I have a Additel 681 Digital Pressure Gauge and I want to know how to connect it to my National Instruments C Series Strain/Bridge Input Module (NI-9218, NI-9219, NI-9235, NI-9236 or NI-9237). The Additel 681 has a Serial RS-232 connector, and three of the pins are for transfer data, receive data and ground.
According with the information provided by the Additel 681 Data Sheet, this device communicates using RS-232 serial protocol. So, it does not requires an Strain/Bridge Module, you can communicate your device with LabVIEW using NI-VISA.
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