RDP Electrosense offers custom manufacturing for these products:
Linear Variable Differential Transformers (LVDT)
If your environment is not described here then please contact us; we have designed LVDT sensors for use in liquid lead at 400 degrees celcius as well as LVDTs for cryogenic environments so we will almost certainly have the answer.
LVDT and RVDT Signal Conditioners
Any standard RDP LVDT (without integral electronics). Most LVDTs from any manufacturer.
Signal conditioning is required where the output of a transducer needs to be boosted or changed into a form suitable for the monitor or logging device which will be used.