Your search for "transducers" revealed the following:
Rosemount 499ATrDO Trace Dissolved Oxygen Sensor 499ATRDO-54
Rp 65.711.000,00
Vendor: APSS Store
View Product
Brooks MT3750C Metal Tube Variable Area Flowmeter (Rotameter)
Rp 16.879.000,00
Vendor: APSS Store
View Product
Metal Tube Variable Area Flow Meters for High Pressures and Extreme Temperatures
Rp 0,00
Vendor: APSS Store
View Product