Immersible Thermal Gas Mass Flow Meter 

MODEL: 640S

■  Direct mass flow  monitoring eliminates need for separate temperature and pressure inputs

■  Accuracy +/- 1% of reading plus 0.5% of full scale  

■  Patented Dry-Sense™ technology eliminates sensor drift 

■  State-of-the-art calibration facility insures a highly accurate calibration that matches the application 

■  Field validation of meter electronics and sensor resistance verifies flow meter performance 

■  One-second response to changes in flow rate 

■  FM, CSA, PED, ATEX and GOST R/RTN certified for hazardous areas 

■  CE approved 

■  High temperature option to 750°F (400°C) available 

■  Multipoint options available 

■  Integrated self-cleaning purge option available for dirty flows 

■  Low and high pressure hot taps available

■  Optional HART, Modbus and Profibus DP available, Foundation Fieldbus