Watlow MC Series Miniature Thermocouple Connectors
Watlow MC Series Miniature Thermocouple Connectors
Miniature design enables mating with other miniature size thermocouple connectors.
Some Models in Stock
Starting at $5.65
Watlow SC Series Standard Connector
Watlow SC Series Standard Connector
SC Standard Connectors are ASTM color coded and made of Compensated alloys.
Starting at $7.65
Watlow Terminal Block for Standard Connection Heads
Watlow Terminal Block for Standard Connection Heads
Starting at $10.15
Walow 0836-0763-0000 DIN-rail end stop
Walow 0836-0763-0000 DIN-rail end stop
$12.00
Watlow Rubber Plug for Slot D
Watlow Rubber Plug for Slot D
$12.00
Watlow Rubber Plugs for slots A, B, and E
Watlow Rubber Plugs for slots A, B, and E
$12.00
Watlow 50500701 / 50500801 Terminal Blocks for PT Heads
Watlow 50500701 / 50500801 Terminal Blocks for PT Heads
Single or dual elements for the PT Series polypropylene head.
Starting at $12.60
Watlow Three-Pole Connectors
Watlow Three-Pole Connectors
Three-Pole Connectors for RTD Applications, 400ºF (200°C).
Starting at $16.00
Watlow DIN-A-MITE Fuses
Watlow DIN-A-MITE Fuses
Semiconductor fuses for Watlow DIN-A-MITE power controllers and SSRs.
Some Models in Stock
Starting at $20.00
Watlow 0219-0382-0000 USB Cable
Watlow 0219-0382-0000 USB Cable
5-foot USB cable for downloading projects from a PC to the Watlow Silver Series operator interface terminal.
$21.00
Watlow SKP Single Panel Mount Hardware
Watlow SKP Single Panel Mount Hardware
Connectors Single Panel Mount Hardware, 425°F (218°C).
Starting at $25.40
Watlow DIN-A-MITE Fuse Holders
Watlow DIN-A-MITE Fuse Holders
DIN rail mount fuse holders for Watlow DIN-A-MITE power controllers and SSRs.
Some Models in Stock
Starting at $31.00
Watlow High Temperature Connectors
Watlow High Temperature Connectors
Starting at $33.40
Watlow EtherNet/IP Cable Adapter
Watlow EtherNet/IP Cable Adapter
For use with EZ-ZONE RM multi-function controllers.
$35.00
Watlow 1/16 DIN basic RUI DIN-rail mount bracket
Watlow 1/16 DIN basic RUI DIN-rail mount bracket
$35.00
Watlow Flash Card to USB Port Adapter
Watlow Flash Card to USB Port Adapter
$35.00
Watlow SD Industrial Memory Card 2G Memory
Watlow SD Industrial Memory Card 2G Memory
$47.00
Watlow PT Polypropylene Head and Connector Blocks
Watlow PT Polypropylene Head and Connector Blocks
Starting at $50.85
Watlow Standard Thermocouple Connection Heads
Watlow Standard Thermocouple Connection Heads
Made of cast iron (1/2, 3/4, or 1in NPT) or aluminum (1/2in NPT).
Some Models in Stock
Starting at $50.85
Watlow 50A Current Transformer
Watlow 50A Current Transformer
0 to 50A transformer for EZ-ZONE RM multifunction controllers.
$70.00
Watlow Modular Back Plain Connector
Watlow Modular Back Plain Connector
$76.00
Watlow Explosion Proof Thermocouple Connection Heads
Watlow Explosion Proof Thermocouple Connection Heads
Starting at $82.80
Watlow Silver Series Power Supply
Watlow Silver Series Power Supply
Power supply for Watlow Silver Series Operator Interface Terminals.
Starting at $88.00
Watlow 0219-0388-0000 Communication Cable
Watlow 0219-0388-0000 Communication Cable
Communication cable for 4.3 inch screen versions of Silver Series Operator Interface Terminals.
$90.00
Watlow 0219-0374-0000 Communication Cable
Watlow 0219-0374-0000 Communication Cable
Communication cable for 7 and 10 inch versions Silver Series Operator Interface Terminals.
$90.00
Watlow Communication Flex Module
Watlow Communication Flex Module
Modbus RTU 232/485 communications for slot 6 of the Watlow F4T or D4T.
Some Models in Stock
Starting at $100.00
Watlow Limit Flex Module
Watlow Limit Flex Module
Limit control with universal, thermistor and temperature inputs for use with Watlow F4T or D4T.
Some Models in Stock
Starting at $130.00
Watlow Remote User Interface
Watlow Remote User Interface
In-panel display and interface for the Watlow EZ-Zone ST Integrated Control Loop.
Starting at $191.00
Watlow AC/DC Power Supply Converter 90-264VAC to 24VDC
Watlow AC/DC Power Supply Converter 90-264VAC to 24VDC
$283.00
Watlow AC/DC Power Supply Converter
Watlow AC/DC Power Supply Converter
From 90-264VAC to 24VDC (2.5A, 60W) for EZ-ZONE RM multi-function controllers.
$350.00
Watlow AC/DC Power Supply Converter 90-264VAC to 24VDC
Watlow AC/DC Power Supply Converter 90-264VAC to 24VDC
$462.00