Basic safety instructions Deltabar FMD71, FMD72
10 Endress+Hauser
2 Basic safety instructions
2.1 Requirements concerning the staff
The personnel for installation, commissioning, diagnostics and maintenance must fulfill
the following requirements:
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Trained, qualified specialists: must have a relevant qualification for this specific
function and task
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Are authorized by the plant owner/operator
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Are familiar with federal/national regulations
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Before beginning work, the specialist staff must have read and understood the
instructions in the Operating Instructions and supplementary documentation as well as
in the certificates (depending on the application)
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Following instructions and basic conditions
The operating personnel must fulfill the following requirements:
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Being instructed and authorized according to the requirements of the task by the
facility's owner-operator
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Following the instructions in these Operating Instructions
2.2 Designated use
2.2.1 Application and media
The Deltabar FMD72 is a differential pressure transmitter for measuring differential
pressure and level in pressurized tanks. The device has two sensor modules, which
measure the operating pressure (High Pressure HP and Low Pressure LP). The differential
pressure/hydrostatic level is calculated in the transmitter unit. The sensor signal is
transmitted digitally. In addition, sensor temperatures and the individual process pressures
present at the respective sensor modules can be individually evaluated and transmitted. If
the limit values specified in the "Technical Data" and the conditions listed in the
instructions and additional documentation are observed, the measuring device may be
used for the following measurements (process variables):
Measured process variables
• Pressure HP and Pressure LP
• Sensor temperature HP and sensor temperature LP
• Transmitter temperature
Calculated process variables
• Differential pressure
• Level (level, volume or mass)
2.2.2 Incorrect use
The manufacturer is not liable for damage caused by improper or non-designated use.
Verification for borderline cases:
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For special fluids and fluids for cleaning, Endress+Hauser is glad to provide assistance
in verifying the corrosion resistance of fluid-wetted materials, but does not accept any
warranty or liability.
2.2.3 Residual risks
Due to heat transfer from the process as well as power loss in the electronics, the
temperature of the electronics housing and the assemblies contained therein (e.g. display