Absolute Pressure Transducer
Absolute Pressure Transducer APW-20KPB /
Absolute Pressure Amplifier DC-30APW
The APW-20KPB is an absolute pressure transducer designed for measuring absolute pressure in applications such as tunnel interior pressure, building interior pressure, atmospheric pressure, and altitude.
It is capable of measuring dynamic pressure fluctuations, including micro-pressure waves generated in railway tunnels by passing trains.
The transducer is intended for use with the dedicated DC-30APW amplifier.
Degree of Protection
Equivalent to IP65 (APW-20KPB)
- Features
- Incorporates a pressure sensing element with SUS316L wetted parts and a dual-diaphragm construction.
- The transducer and dedicated amplifier are supplied as a matched pair.
- Individually calibrated for absolute pressure referenced to a vacuum, with a standard atmospheric pressure reference of 101.3 kPa ±20 kPa.
- Current signal transmission between the transducer and amplifier provides excellent noise immunity.
- The amplifier provides a ±5 V analog output, with 0 V corresponding to 101.3 kPa.
- Static pressure measurements can also be performed using the supplied hose fitting.
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Specifications
APW-20KPB Absolute Pressure Transducer / DC-30APW Absolute Pressure Amplifier
Type Pressure Range Output Voltage Nonlinearity Operating Temperature Range Frequency Response APW-20KPB/
DC-30APW101.3± 20kPa
(absolute pressure)±5V
(0 V at an absolute pressure of 101.3 kPa)0.1%RO −20 to +70°C Approx. 500 Hz
