Thurston Engineering offers a complete line of industry leading digital and analog temperature and process control instruments. We can provide the solution for your controlling requirements from Solid State and Mercury Displacement Relays to highly customized control panels, hot runner controls, and power controllers. Contact our representatives to find the solution that is best for you.
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| Custom Heating/Cooling Solutions - Modular Control Panels |
From hardware and software product development through testing, prototyping and production, our custom electronics modules are tailored to your exact specifications. Our products have recently undergone an extensive redesign to make them both visually and functionally distinctive. Each product comes with a performance guarantee and on-going technical support; including documentation. Our Modular Control Panels offer the "best of both worlds" allowing you to select as much or as little heat and/or cool control as you need. Our compact basic control board can accept plug-in boards so you can purchase the amount of capacity you need now plus have the ability to add to your system later as your needs grow. Let us show you how we can design a system for your most challenging control project.
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| We offer comprehensive design and production services for custom control equipment to measure and control any combination of the following variables:
Temperature Time
Humidity Liquid Levels
Motor Speed Stepper Motor Control
Motion & Placement Pressure
Vacuum Self Diagnostics
Productivity Reporting Serial Communication
Robotics Control
Just tell us what you need to control and we'll provide the exact solution for you.
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| We offer a full line of controllers including Loop Controllers, Digital Controllers, Analog Controllers, and Series Limit Controllers.
Our multi-loop PID offers up to four loops of PID control with cascade feed forward capabilities for less than four separate controllers with similar capabilities.
Digital controllers are designed for a wide range of diverse temperature and process control applications.
Analog Controllers are designed for panel and subpanel PID temperature control, accurate proportional termperature control, differential (on/off) to proportional control and as superior electronic temperature controllers to replace bulb and capillary controllers.
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| Hot Runner Controls and Accessories |
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Let us be your one stop shop for Hot Runner Controls and Accessories. We offer Pre-wired Combination Mold Junction Boxes for Hot Runner Wiring in three models for fast and simple mounting of power and thermocouple connectors to the mold.
Our Control Units are microprocessor based, compatible with industry standards and can be made with a variety of zone configurations, thermocouple inputs, keypad or desktop control options, display options, audible alarms, and built in diagnostic systems.
We offer Portable Mainframes with one to three zones of control and 15 amps per zone. One version can be ordered with up to 30 amps of zone control. 5 Plus Zone Mainframes include "boost mode" for temporary % power increase, ground fault protection, adjustable set point limits, storage of highest temperature detected, monitor display of average current to load and are CE compliant.
Horizontal Portable Controllers are available with microprocessor-based circuitry, built in diagnostics for self tuning, and the ability to set or change zones remotely from a desktop or other module in the mainframe.
We carry an extensive line of accessories including Mold Power Cables, Thermocouple Cables, Flexible Mold Power and Thermocouple Cables, Mold Connectors, Mold Terminal Mounting Boxes, Custom and Combination Cables, Prewired Terminal Boxes, Portable Mainframe Accessories, and a Dual Voltage Hot Runner Control System (combines 240 Vac and 24 Vac into one mainframe) and System Accessories.
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| Thurston Engineering can provide the power controller for virtually any need. Zero Voltage Switched or Phaseangle Fired Controllers are available for the control of resistive heater loads. These systems have capacity of up to 80 Amps and will extend heater life while eliminating thermal shock. Our Stagers are available for heater, heat/cool, or boiler applications. They accept voltage or resistance input and provide solid state output stages. Our Digital Staging Controller can drive contactors for up to ten heaters or cooling devices to keep a process at a specific setpoint and can be set to accept input from a thermistor and control temperature under the direction of the on-board processor. This stager can compensate for outdoor temperature by using an additional outdoor thermistor. For low cost open loop control, we offer Manual Stations with non-indicating controllers. These controllers allow manual setting of output levels on SCR power controllers, proportional valves, and other final control mechanisms. Finally, our Series Converters convert a 4-20 mA input from a process/temperature controller or computer to a time proportional output. They mount directly on a 3-32 VDC input SSR and support single or three phase 50 or 60 Hz operation.
