Model 620S Fast-Flo™ Mass Flow Meter


The Fast-Flo™ 620S Model Immersible Thermal Mass Flow Meter provides an economical solution for gas flow measurement applications.  It provides a 200 msec fast time-response microprocessor-based transmitter in a NEMA 4X (IP65) enclosure.  Product accuracy is ± 1% of full scale and the flow range is up to 20,000 sfpm (air) with standard accuracy.

The versatile microprocessor-based transmitter integrates the functions of flow-range adjustment, meter validation and diagnostics in a probe-mounted NEMA 4X (IP65) housing. Mass flow rate and totalized flow, as well as other configuration variables, can be displayed on the meter’s optional 2 x 12 backlit LCD panel.

Unique Product Features:

  • ±1% of full scale accuracy
  • 200 msec time-response
  • NEMA 4X (IP65) enclosure
  • Field validation & diagnostics
  • 3/8” diameter insertion probe
  • Probe lengths up to 24”
  • 316 stainless steel construction