771 系列電氣轉(zhuǎn)換器簡(jiǎn)單介紹 Calibration Accuracy: ±0.25% of span Reproducibility: 0.2% of span Response Level: 0.025% of span 771 系列電氣轉(zhuǎn)換器Current-to-Pneumatic Transducers的詳細(xì)介紹 Surface Mounting:Two 1/4 x 20 x 5/16" deep blind tapped holes Enclosure:NEMA 3R NEMA 4 via conduit vent Electrical Classification FM Approved Model 77 Non-incendive for Class I, Div. 2, Groups A, B, C, D.Dust-ignition proof for Class II, Div. 1, Groups E, F, G. Suitable for Class III, Div. 1 hazardous locations and NEMA 4. Model 77XXF Iinsically safe for Class I/II/III, Div. 1, Groups A, B, C,D, E, F, G and NEMA 4 when used with approved barriers and converters listed on Siemens drawing #15032-7704/7705.