The Model 620S Fast-Flo® insertion mass flow meter was designed to give customers a highly reliable 200 msec fast time-response (Fast-Flo® Sensor Technology) mass flow meter for light-industrial applications where a NEMA 4X (IP65) enclosure is acceptable. The Model 620S has an accuracy is ± 1% of full scale, 0.2% of full scale repeatability, and the flow range goes up to 20,000 sfpm.  

The Model 620S is commonly used to measure air, nitrogen or any other inert gas. In addition, the compact and versatile microprocessor-based transmitter integrates the functions of flow-range adjustment, and meter validation and diagnostics. 

The Model 620S enclosure is available in probe-mount or remote-mount configurations and has a 316 stainless steel, 3/8-inch diameter insertion probe available in lengths from 3.7-inches up to 24-inches. 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 readout.

• Reliable, durable thermal mass flow technology
• Milliamp and pulse outputs for logging and remote monitoring
• 100:1 turndown capability
• Available for copper and steel pipe, 1/2" through 6"
• No calibration or setup required
• Complete flowmeter in one package

The CDI compressed air flowmeters represent a radical departure from conventional flowmeter designs, providing easy installation, low cost, and accurate placement of the probes in the air stream. The meter clamps around a pipe with its probes projecting into the pipe through drilled holes. The low cost of the meter makes it ideal for installation at points throughout an air distribution system to track valuable compressed air and assess system operation.