Miniature Pneumotach 22Mm Od R8300B

Pneumotach Amplifier has 2 analog outputs, one for flow and one for pressure. Dual Amplifier provides only analog flow output for each pneumotach. Consider Pneumotach Calibration which presets range control and provides chart of volts out vs. flow and pressure (volts vs. flow only on dual amp). For dual amp must buy 2 calibrations.Heater Control must be purchased separately."A" - Sizes Dead space: 1.75 cc Weight: 37 gram Length: 3.45cm Ports: 0.312" OD x 0.250 ID both ends Fleisch equivalent: # 00"B" - Sizes Dead space: 2.4 cc Weight: 46 gram Length: 5.39 cm Ports: Large end 22mm OD x 15mm ID; small end 15mm OD x 0.250" ID Fleisch equivalent: # 00 "C" - Sizes Dead space: 1.9 cc Weight: 43 gram Length: 4.83 cm Ports: 15mm OD x 0.250 ID both ends Fleisch equivalent: # 00