The Validyne DP103 differential pressure transducer is available in full scale pressure ranges as low as 3.5 mm H2O. This pressure transducer was recently used to measure the pressure drop through prototype face masks that were on the order of 5 to 10 mm H2O.

The Validyne transducer measures differential pressure so the conversion of the pressure signal to flow is a matter of some simple algebra. For example, the pneumotach chart above states that the pressure drop across the pneumotach will be 17 mm H2O at a flow rate of 800 L/Min. The Validyne DP45 in its most sensitive range, is calibrated such that 20 mm H2O = 10 Vdc signal output.

The method of administering anesthesia to surgical patients on the operating table is via a vapor delivery system. In this method the anesthesia is poured into a vaporizer as a liquid
and medical grade oxygen piped to the vaporizer as well. A heater turns the liquid anesthesia to a vapor so that it can be integrated into the patient’s breathing mixture.

Dedicated for the development of new medical devices for pediatric and adult patients with heart failure. DP15, DP45 and CD23 used to perform critical research.

DP45 and FDA approved Pressure Sensor MP45 used in pulmonary research labs.

The Validyne DP103 is designed for exceedingly low differential pressure measurement applications where high accuracy is required under rough physical conditions. With full scale ranges down to -0.008 psid (-0.56cm H2O), this instrument is being used in the measurement of very low flow rates of gases where symmetrical pressure cavities are required for dynamic response. It is also used in very small leak detection and pressure null detection systems.

The Validyne DP45 Very Low Differential Pressure Transducer is designed for extremely low pressure measurement in the order of ±1 inch water column. This instrument is used extensively in connection with flow measurements where dynamic response at low flow rates is required. Dynamic line pressure effects are minimized due to the combination of low internal volume, symmetrical construction, and small volumetric displacement inherent in the DP45 design.

The P17 OEM Low Range Low Cost pressure transducer features high sensitivity to very low pressures with full scales available down to 0.1 In H2O. Output signal is ±5 Vdc and power can be +5 to +28 Vdc. Zero and Span adjustments are included. The P17 has a robust steel sensor construction.

The PS309 is a portable, completely self-contained digital pressure manometer, available in absolute, gauge and differential ranges. In addition to the front panel liquid crystal digital display, the unit also provides a 2 Vdc analog output suitable or recording, remote display or control purposes.