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BAROsense Pressure Transmitters
Brand: Delta OHM S.R.L.
BAROsense is a barometric transmitter equipped with a precision piezo-resistive pressure sensor with integrated temperature sensor.
The pressure and temperature measurements are digitally processed to obtain a pressure output value compensated over the whole transmitter temperature operating range.
The sensor is factory calibrated in multiple points and has excellent time stability and repeatability.
The instrument has a digital RS485 output with MODBUS-RTU or proprietary protocol.
As option, it can be supplied with an additional analog output, which can be selected in current or voltage via an internal jumper.
The current output is user configurable 0/4 to 20 mA, while the voltage output must be defined when ordering (0 to 1 V, 0 to 5 V or 0 to 10 V).
The transmitter digital output enables the transmission of the measurements over long distances and connects the transmitter to sensors networks.
The pressure can be expressed in different user-selectable units of measurement.
Versions with optional display are available for immediate and direct reading.
For outdoor installation, a static port with support bracket is available.
This is meant to minimize the measurement error caused by the wind flow on the pressure input and to make measurements in open field extremely accurate and reliable.
Specifications
Brand
Output
- RS-485 (Modbus-RTU or ASCII proprietary protocol)
- Optional analog output, selectable in current(0/4…20 mA) or voltage (0…1 V, 0…5 V or 0…10 V, depending on the model)
Power Supply
- BAROsense-M: 7 to 30 Vdc
- BAROsense-1 and BAROsense-5: 8 to 30 Vdc
- BAROsense-10: 15 to 30 Vdc
Consumption
- 4 mA @ 24 Vdc (+ output current if current output is used)
Connection
- Internal screw terminal header / PG7 cable gland for power supply and output.
- Optional M12 connector for the T/RH external probe
Operating Conditions
- -40 to +60° C (-20 to +60° C with LCD) 0 to 100 %RH
Compatible Media
- Air and dry gases
Materials
- Transmitter: polycarbonate, pressure input in nickel-plated brass
- Static port (optional): ASA
- Support bracket (optional): aluminium alloy
Weight
- 250 g approx. (+ 570 g approx. for static port)
Protection Degree
- IP 65
Barometric Pressure Sensor
- Piezoresistive
Barometric Pressure Measuring Range
- 300 to 1100 hPa
- Configurable for the analog output: default
- 600 to 1100 hPa
Barometric Pressure Resolution
- 0.1 hPa for the display
- 0.01 hPa for the output
Barometric Pressure Accuracy
- ± 0.5 hPa (700 to 1100 hPa) @ 20° C
- ± 1 hPa (500 to 1100 hPa)
- ± 1.5 hPa (300 to 500 hPa) @ T=(0 to 60° C)
Barometric Pressure Long-term Stability
- < ± 1 hPa/year
Relative Humidity Sensor
- Capacitive
Relative Humidity Measuring Range
- 0 to 100 %RH
Relative Humidity Resolution
- 0.1%
Relative Humidity Accuracy
- ± 2.5 % (0 to 85 %)
- ± 3.5 % (85 to 100 %) @ T=23° C
Relative Humidity Temperature Drift
- 0.05 %/K (0° to 60° C)
Relative Humidity Sensor Operating Temperature
- -40 to +105° C (R.H. max= [100-2*(T-80)] @ T=80 to 105° C)
Relative Humidity Response Time
- T63 < 4 s (air speed = 2 m/s, without filter)
Relative Humidity Long-term Stability
- < 1 %/year (@ 23° C and 30 to 70 %RH)
Temperature Sensor
- PTAT integrated in humidity module
Temperature Measuring Range
- -40° to +105° C
Temperature Resolution
- 0.1° C
Temperature Accuracy
- ± [0.2 + 0.032 * (T-60)] °C in the range T= +60° to +105° C
- ± 0.2° C in the range 0° to +60° C
- ± (0.2 - 0.05 * T) °C in the range T= -40° to 0° C
Temperature Long-term Stability
- 0.05° C/year
- Meteorological Applications
- Environmental Monitoring System
- Altitude Applications
- Barometric Pressure Compensation In Internal Combustion Engines
- Cleanrooms
- Testing Of Vehicle Emissions