Ultrasonic Gas Flow and Concentration Sensor for Hydrogen

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Ultrasonic Gas Flow and Concentration Sensor for Hydrogen capable of simultaneously measuring the flow rate and concentration of hydrogen in a highly humid environment
The single measuring instrument for measuring hydrogen flow rates ranging from 0 to 700 NL/min
The product is under development, and its mass production schedule and price have yet to be decided.

Features

  • Enabling the simultaneous measurement of the flow rate and concentration of hydrogen under a highly humid environment
  • Enabling the measurement of a wide range of hydrogen flow rate and concentration
  • Achieving low pressure-drop performance even when measuring high-flow gase

Application: Measurement of the flow rate and concentration of circulating hydrogen

  • Evaluation of hydrogen circulation in fuel cell systems
  • Evaluation of hydrogen circulation in fuel cell stack units
  • Measurement of flow rates and concentrations of hydrogen under other highly humid environments

Specification (draft)

*The specifications may be subject to change without prior notice.

Item Specifications*
Target gas H2, N2,O2, Air 
Flow rate range 0 to 700 NL/min (H2: 100%)
* Up to 400 NL for N2: 100%
Flow rate accuracy (1) ±3.0% RD (H2: 100%, Flow rate: 100 to 700 NL/min)
(2) 3L (H2: 100%, Flow rate: < 100 NL/min)
Concentration accuracy ±2.0% (H2: 100%)
Operating temperature/ humidity
range
0 to 70°C / 0 to 100% RH *Measurable even when droplets flow in
Maximum allowable pressure
(absolute pressure)
500 kPa
Pressure loss 10 kPa or below (Air: 700 NL/min)
Output (1) CSV format (by PC measurement software)
Date and time, flow rate (normal liter), temperature, pressure, and concentration (100% RH)
(2) Analog output (1 to 5 V)
Select two from flow rate (normal liter), concentration, temperature, and pressure.
Output cycle 10 ms
Connector USB
Power supply Power supply from PC via USB cable
Flow channel material Aluminum
Pipe joint SWAGELOK SS-1210-1-16RT
Operating voltage and current 5.0 V (MAX 5.5 V), MAX 100 mA
Size (weight: kg) 300 x 177 x 96 mm (3 kg)

Related information

・ Press Release (Aug, 2020)
Panasonic Develops an Ultrasonic Gas Flow and Concentration sensor for Hydrogen