Micro Pressure / Differential Pressure Transmitter / HD404T Series
HD404T/HD404ST Delta Ohm
High-precision measurement of gauge pressure and differential pressure based on atmospheric pressure.
The HD404T series micro-pressure and micro-differential pressure transmitters accurately measure gauge pressure and differential pressure based on atmospheric pressure within the following measurement ranges: ● Analog output models: Full scale from 50Pa to 1000Pa ● RS485 Modbus-RTU output models: Full scale of 250Pa, 1000Pa, 100hPa These transmitters utilize sensors based on silicon micromachining technology, providing exceptional long-term linearity, reproducibility, and stability. The output signal from the sensor is converted into either standard analog signals (current: 4–20mA or voltage: 0–10V) or digital signals in Modbus-RTU format, which are highly noise-resistant and capable of long-distance transmission, depending on the model. ▼ Micro-pressure and micro-differential pressure transmitters with a minimum measurement range of 0–50Pa ▼ "Auto-Zero" function for regular automatic offset correction ▼ Dual analog output of 4–20mA/DC 0–10V ▼ Switchable LPW/HIGH (measurement range) and FAST/SLOW (response speed) settings
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basic information
[Measurement Range] ○ Analog output models: Gauge pressure and differential pressure from 0 to 50Pa and 0 to 1000Pa ○ RS485 Modbus-RTU output models: ±250Pa, ±1000Pa, ±100hPa [Resolution] HD404ST2: 0.1Pa Up to full scale 500Pa: 0.5Pa (excluding HD404ST2) HD404ST5: 0.1hPa 0.01m/s (SR model only) [Output Signal] ○ Analog output models: DC0 to 10V (RLmin=10kΩ) and 4 to 20mA (RLmax=500Ω, at DC24V) ○ RS485 Modbus-RTU output models: RS485 Modbus-RTU [Response Time] ○ Analog output models FAST mode: 0.125 seconds: pressure mode, 1 second: velocity mode (SR model only) ○ Analog output models SLOW mode: default value 2 seconds, can be changed to 1 second or 4 seconds via serial command ○ RS485 Modbus-RTU output models: default value 2 seconds, can be changed to 0.125 seconds, 1 second, or 4 seconds via serial command [Maximum Overload] 50kPa [Measured Media] Air and non-corrosive gases only
Price range
P2
Delivery Time
Applications/Examples of results
Equipment management Monitoring of clean rooms Control of filters Measurement of flow rate (in combination with Pitot tubes) Control of air conditioning and ventilation
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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-LAZER", 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.
