Transmitter Standard Differential Pressure Type Model GTX15D, 30D, 40D, 41D, 71D, 32D, 42D, 72D Gauge Pressure Type Transmitter Standard Differential Pressure TypeModel GTX15D, 30D, 40D, 41D, 71D ... .SemiconductorFor applications that require highly stable, accurate measurement. AT9000 Advanced Transmitter Model GTX