McShane, Inc. | Temperature Controller, NTC Thermistor, and Electronics Engineering & Manufacturer


Open Frame Temperature Controller with RS232 or RS485 Communications		Self-Contained Heat & Cool Temperature Controller
Connect these 5C7 and 5R7 series temperature controllers to a PC for Data Acquisition (DAQ), as Automated Test Equipment (ATE) with a Test Executive, or for custom computer control of DC, AC, or TEC. Open frame. Available with VDC output, with RS232 or RS485 communications, or VAC output using RS232 or VAC output using RS485 communications.		New, RoHS Compliant, low cost bipolar 5R7-570 temperature controller is for peltier modules . This works over 2 temperature ranges. It has an optional remote set pot or a digital display/set front panel (shown with optional label). The controller will automatically switch between heating and cooling modes as needed.

Open Frame Kilowatt Temperature Controllers		Self-Contained Heat or Cool Temperature Controller
Kilowatts of power for Peltier Module arrays providing 12 to 28 vdc and up to 25 amperes of temperature control from the Client and each Server temperature controller - up to 680 watts from each controller. The Model 5C7-582 Temperature Controller ($379, 9-36V, 28A max, 1KW max) can be used alone, or it can be used as a Server to the Model 5R7-583 Client Temperature Controllers ($250, 12-28V, 25A max, 680W max each) to provide a tremendous amount of combined power for heating and/or cooling. Single control sensor. The 57-582 can also be used with the Model 5C7-584 Display (front panel PCB, $125) No web page at this time.		Our low cost DC heater controller or TEC controller (TECC). When used with peltier modules This small controller with Proportional Bandwidth and Integral Gain is an inexpensive way to keep cool and it can handle up to 24v and 7.5A. This is perfect for cooling small enclosures to a fixed temperature such as keeping an enclosure from going above room temperature. If you need to heat and also cool to maintain the temperature use the 5R7-570 (left) or 5R7-001 (above).

Benchtop Temperature Controller with Settable Voltage		AC Voltage Temperature Controllers
The benchtop 5C7-195 temperature controller is the easiest way to get started with peltier modules, or DC voltage heaters. At only $795, this controller works over 4 temperature ranges and also has a digital, adjustable voltage range. Primarily developed to help our customers define their OEM requirements, it's small size of approximately 8" X 7" X 2.5" and the front panel controls help to make this controller suitable for many applications, and it is convenient for becoming familiar with peltier modules, university courses, and R&D.		World class OEM style temperature controllers for AC. Enclosed, open frame, or with communications and PC Setup software. We have controllers that work with our Thermistors, or with Thermocouples (T/C).

Our Expanding Line of Digital Temperature Controllers for Thermoelectric Devices, Fans and Resistive Heaters ...		Innovative and Cost Effective Customization...
Our decades of experience in building Pulse Width Modulated temperature controllers has resulted in new, state-of-the-art, digital controllers for heaters and coolers that run on a DC voltage. The addition of our proportional control setting makes these controllers superior to simple bang-bang controllers (On/Off, which is an optional setting) so that you now have safe, efficient, and reliable control for peltier modules and other DC devices. We were one of the first to supply low cost, PC compatible, and also custom TEC controllers (TECC) for thermoelectric devices, and have been doing so since 1999. Compared to analog controllers, these digital controllers offer lower heat dissipation and lower prices. Our PC compatible versions are rich in features that can be accessed through our setup program, or your own custom program. With the PC programmable controllers, we provide unique extras so that you can have your first controller up and running fast. All controllers can be customized and custom built. See Temperature Controllers		Start R&D with our standard controllers. High powered and feature rich, they will help you define your requirements. Unlimited Potential Quality Custom Solutions and Outsourcing: If you are building a controller into a product, customization is the key to lower cost and a controller that has the "perfect fit". Save money on volume orders by having a controller designed to your specifications. Use different Thermistors, Platinum RTD, Thermocouples or Temperature Transmitters. Use communications of your choice. Customize the circuit board and then go to SMT. Build for UL approval, certified medical, military spec, etc. Fast Track your OEM Product Give your design cycle a kick start . . . our expert advice can save you time and effort in helping to determine an effective thermal system. Questions? Comments? Contact McShane

Welcome
to McShane, Inc.

Since 1964 we have provided cost effective and innovative OEM products and services. Temperature controllers and sensors are the flagship products, but our strength is based on the long term partnerships we have forged with our customers. With full design, prototype and manufacturing capability, we are able to provide the critical advantage for getting to market and staying competitive.

Temperature Controllers and Sensors are on this web site. We also provide custom OEM controllers for humidity, motion, flow, and more.

We can manufacture to AS9100 international aerospace quality standard, or MIL-SPEC, or with RoHS compliance, or using ISO 9001:2000 certification, and we can design to meet other certification requirements such as UL or CE . (Standard offerings only meet the certification requirements shown in their specifications.) Offshore manufacturing is available in high volume to lower cost.

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TEL: +1 (330) 725-4568

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ZERO VOLTAGE SWITCHING
(or ZERO VOLTAGE FIRING)

Zero Voltage Switching means that the power to the load (heater or cooloer or other device) is switched on or off only when the output voltage is zero volts.

Zero Voltage Switching can extend the life of a controller and of the load being congtrolled.

Controllers with Zero Voltage Switching use triacs or other solid-state relays instead of mechanical relays, and, in fact, all of our temperature controllers which use a triac are inherently Zero Voltage Switching.

With AC current, the voltage is zero 50 to 60 times per second. For example, with 120VAC at 60Hz the voltage swings from 0 volts to -120 volts to 0 volts to +120 volts and back to 0 volts 60 times per second. The controller only turns the power to the load on or off when the voltage is zero. (Since the cycle described above repeats itself, there are, at 60 Hz, 120 times every second that the AC voltage is at zero volts and power switching can occur.

With DC power, as used with thermoelectric controllers, the DC voltage is first converted by the controller to DC PWM (DC voltage that is Pulse Width Modulated). The voltage repeatedly goes from a positive or negative voltage to zero volts, and so this type of output power can also be switched on or off when the voltage is zero. The frequency of these pulses is high enough that the effecton the peltier device approximates that of DC power (without pulsing), and so pulsing the voltage in this way does not harm the peltier device.

Zero Voltage Switching has an advantage over the kind of switching that would normally be accomplished with a coil relay beacuse there is a reduced chance for electrical arcing. A relay could turn te power on when the voltage is high and then an electrical arc (spark) could result.