The ECHO “Arrow Hunter PLUS” is a complete line of clamp-on Transit-time flowmeters for portable, permanent and thermal energy applications. They will measure all metal or plastic pipes with any liners from 3/8” to 118” diameters on clean or dirty liquids. It uses Dual DSP technology and measures flow velocity from 0.03 to 82 ft/s. Accuracy is +/- 0.5% factory calibrated (process conditions can reduce accuracy).We can measure any municipal flow application, including low-flow chemical feed to large concrete-lined raw sewage pipes.