... between 4mm-200mm. can be LCD dispaly,4-20mA output. Nominal DiameterStandard Flow Range (SFR) Extended Flow Range ... 16, 2580310 to 1005 to 100Flange: 2.54.0, 6.3, 12, 16, 25100420 to 20010 to 200Flange: 1 ... .64.0, 6.3, 12, 16, 25125525 to 25013 to 250Flange: 1 ... to 800Flange: 1.62.5, 4.0, 6.3, 12, 16 pulse output fluid turbine flowmeter instruments,ISO Certificated