The compact design of the WTC32ND-HB Temperature Controller achieves 0.0009°C temperature stability. This adaptation of the standard WTC32ND operates from 3.6 V, Lithium-Ion batteries. The sensor range is limited to 1.6 V (with 3.3 V power supply). Do not operate over 8 V input.
Its package can be integrated with a heatsink WHS302, thermal washer WTW002, and fans WXC303 (+5 V) or WXC304 (+12 V) for easy prototyping. The linear, PI control loop offers maximum stability while the bipolar current source has been designed for higher efficiency. The WTC32ND-HB drives up to 2.2 A for either Thermoelectrics (bipolar) or Resistive Heaters (unipolar).
The WTC32ND temperature controller is easily configured for any design. A circuit calculator tool speeds selection of external component values (see Design Tools tab). Virtually any type of temperature sensor can be used with it and a built in sensor bias current source simplifies use with resistive temperature sensors. The Proportional Gain (P) and Integrator Time Constant (I) are set by external resistors and can be modified to optimize temperature overshoot and stability.
Other features offer added flexibility. Independent heat and cool current limits are set by single resistors. An onboard reference voltage simplifies potentiometer control of the temperature setpoint. You can also choose to operate remotely with an external setpoint voltage. Monitor actual sensor voltage at pin 9.
The robust and reliable WTC32ND-HB is designed into handheld electro-optical systems, eye-safe atmospheric lidar, airborne instrumentation, Raman spectrometers and medical diagnostic equipment. The WTC is particularly suited to applications where temperature is scanned across ambient.
Wavelength provides the free LabVIEW Virtual Instrument executable file for use with the WTC32ND-EV Evaluation Board. Click here to download. The executable VI also requires the 2017 LabVIEW Run-Time Engine, available for free download from the National Instruments website: https://www.ni.com/en-us/support/downloads/software-products/download.labview-runtime.html#369481, as well as the DAQmx Viewer also available for free from the NI website: http://joule.ni.com/nidu/cds/view/p/id/2604/lang/en.
The source code for the LabVIEW Virtual Instrument module is available for free in case you wish to modify the program yourself. Alternately, Wavelength can customize the Virtual Instrument to suit your application. Contact a Sales Engineer for assistance.
WTC32ND vs. WHY56ND:
– The WTC32ND incorporates remote voltage control and temperature monitor. The WHY56ND does not.
– The WTC32ND supports AD590 and LM335.
– The WHY56ND requires external circuits to operate anything other than resistive sensors.
– Two or more WHY56NDs can be used together for more output current.
– If you do not need all the features of the WTC32ND, the WHY56ND is a lower cost solution.
NOTE: The WHY56ND and WTC32ND do NOT have the same pin configuration.
Free, effective, and responsive technical support is available to simplify integration of Wavelength products into your OEM design. Standard product can be easily modified to meet your application requirements.
