Thermal Mass Flowmeter 534 FTB series / Inline, Built-in Flow Conditioner

Type : Inline
Flow Rate : 0 ~ 10,944 NCMH
Size : ½” ~ 8”
Pressure : 20 Bar
Temperature : - 40 ~ 125 C
Accuracy : - 40 ~ 125 C
Turn Down Ratio : 1,000 : 1
Voltage : AC 85 ~ 265 or DC 24V
Output : 4 ~ 20 mA, Pulse, Relay

Kurz 534 FTB series with build in Flow Straightener is ideal for small size pipe in Boiler installation.
http://www.kurzinstruments.com/products/in-line-mass-flow-meters.html