STD700 SmartLine 差压变送器
可通过控制键，HART 通讯，DE协议或 Foundation Fieldbus协议进行参数设定。
· STD720: -400 至 +400 inH2O (-1000 至 +1000 mbar)
· STD730：-100 至 +100 psi (-7.0 至 +7.0 bar)
· STD770：-3000 至 +3000 psi (-210 至 +210 bar)

SmartLine ST 700 Differential Pressure Transmitters (STD700) bring smart technology to a wide spectrum of measurement applications ranging from furnace combustion airflow rate to hydrostatic tank gauging. The differential pressure transmitters can be used with any primary flow element to provide proven, repeatable flow measurement.
• STD720 -400 to +400 in H2O -1000 to +1000 mbar
• STD730 -100 to +100 psi -7.0 to +7.0 bar
• STD770 -3000 to +3000 psi -210 to +210 bar
STD 700 transmitters offer the following compelling features:
• Accuracy of up to 0.05% of span
• Onboard pressure and temperature compensation
• Alphanumeric display capability
• External zero, span and configuration capability
• 100ms response time
• Polarity-insensitive electrical connections.