FB-08 Range
The FB-08 Series are precision fluidized baths, with exceptional temperature stability and uniformity, which make them the ideal choice for critical temperature sensor calibration and heat treatment processes. Models FB-08 and FB-08C Fluidized (Sand) Baths have become the market standard for carrying out shape setting (heat treatment processing) of metals including Nitinol and platinum for medical device manufacturing. These units are suitable for many other applications, including thermal testing of sensitive components such as semiconductor devices, wire products, delicate transducers and may also be used as a constant temperature environment for chemical reactions. Because the fluidized bed is a fine, dry powder, it does not have surface tension effects of liquid baths and will not wet any immersed components. The electrical insulating properties of the alumina used in the FB-08 Series are not affected by fluidization making it possible to conduct electrical measurements on objects such as printed circuit boards.
FB-08 Dead Bed Mode of Operation
The dead bed mode of operation is entered by shutting offair and power to the unit. The system reaches a state of thermal equilibrium after the bath media collapses and stability is better than ±0.010°C for a period of 3 to 6 minutes. This allows for precise comparison calibration of temperature sensors in the bath.
![Techne_FB-08_Dead_Bed_Mode_of_Operation]()
The standard FB-08 offers a wide operating range of 50 to 700°C (122-1292°F), PID temperature control and a built-in dust extraction and collection system. Fluidizing air is manually controlled in the standard FB-08, whereby the FB-08C includes automatic fluidizing air control and RS232 interface for remote user control via a PC. Both the FB-08 and FB-08C are shipped with a single probe plate, ring and one charge of fluidizing media (alumina). The probe holder, available as an accessory, is used to enhance the thermal conditions (control stability and uniformity) of the temperature zone within the bath. It is manufactured, by special order, to suit sensors under test.
Sensor calibration or precision heat treatment is simple and precise with the FB-08 series fluidized baths:
- Set the bath to the required temperature and air flow level (on standard units).
- Suspend the sensor to be tested in the bath (using the probe plate supplied or basket) in the working area and allow the bath to stabilize.
- Calibration or heat treatment can now be carried out using either a certificated standard (comparison method) or the readout from the FB-08 control unit (direct method).
![Techne_FB-08_series_uidized_baths]()
FB-08C
The FB-08C has been designed to allow calibration of thermal sensors with minimum supervision. Working in conjunction with a supervisory computer, via an RS232 interface, programs are created by the operator, allowing for the control of set temperature, incremental temperature steps and dwell times. The automatic fluidizing air control will adjust the air flow rate to suit the set temperatures of the bath. Where an ultra stable temperature condition is required, a “dead bed” state can be programmed into the system.