Can I connect a thermistor probe (27k? at 25 °C) to a Bridge Amp?

It is possible, but it will require some electronic understanding and soldering.

When connecting a thermistor probe to an ADInstruments Bridge Amp an offset will be created due to the fact that the Bridge Amp requires a full bridge circuit on its input. To remedy this, the compensating resistors need to be placed in the connector to complete the full bridge network.
A matching resistance to the thermistor resistance is required in one of the arms of the bridge, so place a matching resistor between pins 3 and 4. In the  other two balancing arms you can also place a resistor with the thermistor resistance (between pins 2 and 4 and pins 1 and 2). A 1.2 M? resistor is placed between pins 5 and 8 to set the excitation to 2 V. This is described in the Bridge Amp manual, page 89 "Setting up Excitation voltage". 
If you are measuring outside the linear range, LabChart's Multipoint Calibration Add-on might be of interest for you. It can be installed from LabChart's Feature Manager.

For further technical assistance with this or any other issue, please contact ADInstruments Technical Support by clicking HERE.