Endress+Hauser Prosonic M FMU42, Руководство по эксплуатации

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Prosonic M FMU42 HART Electrical connection
Hauser 15
5.2.3 Safety distance
The device generates a warning or alarm if the level reaches the safety distance (SD). The
SD size can be set as required by the user in the Safety distance (015) function.
In the In safety dist. (016) function define how the device should react if the safety
distance is undershot.
Options and meaning
• Warning
The measuring device displays an error message but keeps measuring.
• Alarm
The measuring device displays an error message.
The output signal in the Output on alarm (011) function displays the defined value.
As soon as the level drops below the safety distance, the device resumes measuring.
• Self holding
The measuring device responds in the same way as for an alarm.
However, the alarm condition is maintained even if the level drops below the safety
distance again.
The device only starts measuring again when the user cancels the alarm using the
Acknowledge alarm (017) function.
5.3 Post-mounting check
 Is the device free from damage (visual inspection)?
 Does the measuring device comply with the measuring point specifications?
 After aligning the housing: is the process seal on the nozzle or flange free from
damage?
For example:
• Supply voltage
• Ambient temperature
• Process temperature
• Process pressure
• Ambient temperature range
• Measuring range
 Are the measuring point number and labeling correct (visual inspection)?
 Is the measuring device adequately protected against precipitation and direct sunlight?
6 Electrical connection
6.1 Connecting requirements
L
WARNING
Risk of explosion due to faulty connection.
‣
Observe applicable national standards.
‣
Comply with the specifications in the Safety Instructions (XA).
‣
Check to ensure that the supply voltage matches the information on the nameplate.
‣
The specified cable gland must be used.
‣
Switch off the supply voltage before connecting.
‣
Connect the potential equalization line to the outer ground terminal before applying
the supply voltage.
‣
When connecting to the public mains, install a mains switch for the device such that it
is within easy reach of the device. Mark the switch as a disconnector for the device
(IEC/EN61010).