ME550 Capacitive, Ø32mm
Metallux ME550 pressure sensors are
made with a ceramic base plate and a flush diaphragm and work following the
capacitive principle, in which the pressure measurement is given by the
variation of capacitance due to deformation of a capacitor’s plates. The moving
capacitor plate is screen printed on the flush ceramic diaphragm which is, in
turn, glued to the sensor’s body. The capacitor plate faces the inside where a
cavity is made and the diaphragm’s opposite side can therefore be exposed
directly to the medium to be measured. Sensor’s vent hole is protected against
humidity and dirt by a special filter glued to the ceramic cell (PCS). The wide
diameter (32.4 mm) and the use of the capacitive technology make the ME550 a
sensor suitable for measuring very low pressures, as low as 60 mbar.
Nevertheless, ME550 sensors feature a high burst pressure, making them quite
reliable in many applications. Because of the Al2O3 ceramic excellent chemical
resistance (aggressive gases, most of solvents and acids, etc.), no additional
protection is normally required. Metallux ME550 sensors can be provided in the
gauge or absolute versions.
PRESSURE RANGE fso
(bar) |
0.06-0.16-0.4-1-2-5-10-20
bar |
PRESSURE TYPE |
GAUGE- ABSOLUTE |
TECHNOLOGY |
CAPACITIVE CERAMIC
PRESSURE SENSOR |
DIAMETER (mm) |
32.40 mm |
STRUCTURE |
FLUSH DIAPHRAGM |
THERMAL DRIFT %FS/°C |
No |
SIGNAL CONDITIONING |
No |
OFFSET |
Cx and Cr = 50-80
pF, Cx/Cr = 1 ± 0.07 |
TERMINATION PITCH |
NA |
SIGNAL OUTPUT |
CX/CR CAPACITIVE
(pF) |