Micro Pressure / Differential Pressure Transmitter / HD402T Series
Senseka (formerly Delta Ohm)
Pressure transmitter suitable for measuring gauge pressure or differential pressure from full scale 50 Pa to 200 kPa.
- Uses a silicon-type piezoelectric pressure sensor equipped with high-precision temperature compensation, excellent linearity, reproducibility, and long-term stability. - The sensor's output signal is converted to the following output signals depending on the model: [HD402T] Voltage DC 0-10V or active type current 0/4-20mA output [HD402AT] 2-wire (current loop) 4-20mA output [HD402ST] RS485 Modbus-RTU output - The current output signal is resistant to interference from noise and can be transmitted over long distances. - In addition to full scale (F.S.), it is also possible to set the measurement range for positive scale (0 to +F.S.) or positive-negative scale (-F.S. to 0 to +F.S.). - Settings can be made using dip switches mounted on the PCB or by connecting a serial port to a PC. - An option with an LCD display capable of 4-digit display is available. ▲ DC 0-10V/4(0)-20mA/RS485 Modbus-RTU output ▲ Measurement units (Pa/kPa/hPa (mbar)), and full scale (large, medium, small) settings are possible. ▲ Settings for positive (0 to +FS) and positive-negative scale (-FS to 0 to +FS) are possible.
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basic information
Measurement range: Gauge pressure and differential pressure from 0 to 50 Pa to 0 to 200 kPa *Refer to Table 1 in the catalog/website Resolution: *Refer to Table 2 in the catalog/website Accuracy (@25℃) ±1.5% FS: HD402T/AT/ST1 ±0.75% FS: HD402T/AT/ST2 Accuracy (excluding 25℃ @0–50℃) ±3% FS: HD402T/AT/ST1 ±1% FS: HD402T/AT/ST2, HD402T/AT/ST3, HD402T/AT/ST4, HD402T/AT/ST5 Long-term stability (1000 hours, @25℃) ±0.5% FS: HD402T/AT/ST1, HD402T/AT/ST2 ±0.35% FS: HD402T/AT/ST3 ±0.25% FS: HD402T/AT/ST4, HD402T/AT/ST5 Output signal HD402T: Voltage DC 0–10V (RLmin=10kΩ), 0–20mA or 4–20mA (RLmax=500Ω) HD402AT: 2-wire (current loop) 4–20mA (RLmax=(Vdc-12)/0.022) HD402ST: RS485 Modbus-RTU
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Applications/Examples of results
Control of air conditioning, ventilation equipment, and filters Monitoring of clean rooms, control of pneumatic equipment Respiratory devices, sprayers, vaporizers, etc.
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Company information
Sakaki Corporation provides products and services from leading European manufacturers such as "Sensirion (formerly Delta Ohm) (formerly Glaesinger)", "Senseair", "Z-LASER", and "LSI Lastem" as the official importer and distributor in Japan. Additionally, we develop, support, and undertake custom development and mass production of our own brand network IoT products, including routers and gateways that support camera video and solar power cloud services.