HD9408.3B is a barometric transmitter that uses a piezoresistive high accuracy and temperature-compensated sensor. It allows to measure the atmospheric pressure in the range from 500…1200 hPa, providing extreme accuracy and time stability, with excellent repeatability, low hysteresis, and excellent temperature behavior.
The sensor is factory calibrated at several points and at different temperatures in the range of use.
The transmitter is available in three versions which differ in the output type:
- HD9408.3B.1: configurable 0…5 V or 1…5 V analogue voltage output and digital RS232, RS422 or RS485 output. Standard MODBUS-RTU and NMEA 0183 protocols.
- HD9408.3B.2: active configurable 0…20 mA or 4…20 mA current output and digital RS232, RS422 or RS485 output. Standard MODBUS-RTU and NMEA 0183 protocols.
- HD9408.3B.3: Digital SDI-12 output, compatible with version 1.3 of the protocol.
The watertight housing with IP 67 protection degree allows the use of the instrument even in harsh environments.
The instrument is particularly suitable for meteorological applications (AWOS – Automated Weather Observing Systems), environmental monitoring systems, meteorological and environmental data logging, measurement laboratories, atmospheric pressure compensation in the performance of internal combustion engines, barometric pressure compensation in clean rooms, vehicle emission test.
Its low power consumption makes it ideal for remote acquisition systems such as automatic weather stations powered by solar cells.