Go with the (intrusion-free) flow

Flow and Temperature Transmitter
Model 4411.30 inline flow and temperature transmitter has a hollow stainless steel tube for intrusion-free flow monitoring. The unit reads flow rates to 10 fps at temperature ranges -20-180 °F, and has a separate 4-20 mA DC output for flow and for temperature. It comes in 6-28 mm pipe sizes. It can be field adjusted using onboard zero and span potentiometers to tune the unit to specific flow rates.
Measurement and Sensing
Product Type:
Process Variables