美国SSI压力传感器部分型号 P31-1**-A-P P31-30A-A-P P31-50A-A-P P31-7**-A-P P31-100A-A-P P31-200A-A-P P31-300-A-P P31-400A-A-P P31-500A-A-P P31-750A-A-P P31-1000A-A-P P31-1500A-A-P P31-2000A-A-P P31-3000A-A-P P31-2**-B-MD P31-2**-C-M12 P31-2**-D-I6 P51-500A-A-P-4.5V P51-1**-B-MD-20MA P51-50A-C-M12-5V P51-300A-E-I6-4.5V MG-500-A-MD MG-15-B-S MG-50-A-MDPR MG-75-A-MD MG-5000-A-MD 等等型号