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| Mercury Displacement Relays |
Our Mercury Displacement Relays are the ultimate solution for your most demanding application. Our manufacturing process assures that your relay will function consistently in the harshest temperature, moisture, and dust environments. Special care and cleaning are employed in the manufacturing process to avoid contaminants. Contactors are hermetically sealed using high quality glass to metal seals. The stainless steel tube is completely encased in high quality UL approved epoxy for exceptional moisture protection. We use coils wound on compact nylon bobbins, molded onto the metal tube, for minimum power loss, allowing actuation at low coil power and minimizing derating at higher ambient temperatures. Inert gasses are used internally to prevent excessive arching between the mercury and the electrodes which cuts down on mechanical wear and allows our relays to function reliably for millions of cycles. Each tube in our multiple pole units is actuated by its own coil to eliminate pull-in variation between contact tubes and ensure consistent switching.
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| Mercury Displacement Relays |
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| Solid State Relays (SSRs) |
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| We offer a full line of Solid State Relays with integrated heat sinks designed to fit a wide variety of applications. Solid State Relays contain no moving parts, so they can cycle on and off many times per second. They are especially advantageous in heating applications where high cycle rates are required. Our SSRs come in standard sizes to make replacement of alternative products quick and easy.
Additional features include: AC Semiconductor Contactor Zero Switching Direct-Copper Bonding (DCB) Technology LED indication, Cage Clamp Terminals 2 Input Ranges (4-32 VDC and 24-275 VAC/24-48 VDC) Non-Repetitive voltage up to 1200Vp Opto Isolation > 4000 VACrms Operating Temperature -30 to 80 degrees C Junction Temperature 125 degrees C (120 degrees-50 AMP Series)
20 & 30 Amp Series Features: Operational Ratings up to 30 AACrms and 600 VAC Cage Clamp Terminals ensure secure load connections to 10 AWG
50 Amp Series Features Operational Ratings up to 50 AACrms and 600 VAC Cage Clamp Terminals ensure secure load connections to 3 AWG or 2 wires at 6 AWG
70 Amp Series Features Operational Ratings up to 70 AACrms and 600 VAC Cage Clamp Terminals ensure secure load connections to 3 AWG or 2 wires at 6 AWG
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| Solid State Relays - Industrial 1-Phase |
| This Industrial 1-Phase Solid State Relay, commonly referred to as a "Hockey Puck" relay features many key features which make it the most widely used industrial SSR. Its antiparrallel thyristor output can be used for resistive, inductive and capacitive loads. The zero switching relay switches on when the sinusoidal curve crosses zero and off when the current crosses zero. The instant on relay can be used to control input. The built in varistor makes our SSR ideal for heavy industrial applications by offering secure transient protection. An LED indicator shows the status of control input and a clip on cover offers touch protection to IP 20. Our protected output terminals can handle cables up to 16 sq. mm.
Additional features include: Direct copper bonding (DCB) technology Built in Varistor 480V Self-Lifting Terminals Housing Free of Molding Mass 2 Input Ranges 4-32 VDC & 20-280 VAC/22VDC Operational ratings up to 75 AMPrms Rated Voltage 480 VACrms Blocking Voltage 1200Vp Opto-Isolation> 4000 VACrms
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| Solid State Relays (SSRs) - Industrial, 3-Phase |
| These Solid State Relays are designed to switch various loads in voltages up to 600 VAC. They are typically used in heating elements, motors and transformers. They contain a built in Varistor necessary for heavy industrial applications and have three semi-conductor power units bonded directly to the substrate for higher reliability and load cycle capability.
Additional features include: 3-Phase Solid State Relay Zero Switching Rated Operational Current: 3 x 75 AMPS Control Voltage 24 - 50 VDC/24/275 VAC Integral Snubber Network Built in Varistor IP 10 Back-of-Hand Protection LED Indication of Control Input Heat Sink and 24 VDC Fan Included
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Our Time-Temperature Controllers are east to operate, microprocessor based, easy to install/replace and have been designed to replace controllers on the Blodgett pizza oven. They are available with user-friendly interfaces and feature protective overlays to keep the unit clean. These units offer a significant cost savings over other available aftermarket pizza oven controllers.
The AcuTrol System is a must have for Wine Fermentation. AcuTrol is specially designed and engineered to provide precise automatic control of temperature during the wine fermentation process.
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