Signal conversion, 4-20mA to CanBus

I'm seeking a device that can do signal conversion from current loop 4- 20 mA to CanBus. It will operate in a harsh environment but be encapsulated in an atmospheric chamber. Typical requirements are -20 to 85 degC, exposed to shock and vibrations, preferrably supplied with pigtails and not connectors.

Anyone who knows vendors that supplies or could supply such devices?

Thanks!