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The maximum traffic of the SDMP320 is four times that of the company's "SDMP305" released in November 2005. This is expected to be used as a fuel pump for delivering diluted methanol fuel to small fuel cells. However, the pump has an outer dimension of 33 x 33 x 5.5 mm, which is larger than 305 (25 x 25 x 4.8 mm). By volume comparison, 320 is about twice that of 305. The diaphragm material is COC (Cyclic Olefin Copolym) resin, and the valve material is the same as 305 using EPDM rubber material. Other specifications are shown in the table below.
Maximum pump pressure 40kPa
Driving voltage 60~250Vp-p
Driving frequency 10～60Hz
Working temperature +5～+50°C
Input and output pipe outer diameter 2.8mm, inner diameter 1.6mm, length 5.0mm
Weight about 9g (excluding power cord)
Star Precision has now prototyped the small pump "SDMP320" with a maximum flow of 20mL/min. This is a diaphragm pump using a piezoelectric element, and since the motor and the rotating shaft are not used, power consumption is small. It is mainly used for fuel supply of small fuel cells and liquid transportation of various analytical equipment. The company hopes to put the pump into mass production in the future.