TEC Controllers are widely used for OEM Fiber Optic Component and Laser Diode commercial products.
Laser diode temperature control.
WDM temperature control (Wavelength Division Multiplexer).
DWDM temperature control (Dense Wavelength Division Multiplexer).
AWG temperature control (Arrayed Waveguide).
FBG temperature control (fiber Bragg grating).
and temperature control for other temperature sensitive fiber optic components.
And our standard controllers are used in Q&A, university projects, or the laboratory.
Temperature Control of Fiber Optic Components and Laser Diodes
If you need to control the temperature of electronic or fiber optic components, you are probably considering a small resistive heater or TE (peltier) module. The TE module is a common choice for temperatures near or lower than ambient because they can cool as well as heat. A resistive heater may be a good choice for high temperatures. Our customers are generally looking to control DC voltage TE modules or heaters.
Start your R&D with our standard controllers. More power and feature rich, they will help you define your requirements. Standard TEC Controllers (TECC) are at the top of our Descriptive Index. These have PC communications, but you only use that for PC based configuration or monitoring, or for operation from your own custom program. Otherwise, these can run stand-alone.
Depending upon the overall dynamics of your thermal system, it is possible to achieve a laser diode or fiber optic component spectral stability of ±0.1 nm (±0.001 Absorbance Units) or better using one of the standard controllers.
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'. Major players in the fiber optics industry are using our custom built products and services.
Switch to different thermistors, or to Platinum RTD, or to thermocouples. Switch communications to I2C. Customize the circuit board and then go to SMT. UL approval, certified medical, military spec, etc. We have done it all.
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.
With our RS485/RS232 interface you can run any RS485 device off your computer's serial port (the RS232 COM port). Our interface is an opto-isolated "Automatic Transmit-Enable" converter (°3000VDC, 1 second). This device is RS232 to RS485 and back with 9-35VDC single-supply operation, communications status lights, on-board RS485 protection, and other enhancements. Includes enclosure, power supply and RS-232 cable.
Model IHV24AT-B9FSPS $140.00 QTY1 when purchased with controllers. $180.00 QTY1 Alone OEM/QTY pricing is available.
Usually you connect to the serial port of the computer using
a female DB9 or female DB25 connector. Also referred to as a
female 9 pin, or female 25 pin, D-shell connector. The serial
port is RS232C (or RS-232C). RS232 stands for Recommended
Standard number 232, and the C stands for revision C. Each RS232
device at our site connects to an RS232C serial port through
a cable you provide (unless otherwise noted). 3 wires are generally
used: Signal Ground, Trasmitted Data (TD), and Received Data (RD),
otherwise referred to as Ground, Transmit and Receive. At both
ends of the cable, pin 1 is Ground. At the computer,
Receive is pin 2, while at the peripheral (e.g., temperature controller)
it is pin 3. At the computer,
Transmit is pin 3, while at the peripheral it is pin 2. The connection
is made via "twisted pair" - which
means the Transmit and Receive lines are twisted around each
other along their length, from one end to the other. For the cable, solid copper wire
is preferred over stranded wire simply because there are no strands
at the end that can break off, or bend out, and short the connection. With appropriate
converters you could connect by other means, such as infra-red light (e.g., IrDA).
RS485 Serial Communications
RS485 (Recommended Standard 485) is specified to handle up to 32 devices in one
loop. The "loop" is a length of 2 or 3 wires: +, - and ground. The devices
tap into the wires along their length. The end of the + and - pair of wires
is terminated with a resistor. Modern ICs used as an interface to the loop
can sometimes handle more that 32 devices on one loop. It is sometimes
possible to have 64 or 96 or more devices on the same loop. With RS232/RS485
converters, each loop uses one of the computer's COM ports. Baud rates
greater than 100,000 baud are possible depending on the computer and the
operating system. An edge connector allows you to attach a cable for the
RS-485. 2 wires minimum [A and B, or (+) and (-)] are usually needed but
COMMON is provided as well. Any untwisted wire is fine for a short run,
but best, especially for long runs, is shielded, twisted pair, 120 Ohm
characteristic impedance cable. for more detailed information see our library
Almost all of our temperature controllers will function at ambient temperatures down to -20ºC (-4ºF).
Many designs will accept a -40ºC (-40ºF) operating ambient. Custom controllers can be built to operate down to -55ºC (-67ºF).
Operation at the low ambient is determined by the ICs used and their ability to have
the correct gain and stable states. The output or load circuit may require
increased drive to turn on. Any design that is specified to a low ambient
operating temperature has been tested and shown to provide sufficient output
drive at that temperature.
High Ambient Operating Temperatures
The high temperature is harder to define than the low, because the high ambient
operating temperature depends upon the controller power dissipation and
the heat sink dissipation.
For all our Pulse Width Modulated (PWM) controllers the following applies:
The power dissipation of the controller is largely a function of the load
current, and only slightly a function of the input voltage. Example: A
unit running at 28v and 25 amps will dissipate the same power into the
base as one which is 12v and 25 amps, however reducing the load current
to 12.5 amps will reduce the power dissipation into the base by 1/2.
For an analog controller, the standard 1/4 power point analysis applies
when determining power dissipation.
The TE controllers are limited by the base plate (mounting bracket) temperature,
because this is the heat sink for the bi-phase H-Bridge. Under full load
the controller will be dissipating approximately 15 watts into the base
plate, Therefore, if the controller is operated at elevated temperatures
you need to provide additional heat sinking for the base plate. At laboratory
temperatures (room temperature, about 20ºC or 70ºF) the controller
will reach about 75ºC under full load. So if you provide an additional
heat sink which results in, say. 70ºC in a 50ºC ambient, the
controller will still function appropriately.
Model 5C6-353: This Laboratory Benchtop Temperature Controller with a 10
Ampere maximum output is designed to run in a laboratory environment. Maximum
ambient operating temperature is 35ºC to 40ºC (95ºF to 104ºF).
Model 5C6-355: This Laboratory Benchtop Temperature Controller with a 15
Ampere maximum output is designed to run in a laboratory environment. Maximum
ambient operating temperature is 30ºC (86ºF).
Model 5CX-140: The 5CX-140 series of controllers have a "derating curve"
(see below) on the customer drawing that is defined by the temperature of the case.
5CX-140 Series Derating Curve
Sensors, TE modules, power supplies, device drivers, cables, etc. may be available for this product but are not included in the pricing.
Sensors for the Model 5C7-195 Temperature Controller
THERMISTORS FOR THE MODEL 5C7-195 TEMPERATURE CONTROLLER
Type:NTC · Curve:Fenwall Curve 16
A thermistor is a "thermally sensitive resistor". It is a widely used fundamental electrical component. A thermistor is sensitive and reasonably priced. It does not require the cold junction of a thermocouple, and it is generally faster than Platinum RTD.